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Nr

2010

The magazine for success with wind

www.eno-energy.com

Wind power an inexhaustible energy source

- Gesellschaft für » anemos Umweltmeteorologie

energy to open offices » e.n.o. in Italy and Sweden

provides » µ-Sen optimum CMS


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Contents

T h e m a g a z i n e f o r s u c c e s s w ith w i n d

In this issue 4

5 6 7 8

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10 11

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Wind energy in Mecklenburg-Western Pomerania has a future! Volker Schlotmann, Minister for Transport, Building and Regional Development of Mecklenburg-Western Pomerania e.n.o. energy – also represented in Italy and Sweden Wind potential assessments are a must anemos Gesellschaft für Umweltmeteorologie e.n.o. energy sales department expanded e.n.o. energy sells further tender Financing of projects by NORD/LB Financing of the e.n.o. 92 prototype A following wind for wind energy participation certificate Test series for the “Ordinance on System Services by Wind Energy Plants” (System Service Ordinance – SDLWindV) e.n.o. energy project purchasing and cooperation Exhibition dates 2010 Project development by the planning department Balance sheet protection insurance

13 14 15

Eikboom – Professionals for nacelle housings Reliable remote diagnoses for wind energy turbines µ-Sen ensures high degree of efficiency thanks to CMS Technical data e.n.o. 92 – 2.2

Imprint Publisher e.n.o. energy systems GmbH | Am Strande 2 e | 18055 Rostock Germany | fon: +49 (0)381 . 20 37 92-0 | fax: +49 (0)381 . 20 37 92-101 info@eno-energy.com | www.eno-energy.com Editorial Board and Layout Dipl.-Kffr. Britta Kunis (BK) Type www.WERK3.de Translation www.eued.de Printed at Stadtdruckerei Weidner Paper Satimat Green | 40 % FSC, 60 % Recycling Copyright All contributions published in e.n.o. mag (copy, photos, graphics, tables, logos) are subject to copyright. Reprinting; inclusion in databases, online services and Internet pages; and reproduction on data carriers shall only be permitted following granting of prior written permission by e.n.o. energy GmbH. Despite careful scrutiny of the publication by the editorial board the editor accepts no liability for its accuracy. Articles appearing under an author’s name or initials do not necessarily reflect the editor’s opinion. Frequency of publication quarterly Copies from fon +49 (0)381 . 20 37 92-0 or at info@eno-energy.com Title photo Wind-bent tree at Weststrand (Fischland-Darss) by Peter-Paul Reinmuth

Rostock Production Facility


Editorial

Dear Readers, In contrast to many other sectors of the mechanical and plant engineering industry, the German wind industry seems to have survived the economic crisis largely unscathed. The adjustment of framework conditions for wind energy via the EEC amendment of 01.01.2009 to reflect the global market’s level has been beneficial in this regard. After two years of stagnation the wind energy market has displayed growth for the first time again. Thus, according to figures released by the Deutsches WindenergieInstitut (DEWI – German Wind Energy Institute), 952 new wind energy turbines with a performance of 1,917 MW were erected in Germany. As of the end of 2009 a total of 21,164 wind energy turbines with a total performance of 25,777 MW were thus in operation. Consequently wind energy’s share of gross power consumption increased to 7.58 %. Developments in other European countries were similarly positive. Spain topped the list with growth of 24 % over the previous year (2,459 MW) ahead of Germany (1,917 MW, 15 %), Italy (1,114 MW, 11 %), France (1,088 MW, 11 %) and the UK (1,077 MW, 10 %). Market developments outside of Europe were even more pronounced. China alone some 12,500 MW of capacity installed in 2009 (98 % growth over the previous year). The USA saw performance increase by 9,900 MW (18 %). Countries such as Brazil and Turkey are also investing more heavily in wind energy. This global trend has prompted e.n.o. energy to significantly expand its own export activities. In addition to existing branch offices in France and Turkey, the opening of sales offices in Italy and Sweden is planned for mid-2010 (P. 5). Furthermore, possible cooperation relationships, and in particular the deployment of e.n.o.’s own wind turbines, the e.n.o. 82 and the e.n.o. 92, are planned. The efficiency of the e.n.o. energy turbines is not least the result of input from internationally recognised companies. Reports on three of these important partners appear on Pages 6, 13 and 14. The city of Rostock, headquarters of e.n.o. energy, also profits from international developments in the wind industry. Rostock has thus been designated a model region for the southern Baltic region (Interreg Programme South Baltic), receiving 3.5 million Euro in funding. It is to be hoped that this will act as an incentive for the further development of the wind industry in Mecklenburg-Western Pomerania.

Dipl.-Kffr. Britta Kunis Marketing/PR

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T h e m a g a z i n e f o r s u c c e s s w ith w i n d

Wind energy in Mecklenburg-Western Pomerania has a future! Volker Schlotmann, Minister for Transport, Building and Regional Development of MecklenburgWestern Pomerania The importance of wind energy Wind energy plays a very important role in Mecklenburg-Western Pomerania (MWP). In comparison to the other German federal states, the state has the second highest level of regenerative energy production. Wind energy’s share of power production in M-WP is 31 %. The state government will, in future, ensure that more zones are made available for wind energy. To date some 2,000 jobs have been created in the field of renewable energy in the region. The objective is more industrial jobs with a long term perspective. Because anyone building on renewable energy is putting their faith in the future. We must invest now and in the long term for future generations.

Wind power is the Number 1 eco-power source in M-WP. With a 68 percent share of regenerative energy production wind turbines fed some 2.6 million megawatthours of electricity into the grid in 2008. This is double the amount produced in 2003. M-WP had already achieved the national government’s goal of producing at least 20 percent of electricity supply using renewable energy by 2020 in 2004.

More zones for wind energy Repositioning of the Regional Spatial Development Programme will also include the designation of more zones for wind turbines. The state’s four regional planning associations (Mecklenburg Lake District, Central Mecklenburg/Rostock, Western Pomerania and Western Mecklenburg) are currently repositioning their Regional Spatial Development Programmes (RREP). These programmes represent more detailed versions of the State Spatial Development Programme for the state’s four planning regions. The Ministry for Regional Development is assisting with this task. One of the focuses of the programmes’ repositioning is the designation of new, suitable zones for wind turbines and reexamination of existing ones. The objective is to provide more zones for wind turbines then previously existed. Designated suitable zones will not be subject to any height restrictions, thus also making them suitable for any future re-powering. Based on the previous status, repositioning the Regional Spatial Development Programmes and increasing designated zones for wind

© C. Kettler

Volker Schlotmann (53) • Married, three children • Studied at the Sozialakademie Dortmund and the Hochschule für Wirtschaft und Politik in Hamburg • 1988 – 1990 Full-time trade union secretary of the Gewerkschaft Gartenbau, Land- und Forstwirtschaft (Horticulture, Agriculture and Forestry Union) in the federal state district of Bavaria • 1990 – 1995 Federal state district head of the Gewerkschaft Gartenbau, Land- und Forstwirtschaft in M-WP • Since 1994 Member of the M-WP state parliament • 1996 – 1997 State secretary of IG Bauen Agrar Umwelt (Trade Union for Building, Agriculture and the Environment) • 1996 – 1998 Parliamentary Secretary of the SPD party group in the M-WP state parliament • 1998 – 2008 Chairman of the SPD party group in the M-WP state parliament • Since 06.10.2008 Minister for Transport, Building and Regional Development in M-WP

turbines by just some 5,000 hectares would result in an additional 500 wind turbines. The total area of zones suitable for the wind power industry in M-WP covers some 13,000 hectares.

Well developed infrastructure Mecklenburg-Western Pomerania has many location advantages in terms of infrastructure. In recent years we have ensured that we are well prepared. We have consistently invested in our Baltic ports; expanded road and rail routes and provided industrial sites in direct proximity to ports. Short routes to national and international markets are our location advantages and we have additional space for growth – also and in particular for the wind energy industry.


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e.n.o. energy also represented in Italy and Sweden The increasing use of wind energy also means increased demand for high quality wind turbines and competent advice on site. e.n.o. energy will thus be opening branch offices in both countries in mid-2010. e.n.o. energy took over the Energie Eolienne France S.A.S. (EEF) planning office in Brittany in Autumn 2008. The first projects have now been completed. October 2009 saw the opening of a sales office in Istanbul. The objective behind the development of a presence in Southern Europe is, on the one hand, to realise projects already at the planning stage with regional partners. On the other, sales of e.n.o. energy wind turbines, in particular the e.n.o. 92 – 2.2 MW, should be organised both within an independent network as well as also in cooperation with local project developers.

turbines can, in this regard, often help to achieve higher operating profitability for the overall project. Dipl.-Ing. Ralf Hoch represents e.n.o. energy on the Scandinavian market. The principal office is in Sweden. Similarly to Italy, the objective is to increase sales of the wind turbines produced in Rostock and increase project development. The next step will be to set up a service team for Scandinavia.

Thanks to his many years of experience in the wind energy industry Lars Biebel will be implementing Å Suitable location for wind turbines on Sardinia e.n.o. energy’s Initial discussions were held with business activities in Italy and further Swedish planning offices in early 2009, developing those in France. resulting in a number of agreements, for whose implementation sales and project In order to ensure effective cooperation development personnel are being with Italian partners e.n.o. energy is also urgently sought. seeking engineers for project development and skilled personnel for The high flexibility of possible forms of the sale of wind turbines. cooperation and the effective As already successfully realised at other locations in the past, e.n.o. energy is also construction of wind farms aimed for in both Southern and Northern Europe interested in purchasing projects already should ensure e.n.o. energy’s optimum at the advanced planning stage. The market entry in both regions. BK deployment of e.n.o. energy wind

For your success. Wind turbines from e.n.o. energy.

rated power: diameter: hub height: rated wind speed: cut-in wind speed: cut-out wind speed:

2.0 MW 82,4 m 58,6 m, 80 m, 101 m, 108 m 13 m / s 3m/s 25 m / s

rated power: diameter: hub height: rated wind speed: cut-in wind speed: cut-out wind speed:

2.2 MW 92,8 m 80 m, 103 m, 123 m 13 m / s 3m/s 25 m / s

After over ten successful years as project developers we know where wind comes from and how to make optimum use of its power. That’s why we are now manufacturing wind turbines combining our extensive experience with the knowhow of top class suppliers. For reliable operations and your success with wind. phone: +49 (0)381 . 20 37 92-0 www.eno-energy.com

Success with wind.


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T h e m a g a z i n e f o r s u c c e s s w ith w i n d

Wind potential assessments are a must Interview with Dr. Heinz-Theo Mengelkamp, managing partner of anemos Gesellschaft für Umweltmeteorologie mbH © anemos

What services does anemos GmbH provide?

What makes your wind atlases so special?

anemos GmbH focuses on the meteorological aspects of wind energy exploitation. We offer the conventional spectrum of a wind potential assessment specialist, ranging from identification of sites using regional wind atlases to wind measurements through to bankable wind assessment reports.

That, in contrast to wind maps (which are often also called wind atlases), they provide temporal information. Temporal wind data sets can, for example, be directly compared to and correlated with measurements. Diurnal and seasonal wind speed cycles can only be displayed with the aid of high resolution, temporal wind data. This data can, for example, help with the precise determination of energy losses caused by legally prescribed turn-off times. The bundling of several regionally distributed wind parks into a portfolio reduces the total risk of an investment. The correlation of consistent wind atlas data sets has a long term effect on the calculation of the portfolio effect. In the most recent past wind atlases have attracted the attention of large power companies, who use information on the temporal and spatial variability of wind potential and the resulting energy production for the effective expansion and development of their power networks.

We have gathered particular know-how in the simulation of wind fields using complex atmospheric models and in the calculation of wind and solar park portfolios.

© anemos

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Wind atlas for Northern Europe

Six years ago, when, for the first time, we presented complex atmospheric models and so-called reanalysis data for wind potential calculations at the DEWEK conference, no-one took us seriously. Today these models and data are almost standard tools when compiling wind expertises. We used these methods to develop our wind atlases, using the data they contain in virtually every expertise we compile. The user group for wind atlases and/or the derivative products is growing continuously.

How has the “wind expertise” service developed? Amazingly. This year we celebrated our company’s 20th anniversary and have been personally involved in the market’s rapid development. In the beginning everyone bought widely used WasP software, thinking that they would be able to complete productivity calculations after spending a few days getting to know the programme, even if they had no idea what “atmospheric boundary layer” meant.

Dr. Heinz-Theo Mengelkamp (57) • 1973 – 1978 Studied meteorology and oceanography at the University of Kiel and the University of Washington, gaining a degree in meteorology • 1980 Gained a doctorate in natural sciences from the University of Kiel • Since 1979 member of the scientific staff at GKSS Forschungszentrum Geesthacht GmbH • 1990 Founded anemos GbR • Since 2003 managing partner of anemos Gesellschaft für Umweltmeteorologie mbH • Approved Consulting Meteorologist of the German Meteorological Society More information www.anemos.de

Today, meteorological specialist knowledge; powerful computers and complex models are indispensable. As a result the wind energy industry has, I am pleased to say, become an important field of activity for, for example, meteorologists and geographers. The wind expertise advisory council at the Bundesverband WindEnergie (German Wind Energy Association) and the Wind Potential working group at the Fördergesellschaft Windenergie und andere Erneuerbare Energien (Federation of German Windpower) have been of particular importance in this regard. Discussions regarding minimum standards and the formulation of the TR6 guideline have played a key role in improving services and introducing new methods. Dr. Mengelkamp, thank you for this conversation. Interview: Britta Kunis


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e.n.o. energy sales department expanded

Quality begins in the detail. From the screw to the tower: the e.n.o. 82 and e.n.o. 92 build on top class manufacturers.

At e.n.o. energy two new employees have been responsible for the sales department since the beginning of the year. Dipl.-Kffr. Maike Erlemann is Key Account Manager and Dipl.-Volkswirt Henri Wasnick is responsible for inhouse sales services. Maike Erlemann is responsible for developing and expanding national and international sales of e.n.o. energy’s wind turbines. She is a competent partner for requests for quotations and any questions relating to wind turbines.

Henri Wasnick is responsible for inhouse sales services. This allows him to provide the key account manager with support in all areas. He is happy to provide information about e.n.o. energy or the e.n.o. 82 and e.n.o. 92 turbines to anyone interested. While studying for his degree in political economics Henri Wasnick took advantage of the opportunity to spend six months as an intern in Norway. Following this he spent 18 months working as a student assistant at the Management Faculty of the University of Rostock.

“The market situation continues to be difficult,” admits Maike Erlemann openly, “however, since we sell complete packages the customer gets more for his money from us. That’s what makes our company special.” e.n.o. energy offers the experience gained in many years of project development and, in addition, the proven technology of the e.n.o. 82 and e.n.o. 92 wind turbines. “Our customers include investors, energy producers, project developers and also ‘friends&family’, so-called private individuals who want single wind turbines or small, turn-key wind farms.” Thanks to the added bonus that everything is supplied from one source Maike Erlemann has already been able to negotiate contracts with well-known German project developers. Should you have any questions regarding wind turbines, Ms Erlemann can be contacted directly at Maike.Erlemann@eno-energy.com

Main gear Bosch Rexroth

Large anti-friction bearings Rothe Erde

Generator VEM Sachsenwerk

*From 3 wind turbines

His career in the wind industry began at the end of his studies, when he was able to spend 3 months working as an intern in the Commercial Contract Management and Sales departments of a Hamburg-based wind turbine manufacturer. Thanks to his training and experience Henri Wasnick is perfectly equipped for his duties at e.n.o. energy. He can be contacted directly at Henri.Wasnick@eno-energy.com. BK

The secret of the highest possible degree of reliability is hidden in the details. For our wind turbines, we put our faith in high quality components from top class manufacturers. The result is solid turbines with a guaranteed availability of 97 %* and an excellent price-performance ratio. For your success with wind. phone: +49 (0)381 . 20 37 92-0 www.eno-energy.com

Success with wind.


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T h e m a g a z i n e f o r s u c c e s s w ith w i n d

e.n.o. energy sells further tender A year ago e.n.o. energy was able to report the successful sale of a tender. A new portfolio was announced in the 4-2009 issue of the e.n.o. mag and the response was overwhelming. Interest in the new tender, offering turnkey wind parks equipped with various wind energy turbine models at a number of locations, is great. Concrete discussions with potential purchasers have progressed to such an extent that the sale of the tender will be completed in the first half of 2010. The tender includes five wind parks in Germany and France with a total power output of some 60 MW. Plans envisage the wind parks operating wind turbines manufactured by e.n.o. energy, Enercon and Vestas. The purchasing consortium consists of several investors pursuing a very diverse spectrum of activities. They are energy providers; municipal utility companies and investment funds. Contractual negotiations with two investors have almost been completed and it is expected that the final contracts, for the first time also covering a wind park equipped with e.n.o. energy wind turbines, will be signed shortly. The financial investors will wait until the first transactions with e.n.o. energy wind turbines have been completed before commencing negotiations with e.n.o. energy. The international tender promises success for all parties concerned. The greatest benefit in this regard is that e.n.o. energy combines experience gained during many years of project development with technological knowhow. In addition to this, the negotiations have resulted in further strategic cooperations and sales potential. One of the energy providers participating in the tender wishes to conclude a framework contract for e.n.o. energy wind parks equipped with e.n.o. 82 wind turbines in the near future. The reasoning is simple but apt. Large energy providers work with large manufacturers. It is thus a logical conclusion that a municipal energy provider should cooperate with a medium-sized manufacturer such as e.n.o. energy.

Financing of projects using new e.n.o. energy turbine technology The NORD/LB bank secures construction of a further wind park by providing advice and taking on the financing. e.n.o. energy is currently constructing a further wind park consisting of eight e.n.o. 82 – 2.0 MW wind turbines with a hub height of 101 m in Mecklenburg-Western Pomerania. It has been possible to win a new financing partner, the NORD/LB bank, to realise the project. The bank will be providing project financing and interim construction financing. The partnership with the NORD/LB bank can be characterised as particularly constructive and focused.

shipping and aviation and infrastructure projects. The NORD/LB Group also includes the Bremen Regional State Bank. In addition to this subsidiary the NORD/LB is also leveraging cooperation with strategic partners. These include Sparkassen savings banks in Lower Saxony, Saxony-Anhalt and MecklenburgWestern Pomerania. Realisation of NORD/LB and e.n.o. energy’s first joint wind park will form the basis of a long term partnership. Additional projects in Germany and abroad have already been presented and are planned to be realised in the near future. It can be expected that the excellent results of the due diligence examination will also be taken into consideration by other banks.

Financing of the e.n.o. 92 prototype

© NORD/LB bank

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NORD/LB headquarters in Hanover

The most important basis for this successful partnership was created during the initial stages of discussions. Within the scope of consulting advice and a comprehensive due diligence procedure – i.e. in-depth scrutiny of the company and wind turbines’ commercial and technical status – the NORD/LB bank confirmed to e.n.o. energy that the technology was financeable. The NORD/LB bank, headquartered in Hanover, is Northern Germany’s leading universal bank, represented in the world’s major finance centres. The regional state bank’s core business activities are the provision of corporate banking services for medium-sized companies and structured financing in the fields of renewable energy;

The prototype of the e.n.o. 92 – 2.2 will soon be erected. The OstseeSparkasse savings bank (OSPA) in Rostock has already provided an initial financing proposal for realisation of the project. The OSPA will thus become a further e.n.o. energy financing partner in addition to the DKB bank, the NORD/LB bank and the UmweltBank. Further banks such as the IKB and the Baden-Württemberg Regional State Bank have also expressed favourable views regarding financing of e.n.o. energy wind turbines. The growing number of operational e.n.o. 82 wind turbines is very helpful in this regard. The OSPA’s commitment is viewed as being particularly positive. Just as at e.n.o. energy great value is placed on solidarity with the Mecklenburg-Western Pomerania region. Since the site for the prototype is located in Mecklenburg-Western Pomerania the OSPA has agreed to support local company e.n.o. energy, thus also boosting Mecklenburg’s economic power and, in particular, the region’s wind energy industry. Katrin Beckmann, Lars Biebel


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A following wind for wind energy participation certificate

High reliability. And a good windmill. The e.n.o. 82 with the advanced care protection package.

Strong interest in e.n.o. energy participation certificate The new e.n.o. energy wind energy participation certificate is benefitting from the positive aspects of sustainable investment. Although only approved by the Bafin supervisory board and issued in December 2009, an impressive number of investors have already put their money into the participation certificate offered by the national fullrange supplier of wind energy solutions. The security has generated interest from both private and institutional investors. The latter, with their professional perspective, recognise the value of a ‘green’ investment as a good addition to their clients’ portfolios.

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Interview with Thomas Gipp

The successful launch of the new e.n.o. energy participation certificate can be explained by the mixture of good terms and favourable framework conditions. Investors are thus supporting the expanded use of wind turbines both nationally and internationally, since, in addition to projects in Germany, the capital can also be used for new e.n.o. energy projects in growth regions Italy, France or Sweden. Parallel to this,

participation certificate holders also receive an attractive rate of return: the security has an annual fixed rate of 7 percent. There is also an additional dividend payment based on annual net profit, which can amount to a 3 percent return. 2009 saw 952 new wind turbines coming on stream in Germany, representing a 4.7 percent growth rate. The total installed performance of German wind turbines is now 25,777 MW. This is an increase of eight percent. Wind energy thus today provides the lion’s share of Germany’s eco-power. Official subsidies, both national and international, and the necessity of gradually making energy production more independent of fossil fuels and atomic energy also promise a continuingly stable market. Detailed information on investing in the © greenwoodworx wind energy market and the new e.n.o. energy wind energy participation certificate can be requested via the free telephone service number 0800-588 9675 or downloaded from the web site www.windenergie-investment.de. A recording of the interview with CFO Thomas Gipp can be accessed via the web site, where a security prospectus and purchase contract can also be downloaded. Holger Schlösser

Nationwide service network

24 hrs hotline

Service & maintenance

Includes call-out harges

*From 3 wind turbines

We guarantee 97 %* availability for our wind turbines. The e.n.o. advanced care full protection package includes 24 hours remote monitoring and a nationwide maintenance and spare parts service. Even key components will be replaced within a maximum of eight weeks. And from the ninth week on we will pay you full compensation for any loss of revenue. For your success with wind. phone: +49 (0)381 . 20 37 92-0 www.eno-energy.com

Success with wind.


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T h e m a g a z i n e f o r s u c c e s s w ith w i n d

Test series for the “Ordinance on System Services by Wind Energy Plants” (System Service Ordinance SDLWindV) FRT* tests for the e.n.o. 82 commence Following thorough preparations the test series to confirm the e.n.o. 82 wind turbine’s compliance with SDLWindV requirements commenced in late February. The tests focus on field trials to determine the machine’s behaviour (generator) in the case of grid voltage dips. The machine must be capable of continuous operation without shutting down or disconnecting from the grid if such errors occur. Parallel to this, the generator system must supply a defined, capacitive reactive current to support the grid. To confirm these functions grid short circuits are provoked on the medium voltage side and the resulting grid power and voltage processes are recorded. The short circuits are caused using special medium voltage control units located in containers outside the

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Measurements at the e.n.o. 82 in Fienstorf

wind turbine. This allows simulation of a wide range of voltage dips, which are required to confirm compliance with SDLWindV requirements as well as various regionally specific grid codes. Initial tests have shown that elaborate

preparations to improve machine efficiency as regards the expanded requirements have been an unqualified success. The extensive alterations to the machine’s control system thus proved to be fully functional. As a result the machine continues to operate without any errors during all grid short circuits. Additions to the generator alternatorconverter system have also proven themselves operational. As soon as fine tuning of the set-up for grid support has been completed the test series for certification will commence. Unit certification as per SDLWindV will be granted upon completion of these tests.

Controller optimisation for the e.n.o. 82 Within the scope of preparations for the certification tests as per SDLWindV the e.n.o. 82 – 2.0 control system underwent wide ranging alterations and additions. At the heart to this work was a total overhaul of the machine’s controller to improve its controllability dependent on prevailing grid requirements. This makes it possible to vary the machine’s active and idle power supply across a wide range. Depending on requirements this can take place via the machine itself or via an overriding controlling system (e.g. park control). The relevant interfaces have also been implemented.

In addition to functionalities to control performance, algorithms to optimise overall controlling behaviour were implemented. They were specifically developed to improve power output while simultaneously reducing machine loads. The first results of new performance curve measurements demonstrate the positive effect of the controlling measures.

Commencement of assembly of the e.n.o. 92 - 2.2 prototype Following conclusion of extensive testing of the the newly developed e.n.o. 92’s components and subsystems the prototype development phase is now merging seamlessly into prototype assembly and validation. The gear, generator, converter and rotor adjustment system in particular have successfully passed the test bed stage and are now ready for assembly. The assembly process for the prototype also marks commencement of the validation phase, during which the newly developed concepts and components must prove that they are suitable for practical use. Following delivery of most of the prototype’s components its assembly can now begin. In keeping with e.n.o. energy systems GmbH’s philosophy the hands-on assembly work will be carried out jointly by technicians and engineers. This facilitates a productive exchange of ideas between the production and construction departments, with the objective of creating an assembly- and maintenancefriendly machine. Now that assembly has commenced the entire e.n.o. energy workforce is looking forward excitedly to the erection of the first e.n.o. 92 prototype, planned for May. *Fault ride-through Stefan Bockholt


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e.n.o. energy project purchasing and cooperation In addition to the planning department, responsible for project development, the project purchasing department represents another important mainstay for e.n.o. energy. The project purchasing department has close contacts with other planning offices and project developers active throughout Europe. Information on current projects is always kept up-to-date. “A positive additional effect is that e.n.o. energy’s network in the industry is being continually expanded,” say Michael Synder and Daniel Wegner, project purchasers at e.n.o. energy. Since 1999 the department has purchased and implemented numerous projects. (Visit our homepage www.eno-energy.com to view the reference list.)

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from left Michael Synder and Daniel Wegner

The most important task of our project purchasers is to procure suitable wind park projects for us to operate and/or for e.n.o. energy’s investors. Of interest in this regard are projects with the corresponding rights at all planning stages, in particular approved projects ready for construction as well as projects still at the planning stage. The purchase of completed wind parks is also an option. The project purchasing department examines projects offered by planners and considered attractive by e.n.o. energy. The parameters studied by Michael Synder and Daniel Wegner include profitability; wind conditions at the location; feasibility and the approvals procedure. Once a contract has been agreed for a project, all the rights, approvals and agreements required to erect and operate the wind park as well as the planning concept for the project are purchased. Following this, the takeover and transfer of all the approvals, rights, contracts, expertises, documents, services and required third party agreements needed to realise the relevant wind park and operate it in the long term are organised.

In order to ensure quicker, better project planning and more efficient project realisation, e.n.o. energy aims to build partnerships with the project developers. In such cases experience, know-how, knowledge and profile in the regions and the level of manpower available are of key importance. This results in a win-win situation for both parties. Furthermore, the deployment of an e.n.o. energy wind turbine in planned cooperation projects regularly results in additional benefits. e.n.o. energy GmbH also takes on planning if, for example, the project planner does not have the necessary financial and planning capacity to further develop and/or realise the planned project. e.n.o. energy’s experience and know-how in this regard are further influencing factors for the positive implementation of the project. “The best illustration of our successful strategy is our good relationship with numerous German project developers as well as, for example, with French companies via our branch office ‘Energie Eolienne France S.A.S.’.” explains Michael Synder. “This has enabled us to offer two French wind parks in our current tender.” BK

e.n.o. energy exhibition dates 2010 Visit our stand at the following exhibitions: Windpower in Dallas, Texas, USA, 23 May - 26 May 2010, Dallas Convention Center, Level 1 HUSUM WindEnergy in Husum, Germany, 21 September - 25 September 2010, Exhibition Centre, Hall 3, Stand 3E07 RENEX in Istanbul, Turkey, 9 December - 12 December 2010, Expo Center, Hall 1


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T h e m a g a z i n e f o r s u c c e s s w ith w i n d

Project development by the planning department In recent weeks additional new staff have joined the e.n.o. energy planning department, which has also been restructured. As a result, the realisation of our own projects has been optimised and we are also able to carry out project work for external clients more effectively. Thanks to the department’s reorganisation it is now possible to more effectively manage the numerous, mainly new projects. Planning activities in Germany are currently concentrated in the federal states of Saxony-Anhalt, Brandenburg and Mecklenburg-Western Pomerania. In Saxony-Anhalt some 10 projects with a total performance of around 110 MW, primarily in the Halle/Saale region, are currently being managed. They are at different stages of development, i.e. from

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In Brandenburg 7 projects with a total performance of 65 MW in the LausitzSpreewald region are currently ongoing. Similarly to Saxony-Anhalt a wide range of differing development stages must be taken into consideration. Furthermore, there are additional areas in northern Brandenburg, where e.n.o. energy is working on preparing approvals applications for a total of some 10 MW. In e.n.o. energy’s home state of Mecklenburg-Western Pomerania the planning department is currently working on 4 projects with an approx. 10 MW output. In central Mecklenburg preparation of the sites for the e.n.o. 82 – 2.2 and e.n.o. 92 – 2.2 prototypes is underway so that erection of the turbines can begin in May as planned. In addition to this, so-called “white areas” are being developed. The term refers to areas which are potentially suitable for wind energy production and for which no regional planning exclusion criteria exist. BK

Concreting work for construction of foundations.

Reinforcing body with mounted FET

wind priority sites secured under private law to preparation of approval application procedures through to ongoing procedures. There are also additional fields of activity in northern SaxonyAnhalt.

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1st wind turbine at the Plauerhagen wind park

following its erection

Balance sheet protection insurance The technology of e.n.o. energy wind turbines is protected by comprehensive service and maintenance packages. Customers can choose between the e.n.o. basic care and e.n.o. advanced care options. During discussions we are, however, often asked what happens in the case of a serial defect. This is something we have also considered. In order to have coverage in the event of a serial defect affecting e.n.o. energy wind turbines we have added socalled “balance sheet protection coverage” to an existing machine guarantee insurance policy. As a result, the serial defect clause, which excludes an insurance payout in the event of a serial defect, was nullified. In other words, serial defects are now also covered, effective immediately. The guarantee risk has thus been reduced to a minimum, which is in the interest of both manufacturer e.n.o. energy as well as the wind park operator. Thanks to this balance sheet protection coverage e.n.o. energy wind turbines have gained a kind of ‘upgrade’, since insurance companies only grant guarantee coverage for serial defects following comprehensive, in-depth technological examinations. The highly regarded insurance company MARSH (see e.n.o. mag 2-2009) has provided balance sheet protection coverage since late 2009, when the Plauerhagen Wind Park in Mecklenburg-Western Pomerania was completed. BK


13

Eikboom - Professionals for nacelle housings The manufacturing of nacelle housings for wind turbines demands the highest manufacturing quality possible, since the nacelles must withstand extreme temperature variations, rain, snow, ice and storms for at least 20 years.

The two halls for the production of the plastic used for nacelle housings at Eikboom GmbH are located in Hinrichsdorf – in other words just a stone’s throw from e.n.o. energy’s wind turbine manufacturing plant. Plastics production includes model, mould and prototype construction as well as serial production.

the centre of Rostock, where the entire room furnishing division (decoration, carpentry, the laying of floor coverings and upholstery) is located. Clients include, among others, shipping companies and hotels. Eikboom GmbH also carried out the room furnishing of the office complex attached to the e.n.o. energy production hall.

The production halls cover areas of 1,200 and 1,300 m². A working height of up to 7 m is possible. The rolling shutter gates measure 4.5 m x 6.0 m. Integrated cranes enable loads of 2x 3.2 t or 3x 5 t to be moved. These prerequisites allow the manufacturing of any component desired in any dimensions required. The largest component manufactured to date was the nacelle housing for a REpower offshore wind turbine: 25 m long, 6 m wide, 6 m high and weighing 14 t.

Eikboom GmbH’s comprehensive product range thus illustrates the company’s high degree of competence in very diverse technologies. These include, in particular - Model building - Mould building - Hand lay-up techniques - Vacuum film processes - Fibre resin injection processes - Glass fibre reinforced plastic components - Use of unsaturated polyester resins, vinyl ester resins, acrylic resins and epoxy resins

In addition to the production facility in Hinrichsdorf a further site is located in

The advantageous close proximity of the companies made it seem natural that

© Eikboom

Å

Nacelle housing for e.n.o. energy

• 1956 Company founded by 7 Rostock craftsmen • 1968 Introduction of fibre reinforced plastics into the production process • 1976 Boat building with a focus on sports and leisure boats • 1990 Transformation into a GmbH limited company with Decoration, Upholstery, Floor Coverings, Mould and Model Building and Glass Fibre Reinforced Plastics divisions • 1994 Construction of first wind turbine housing (800 kW) • Prior to and including 2009 Manufacture of over 2,400 wind turbine housings (600 kW to 5 MW) • Major customers: e.n.o. energy, Nordex, REpower, Innovative Windpower • 2008 Turnover: 6.7 m EURO • 48 employees More information www.eikboomgmbh.de

Eikboom GmbH should also supply the nacelle housings for e.n.o. energy’s wind turbines. From the outset projects were jointly planned and realised, whereby the close cooperation also guarantees the highest manufacturing quality possible. The cooperation is thus beneficial to both companies and there are plans to expand it even further in future. BK

© Eikboom

Å

Production halls in Rostock-Hinrichsdorf


14

T h e m a g a z i n e f o r s u c c e s s w ith w i n d

Reliable remote diagnoses for wind energy turbines µ-Sen ensures high degree of efficiency thanks to CMS Are wind turbines a reliable source of power? e.n.o. energy puts its trust in the innovative technology and expertise of µ-Sen GmbH to answer this question. Holger Fritsch (45)

The Rudolstadt, Thuringia-based company already monitors over 1,000 wind energy turbines with a total performance in excess of 1 GW. Using so-called “condition monitoring systems”, whose key function is to record body sounds from the main components in the drive-train and transmit them via Internet to the service centre in Rudolstadt, negative status changes of the main bearing, generator bearings and gearbox can be recognised very early. The option of making sensor signals audible is very useful in this regard, allowing turbines to be not just remotely viewed via the Internet, but also to be listened to. Knocking sounds coming from the

Å

Measurements in the nacelle

gear teeth or the bearings monitored are thus easy to identify. Such additional information from the turbine means that the planning of service visits or repairs required is much easier. Optimising these activities pays off for the operators of the new e.n.o. wind turbines from the very first day and plays a role in the efficiency of the e.n.o. 82 and e.n.o. 92 turbines currently in production. Over and above this, modern CMS such as the µ-Sen Omega Guard system also facilitate recording of additional measurements such as recognition of unbalanced bearings; detection of icing and rotor blade and gear lubrication monitoring. The benefit of CMS is thus no longer limited to the timely indication of damage, but also helps to identify the additional strain on components which can be caused by misalignments or imbalances. CM systems thus © µ-Sen contribute to lengthening the

• 1987-1993 Studied experimental physics at Otto-von-Guericke University, Magdeburg • Gained a degree in physics • 1993-1997 Research assistant at the Otto-von-Guericke University, Institute for Process Control and Electronics • 1998 Project engineer at µ-Sen GmbH, FEM simulation, sensor design, machine diagnosis, data analysis • Since 2001 authorized officer of µ-Sen GmbH • Since 2009 Managing Director, Head of Marketing and Sales For more information www.my-sen.de

service life of components. Reliable, efficient ice and imbalance detection in particular produce direct increases in output. The key factor in the successful use of CM systems is, however, an overall concept. As well as analysing the data recorded this concept must also include methods to implement the recommended actions indicated by the analysis. In addition to the tried-and-tested Omega Guard CM system, certified by Germanischer Lloyd and currently used for Multibrid offshore turbines, GL also certified the µ-Sen monitoring centre. The high quality of the remote diagnosis offered is thus guaranteed. The basis for a continued successful partnership with e.n.o. energy. Holger Fritsch


15

Technical Data  e.n.o. 92 - 2.2

General type name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . e.n.o. 92 rated power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.200 kW hub height above ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 m,103 m,123 m rated wind speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ca. 13 m/s cut-in wind speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 m/s cut-out wind speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 m/s Rotor diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92,8 m relative position to tower (luv/lee) . . . . . . . . . . . . . . . . . . . . . . luv, rigrid rated speed/speed range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14,8 rpm rotor blade pitch setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . variabel swept area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.764 m²

Calculated Power Curve e.n.o. 92 - 2.2

Rotor blade manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LM Glasfiber type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LM 45.3 P material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GFK/GRP length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45,3 m

at 6-12 % turbulence, calculated efficiency, uncertainty ±5 %

Gearbox manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bosch Rexroth design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . combined spur/planetary gear transmission ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ca. 1:111

2.500

P (kW)

2.000

Generator manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VEM Sachsenwerk numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . synchronous generator rated speed(s)/speed range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450-1650 1/min / rpm Operational data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Hz / 690 V

1.500 1.000 500 0

5

10 v (m / s)

15

15

20

Tower manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . various type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 m, 103 m, 123 m design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . tubular tower, concrete Yaw control design (active/passive) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . active drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . electromechanic Control system/control kind of power control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pitch actuation of power control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . electromechanic manufacturer of control system . . . . . . . . . . . . . . . . . . . . . . . . e.n.o. energy Other electric installations kind of interconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full Power Converter manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ABB harmonic filter (yes, no) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . yes Brake system brake system (primary) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pitchsystem activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . electromechanic type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . aerodynamic brake system (secondary) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disc Brake activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . electrohydraulic type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Friction Noise level calculated noise level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104,8 dB(A)

Stand 10/2009 | subject to change


New energy from Rostock.

e.n.o. energy is bringing an even bigger breath of fresh air to Rostock. For the last year the company has been building wind turbines here, using the experience gathered in over ten years as a developer and operator of wind farms. And with over 70 employees. From its new headquarters in the historic Hanseatic city the industry’s shooting star manages branch offices in France, Italy, Sweden and Turkey. For cutting-edge technologies and clean energy all over Europe. e.n.o. energy GmbH Am Strande 2 e 18055 Rostock . Germany Phone +49 (0)381 . 20 37 92-0 www.eno-energy.com

Success with wind.


eno mag 2010 (englisch)