sbi plaquette bus bare dumper 2013_3_sbi 18/09/13 09:08 Page1
ENERGY IS OUR JOB SICAME GROUP
BUSBAR DAMPERs AEOLIAN VIBRATION SOLUTION
sbi plaquette bus bare dumper 2013_3_sbi 18/09/13 09:08 Page2
SICAME GROUP
busbar DaMPErs,
The effects of wind on busbar substation High voltage (HV) and ultra high voltage (UHV) substations are, depending upon their geographical location, exposed to climatic conditions: especialy wind. The wind causes sinusoidal turbulence to the substation busbars that in return causes variations in the carrying capacity with the fluid (air) moving in the same way as on an aeroplane's wing (fig1). In certain frequency conditions, busbars that are exposed to the wind can reach their natural resonance frequency (low frequency) that creates severe vibrations (fig2) that can damage the installation. To resolve this problem, a means of shock-absorption must be fitted to the tube that opposes and dissipates the vibration, taking into account the tube's natural resonance frequency.
fig1
The most common solution to date is to place a cable within the tube. But this cheap method is not satisfactory as the cable subjected to the vibrations may come out of the tube if the end caps are not properly tightened or welded then could be loose, creating a short circuit when they touch the ground. Furthermore, if the cable within the conductor starts to vibrate, it may produce a noise that would be registered as a false-positive for a malfunction.
fig2
Magnitude of vibrations on a tube
Balance of forces on a tube exposed to wind LIFT
WIND Y X
DRAG
Z
L(t) = ½ Cy U2 d WEIGHT
L = lift Cy = dimensionless cœfficient
= air density U = wind impact speed d = conductor diameter
sbi plaquette bus bare dumper 2013_3_sbi 18/09/13 09:09 Page3
the smart solution The study of prevailing winds
Example of a map of meteorological stations measurements in Holland and risk levels of wind causing vibrations
Above all else and to effectively protect the busbars and all other devices attached to them, a study of the prevailing winds, their directions and their forces during the seasons can provide precise data for the implementation of the necessary protections in the proper way.
HOORN (Terschelling)
LAUWERSOOG
251
277
VLIELAND
NIEUW BEERTA
LEEUWARDEN
242
270
286
EELDE
280
This study is generally conducted according to local and seasonal weather data recorded on maps.
DE KOOY
STAVOREN
235
267 HOOGEVEEN
WIJK AAN ZEE
MARKNESSE
BERKHOUT
249
257
279
273 LELYSTAD
IJMUIDEN 225
HEINO
269
278
SCHIPHOT
TWENTHE
240
290 SOESTERBERG
VALKENBURG
210 330
The measured wind refers to the horizontal movement of air on a level of 10 meters above surface in any direction. In the phenomenon described before, the perpendicular laminar wind is the worst cause, without any gust or peak. It can be not perpendicular to the busbar, but its component in a plane parallel to land surface could affect maybe more than the first one. The value of wind database used is the average velocity mean in everyday registered. Along 10 years, each meteorological station has registered more than 3,500 values of wind speed, which it used in this document.
265
DE BILT 260
HOEK VAN HOLLAND ROTTERDAM
HUPSEL
DEELEN
CABAUW
283
275
348 HERWIJNEN
344
356 VOLKEL
VLISSINGEN
WITHELMINADORP
GILTZE-RIJEN
323
350
310
375
WOENSDRECHT
EINDHOVEN
340
370
391
WESTDORPE
ELL
319
377
MAASTRICHT KONINKLIJK NEDERLANDS METEOROLOGISCH INSTITUUT (KNMI) http://www.knmi.nl/
380
ARCEN
Risk 5 4 3 2 1
STATION
RISK
210 225 235 240 242 249 251 257 260 265 267 269 270 273 275 277 278 279 280 283 286 290 310 319 323 330 340 344 348 350 356 370 375 377 380 391
4 2 3 4 2 4 3 1 5 5 3 4 4 4 4 3 5 4 4 5 4 5 3 4 4 2 4 4 4 5 4 4 4 4 4 5
Lower 81 61 41 21 0
Upper 100 80 60 40 20
Color
sbi plaquette bus bare dumper 2013_3_sbi 18/09/13 09:09 Page4
SICAME GROUP
busbar DaMPErs,
busbar damper, the new solution from SBI Connectors and SALVI Being aware that the various current solutions are neither technically nor economically satisfactory, SBI Connectors in consultation with SALVI requested the participation of Milan (Italy) and Stellenbosh (South Africa) Polytechnic Universities in researching a new generation of dampers: the busbar damper. This new generation is suitable for the majority of situations and is highly efficient. Following positive results from experimental tests, the new damper offers the following advantages: - Protects and lengthens the lifetime of station equipment. - No maintenance is required because of the counterpoise's initial fixed setting. - Provides almost total dissipation of vibrations caused by wind. - Can be adapted to all existing stations. - Simple, quick configuration. - Cost effective.
SALVI is a global specialist in the design and manufacture of shock absorption systems for electricity carrying lines.
Our technical services are available to assist you with any queries about your installations.
SALVI is primarily specialised in front line technological projects that require the expertise of a team of engineers, sophisticated lab equipment and close collaboration with research centres and universities.
sbi plaquette bus bare dumper 2013_3_sbi 18/09/13 09:09 Page5
the smart solution Technical characteristics chart L (mm)
G (mm)
H (mm)
B D E F B D E A B D E F B D E F B D E F A B D E F A B C D E F A B C D E F
SDAM63BNS SDAM63DNS SDAM63ENS SDAM63FNS SDAM70BNS SDAM70DNS SDAM70ENS SDAM80ANS SDAM80BNS SDAM80DNS SDAM80ENS SDAM80FNS SDAM90BNS SDAM90DNS SDAM90ENS SDAM90FNS SDAM100BNS SDAM100DNS SDAM100ENS SDAM100FNS SDAM120ANS SDAM120BNS SDAM120DNS SDAM120ENS SDAM120FNS SDAM140ANS SDAM140BNS SDAM140CNS SDAM140DNS SDAM140ENS SDAM140FNS SDAM150ANS SDAM150BNS SDAM150CNS SDAM150DNS SDAM150ENS SDAM150FNS
1130 565 695 770 1130 565 695 1300 1130 565 695 770 1130 565 695 770 1130 565 695 770 1300 1130 565 695 770 1300 1130 1540 565 695 770 1300 1130 1540 565 695 770
120 57 57 57 120 57 57 120 120 57 57 57 120 57 57 57 120 57 57 57 120 120 57 57 57 120 120 120 57 57 57 120 120 120 57 57 57
330 106 106 106 330 110 110 440 330 115 115 115 330 120 120 120 330 125 125 125 440 330 135 135 135 440 330 670 145 145 145 440 330 670 150 150 150
Weight (kg) 10.0 4.3 4.6 13.8 10.2 4.5 4.6 13.9 10.5 4.5 4.8 14.0 10.8 4.7 4.9 14.1 11.1 4.8 5.0 14.3 15.0 11.6 5.0 5.3 14.5 15.3 11.9 16.4 4.6 4.8 14.1 15.5 12.1 16.6 4.6 4.9 14.1
O.D.
Damper model
SBI P/Nr
160 160 160 160 160 160 180 180 180 180 180 180 200 200 200 200 200 220 220 220 220 220 220 250 250 250 250 250 300 300 300 300 300
A B C D E F A B C D E F A B C D E A B C D E F A B C E F A B C E F
SDAM160ANS SDAM160BNS SDAM160CNS SDAM160DNS SDAM160ENS SDAM160FNS SDAM180ANS SDAM180BNS SDAM180CNS SDAM180DNS SDAM180ENS SDAM180FNS SDAM200ANS SDAM200BNS SDAM200CNS SDAM200DNS SDAM200ENS SDAM220ANS SDAM220BNS SDAM220CNS SDAM220DNS SDAM220ENS SDAM220FNS SDAM250ANS SDAM250BNS SDAM250CNS SDAM250ENS SDAM250FNS SDAM300ANS SDAM300BNS SDAM300CNS SDAM300ENS SDAM300FNS
L (mm) G (mm) H (mm)
Weight
1300 1130 1540 565 695 770 1300 1130 1540 565 695 770 1300 1130 1540 565 695 1300 1130 1540 565 695 770 1300 1130 1540 695 770 1300 1130 1540 695 770
15.8 12.4 16.9 4.7 4.9 14.2 16.3 12.9 17.4 4.9 5.1 14.4 16.8 13.4 17.9 5.0 5.2 17.3 13.9 18.4 5.1 5.4 14.7 18.1 14.7 19.2 5.6 14.9 18.6 15.2 19.7 5.9 15.2
120 120 120 57 57 57 120 120 120 57 57 57 120 120 120 57 57 120 120 120 57 57 57 120 120 120 57 57 120 120 120 57 57
440 330 670 155 155 155 440 330 670 165 165 165 440 330 670 175 175 440 330 670 185 185 185 440 330 670 200 200 440 330 670 225 225
M12
M H aprox.
SBI P/Nr
G L aprox.
Damper A, B, C
G M
H
Damper model
M12 L
Damper D & E G M
H
O.D. (mm) 63 63 63 63 70 70 70 80 80 80 80 80 90 90 90 90 100 100 100 100 120 120 120 120 120 140 140 140 140 140 140 150 150 150 150 150 150
M12 L
Damper F
sbi plaquette bus bare dumper 2013_3_sbi 18/09/13 09:10 Page6
SICAME GROUP
busbar DaMPErs,
Ask for our full range of HV and UHV substation accessories
Switchgear connectors
Dampers
Corona-effect protection
sbi plaquette bus bare dumper 2013_3_sbi 18/09/13 09:10 Page7
the smart solution Other equipment for substation (some examples of full ranges) PROTECTIVE EQUIPMENT SBI CONNECTORS provide a full range of safety equipement: - personnal protective equipement, - warning signs, - voltage detectors, - short circuiting and earthing systems.
CRIMPING TOOLS SBI CONNECTORS provide a full range of tools.
EARTHING EQUIPMENT SBI CONNECTORS provide a full range of earthing equipment.
ComST 07/13
sbi plaquette bus bare dumper 2013_3_sbi 18/09/13 09:10 Page8
SICAME GROUP
Your specialist in electrical connections
SBI Connectors España, S.A.U. C/ Albert Einstein, 5-7 Polígono Industrial Sesrovires 08635 Sant Esteve Sesrovires (Barcelona, Spain) Tel. : +34 93 771 58 73 • Fax : +34 93 771 39 20 • Email: substation@sbiconnect.es
www.sbiconnect.es