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SPSE MEASUREMENT SYSTEMS PROTECTION AND TRACTION POWER SUBSTATION

FTC_541000006_01


SUBSTATION EQUIPMENT FOR COMMUNICATIONS BETWEEN CABLE (DRIVE) The communications system between substations, Traction has been specially designed so that once detected the opening of a substation extrarrápido overcurrent on the line, pass this information to the substation that feeds the line of collaterally energy, and open in the extrarrápido shortest possible time of it. This new team of communications between substations, born motivated by the need to improve response times to equipment on the market in order to minimize the damage that could result in the substations by the increase in power that is being installed on the Web, due to the demanding needs of new traction units and the density of traffic present on the routes. The new situation requires the adjustment of the maximum current extrarrápidos for your property, causing the current situation is a major risk in the facilities. This risk is minimized with a set of protective equipment whose characteristic response time compared to the evolution of a fault, it is extremely important as it helps to minimize the damage by the elements of power.

The system comes as a set of cards to be mounted in a subastidor, which is associated the card interconnection Back Panel. The set of cards is: •

Subastidor and interconnection plate

Power Supply

Interface Digital Input / Output

Hybrid, Filter (optional)

Processor Board (DSP_19, 2K 32K 8 +8)

The last three appear in duplicate or triplicate if you want to install a substation two or three protective equipment respectively. The power supply is common for trailers to be installed. If not for this, we could say that if they split the team into three equal pieces operating independently.


The team consists of two terminals at the ends of a two-wire analog trunk. Each terminal generates a signal MFM (Multi-Modified) composed of two frequencies of eight selected to ensure the reliability of the command. These two frequencies are generated by dividing into two blocks of eight frequencies and choosing one of each block. The two frequencies chosen from the 16 possible combinations, are encoded and decoded at both ends to get up to four separate controls in each direction. This equipment is designed and engineered with intrinsic safety criteria so that any anomalies (perturbations in the channel, ruling TX, RX failure, etc..) That precludes proper functioning, causing the shot to all extrarrรกpidos. Given the nature of the application to be met by the system, it is designed, using the latest detection techniques that minimize the response times from one end to the anomaly is detected until the collateral extrarrรกpido fired. The technique for the detection of these frequencies is performed by digital signal processor (DSP), which allows reliable detection of these signals at the other extreme, very small sampling times, even in precarious conditions of the medium (in cable insulation defects in power lines, interference, etc..), or a poor signal / noise.


SUBSTATION VOLTAGE DETECTORS The purpose of the SDTS, is the signaling voltage on the outputs of the feeders and bars of the substation. This system monitors, voltage permanently in these elements and provides an output indicative of presence in overhead when the voltage exceeds the programmed threshold. Additionally, it provides a signal indicative of failure of the system and an analog output proportional to the tension in catenary.

The sensor is a set of two resistive dividers built into the structure of a transformer bushing. Extracted two low voltage signals, proportional to that in LAC. The sensor is installed on the porch, making the transmission of data over optical fiber to ensure insulation. Its function is to continuously measure the tension at the point where the measure is connected to the comparator. The functions built into to device is: •

Modularity.

Cutting-edge technology.

High reliability in measures of stress.

No calibration required

Two measures for reliability


LOCAL CONTROL POSITION SSEE (ERT) The local post SSEE control consists of an industrial CPU cards, I / O and auxiliary equipment necessary to achieve monitoring the status of all elements of the substation. The number of signals is variable depending on outfit number of elements that have the substation, the system being designed for maximum capacity, so that adding new elements is quite simple, since it uses a communication bus.

Some of the main features are: •

Configuration of all elements connected field.

Control of digital inputs / outputs and analog inputs directly connected.

• • •

Possibility of up to four security locks on each section.

Communication with the remote control center for

Incorporates user access control by reading

remote installations (IEC 870-5-101 protocols or

identification card.

IEC 870-5-104).

Working with Request / Grant takes command or

Storage of historical alarms and events. Allows

automatically by local commanders.

selective search of events and alarms by item, date

Local administration of operators or downloading

and time ... The operator can store the complete

them from the remote control center.

history or queries you make to a USB external storage device.


EQUIPMENT FOR COMMUNICATIONS BETWEEN SUBSTATIONS FOR (DRAG) The communication system Traction Substations optical fiber, has been specially designed so that once detected the opening of a substation extrarrรกpido overcurrent on the line, pass this information to the substation that feeds the line of collaterally energy, and open in the shortest possible time extrarrรกpido it. This new substation communications equipment by optical fiber, born motivated by the need to improve response times of existing equipment on the market in order to minimize the damage that could result in the substations by increasing the power is installed on the network that emerged from the needs demanded by the new traction units and the density of traffic present on the routes.

The new situation requires the calibration of the maximum current extrarrรกpidos of their property, causing this situation a major risk in the facilities. This risk is minimized with a set of protective equipment whose characteristic response time compared to the evolution of a fault, it is extremely important as it helps to minimize the damage by the elements of power. The link between two substations consists of two terminals at the ends of a fiber optic digital link. Each terminal generates and receives signals simultaneously a number of digital frames consist.

This equipment is designed and engineered with intrinsic safety criteria so that any anomalies (perturbations in the channel, ruling TX, RX failure, etc..) That precludes proper functioning, causing the shot to all extrarrรกpidos. Given the nature of the application to be met by the system, it is designed so that the detection times you minimize the response times from one end to the anomaly is detected until the collateral extrarrรกpido fired.



ftc-541000006-01-spse-IN