PROTECTION IN ENERGY TRANSMISSION AND DISTRIBUTION LINES

Immediate detection of a fault in any point of energy transmission and distribution lines and ensuring system reliability
It is important. The systems used should be sensitive enough to detect even the slightest error current and provide safe operation under harsh outdoor conditions.
and in accordance with IEC61850 standards. ABB's Relion protection and control devices used in sensitive systems

Protection applications in transmission lines;;

Bay Control

Control, monitoring and protection of circuit breakers, disconnectors, earth switches in different switch configurations. Used
The products have a wide range of applications and provide the requirements of IEC61850.

Busbar Protection - Busbar Protection

Protection and monitoring of busbar, mesh corners and T-connections from medium to very high voltage levels are ensured. With large I / O capacity
single or double bus bars with or without transfer bus, circuit breakers are protected.

Line Differential Protection - Line differential protection

Protection, monitoring and control of overhead lines and cables up to five lines are provided. Line-separated differential of products used
With the protection function, reliable single / double / three-phase on / off and synchronous controlled automatic closing can be done. In addition, transformer feeders
generator and transformer blocks can also be controlled.

Transformer Protection - Transformer protection

Quick selective protection, monitoring and monitoring for all kinds of transformers (eg two and three winding transformers, amplifier transformers, power stations and special railway transformers)
control is provided. In addition, auto-transformers can be combined with switching for phase shift transformers and shunt reactors.
With the protection of up to six three-phase current-limiting inputs, multiple circuit-breaker transformers can be provided. Communication capacity
can be integrated with other devices in the system or can be used alone.

Breaker Protection - Cutter protection

Failure of the breaker error protection or automatic reclosure function to be within the outline protection
The cutters can be protected independently. In addition, local backup protection, synchronization, synchronization control and
With the energizing control features, safe protection is provided for many applications.

Line Distance Protection - Line distance protection

Extensive protection for overhead lines and cables or overhead lines and cable combinations is provided. Selective single-phase and three-phase on / off,
synchronous and synchronous controlled automatic shutdown, power fluctuation detection and wide communication logic
protection is provided. Transmission lines, cables or grounded networks with five-zone distance protection for phase-to-phase and phase-to-earth faults
protected. The products used also have overcurrent protection and communication capability.

Wide Area Protection

Efficient and real-time control, monitoring and protection of power systems spread over a large area. Products used as phasor power
provides AC voltage and current to the system (positive, negative, zero-pass or up to 8 analogue phasors). Voltage and currents
Measuring with high accuracy eliminates the need for external measurement transducer. IEEE C37.118, IEC 61850-8-1 and DNP3.0 communication capacity
facilitates integration into existing infrastructure system. A variety of protection and control functions can be performed with the phasor data measurement function. Smart
provides the perfect solution for network applications.

Electrical Protection in Rail Transportation Systems;

All types of protection, control and monitoring functions with protection relays and control panels developed specifically for rail transport systems
It is performed.
Protection panels designed using the latest numerical technology as well as protection relay for transformers as well as feed protection function
bears. Relays with large LCD display and communication port monitor and control important values such as current / voltage / power factor
It provides.
Functions;
Digital distance protection
Instantaneous overcurrent protection
Incorrect phase sequence protection
EMI / EMC noise analysis
Fuse failure detection
Automatic shutdown
Circuit failure detection
Breaker failure detection
Transformer protection
Unbalanced current protection

Protection applications in distribution lines - OG

Protection and control products with IEC 61850 standards, all kinds of distribution systems from secondary infrastructure to NCC level
protection, control, monitoring and communication infrastructure. Thanks to protection and control devices,
and it is possible to collect, measure and report data on smart grid elements that support the investment management system.

Applications
Alarm Reporting
Cutting protection
Disturbance Recorders
Network line protection and control
Line differential protection
Arc protection
Network automation
Motor protection
Transformer protection

Primary / Secondary Field Performance Tests;

The performance tests we have performed in order to determine the compliance of the switchyard areas with the quality standards can be classified as follows:

Secondary Protection Relays Tests

1. Overcurrent relay tests
   Voltage relay tests
   Line distance protection relay tests
   Line differential protection relay tests
   Transformer & busbar differential protection relay tests
   Motor protection relay tests
   Generator protection relays tests
   Breaker failure protection tests

Power Transformer Tests

2. Ratio test
   Winding resistance measurement test
   Insulation test
   Zero sequence impedance test
   Short circuit voltage testCurrent / iron losses test

Tests of High Voltage Line Feeders

1. Line parameters tests
   Zero sequence impedance tests
   Positive sequence impedance tests

  Current Transformer Tests

1. Ratio test
   Load test
   Winding resistance measurement test
   Saturation test
   Insulation test
   Polarity tests

 Voltage Transformer Tests

1.  Ratio test
   Insulation test
   Polarity test

  Cutting Tests

1.  On-off time measurement test
   Contact resistance measurement test
   Insulation test

  Separator Tests

1. Contact resistance measurement test
   Insulation test