Product/Technical Services

Line Differential Protection for Direct Fibre & Pilot-wire Application GRW200

Product Overview

GRW200 is advanced numerical feeder differential protection IED implemented on Toshiba's next generation GR-200 series platform. GRW200 is designed to provide phase-segregated line differential protection for use with metallic pilot wire or direct fibre optic communication channels. This powerful and user-friendly IED will provide you with the flexibility to meet your application and engineering requirements in addition to offering excellent performance, outstanding quality and operational peace of mind.

  1. High accuracy, phase-segregated line differential protection for use over metallic pilot wire or direct fibre optic communication channels suitable for protection of short overhead line or cable circuit

  2. Overcurrent guard scheme, integrated channel monitoring, magnetizing inrush detection, and various range of back-up protection functions

  3. Multiple communication protocol for easy integration with substation automation system such as IEC 61850, IEC 60870-5-103, MODBUS/TCP and IEC 62439-3 PRP/HSR


Technical Description

Protection Functions

  1. Phase-segregated Line Current Differential Protection

  2. Supervision of Protection Signal

  3. Overcurrent Guard scheme for Differential Protection

  4. Phase Fault Overcurrent Protection

  5. Earth Fault Protection

  6. Sensitive Earth Fault Protection

  7. Phase Undercurrent Protection

  8. Thermal Overload Protection

  9. Switch On to Fault (SOTF) Protection

  10. Broken Conductor Protection

  11. Circuit Breaker Fail (CBF) Protection

  12. Inrush Current Detector

  13. Cold Load Protection

Control Functions

  1. Switchgear Control

  2. IED Mode Control

  3. Interlock Check

  4. Programmable Logic Control (PLC)

Monitoring Functions

  1. Trip Circuit Supervision

  2. Automatic self-supervision

  3. Circuit Breaker Contact Supervision

  4. Circuit Breaker Condition Monitoring

General Functions

  1. Eight settings groups to cover various operating conditions

  2. Time synchronization by external clock via SNTP or using IRIG-B

  3. Password protection for settings and selection of local/remote control

  4. Simulation and test function to check protection/control function

  5. Internal circuit checks using forcible signal

Metering and recording functions

  1. Metering

    1. Local/Remote terminal current, differential current, positive & negative phase sequence current.

  2. Recording

    1. Event Record up to 1024 events

    2. Fault Record up to 32 faults

    3. Disturbance Record

Hardware Flexibility

  1. Various models and hardware options for flexible application depending on system requirement and controlled object

  2. Configurable binary inputs and outputs

Communication Interface

  1. Various option of system interface - RS485, fibre optic 100BASE-FX, 100BASE-TX/1000BASE-TX

  2. Support for multiple communication protocol - IEC 61850 (Ed 1.0 and 2.0), IEC 60870-5-103, MODBUS/TCP, IEC 62439 PRP/HSR/RSTP

Cyber Security​

Extensive cyber security features:

  1. Port and protocol control​

  2. Complexed password for extra security user authentication​

  3. Security event logging​

  4. Encrypted communication between GR-TIEMS and IED (Optional)​

  5. Role-based Access Control (RBAC) based on IEC 62351-8 (Optional)​​

Human Interface

  1. 21 Character width, 8 Line LCD with backlight

  2. 14 LEDs (2 pre-configured LEDs + 12 configurable LEDs)

  3. 5 programmable function keys for user demand operation

  4. Personal computer interface (USB 2.0 port and Ethernet ports)

  5. Relay setting and configuration using GR-TIEMS Software