Product/Technical Services
Distance Protection IED GRZ200
Product Overview
The GRZ200 distance protection IED has been designed to provide distance protection and control functions for application to transmission lines and distribution feeders at all voltage levels. The device can be applied to the protection of both long and short lines, parallel lines and underground cables, and can also be used to provide backup protection for generators, transformers and reactors. Optional bay control and monitoring functions are also provided within the flexible and user-friendly GR-200 Series platform.
Technical Description
Protection functions
Time-stepped distance protection with six independent zones
Command protection distance schemes (PUP, POP, BOP and UOP) and non-directional and directional earth fault schemes (POP, BOP and UOP)
Switch-on-to-fault (SOTF) and stub protection
Power swing blocking
Out-of-step trip protection
Overcurrent guard scheme for distance protection
Circuit breaker failure protection
Non-directional and directional overcurrent protection for phase and earth faults
Non-directional and directional negative phase sequence overcurrent protection
Undercurrent protection
Thermal overload protection
Broken conductor detection
Phase to neutral and phase to phase overvoltage protection
Positive and negative sequence overvoltage protection
Earth fault overvoltage protection
Phase to neutral and phase to phase undervoltage protection
Positive phase sequence undervoltage protection
Under/overfrequency protection
Inrush current detector
Cold load protection
Control functions
Single-shot (single / three / single + three phase) or multi-shot (three phase) autoreclose
Synchronism voltage check
Circuit breaker and isolator control
Switchgear interlock check
Programmable automatic sequence control
Metering and recording functions
Metering
- Power system voltages, currents, power, frequency and power factorRecording
- Event record
- Fault record
- Disturbance record
- Fault location function
Communication Protocols
Communications with substation automation system IEC 61850-8-1 (Ed 1.0 and Ed 2.0) or IEC 60870-5-103
Communications with process level equipment (Merging Unit) IEC 61850-9-2.
Ethernet redundancy protocol IEC62439-3 PRP/HSR/RSTP
Time Synchronization
Time synchronization with external clock server by SNTP, IEEE 1588, and IRIG-B
Process Bus (Client)
| Supported Sample Value Stream | 4800Hz ASDU 2 (60Hz x 80sp or 50Hz x 96sp) 4800Hz ASDU 1 (50Hz x 96sp) 4000Hz ASDU 1 (50Hz x 80sp) |
|---|---|
| Max. number of analog channel per stream | 8 |
| Max. number of stream | 4 |
| Max. number of Process Bus communication port per IED | Max. 2 ports (redundancy options: PRP/HSR) |
Cyber Security
Extensive cyber security features:
Port and protocol control
Complexed password for extra security user authentication
Security event logging
Encrypted communication between GR-TIEMS and IED (Optional)
Role-based Access Control (RBAC) based on IEC 62351-8 (Optional)
Human interfaces
Selection of HMI: Standard LCD / large LCD
24 configurable tri-state LEDs selectable red/green/yellow
7 programmable function keys for user demand operation
Personal computer interface (USB and Ethernet ports)
Monitoring jacks for internal circuit test
