Product/Technical Services
Line Differential Protection IED GRL200
Product Overview
The GRL200 line protection IED provides both line differential and distance protection functions in a single, powerful package. The high-speed, phase-segregated line differential protection is applicable to both overhead lines and underground cables with up to three terminals, communicating either over direct fiber optic links or via telecommunications multiplexer interfaces. Zero-phase sequence differential protection enables sensitive detection for high-resistance faults. Optional bay control and monitoring functions are also provided within the flexible and user-friendly GR-200 Series platform.
Technical Description
Protection functions
High-speed, phase-segregated line differential protection
Zero phase sequence current differential protection for high resistance earth faults
Charging current compensation for long lines and cable circuits
Teleprotection via direct fiber optic link or IEEE C37.94 interface to a telecommunications multiplexer (ITU-T X.21 and G703 interfaces are also available via a protocol converter)
Distance protection with six independent zones
Backup non-directional and directional earth fault command protection
Backup non-directional and directional overcurrent protection
Non-directional and directional negative phase sequence overcurrent protection
Thermal overload protection
Broken conductor detection
Circuit breaker failure protection
Switch-on-to-fault (SOTF) protection
Stub protection for one-and-a-half breaker system
Phase to neutral and phase to phase under/overvoltage protection
Under/overfrequency protection
Out-of-step protection
Cold load protection
Power swing blocking function
Inrush Current Detector
Single or multi shot auto-reclose
Fault locator
Control functions
Voltage Synchronism check
Circuit breaker and isolator control with Switchgear interlock check
Programmable automatic sequence control
Metering and recording functions
Metering
- Voltages, Currents, Power, Frequency and Power factorRecording
- Event record
- Fault record
- Disturbance record
Communication Protocols
IEC 61850 (Ed 1.0 and 2.0) or IEC 60870-5-103 for communication with a Substation Automation System
IEC62439 PRP/HSR/RSTP for communication redundancy
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 Machine Interfaces
Selection of HMI: Standard, Large or Separate large LCD
24 configurable LEDs with tri-state and red/green/yellow selectable
7 programmable function keys for easy operation
PC interface (USB Type-B and Ethernet ports)
Jacks for monitoring of internal signal
