ABB RED670 Line Differential Protection Relay

ABB RED670: Line Differential Protection Relay

Product Overview

The ABB RED670 is part of the RELION® 670 series, a cutting-edge line differential protection relay designed for high-voltage power transmission systems. It provides comprehensive protection, control, monitoring, and communication capabilities for overhead lines, cables, and hybrid transmission networks. The relay is widely used in utilities, industrial plants, and renewable energy systems requiring secure and selective fault clearance.

Key Technical Parameters

1. Rated Inputs
   • Voltage: 100/110 V (phase-to-phase), 100/110/115 V (phase-to-neutral)
   • Current: 1 A or 5 A (configurable)
   • Frequency: 50/60 Hz (±5%)
2. Protection Functions
   • Differential Protection:
     • High-speed phase-segregated differential protection for lines and cables.
     • Adaptive compensation for capacitive charging currents.
     • Supports pilot and direct fiber-optic communication channels.
   • Backup Protection:
     • Distance protection (Z_L, Z_H), directional overcurrent, and earth-fault protection.
   • Additional Functions:
     • Power swing detection, auto-reclosing, and breaker failure protection.
3. Communication
   • Protocols: IEC 61850 (Edition 2), IEC 60870-5-103, DNP3, Modbus.
   • Channels: Supports up to 4 independent communication ports (Ethernet, FO, serial).
   • Synchrophasors: Compliant with IEEE C37.118 for PMU (Phasor Measurement Unit) applications.
4. Measurement & Monitoring
   • Real-time measurement of voltage, current, power, frequency, harmonics, and fault records.
   • Disturbance recorder with up to 128 fault events (64 analog + 64 digital signals).
5. Environmental & Mechanical
   • Operating Temperature: -25°C to +70°C.
   • Ingress Protection: IP52 (front panel), IP40 (rear).
   • Certifications: IEC 60255, IEEE, and ANSI standards compliant.

Core Product Features

1. Advanced Line Differential Protection
   • Utilizes IEC 61850-9-2 LE sampled values for high-speed differential calculations.
   • Supports redundant communication channels for reliability.
   • Immunity to CT saturation and system transients.
2. Flexible Communication Integration
   • Seamless integration with substation automation systems via IEC 61850.
   • Dual-channel redundancy (PRP/HSR) for mission-critical applications.
3. User-Friendly Interface
   • HMI (Human-Machine Interface): 5.7-inch color LCD with intuitive menu navigation.
   • Software Tools: Configured via PCM600 or DIGSI 5 engineering tools.
4. Adaptive Logic & Customization
   • Programmable logic (CFC) for custom protection schemes.
   • GOOSE messaging for fast peer-to-peer communication between relays.
5. Self-Diagnostics & Cybersecurity
   • Continuous self-monitoring of hardware and software integrity.
   • Role-based access control, encryption, and compliance with IEC 62351 security standards.
6. Application Versatility
   • Suitable for overhead lines, underground cables, and hybrid grids (AC/DC).
   • Supports multi-terminal line configurations (up to 6 terminals).

Typical Applications

• Transmission line protection (up to 500 kV).
• Renewable energy grid connections (wind/solar farms).
• Industrial plants with critical power supply requirements.
• Smart grid and microgrid systems.

Advantages Over Competitors

• High Speed: Operating time <15 ms for differential protection.
• Scalability: Modular design for easy expansion.
• Interoperability: Full IEC 61850 compliance simplifies integration.
• Reliability: Dual-power supply options (DC 24-250 V).