Description
ABB REG670 (1MRK002826-AG) — Protection Relay
Product: REG670 — Relion® Protection Relay
Manufacturer: ABB
Order Code: 1MRK002826-AG
Primary Application: A numerical protection relay designed for the protection, automation, and control of transmission lines, cables, busbars, and power transformers in high-voltage and extra-high-voltage networks. It serves as a bay controller offering both primary and backup protection.
1. Core Overview & Positioning
The ABB REG670 is a flagship device within the Relion® 670 series, representing ABB’s advanced technology in numerical protection. It is a versatile, multifunctional relay engineered for the highest reliability and complex protection schemes in transmission and sub-transmission grids. The order code suffix -AG typically defines a specific hardware configuration, standard function package, and communication option set.
Key Value Proposition: It consolidates multiple advanced protection functions (like line differential and distance protection) into a single device, reducing panel space while offering superior system integration through robust communication and automation capabilities.
2. Key Protection & Control Functions
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Transmission Line Protection:
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Full-Scheme Distance Protection (ZMF): Multi-zone, directional phase and earth-fault distance protection.
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Line Differential Protection (LDIF/LDPL): High-speed, sensitive unit protection as the primary scheme, using IEC 61850-9-2 LE sampled values or traditional communication channels.
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Ground-Fault Protection (EF/NS).
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Auto-Reclosing (SMBRREC): Supports various reclosing schemes (single-phase, three-phase, integrated).
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Power Transformer Protection:
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Differential Protection (T2WPDIF): Includes harmonic restraint and inrush detection.
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Over-Excitation Protection (V/Hz).
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Backup Protection: Overcurrent, restricted earth fault, overload protection.
REG670 1MRK002826-AA
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General Functions:
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Breaker Failure Protection (CCBRBRF).
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Configurable Logic (CAPL): Powerful graphical logic editor for creating custom control schemes without an external PLC.
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Disturbance Recorder & Event Logging: High-resolution fault recording and time-stamped event logging for analysis.
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Measurement & Metering: Comprehensive measurement of electrical quantities (V, I, P, Q, PF, frequency, energy).
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3. Common Technical Specifications
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Rated Values:
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Current: 1 A or 5 A (configurable).
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Voltage: 100/110 V or 200/220 V (configurable).
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Auxiliary Supply: Wide range of DC or AC supply voltages (e.g., 24-250 V DC/AC).
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Communication Interfaces:
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Station Bus: Multiple Ethernet ports standard, native support for IEC 61850-8-1 (MMS/GOOSE), also supports IEC 60870-5-103/104, DNP3.0, Modbus TCP/IP.
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Process Bus: Optional support for IEC 61850-9-2 LE sampled values for digital substations.
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Peer-to-Peer: Dedicated fiber-optic channels or G.703/IEC 61850-based links for line differential protection.
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I/O Capacity: Extensive configurable binary inputs and output relays.
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Human-Machine Interface (HMI): Large graphical LCD display with navigation keys.
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Certifications: Compliant with IEC 60255 standards, certified by KEMA, etc.
4. System Integration & Engineering
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Engineering Tool: Configured using ABB’s unified PCM600 engineering suite for setting, logic programming, documentation, and testing.
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Substation Integration: Functions as a bay-level unit (BLU) seamlessly integrated into IEC 61850-based digital substation architecture or into existing SCADA/EMS via legacy protocols.
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Cyber Security: Features advanced security functions like role-based access control, audit logs, and IEEE 802.1X port-based network access control.
5. Typical Applications
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Primary and backup protection for HV/EHV overhead transmission lines and cables.
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Protection of power transformers (generator step-up, autotransformers).
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Busbar protection for simple bus configurations.
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Bay control and automation in substations requiring a highly integrated solution.
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