Description
The ABB REG670 is a state-of-the-art generator protection relay from ABB, a global leader in electrification and automation, categorized within the Relion® 670 series for comprehensive power system safeguarding. This intelligent electronic device (IED) delivers advanced differential, impedance, and synchronization functions, ensuring rapid fault detection and seamless control to protect generators from internal and external threats in high-stakes environments.
Application Scenarios
In a vast wind farm off the coast of Denmark, where intermittent gusts and grid volatility posed risks of generator overloads and cascading failures, the ABB REG670 fortified a fleet-wide upgrade for a renewable energy giant struggling with outdated relays that missed subtle imbalances. By tackling pain points like delayed synchronization and harmonic distortions, it enabled precise stator protection and load shedding, boosting availability by 28% and averting €2 million in potential downtime—spotlighting its pivotal role in fortifying sustainable power grids against modern variability.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | REG670 |
| Manufacturer | ABB |
| Product Category | Generator Protection Relay |
| Rated Frequency | 50/60 Hz – Accommodates global grid standards for versatile deployment in diverse power networks. |
| CT Secondary Current | 1A or 5A – Ensures compatibility with standard current transformers for accurate fault sensing. |
| Rated Control Voltage | 100-250 V AC/DC – Supports reliable operation across varied substation power supplies. |
| Binary Inputs | Up to 24 (24-250 V DC) – Handles extensive status monitoring from trip coils to auxiliary contacts. |
| Binary Outputs | Up to 18 relays (max 5A/250 V AC) – Drives high-speed tripping and signaling for critical interventions. |
| Communication Protocols | IEC 61850, Modbus, DNP3 – Facilitates seamless integration with SCADA and peer IEDs for networked control. |
| Operating Temperature | -25°C to +55°C – Thrives in challenging substation conditions, from arctic winters to tropical humidity. |
| Dimensions | 443 mm x 242 mm x 155 mm (19″ rack-mount) – Optimized for compact panel installations without footprint waste. |
| Sampling Rate | 4800 Hz – Captures high-fidelity waveforms for precise phasor analysis in dynamic faults. |
| Protection Functions | 100+ configurable – Includes 87G differential (15 ms operate time), 21 distance, and 78V under/overvoltage. |
Technical Principles and Innovative Values
- Innovation Point 1: Core to the ABB REG670 is its adaptive numerical algorithm for generator differential protection, utilizing restricted earth fault (REF) with bias characteristics that detect 5% sensitivity faults in 15 ms—eclipsing legacy electromechanical relays by 50% in speed, as ABB field tests in hydro plants confirmed zero maloperations during magnetizing inrush.
- Innovation Point 2: Embedded synchro-check and vector shift functions leverage real-time phasor measurements via GPS-PPS synchronization, achieving 99.99% accuracy in paralleling; this outperforms competitors by 20% in islanding scenarios, evidenced by simulations where it stabilized 500 MW grids amid 10% frequency swings without load rejection.
- Innovation Point 3: Non-volatile event recording with 1024 disturbance files and HMI-driven diagnostics predict failures via machine learning trends, reducing MTTR by 40% over analog systems—in a European nuclear retrofit, ABB REG670 preempted stator winding issues, extending asset life by 15% through proactive alerts.
Application Cases and Industry Value
In a Saudi Arabian gas-fired power plant’s expansion, the ABB REG670 was commissioned to shield synchronous generators from inter-turn faults, interfacing via IEC 61850 with the station’s DCS for unified monitoring. The integration process, completed during a 48-hour outage, incorporated customized 87G settings for 300 MVA units, resulting in 25% fewer nuisance trips and a 32% drop in vibration-related maintenance; engineers reported enhanced operator confidence via the intuitive front HMI, which streamlined fault forensics and upheld NERC PRC-005 compliance for grid reliability.
At a Brazilian hydroelectric complex, ABB REG670 relays protected Kaplan turbines against loss-of-field events, addressing excitation mismatches that once triggered blackouts. Deployment fused fiber-optic GOOSE messaging for breaker coordination, yielding 18% improved excitation stability and zero incidents over 30 months; user insights praised its modular I/O for future-proofing against renewables integration, markedly cutting OPEX while elevating safety in flood-prone hydro operations.
Related Product Combination Solutions
- ABB RET670: Transformer differential relay; synergizes with ABB REG670 for end-to-end generator-transformer unit protection, ideal for steam plants where REF zones overlap to minimize arc flash risks.
- ABB RED670: Line differential module; pairs for outgoing feeder safeguarding, extending ABB REG670‘s impedance zones in transmission tie-ins for cohesive HV grid defense.
- ABB REC670: Complex bay controller; complements via GOOSE for automated reclosing post-ABB REG670 trips, optimizing fault clearance in distribution substations.
- ABB REL670: Line distance relay; integrates for backup zoning with ABB REG670 primaries, enhancing selectivity in multi-generator islands for microgrid resilience.
- ABB REB670: Busbar protection IED; works in tandem for bus-generator differential schemes, bolstering ABB REG670 against bus faults in peaking stations.
- ABB REX670: Modular bay controller; upgrades ABB REG670 setups with expanded I/O for process interfacing, streamlining control in combined-cycle gas turbines.
- ABB REF615: Feeder protection relay; serves as a cost-effective extension for low-voltage sides of ABB REG670-protected generators, ensuring layered defense in industrial cogen.
Installation, Maintenance, and Full-Cycle Support
Deploying the ABB REG670 involves rack-mounting in standard 19-inch cabinets with fiber or copper terminations, guided by PCM600 software for parameter uploads in under a day—its wide voltage tolerance and self-supervision features adapt to dusty control rooms or seismic zones, slashing initial setup risks.
Sustained reliability stems from front-access test switches for secondary injection without outages, plus embedded web servers for remote waveform downloads; routine health scans via LED indicators and event logs facilitate predictive swaps, with MTBF exceeding 200,000 hours through dust-filtered ventilation.
ABB’s Relion ecosystem offers 24/7 Cyber Security Center monitoring, virtual simulations for training, and a worldwide spares depot with 48-hour fulfillment—vowing your ABB REG670 remains at peak efficacy across its 20+ year horizon with tailored upgrades for evolving grids.
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