Description

The GE URRHH represents a cutting-edge redundant high-availability protection system within GE’s Multilin Universal Relay series, engineered for mission-critical infrastructure where zero protection downtime is non-negotiable. This advanced platform integrates triple modular redundant (TMR) architecture with cross-channel validation to deliver 99.9999% system availability – making it indispensable for nuclear safety systems, hyperscale data centers, and national grid control centers. The GE URRHH features autonomous fault detection and seamless failover capabilities, maintaining continuous protection even during multiple concurrent failures. Its patented “Protection Continuum” technology enables hot-swapping of all components – including processors, power supplies, and communication modules – without interrupting protective functions.

Designed to exceed IEC 62340 nuclear safety standards, the GE URRHH incorporates radiation-hardened FPGAs and military-grade components rated for 40-year service life. The system supports synchronous operation across geographically dispersed sites with ±100ns time synchronization via optical-fiber PTP, enabling wide-area differential protection schemes. With its integrated cyber-physical threat detection system, the GE URRHH autonomously isolates compromised channels while maintaining protection integrity through hardware-enforced security domains.

GE URRHH

Technical Specifications

Main Features and Advantages

Continuous Protection Architecture: Self-healing TMR design with hardware-based voting logic automatically isolates faulty processors while maintaining 2-of-3 consensus. Live firmware updates with cryptographic rollback protection eliminate planned downtime.

Cyber-Physical Threat Mitigation: Hardware root-of-trust modules validate every executable cycle. Electromagnetic side-channel shielding prevents timing attacks. Tamper-responsive zeroization erases keys within 50ms of enclosure breach detection.

Deterministic Performance: Nanosecond-accurate event time-stamping (IEEE 1588v2.1) enables fault location within ±10 meters on 400kV lines. Hardware-accelerated algorithms execute 87L differential protection in<1>

Predictive Resilience: Embedded AI analyzes component degradation patterns using 200+ health parameters. Proactively schedules maintenance before redundancy reduction occurs.

Application Field

The GE URRHH secures the world’s most critical infrastructures:

Nuclear Generation: Safety-related reactor protection systems (RPS) and engineered safety features (ESF) where single failures are unacceptable

National Grid Control: Black-start coordination and wide-area special protection schemes requiring 24/7/365 availability

Hyperscale Data Centers: Protection for 500kV direct-to-chip power distribution with zero downtime SLAs

High-Speed Rail: Traction power protection where 25kV catenary faults require sub-cycle clearance

Offshore Wind: Multi-terminal HVDC collector platforms exposed to extreme environments

Military Power: Strategic defense systems requiring EMP/IEMI hardening to 200V/m

GE URRHH

Related Products

GE UR9EH: Extreme environment relay (-55°C to +100°C)

GE UR8RH: Dual-channel redundant protection system

GE D90 RHH: Redundant line differential system

GE T60 RHR: Nuclear-qualified transformer protection

GE C90 RHS: Distance protection with hardware redundancy

GE SPR-5000: Safety processor for IEC 62340 applications

GE F650 FR: Fault recorder with redundant storage

GE HPCI: High-pressure core injection protection

Installation and Maintenance

Pre-installation preparation: Perform site resilience assessment documenting seismic, EMI, and security threats. Install fiber-optic time distribution network with ≤0.5dB loss margin. Validate security boundary protections before energizing control circuits. Initialize hardware security modules in electromagnetic shielded enclosure.

Maintenance recommendations: Quarterly cross-channel validation tests using GE’s RHH Toolkit. Monitor predictive failure analytics daily through Grid Solutions Portal. Replace voting logic FPGAs at 15-year intervals. Conduct full security penetration testing biannually. Maintain air-gapped firmware repository with cryptographic verification.