GE VERNOVA | CENTRALIZED BUS PROTECTION SYSTEM | MULTILIN B90
The Multilin B90 bus protection relay, a member of the UR Family, features integrated protection and breaker failure for re-configurable MV, HV, EHV multi-section busbars with up to 24 feeders. Use one or more B90 relays together to build a flexible protection system that can be engineered to meet specific application requirements. The B90 performs fast and secure low-impedance bus protection with a sub-cycle tripping time of 0.75 cycles and 06 differential zones per phase.
Applications
- Single bus, breaker-and-half busbar configurations, double Bus and triple Bus with and without bus couplers
- Re-configurable multi-section busbar with up to 24 feeders
Key Benefits
- High-speed protection algorithm for enhanced stability with trip times of 0.75 power cycle with CT saturation detector that operates with only 2 msec of saturation-free current
- Superior CT saturation detector that operates with only 2 msec of saturation-free current
- Suitable for different bus configurations, scalable architecture to protect up to 24 feeders
- Advanced IEC61850 Ed. 1 and Ed. 2 certified implementation and complete setting in a single SCL file ensures interoperability, device management optimization and reduced cost of ownership
- Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation
- Advance Cyber security features "CyberSentry" that helps meet modern industry requirements
- Integrated isolator position monitoring, alarming and dynamic bus replica
- Application flexibility with multiple I/O options including high density I/O, programmable logic, modularity, and specific customization
- An integrated large, full color display, provides real-time visualization and control of the protected bay, via a bay mimic as well as annunciator functionality and graphical visualization of phasors
Protection & Control
The B90 bus differential relay provides fast and secure low-impedance bus protection for reconfigurable LV, HV, and EHV busbars. Use one B90 to protect up to 8 feeders and use three or more B90s together in a centralized phase-segregated architecture to protect up to 24 feeders. Many busbar applications such as single, double, triple, breaker-and-a-half, with or without transfer bus, can be protected using the B90. The B90 relay is ideally suited in applications where high-impedance schemes were typically used. Part of the Universal Relay family, the B90 comes with a variety of versatile features, truly integrating protection, monitoring, metering, communication and control in one easy-to-use device. The Universal Relay family offers a high degree of modularity in its design and functionality, providing superior performance in protection and control, while meeting the toughest requirements of the marketplace.
Key Features
- Three independent 100Mbps Ethernet ports enable purpose specific LAN support that eliminates latency effect of heavy traffic protocols on mission critical communication services
- Embedded IEEE 1588 time synch protocol support eliminates dedicated IRIG-B wiring requirements for IEDs
- Direct I/O secures high-speed exchange of binary data between URs
- Increase network availability by reducing failover time to zero through IEC62439-3 "PRP" support
Advanced Communications
The B90 bus protection relay provides for secure remote data and engineering access, making it easy and flexible to use and integrate into new and existing infrastructures. Fiber optic Ethernet provides high-bandwidth communications allowing for low-latency controls and high-speed file transfers of relay fault and event record information. The available three independent and redundant Ethernet options provide the means to create fault tolerant communication architectures in an easy, cost-effective manner.The B90 relay supports the most popular industry standard protocols enabling easy, direct integration into DCS and SCADA systems.
- IEC 61850 Ed. 1/Ed. 2
- DNP 3.0 (serial & TCP/IP)
- IEC 60870-5-103 and IEC 60870-5-104
- Modbus RTU, Modbus TCP/IP
- HTTP, TFTP, SFTP and MMS file transfer
- Redundant SNTP and IEEE 1588 for time synchronization
- PRP as per IEC 62439-3
