The key to power systems safety and reliability is properly designed and coordinated Relay Protection settings. Power Grid Engineering’s protective relays services cover a broad range of solutions in creating setting files to protect Transmission, Distribution, and Generation systems up to 500kV. Our Relay Settings engineers are experienced in finding the optimum balance between security and reliability, while also adhering to customer Protection Relay logic requirements and NERC standards.
Developed relay settings for a three terminal 230 kV Ring Bus, 10 terminal 115 kV Double Bus, 22.5 MVAR Capacitor Bank and 230/115 kV
Protective relay setting cross-checking review process including Relay coordination, I/O programming and logic settings. Ensure NERC PRC-023 Loading Criteria is met. Multiple transmission substation projects.
QA Review of proposed Relay Settings, logic diagrams and coordination studies for the addition of 230/115 kV Autotransformer, and complete rebuild and relocation of existing 115/46 kV transmission substation. This included replacement of all protective relay and controls and coordination of the surrounding transmission system.
Developed Relay Settings philosophy to protect feeders at 15, 25 and 35 kV voltage levels including minimizing I2t values. Coordinated feeder breakers with main breakers and power transformer backup overcurrent relays and protected gateway underground cables and overhead main feeder conductors.
Reviewed the Distribution Protection and Control philosophy and Relay Settings.
Short circuit logic model fault study, breaker duty logic study and protection logic recommendations for interconnection of generation.
150MW 138/34 KV Wind Collector Substation.
Protection Application logic, Short circuit model, Overcurrent Coordination Study, Relay Setting Files, SCADA Setting Files and PRC-023-2 report.
30MW 115/27.6 kV Solar Collector Substation.
Protection Application logic, Short Circuit model, Overcurrent Coordination Study and Relay Setting Files.