Relay Setting and Coordination Study

Proper coordination of protective relays is vital to reliable transmission and distribution system service. T&D Engineers brings the critical experience needed for proper backup distance relay coordination for mutual impedance impact due to the double transmission lines; transformer high and low sides overcurrent backup protection for transformer differential relays; and coordination of feeder line protection with downstream reclosers and fuses.

T&D Engineers provides complete solutions for protection coordination study and settings development for transmission lines, transformers, buses, feeder lines, reclosers, Static Var Compensators (SVC), Statcom, Shunt Capacitors and Reactors.

• Perform system protection coordination study at all voltage levels.
• Develop protective relay settings and associated programming.
• Develop logic diagrams based on relay logic settings.
• Maintain the engineering access connection directory.
• Develop DNP point list.
• Cable routing and schedules.
• AC and DC panel diagrams.
• Maintain relay settings database.