This project includes power supply design of secondary equipment, settings calculation and after-sales services. The scope of supply is including 220kV SCADA system, 220kV line protective relays, 220kV transformer protective relays, 120kV substation expansion protection relays, monitoring and measurement system, power supply devices (AC and DC systems), monitoring system for 220kV step-down transform, four substation monitoring system, integrated protection solution of the four substations, gateway and communication devices.