Protection System Maintenance and Testing

This project involved secondary injection testing of 185 relays across six substations along with the load testing of the protection system battery banks of the two primary substations as well as the auxiliary power station.  With the combination of electronic and electromechanical relays, we covered a range of protection functions including:

• Overcurrent
• Earth fault
• Reverse power
• Differential protection
• Frequency out of step protection for synchronous motors
• Thermal overload
• Voltage protection

Tasks completed in the works:

This project involved secondary injection testing of 185 relays across six substations along with the load testing of the protection system battery banks of the two primary substations as well as the auxiliary power station.