Relay Protection Orientation and CT/PT Polarity Static Energization Test Approach

The CT/PT polarity and relay protection orientation are usually tested through the dynamic tests as no-load/under load unit tests.This paper proposes that the static energization before plant energization and unit start-up will avoid the potential breakdown of the on-going test,malfunction protection or equipment damage,and will reduce the workload and the test difficulty to ensure safety risks of dynamic tests are under control.