Analysis of hidden faults in power system relay protection

Abstract

In modern power system, relay protection plays a vital role, it is the key link to ensure the safe and stable operation of power
system. However, with the continuous development and complexity of the power sys tem, the relay protection is facing many challenges and
problems. Problems such as misoperation, leakage, unreasonable parameter setting and improper maintenance and operation often occur,
which bring potential risks to the safety and reliability of the power system. Therefore, it is necessary to conduct in-depth analysis and
optimization of power system relay protection to improve its reliability, sensitivity and management level, and ensure the safe and stable
operation of the power system.