Relay Comparison in Power Systems： A Key Component for Fault Protection and Monitoring

Relay comparison plays an essential role in the protection and fault detection systems of electrical networks, particularly in power transmission and distribution systems. As the backbone of many electrical networks, relay protection systems are designed to detect and isolate faults, ensuring the safe operation of the grid. The concept of relay comparison refers to the process of comparing the states or readings of multiple relays to make decisions regarding fault detection, system monitoring, and protection. This method is particularly critical in protecting high-value electrical equipment like transformers, motors, and transmission lines from damage caused by electrical faults.