What is the job of relay protection?

This paper studies the faults and abnormal working conditions that endanger the safe operation in power system, so as to explore its countermeasures and anti-accident automation measures. During its development, it is mainly used to protect the power system and its components (generators, transformers, transmission lines, etc.). ) from damage, so it is also called relay protection.

The basic task is to automatically cut off the faulty equipment from the power system in the shortest possible time and in the smallest possible area, or send a signal to the personnel on duty to eliminate the root causes of abnormal working conditions, so as to reduce or avoid the damage of equipment and the impact on the power supply in neighboring areas.

Extended data:

In order to strengthen the safety production and emergency treatment of power grid before agricultural production, improve the safety guarantee ability of relay protection to power grid and prevent large-scale power outage accidents, State Grid jimo city Power Supply Company carried out a special inspection of relay protection before agricultural production in Jimo Power Grid.

It is understood that jimo city is a key agricultural product producing area in Qingdao. Every spring, during the busy farming season, it is the peak of electricity consumption in this area, and the electricity load exceeds the Spring Festival. Therefore, protecting electricity and relaying for agriculture is one of the key tasks of the company in spring.

Before the coming of farming season, State Grid jimo city Power Supply Company checked the protection setting values of all substations to ensure that the setting values of devices correspond to the setting values, and checked the terminal and relay contacts to see whether the connecting contacts are safe and reliable.

Ensure the normal operation of the protection device, make patrol records at the same time, and sort out and correct the secondary equipment ledger and setting list of the substation.

It is reported that this relay protection patrol inspection has inspected the secondary equipment of the substation, ensured the normal operation and correct action of the power grid equipment, and laid a solid foundation for the normal operation of the power grid and agricultural electricity consumption.

People's Network-Successfully completed the special inspection of relay protection devices.