Where is The Diesel Generator Set Relay?

Relay protection is widely used in the diesel generator set industry, especially in the joint venture and imported diesel generator set brands such as Dongkang diesel generator set and Chongkang diesel generator set. Due to the increasing capacity and scope of Cummins power system, only setting relay protection devices for each component of the system is far from preventing the serious accident of long-term and large-scale blackout of the whole power system. Therefore, it is necessary to start from the overall situation of the power system to study the working conditions of the system after the fault components are removed by the action of the corresponding relay protection devices, the characteristics of the system when it loses stability, and how to restore its normal operation as soon as possible.

The relay protection system is one of the most important equipment in the power system or electrical equipment (diesel generator set, Cummins generator set), which plays a preventive role in the good operation of electrical equipment and can improve the safety factor of electrical equipment. The task of system protection is to limit the scope of influence to the minimum and reduce the load outage time to the minimum when the normal operation of the large power system is damaged. In addition, the failure of any part of the engine, furnace and electricity will affect the safe production of electric energy, especially the interaction and coordination between large diesel generator sets and large power system is becoming a major topic of safe production of electric energy. Therefore, the configuration scheme of relay protection and automatic safety device of the system shall consider the bearing capacity of the generator, boiler and other equipment, and the design and manufacture of the generator and boiler equipment shall also fully consider the actual needs of safe and economic operation of the power system. For the safety of giant generator sets, not only should there be perfect relay protection, but also the fault prediction technology should be studied and popularized. Relay protection is developed with the development of power system.

At the beginning of the 20th century, with the development of power system, relays began to be widely used in power system protection, which was the beginning of the development of relay protection technology. The earliest relay protection device was fuse. From 1950s to the end of 1990s, relay protection has completed four stages of development in more than 40 years, namely, from electromagnetic protection device to transistor relay protection device, to integrated circuit relay protection device, and then to microcomputer relay protection device.

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