Abstract:

Abstract:There were problems in traditional auxiliary bus protection of power plant. Aiming at these problems, it was proposed that to adopt passive wireless temperature measuring technology to realize fast auxiliary bus protection. Under the framework of traditional relay protection, the nonelectrical signals protection is used to eliminate the protection dead zone of electrical signals protection for faults of 6kV auxiliary bus and to quikly switch the fault of 6kV auxiliary bus. Then the primary equipments, such as the high voltage auxiliary transformer and the startup and standby transformer, can be protected.

Key words: Keywords:auxiliary bus, passive wireless temperature measuring technology, temperature collector, fast protection