Bus protection system of transformer station and protection method thereof

Abstract

The invention discloses a bus protection system of a digital transformer station and a protection method thereof. The system comprises a bus protection main station, a bus protection sub station, an electronic mutual inductor and an intelligent terminal, wherein the bus protection sub station and the bus protection main station are connected through data, the electronic mutual inductor and the bus protection main station are connected through data, the bus protection main station and the intelligent terminal are connected through optical GOOSE network data, the bus protection main station judges whether the bus has troubles inside the sample space or not according to the received digital quantity and opening quantity transmitted by the bus protection sub station or the digital quantity and GOOSE network opening quantity output by the electronic mutual inductor, relevant switches are directly controlled to do tripping operation through conventional tripping operation joints if the troubles inside the sample space occur, or control signals can also be sent to the intelligent terminal, and the intelligent terminal can control the relevant switches to do tripping operation according to the control signals. The invention solves the problem of coexistence of a conventional equipment interface and a digital equipment interface, and realizes the bus protection full process investment in the digital transformation process.

Description

technical field [0001] The invention relates to the field of substations, in particular to a substation busbar protection system and a protection method thereof. Background technique [0002] The digital substation takes the primary and secondary equipment of the substation as the digital object. On the basis of the IEC61850 communication specification, the digital information is uniformly modeled, the physical equipment is virtualized, and the standardized network communication platform is adopted to realize the information between intelligent electrical equipment in the substation. Shared and interactive operation, a modern substation that meets the requirements of safe, stable, reliable and economical operation. [0003] As key technologies such as electronic transformers and GOOSE networks in digital substations become more mature and digital substations continue to be promoted, the digital transformation of traditional substations has become an urgent problem to be solv...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a substation busbar protection system and its protection method, which can solve the problem of coexistence of conventional equipment interfaces and digital equipment interfaces

Images