核电厂发电机变压器组继电保护装置的应用

Application and Technical Innovation of Domestic Relay Protection Device for Nuclear Power Plant Transformer

田湾核电站俄供发电机变压器组(简称发变组)继电保护装置在运行过程中多次发生误动,为了提高发变组继电保护装置的可靠性,电站对俄供装置进行了改造,将国产发变组继电保护装置首次应用于百万千瓦级核电机组。文章还总结了田湾核电站国产发变组继电保护装置的技术特点、研发创新及运行情况,为后续扩建工程或同类大型核电机组改造提供借鉴经验。

Relay pint.don device of nuclear power plant transformer provided by Russia to Tianwan Nuclear Power Plant had mal-operated in service. In order to raise its operational reliability, Tianwan NPP modified the Russian device, and put domestic device into practice. The paper sums up the technology feature, R＆D innovation and the operational condition of domestic relay protection device. Some feedback and experience can be leamed for the follow-up expansion project or similar units.