基于实际应用的大型水电站发变组保护动作结果选择

Selection of Protection Action Results of Generator Transformer Unit in Large Hydropower Station Based on Practical Application

大型水电站的发变组保护多达几十种,国家行业相关规程规范对这几十种保护的动作结果做了相应规定。在统计某流域公司已投运水电站发变组保护动作结果后发现,相同保护的动作结果设置存在一些差异。参考国家行业相关规程规范,并结合国家电网公司相关规定及实际应用经验,提出了发变组保护的动作结果建议。这些建议可规范已投运水电站发变组保护的动作结果设置,还可为后续投运水电站发变组保护的动作结果设置提供指导。

There are dozens of generator transformer unit protections in large hydropower stations,and the action results of these dozens of protections are specified in relevant national industrial regulations and specifications.After counting the protection action results of the generator transformer unit of a hydropower station put into operation by a river basin company,it is found that there are some differences in the action result settings of the same protection.Referring to relevant national industrial regulations and specifications,combined with relevant regulations and practical application experience of State Grid Corporation of China,the action results and suggestions of generator transformer unit protection are put forward.These suggestions can not only standardize the action result setting of generator transformer unit protection of hydropower stations that have been put into operation,but also provide guidance for the action result setting of generator transformer unit protection of hydropower stations that have been put into operation in the future.