抽水蓄能电站机组保护闭锁方案分析

Analysis on Units Protection Locking Scheme of Pumped Storage Power Station

抽水蓄能电站机组保护闭锁方案与复杂的工况及工况转换过程、主接线形式、保护装置的特性等因素有着密切的关系,相对于常规电站的保护闭锁,具有较大的复杂性。以具体抽水蓄能电站为例,对具体闭锁方案的原则和实现方式进行详细的介绍和比较,文章分析了当前几种主要闭锁方式的优缺点,提出了未来抽水蓄能电站保护闭锁方案选择的趋势,以供同类型电站保护设计人员参考。

Protection locking scheme of the pumped storage units is related to the factors such as complex working conditions and conditions transformation、the main electrical wiring、the characteristics of the protection device、interconnection state of units,etc. relative to the conventional power station,the protection locking scheme of pumped storage power station is more complex. With specific pumped storage power station as an example,the principle and implementation way of several main protection locking schemes are introduced and comparied detailly. In order to provide the reference for the same type power station protection design,the advantages and disadvantages of several main protection blocking schemes are analyzed,the future trend of protection blocking scheme of the pumped storage power station units are put forward.