摘要
在电力系统厂网分家的新形势下,发变组保护与输电网保护的分界面配合方面的问题引起了各方更大的关注。特别是机组异常运行工况保护的功能作用与电气主保护有不同的要求,前者既要兼顾机组的运行能力,同时还需要躲过电网电气故障和故障切除的暂态过程,保证机组对电网稳定的支撑作用,绝对不能一味简单地快速跳闸。文章分析了几种典型的后备保护和异常工况保护在技术方案选择和整定运行方面必须考虑的几个侧重点,利于并网电厂理解电网保护策略设计原则,做好机组与电网保护的配合工作。
Under the new policy that power plants had been separated from the Power Grid, multiple parties have paid much more attention on relay-coordination problems and solutions between generator-transformer unit and power transmission network interface Especially under the abnormal operational situation of generator unit, functionalities of the protection have difference from the main protection, the former shall consider both generator unit＇s operational capabilities and mean time to avoid tripping during the temporary procedure when electric faults happen and faults are removed. The relay protection of generator units shall be set to provide stable support to operations of electric transmission network, fast tripping will not be simply adopted. This paper analyzes several typical protections and focuses on protection selections for abnormal operations. The proposed designing principle for protections of electric transmission network is easily to be understood by power generation company in implementing the cooperation jobs between both sides.
出处
《继电器》
CSCD
北大核心
2007年第3期73-76,共4页
Relay
关键词
发变组
系统
继电保护
整定
配合
generator-transformer unit
power grid system
relay protection
settings
coordination
作者简介
聂宇本（1969-），女，长期从事电力系统专业工作；E-mail：nie-yb@ec．sp．com．cn
唐渝南（1969-），女，高级工程师，长期从事继电保护专业工作。
