母线电压互感器停运状态的自动识别研究.pdfVIP

第38 卷 第15 期 电力系统保护与控制 Vol.38 No.15 2010 年8 月1 日 Power System Protection and Control Aug. 1, 2010 母线电压互感器停运状态的自动识别研究 葛遗莉 （广东省电力设计研究院，广东 广州 510600） 摘要：针对在母线未投运、母线检修、母线电压互感器（PT ）检修时保护装置因采不到电压数据而造成复合电压动作、PT 断线动作的问题，提出几种自动识别母线电压互感器停运状态的几种方案，包括基于电压检修压板的简易识别方案、基于开 关量电气量特征母线停运状态识别方案、基于记忆量特征的 PT 检修识别方案。其中，基于电压检修压板的识别方案简单且 实用，但检修时对于保护的运行有一定要求；基于开关量、电气量特征的方案逻辑设计较为严谨，对开关位置的依赖性较高； 基于模拟量的记忆特征的方案完全自适应于系统状态，对操作人员也无特殊要求，便于推广运行；指出了各种方案应用的场 合及解决的问题。 关键词: 电压互感器；停运；检修；识别 Study of bus potential transformer idle identification GE Yi-li ( Guangdong Electric Power Design Institute, Guangzhou 510600, China ) Abstract: The paper gives several schemes aiming at composite voltage operating and potential transformer open circuit because of unbelievable voltage acquisition when bus idle, bus maintenance or bus potential transformer maintenance, which contains simple identification based on voltage maintenance platen, bus idle based on electric binary and analogy level, and potential transformer maintenance based on memory character of analogy data. For voltage maintenance platen ，it is very simple but it needs special treatment when bus maintenance. For bus idle based on electric binary and analogy level ，the logic is rather rigorous, but it is stictly limited by binary. For potential transformer maintenance based on memory character of analogy data, it can adapt system state flexibly and without surplus treatments, therefore it is easy to popularize. Finally, it points out each scheme’s occasions and applications. Key words: potential transformer ；idle；maintenance ；identification 中图分类号： TM77