倒闸操作二次电压异常风险分析及操作步骤优化  

Risk Analysis of Secondary Voltage Abnormality during Switching Operation and Optimization of Operation Steps

作　　者：孟庆凯 潘雄 潘晓柏 时维经 MENG Qingkai;PAN Xiong;PAN Xiaobo;SHI Weijing(Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd.,Guangzhou 510000,China)

机构地区：[1]广东电网有限责任公司广州供电局,广东广州510000

出　　处：《电工技术》2020年第20期75-78,共4页Electric Engineering

摘　　要：首先对500 kV主变送电操作、母线停电操作、母线及PT送电操作中,因PT二次电压异常对倒闸操作的影响进行了分析,结合相关保护逻辑对以上操作过程中存在的风险进行了探讨,提出了通过优化PT二次空开检查项,有效防止操作异常的风险的方法。明确了操作过程中PT二次空开操作原则,并给出了具体的操作参考步骤,对变电站操作细则的审核修编具有重要技术指导意义,通过优化操作步骤,综合考虑倒闸操作安全、规范、高效的最优性,可有效防止误操作,提升设备操作质量。Firstly,the influence of abnormal PT secondary voltage on switching operation in 500 kV main transformer operation,bus outage operation,bus and Pt power transmission operation was analyzed.Combined with the relevant protection logic,the risks in the above operation process were discussed,and the method to effectively prevent the risk of abnormal operation by optimizing the PT secondary air switch inspection items was proposed.The operation principle of PT secondary air switch in the operation process was clarified,and the specific operation reference steps were given,which had important technical guidance significance for the review and revision of substation operation rules.By optimizing the operation steps,comprehensively considering the optimality of the safety,standardization and efficiency of the switching operation,it could effectively prevent misoperation and improve the quality of equipment operation.

关 键 词：倒闸操作 操作风险 二次电压异常 操作原则 操作优化 

分 类 号：TM63[电气工程—电力系统及自动化]