一起10 kV中压发电车并网失败案例分析  

Analysis of Grid Connection Failure of a 10 kV Medium Voltage Generator Car

作　　者：朱方方 黄云龙 宋光明 祁鸣 马建 张作盛 童中宇 ZHU Fangfang;HUANG Yunlong;SONG Guangming;QI Ming;MA Jian;ZHANG Zuosheng;TONG Zhongyu(State Grid Hefei Power Supply Company,Hefei 230022,China)

机构地区：[1]国网合肥供电公司,安徽合肥230022

出　　处：《安徽电气工程职业技术学院学报》2023年第4期39-42,共4页Journal of Anhui Electrical Engineering Professional Technique College

摘　　要：针对一起10 kV中压发电车并网失败案例,通过现场检查控制器数据和保护装置数据,确定了并网点电压滑差较大和接入点保护配置不合理是导致并网失败的主要原因。通过调整中压发电机组额定排线压、更改保护配置,解决了该突发事件。同时根据现场实际应用情况给出了中压发电车接入点电压控制幅度和接入点保护合理配置的计算公式,最后针对本次事故提出了相应工作建议。Through on-site inspection of controller data and protection device data,it is determined that the main cause of the grid connection failure of a 10 kV medium voltage generator car is the large voltage slip at the grid connection point and the unreasonable protection setting at the access point.By adjusting the rated line voltage of the medium voltage generator and changing the protection setting parameters,the emergency is resolved.At the same time,based on the actual application on site,the calculation formula of the voltage control range and reasonable configuration is given.Finally,corresponding suggestions are proposed for this accident.

关 键 词：中压发电车 并网 电压滑差 保护配置 

分 类 号：TM624[电气工程—电力系统及自动化]