电流回路隐性缺陷在线检测装置的研制与应用  

Development and application of an online detection device for hidden defects in current circuits

作　　者：王玉财 李志远 李绯 吴一凡 朱炳旭 邵卫星 WANG Yucai;LI Zhiyuan;LI Fei;WU Yifan;ZHU Bingxu;SHAO Weixing(State Grid Ningxia Ningdong Power Supply Compang,Lingwu Ningxia 750411,China;Ningxia Zhongchuang Intelligent Technology Co.,Ltd.,Yinchuan,Ningxia 750011,China)

机构地区：[1]国网宁夏电力有限公司宁东供电公司,宁夏灵武750411 [2]宁夏中创智能科技有限公司,宁夏银川750011

出　　处：《宁夏电力》2023年第5期45-50,共6页Ningxia Electric Power

基　　金：国网宁夏电力宁东供电公司群创项目(5229ND220002)。

摘　　要：为保证电流二次回路隐性缺陷检测的有效性和快速性,本文设计了一种基于负载阻抗测量的二次电流回路隐性缺陷在线检测装置。装置能够在线采集电流二次回路的电压和电流,然后自动计算出电流二次回路的负载阻抗值,当电流二次回路存在虚接、端子排裂痕等隐性缺陷时,回路负载阻抗值异常,装置能够进行自动判断,并显示回路存在隐性缺陷的具体相别。现场应用实践表明,装置可快速判别出电流二次回路的隐性缺陷,为检修人员准确判断故障点提供依据,提高变电站二次设备运行的可靠性和安全性。To ensure timely and effective detection on hidden defects in the secondary current circuit,this paper designs an online device to identify hidden weaknesses in the secondary current circuit based on load impedance measurements.The device captures the voltage and current data from the secondary current circuit,automatically calculating its load impedance value.When the circuit exhibits anomalies such as loose connections or terminal strip fractures,the device will detect an irregular load impedance value.Consequently,it autonomously determines and displays the specific phase with the latent defect.Practical field applications demonstrate the device′s prowess in rapidly pinpointing hidden defects in secondary current circuits.This aids maintenance teams in precisely identifying fault locations,thereby enhancing the reliability and safety of secondary equipment within substations.

关 键 词：电流二次回路 隐性缺陷 在线检测 负载阻抗 

分 类 号：TM715[电气工程—电力系统及自动化]