10 kV配电网线路合环点电压核相异常分析  

Analysis of Voltage Phase Anomaly at Closing Point of 10 kV Distribution Network Lines

作　　者：关静恩 杨秋昀 徐肖伟 汪家银 和丽云 GUAN Jing′en;YANG Qiuyun;XU Xiaowei;WANG Jiayin;HE Liyun(Yunnan Electric Power Technology Co.,Ltd.,Kunming 650217,China;Yunnan Power Grid Electric Power Research Institute,Kunming 650217,China;Yunnan Power Grid Zhaotong Power Supply Bureau,Zhaotong 657299,China;Yunnan Power Grid Diqing Power Supply Bureau,Shangri-La 674499,China)

机构地区：[1]云南电力技术有限责任公司,云南昆明650217 [2]云南电网电力科学研究院,云南昆明650217 [3]云南电网昭通供电局,云南昭通657299 [4]云南电网迪庆供电局,云南香格里拉674499

出　　处：《电工技术》2024年第11期80-82,共3页Electric Engineering

摘　　要：10 kV配电网线路通过合环转供运行方式可提高供电可靠性,在合环运行前需对合环点两侧线路进行电压核相,只有核相结果电压幅值及相角差满足要求才允许合环。针对某地区配电网10 kV线路核相结果异常进行了分析,提出了基于相量分析的方法,验证了测量结果的正确性,并对核相异常结果提出了整改措施,实现了10 kV线路的合环运行的目标,对配电网线路核相异常解决方法提供了借鉴。10 kV distribution network lines can improve power supply reliability by closed loop operation.Before closing loop,it is necessary to perform phase verification on the line ends at closing point,and only when voltage amplitude and phase angle difference of the phase verification results meet the requirements can the closing loop operation be permitted.A case analysis was conducted in this work on the abnormal results of 10 kV line voltage phase angle difference between two lines in an actual regional distribution network,in which a method based on phasor analysis was proposed,and the correctness of the analysis results was verified.Rectification measures were then proposed for the abnormal results,achieving the goal of closed loop operation of the 10 kV line,and providing useful information for coping with phase anomaly of the distribution network lines.

关 键 词：配电网线路 合环运行 电压核相 

分 类 号：TM77[电气工程—电力系统及自动化]