关于10kV线路串补装置的若干技术问题探讨  

Discussion on Some Technical Problems of 10 kV Line Series Compensation Device

作　　者：顾卫华 吴金其 吴琦琪 GU Weihua;WU Jinqi;WU Qiqi(State Grid Zhejiang Haiyan Power Supply Co.,Ltd.,Jiaxing 314300,China;Zhejiang Sifang Green System Engineering Co.,Ltd.,Huzhou 313000,China;Shaoxing Dacheng Power Supply Service Co.,Ltd.,Shaoxing 312000,China)

机构地区：[1]国网浙江海盐县供电有限公司,浙江嘉兴314300 [2]浙江四方格林系统工程有限公司,浙江湖州313000 [3]绍兴市大成供电服务有限公司,浙江绍兴312000

出　　处：《电工技术》2020年第7期92-94,共3页Electric Engineering

摘　　要：以串联电容器补偿方式治理10kV长线路末端低电压有着良好前景,但相关技术问题需深入探析。首先依托相量图和数学方法对串补装置安装点和容抗值范围进行分析,明确相关原则;其次从线路功率因数与串联电容器极间电压的关系入手,结合各类电容器的特点,确定配网串补装置的适宜结构和电容器选型;最后对关系串补装置运行安全性的内熔丝动作下限电压进行探讨,明晰在线路功率因数低下时该值的确立途径。It has a good prospect to treat the low voltage at the end of 10 kV long line by series capacitor compensation,but the relevant technical problems need to be further explored.Firstly,based on the phasor diagram and mathematical method,the installation points and capacitive reactance range of the series compensation device are analyzed,and the relevant principles are clarified.Secondly,starting from the relationship between the line power factor and the voltage between the poles of the series capacitor,combined with the characteristics of various capacitors,the appropriate structure and capacitor selection of the series compensation device for distribution network are determined.Finally,the lower limit voltage of the internal fuse action related to the operation safety of the series compensation device is discussed,and the way to establish the value is clear when the power factor of the line is low.

关 键 词：串联电容器补偿 线路末端电压 内熔丝 电容器容抗 

分 类 号：TM86[电气工程—高电压与绝缘技术]