特大城市两种高压配网典型接线可靠性比较研究  

Comparative research on typical wiring reliability of two high voltage distribution networks in a megacity

作　　者：万国成 邓丰强[2] 张勇军[2] WAN Guocheng;DENG Fengqiang;ZHANG Yongjun(Guangzhou Power Supply Bureau,Guangdong Power Grid Co.,Ltd.,Guangzhou 510600,China;School of Electric Power,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]广东电网广州供电局,广东广州510600 [2]华南理工大学电力学院,广东广州510640

出　　处：《电力系统保护与控制》2021年第6期174-180,共7页Power System Protection and Control

基　　金：广东省自然科学基金项目资助(2017A030313304)。

摘　　要：随着电网规模的扩大,110 kV电网在特大城市内多用作高压配网。因此,对110 kV高压配网两种典型接线双链式接线和“3T”接线的可靠性进行了比较研究。给出了用解析法求解两种典型接线可靠性指标的方法,以及两种不同接线的可靠性指标理论计算值。此外,还对两种不同接线进行了灵敏度分析。结果表明,两种接线方式都能满足电网结构实际运行的需要,但“3T”接线的停电时间短于双链式接线,并且对备自投装置的正确投运率的灵敏度更好。With the expansion of power grid scale,the 110 kV power grid is most used as the high-voltage distribution network in mega cities.The reliability of double chain connection and"3T"connection of two typical connections in a 110 kV high-voltage distribution network is compared.The method of solving the reliability index of two typical but different connections by analytic method and the theoretical calculation value are given.In addition,the sensitivity analysis of two different wirings is also carried out.The results show that the two connection modes can meet the needs of actual operation of a power grid structure,but the outage time of"3T"connection is shorter than that of a double chain connection,and the sensitivity to the correct operational rate of the standby automatic switching device is better.

关 键 词：高压配网 典型接线 可靠性 双链式接线 “3T”接线 

分 类 号：TM732[电气工程—电力系统及自动化]