基于热备用线路的联合备用电源自动投入方法  

Automatic Switching Method of Combined Standby Power Supply Based on Hot Standby Line

作　　者：马骏毅 赵杰 吴林 刘昶 朱江渝 MA Junyi;ZHAO Jie;WU Lin;LIU Chang;ZHU Jiangyu(Zhenjiang Power Supply Branch,State Grid Jiangsu Electric Power Co.,Ltd.,Zhenjiang 212000,China)

机构地区：[1]国网江苏省电力有限公司镇江供电分公司,江苏镇江212000

出　　处：《电器与能效管理技术》2023年第2期35-38,52,共5页Electrical & Energy Management Technology

基　　金：国网江苏省电力有限公司科技项目(J2016067)。

摘　　要：针对城市电网电缆线路大量使用后造成容性无功过大的问题,提出基于热备用线路的联合备用电源自动投入方法。在电源侧和负荷侧配置备自投装置,通过两者配合动作,既能解决变电站容性无功过高,改善变电站电压水平,提升电网整体运行水平,又能有效避免主供线路永久故障时大面积停电事故的发生,实现电网自愈,提高供电可靠性。Aiming at the problem of large capacity reactive power causeol by the extensive use of cable lines in urban power grid,the automatic switching method of combined standby power supply based on hot standby line is put forward.The automatic switching devices on the power supply side and on the load side are quipped.By combining the two devices,the substation’s capacitive reactive power is solved and the voltage level is improved.The occurrence of large-scale blackouts can be effectively avoided when the main supply line is permanently faulty,the self-healing of power grid can be realized and the power supply reliability can be improved.

关 键 词：城市电缆 容性无功 热备用线路 联合备用电源自动投入 

分 类 号：TM76[电气工程—电力系统及自动化]