远方备自投技术在链式串供电网中的应用  

Application of Remote Automatic Switching Technology in Serial Power Grid

作　　者：胡悦 王从威 王世祥 乔中伟 HU Yue;WANG Congwei;WANG Shixiang;QIAO Zhongwei(Shenzhen Power Supply Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]深圳供电局有限公司,广东深圳518000

出　　处：《电工技术》2022年第24期127-129,共3页Electric Engineering

摘　　要：电网中110 kV负荷变电站多采用链式串供网架结构且开环运行,当开环点上级进线故障导致多个串供变电站失压时,常规就地备自投仅能恢复开环点变电站电压,而上级串供变电站将失压,造成负荷损失。针对常规备自投的局限性,提出在多级串供电网中加装远方备自投装置。通过对比不同运行方式下常规备自投与远方备自投的动作效用,以实际案例介绍远方备自投技术在链式串供电网中的应用,证明加装远方备自投能提高链式串供电网的供电可靠性。Since the 110 kV substations in power grid mostly adopt the chain serial power grid structure and are operated in open loop,when the fault of upper-level feed line at the open-loop point leads to loss of voltage in several series supply substation,local automatic bus transfer equipment(ABTE)can only restore the voltage of open-loop point substation,while upper-level feed substations will lose voltage,resulting in load loss.For the limitation of ABTE,installing remote automatic bus transfer equipment(RABTE)in serial power grid is proposed.This article compares the utility between ABTE and RABTE under different operation modes,uses a practical case to introduce the application of RABTE in chain serial power grid,and proves that installing RABTE can improve the reliability of power supply in chain serial power grid.

关 键 词：链式串供电网 远方备自投 供电可靠性 继电保护 

分 类 号：TM762[电气工程—电力系统及自动化]