广州地铁33kV中压电网合环操作分析  

Research on Loop Closing Operation in 33 kV Power Network of Guangzhou Metro

作　　者：王强[1] 夏成军[1] 周卫[1] 崔弘[1] 张尧[1] 

机构地区：[1]华南理工大学电力学院,广州510640

出　　处：《南方电网技术》2009年第5期111-115,共5页Southern Power System Technology

摘　　要：对广州地铁33kV中压环网短时合环操作的可行性进行了分析,并对广州地铁二号线建立了PSCAD/EMTDC电磁暂态仿真模型。仿真结果表明:在110kV进线电压幅值差超过18%,相角差超过14°等情况下进行短时合环操作时,冲击电流和合环稳态电流都可能超过继电保护整定值,使保护动作跳闸。可通过调整变压器分接头,以控制冲击电流和稳态电流大小。The paper mainly analyses the feasibility of short-term loop operation for Guangzhou Metro 33 kV power supply network, while builds up the electromagnetic transient model of Guangzhou Metro line 2. Simulation results show that making the short-term loop operation on many situation such as the 110 kV line of the differences of the amplitude and phase angle more than 18% and 14° , surge current and steady state current maybe exceed the relay protection setting value causing relay action. Adjusting the position of transformer taps can control the size of surge current and steady state current.

关 键 词：短时合环操作 稳态电流 冲击电流 

分 类 号：U231[交通运输工程—道路与铁道工程] TM73[电气工程—电力系统及自动化]