220kV电网结构不合理引发的减负荷问题分析及解决措施  

Analysis of Load Reduction Problem Caused by Unreasonable Structure of 220 kV Network and Its Solving Measures

作　　者：程晓磊[1] 邓昆玲[1] 郭厚静[1] 

机构地区：[1]内蒙古电力科学研究院,内蒙古呼和浩特010020

出　　处：《内蒙古电力技术》2013年第3期12-15,共4页Inner Mongolia Electric Power

摘　　要：分析了220 kV电网因结构不合理可能导致的减负荷问题,针对220 kV母线原因引起的减负荷及220 kV线路原因引起的减负荷2类变电站全站失电情况,给出了新建变电站与系统第3回联络线、将部分负荷转移到其他变电站、改造220 kV母线、将变电站与另1个由500 kV变电站供电的220 kV系统进行强联络等解决措施。对内蒙古某地区实际电网的减负荷隐患点进行了分析,提出了网架的优化措施,并对优化后的电网进行了潮流、暂态稳定及短路计算分析,验证了方案的可行性。Analysis of load reduction problems in the 220 kV grid due to the unreasonable structure was made. According to the 220 kV load reduction situation caused by the bus and the circuit, the paper gave the measures of constructing the third contact line between substation and system, transferring part of the load to the other stations, modifying 220 kV bus, setting strong contact between the 220 kV system of power supply substation and the other 500 kV substation. An actual power grid load reducing hazard points were analyzed, gave the optimization measures of the network, and the optimized network was calculated in analyzed current, transient stability and short circuit, verified the feasibility of the schemes.

关 键 词：220 KV电网 电网结构优化 变电站 减负荷故障 N-1事故 潮流计算 暂态稳定 

分 类 号：TM726[电气工程—电力系统及自动化]