带云广直流的云南电网运行风险及其对策分析  

Analysis on the Operation Risk and Its Regulation Measures of Yunnan Power System Connected with Yunnan-Guangdong±800 kV DC Transmission Line

作　　者：朱涛 杨强 蔡葆锐 洪贵平 吴琛 李玲芳 

机构地区：[1]云南电力调度控制中心,昆明650011

出　　处：《南方电网技术》2011年第5期33-36,共4页Southern Power System Technology

摘　　要：云广±800 kV直流线路与云南电网联网运行模式下,直流单极或双极闭锁会引起交流系统线路越极限运行、系统暂态失稳等问题。分析了直流故障引起云南电网的运行风险,对比直流闭锁前后相关断面潮流情况,根据云广直流闭锁后云南电网相关送电断面调整量的计算结果,提出了云广直流闭锁后云南电网的调控对策及机组调控顺序,为调度运行人员日后处理事故提供了技术支持。DC unipolar blocking or bipolar blocking will cause AC lines exceeding operation limit and system transient instability under the condition of Yunnan power system connected with Yunnan ？？Guangdong ±800 kV DC transmission line.The paper analysed operation risk and load flow change in Yunnan power system when Yunnan ？？Guangdong ±800 kV DC transmission line fault.According to adjustment quantity of related lines if Yunnan-Guangdong ±800 kV DC transmission line fault,the paper proposed regulation measure and the control order of units,which provides technical support for dispatching operators to handle the accidents.

关 键 词：云广±800kV直流系统 风险 调控 云南电网 

分 类 号：TM721.1[电气工程—电力系统及自动化]