分布式电源对配电网过电压的影响  

The Impact of Distributed Generators on Distribution Network Over-voltage

作　　者：章杜锡[1] 徐祥海 杨莉[1] 甘德强[1] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027 [2]杭州电力公司,浙江省杭州市310027

出　　处：《电力系统自动化》2007年第12期50-54,85,共6页Automation of Electric Power Systems

基　　金：浙江省自然科学基金青年人才培养项目(R503198);浙江省电力公司(杭州市电力局)科技项目~~

摘　　要：随着分布式电源(DG)的引入,配电网从原来辐射型无源电网变成了有源环网,给系统安全运行带来了新的挑战。文中对配电网引入DG后可能出现的各种过电压问题进行了比较全面的分析与讨论;利用PSCAD软件对某变电所10kV配电网进行了仿真验证,并对各种参数配置下的过电压水平进行比较分析。结果表明,所接入DG的类型与容量、负荷水平及配电网参数对产生配电网过电压有着重大的影响。With the interconnection of distributed generation （DG）, the distribution system has developed from the traditional passive radial-network to active loop-network, bringing new challenges to system operating security. Several over-voltage problems introduced by the interconnection of DG are discussed in detail. A 10 kV Hangzhou distribution system model is developed to test the proposed theoretical analysis. The over-voltage levels under different conditions are analyzed. Simulation results show that the type and capacity of the DG, the load level, and parameters in the distribution system exert considerable impact on the distribution system over-voltage

关 键 词：分布式电源 铁磁谐振 自激谐振 过电压 孤岛网络 

分 类 号：TM862[电气工程—高电压与绝缘技术]