基于等效电量函数法的含DG配电网接线方式可靠性分析  

Equivalent Energy Function Based Reliability Consideration of Connection Modes of Distributed Networks Containing Distributed Generations

作　　者：姜淼[1] 高赐威[1] 苏卫华[2] 

机构地区：[1]江苏省智能电网技术与装备重点实验室(东南大学),江苏省南京市210096 [2]上海市电力公司松江供电公司,上海市松江区201600

出　　处：《电网技术》2014年第8期2200-2206,共7页Power System Technology

基　　金：国家863高技术基金项目(2011AA05A115)~~

摘　　要：在传统等效电量函数法的基础上,引入了DG的出力模型与负荷的持续曲线模型,并以此计算出含DG的负荷的失负荷概率与系统失负荷电量期望值。再与常见的配电网网架结构相结合,将分布式电源(distributed generator,DG)等效为具有等效故障率的常规电源,进而计算线路可靠性指标。算例比较了常见接线方式接入DG后的可靠性指标变化,分析了DG容量与模型参数对等效故障率的影响,探讨了接入DG后不同配电网接线方式可靠性的改善情况,分析了通过选择接线方式或配置合理的DG容量满足可靠性要求的可行性。Based on traditional equivalent energy function method, the output model of distributed generations（DG） and the duration curve of load are introduced and used to calculate the loss of load probability（LOLP） and expected energy not supplied（EENS）; then combining with common frame structure of distribution network the DG is equivalent to conventional power sources with equivalent failure rate, and then the reliability indices of distribution lines are further calculated. In calculation case, the variations of reliability indices of common distribution network connection modes after connecting with DG are compared, and the impacts of the capacity of DG and the parameters of the model on equivalent failure rate are analyzed and the improvement of reliability of different distribution connection modes after connecting with DG is discussed. Besides, the feasibility to meet the requirement of reliability by selecting connection modes or by configuring appropriate capacity of DG is analyzed.

关 键 词：等效电量函数法 分布式电源 配电网 接线方式 可靠性 

分 类 号：TM721[电气工程—电力系统及自动化]