工程实践中合环网络等效负荷的简化分析  

Equivalent Load Simplification of Closed-loop Network in Engineering Practice

作　　者：孙健[1] 彭显刚[2] 袁天清[2] 欧思源 

机构地区：[1]广东电网公司佛山供电局,广东佛山528000 [2]广东工业大学自动化学院,广东广州510006

出　　处：《广东电力》2014年第7期88-91,共4页Guangdong Electric Power

基　　金：广东省自然科学基金项目(10151009001000045);中国南方电网有限责任公司科技项目(K-GD2014-0891)

摘　　要：鉴于传统合环潮流计算方法存在支路多、计算量大的缺点,提出将合环网络中多节点负荷支路简化为单节点负荷支路的思路,并建立等值模型和推导出计算公式。取一条9节点的10 kV配电网线路进行仿真实验,采用单节点模型计算得到的末端电压幅值相对误差为1.7%,相位相对误差为15.5%。仿真结果表明,该方法能满足实际工程的要求,且大大减少了合环潮流计算的工作量。In view of defects such as excessive branches and mass calculated quantities of traditional closed-loop flow calcula-tion method,this paper proposes a thinking of simplifying multiple node load branches in closed-loop network to single node load branch.Meanwhile,it discusses establishment of equivalent model and calculate formula derivation.One 9-node 1 0 kV distribution network line was taken for simulation experiment and single node model was used for calculation.By calculating, relative error of terminal voltage amplitude was worked out as 1.7% while phase relative error was 1 5.5%.The simulation result showed that this method was able to meet requirement for practical engineering and greatly reduce workload of closed-loop flow calculation.

关 键 词：合环网络 潮流计算 负荷节点 单节点 

分 类 号：TM744.2[电气工程—电力系统及自动化]