弱电磁配网合环潮流实时自动计算方法研究  

Research on real-time automatic calculation method of closed loop power flow in weak electromagnetic distribution network

作　　者：徐大勇 卢东旭 郭佳才 陈伟德 史立勤 刘海琼 XU Dayong;LU Dongxiu;GUO Jacai;CHEN Weide;SHI Liqing;LIU Haiqiong(Huizhou Power Supply Company,Guangdong Huizhou 516003,China;Hangzhou WR Power Science&Technology Co.,Ltd.,Hangzhou 310012,China)

机构地区：[1]广东电网有限责任公司惠州供电局,广东惠州516003 [2]杭州沃瑞电力科技有限公司,杭州310012

出　　处：《自动化与仪器仪表》2020年第5期185-188,共4页Automation & Instrumentation

基　　金：广东电网有限责任公司科技项目(No.031300KK52160028)。

摘　　要：针对传统弱电磁配网合环潮流自动计算方法存在计算误差较高的问题,提出基于等效电压源定律的弱电磁配网合环潮流实时自动计算方法。通过等效电压源定律和合环前后最佳频率潮流,计算等值阻抗值,分析弱电磁配网合环后暂态过程,计算合环操作半个周期左右产生的弱电磁配网合环最大冲击电流值,根据等值阻抗值和最大冲击电流值,通过前推回代潮流算法计算弱电磁配网合环潮流;采用自律分散思想设计合环潮流自动计算分析工具,在合环潮流计算分析工具中,依据计算结果分析弱电磁配网合环的可行性。测试结果显示:该方法可以有效判断弱电磁配网越限情况,计算合环潮流误差低。In order to solve the problem that the traditional automatic calculation method of weak electromagnetic distribution network closing loop power flow has high calculation error,a real-time automatic calculation method of weak electromagnetic distribution network closing loop power flow based on the law of equivalent voltage source is proposed.Through the law of equivalent voltage source and the optimal frequency power flow before and after closing the loop,the equivalent impedance value is calculated,the transient process after the closure of the weak electromagnetic distribution network is analyzed,and the maximum impulse current value of the weak electromagnetic distribution network produced by the closed loop operation about half a period is calculated.According to the equivalent impedance value and the maximum impulse current value,the weak electromagnetic distribution network closing loop power flow is calculated by the forward push back power flow algorithm.The automatic calculation and analysis tool of closed loop power flow is designed by using the idea of self-discipline and dispersion.In the power flow calculation and analysis tool,the feasibility of closing the loop of weak electromagnetic distribution network is analyzed according to the calculation results.The test results show that this method can effectively judge the crossing limit of weak electromagnetic distribution network and the error of calculating closed loop power flow is low.

关 键 词：弱电磁 配电网 等效电压源定律 等值阻抗 自动计算 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]