大规模电力系统潮流计算收敛性诊断与调整方法  

Convergence identification and adjustment method of power flow calculation for large-scale power system

作　　者：安军[1] 宋俊达 葛维春 AN Jun;SONG Junda;GE Weichun(Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education,Northeast Electric Power University,Jilin 132012,China;State Grid Liaoning Electric Power Supply Co.,Ltd.,Shenyang 110006,China)

机构地区：[1]东北电力大学现代电力系统仿真控制与绿色电能新技术教育部重点实验室,吉林吉林132012 [2]国网辽宁省电力有限公司,辽宁沈阳110006

出　　处：《电力自动化设备》2020年第2期103-108,共6页Electric Power Automation Equipment

基　　金：国家自然科学基金面上项目(51877034);国家电网公司科技项目(LNDL2017-04PT-GC)~~

摘　　要：在对大规模电网进行潮流仿真时,容易出现潮流计算不收敛的情况。针对潮流计算不收敛时难以定位关键影响因素的问题,通过分析迭代中间数据的变化规律,建立判别潮流计算收敛性的指标,提出一种导致潮流计算不收敛关键因素的辨识方法,并基于潮流收敛域,对辨识得到的关键因素进行修正,为运行人员进行潮流调整提供直观的参考依据。通过对某省220 kV及以上电压等级电网和欧洲13659节点系统进行仿真计算,验证了所提方法的有效性。In power flow simulation for large-scale power grid,the calculation is not easy to converge. Aiming at the difficulty of locating the key influence factors when the power flow calculation is not convergent,the indexes to judge the convergence of power flow calculation are established by analyzing the change rule of iterative intermediate data. An identification method of key factors that lead to non-convergence of power flow calculation is proposed,and the identified key factors are modified based on the convergence domain of power flow,which can provide intuitive reference for operators to adjust power flow. The effectiveness of the proposed method is verified by the simulation calculation of a province power grid with 220 kV and above voltage level and a 13659-bus system in Europe.

关 键 词：大规模电力系统 潮流计算 收敛性 迭代中间信息 潮流收敛域 

分 类 号：TM711[电气工程—电力系统及自动化]