基于节点相关度可靠解列的网架结构优化研究  

Research on the Structure Optimization of Grid Frame Based on Node Correlation Analysis for Reliable Splitting

作　　者：梁伟强 唐飞[1] 刘福锁[2] 刘涤尘[1] 肖楚飞 刘佳乐 肖固城 LIANG Weiqiang;TANG Fei;LIU Fusuo;LIU Dichen;XIAO Chufei;LIU Jiale;XIAO Gucheng(School of Electrical and Automation,Wuhan University,Wuhan 430072,Hubei Province,China;Nari Group Corporation(State Grid Electric Power Research Institute),Nanjing 211006,Jiangsu Province,China;Power Dispatch and Control Center of Guangdong Power Grid,Guangzhou 510600,Guangdong Province,China)

机构地区：[1]武汉大学电气与自动化学院,湖北省武汉市430072 [2]南瑞集团公司(国网电力科学研究院),江苏省南京市211006 [3]广东电网有限责任公司电力调度控制中心,广东省广州市510600

出　　处：《中国电机工程学报》2020年第3期731-742,共12页Proceedings of the CSEE

基　　金：智能电网保护和运行控制国家重点实验室项目(SGNR0000GZJS1808072)~~

摘　　要：解列作为极端故障下确保重要负荷不间断供电的有效控制措施,对维护系统安全稳定有着重要意义。如何精准快速地找到失步断面并可靠断开,是当前解列问题的研究重点。针对当前解列过程中分群模式不显著,导致解列策略不收敛的难题,提出一种基于节点相关度的网架结构优化方法,通过调整线路支数降低解列难度。该方法基于慢同调理论构造节点相关度模型,综合考虑系统稳定约束条件,采用离散粒子群算法获取同调群强耦合、非同调弱连接的优化方案,使解列范围集中在弱连接区域。最后利用IEEE-118标准算例和新英格兰等值系统进行仿真验证,表明该方法确实能将高概率解列线路集中化,达到缩小解列决策范围的效果。As an effective control measure to maintain the power supply of important loads in power grid under extreme faults,splitting is of great significance for maintaining the security and stability of system.How to find out the out-of-step section accurately and splitting reliably is the focus of current research.Aiming at the problem that the clustering mode is not significant in the current process of splitting,which leads to the non-convergence of splitting strategy,an optimization method of grid structure based on node correlation degree was proposed,which can reduce the difficulty of splitting by adjusting the number of branches.Based on the slow coherence theory,the node correlation model was constructed.Considering the constraints of system stability,the discrete particle swarm optimization algorithm was used to obtain the optimization scheme with coherence group coupling and non-coherence weak connection,and the decoupling range was concentrated in the weak connection area.Finally,the simulation results of the IEEE-118 system and the New England equivalent system show that the method can centralize the high probability splitting lines,reduce the decision scope for splitting.

关 键 词：网架结构优化 节点相关度 解列控制 慢同调理论 离散粒子群算法 

分 类 号：TM712[电气工程—电力系统及自动化]