Abstract To avoid removing the overload lines caused by power flow transferring,a zone-divided emergency control strategy for overload lines based on power sensitivity is put forward.Based on the current correlation coefficient matrix,the power sensitivity matrix between line power variables and nodal injection power variables is derived.The balance machine is introduced to the emergency control.Then the complex phasor calculation is simplified to real number calculation.The power system is divided into generalized power flow transferring zones according to the network topology.The nodes outside of the zone and the zone connecting cut point are proved to be with very closed power sensitivity for lines inside the zone.So the computational area can be simplified to the generalized power flow transferring zone to which the overload lines belong.With the combination of the local sensitivity calculation and the sparse vector techniques,the amount of calculation and memory are greatly reduced.The control node group is obtained by comprehensive sensitivity.Considering the redundant power of normal lines,the reverse equal amount adjustment method is used to determine the adjustment power amount,which avoids the tidal flow check and improves the emergency control speed.The validity and the superiority of the method are verified with IEEE39 and IEEE118 bus systems.
Xu Yan,Zhi Jing. A Zone-divided Emergency Control Strategy for Overload Lines Based on Power Sensitivity[J]. Transactions of China Electrotechnical Society, 2015, 30(15): 60-72.
[1] 杨文辉,毕天姝,马强,等.基于广域电压相角信息的输电断面快速识别方法[J].电力系统保护与控制,2013,41(24):58-63. Yang Wenhui,Bi Tianshu,Ma Qiang,et al.A method for searching transmission section based on wide-area voltage phasors[J].Power System Protection and Control,2013,41(24):58-63. [2] 王增平,李刚,任建文.基于前K最短路径的输电断面搜索新算法[J].电工技术学报,2012,27(4):193-201. Wang Zengping,Li Gang,Ren Jianwen.A new search algorithm for transmission section based on K shortest paths[J].Transactions of China Electrotechnical Society,2012,27(4):193-201. [3] 徐慧明,毕天妹,黄少锋,等.基于广域同步测量系统的预防连锁跳闸控制策略[J].中国电机工程学报,2007,27(19):32-38. Xu Huiming,Bi Tianshu,Huang Shaofeng,et al.Study on wide area measurement system based control strategy to prevent cascading trips[J].Proceedings of the CSEE,2007,27(19):32-38. [4] 程临燕,张保会,郝治国,等.基于综合灵敏度分析的快速控制算法研究[J].电力自动化设备,2009,29(4):46-49. Cheng Linyan,Zhang Baohui,Hao Zhiguo,et al.Fast control algorithm based on integrative sensitivity analysis[J].Electric Power Automation Equipment,2009,29(4):46-49. [5] 邓佑满,黎辉,张伯明,等.电力系统有功安全校正策略的反向等量配对调整法[J].电力系统自动化,1999,23(18):5-8. Deng Youman,Li Hui,Zhang Boming,et al.Adjustment of equal and opposite quantities in pairs for strategy of active power security correction of power systems[J].Automation of Electric Power Systems,1999,23(18):5-8. [6] 李刚,王增平,任建文,等.基于图论分区与改进 BFS算法搜索安全约束集的防联锁过载控制策略[J].电工技术学报,2012,27(11):219-229. Li Gang,Wang Zengping,Ren Jianwen,et al.A control strategy to prevent cascading overload with security constraint set searched by graph theory partition and improved BFS algorithm[J].Transactions of China Electrotechnical Society,2012,27(11):219-229. [7] 姚峰,张保会,周德才,等.输电断面有功安全性保护及其快速算法[J].中国电机工程学报,2006,26(13):31-36. Yao Feng,Zhang Baohui,Zhou Decai,et al.Active power security protection of transmission section and its fast algorithm[J].Proceedings of the CSEE,2006,26(13):31-36. [8] 姜臻,苗世洪,刘沛,等.一种基于粒子群优化算法的转移潮流控制策略[J].电力系统自动化,2010,34(18):16-20,31. Jiang Zhen,Miao Shihong,Liu Pei,et al.A particle swarm optimization based power flow transferring control strategy[J].Automation of Electric Power Systems,2010,34(18):16-20,31. [9] 袁晓丹,张会强.多支路开断潮流转移识别及防连锁过载策略研究[J].现代电力,2014,31(5):74-79. Yuan Xiaodan,Zhang Huiqiang.Study on power flow transferring identification of multi-line tripping and the strategy to prevent cascading overload strategy[J].Modern Electric Power,2014,31(5):74-79. [10]吴际舜.电力系统静态安全分析[M].上海:上海交通大学出版社,1985. [11]沈瑜,夏清,康重庆.发电联合转移分布因子及快速静态安全校核算法[J].电力系统自动化,2003,27(18):13-17. Shen Yu,Xia Qing,Kang Chongqing.Generation jointly shift distribution factor (GJSDF) and fast security analysis algorithm in economic dispatch[J].Automation of Electric Power Systems,2003,27(18):13-17. [12]任建文,李莎,严敏敏,等.基于潮流跟踪算法的线路过负荷紧急控制策略[J].电网技术,2013,37(2):392-397. Ren Jianwen,Li Sha,Yan Minmin,et al.Emergency control strategy for line overload based on power flow tracing algorithm[J].Power System Technology,2013,37(2):392-397. [13]陈珩.电力系统稳态分析[M].北京:中国电力出版社,2007. [14]沈瑞寒,刘涤尘,赵洁,等.基于加权网络模型的电网潮流转移下危险线路识别[J].电网技术,2012,36(5):245-250. Shen Ruihan,Liu Dichen,Zhao Jie,et al.Weighted network model based recognition of dangerous lines under power flow transferring[J].Power System Technology,2012,36(5):245-250. [15]苗世洪,马帅,尚亚男,等.基于割点和路径搜索的输电断面快速识别方法[J].电力系统自动化,2014,38(2):39-45. Miao Shihong,Ma Shuai,Shang Yanan,et al.A fast recognition method of transmission section based on cut-vertex and path search[J].Automation of Electric Power Systems,2014,38(2):39-45. [16]杨文辉,毕天姝,薛安成,等.基于图论的潮流转移路径的快速搜索[J].电网技术,2012,36(4):84-88. Yang Wenhui,Bi Tianshu,Xue Ancheng,et al.An approach for quickly searching power transferring paths based on graph theory[J].Power System Technology,2012,36(4):84-88. [17]郭志忠.电力网络解析论[M].北京:科学出版社,2008. [18]杨文辉.预防连锁跳闸的关键线路后备保护与紧急控制策略研究[D].北京:华北电力大学,2012. [19]程临燕,郝治国,张保会,等.基于内点法消除输电断面过载的实时控制算法[J].电力系统自动化,2011,35(17):51-55. Cheng Linyan,Hao Zhiguo,Zhang Baohui,et al.Fast elimination of overload in transmission line section based on simplified primal-dual interior point method[J].Automation of Electric Power Systems,2011,35(17):51-55. [20]王凯.基于复杂网络理论的电网结构复杂性和脆弱性研究[D].武汉:华中科技大学,2011. [21]鞠文云.基于复杂网络理论的电力系统脆弱元件辨识指标研究[D].武汉:华中科技大学,2013.
2015, Vol. 30 
