基于电流转移比例系数的复杂网络输电断面识别方法
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摘要
输电断面的可靠识别对预防连锁过载跳闸具有重要意义。根据潮流转移的路径特征及电流特性,提出一种基于电流转移比例系数的复杂网络输电断面识别方法。构建电网拓扑模型及图论矩阵,并在此基础上简化系统网络;通过关联矩阵不定向搜索方法建立旁侧路径库,限定输电断面的识别范围;采用回路电流法快速求解复杂耦合网络中各线路电流转移比例系数;考虑潮流正向叠加及反向对消作用进行比例系数修正,并据此确定输电断面集合,有效避免了反向过载路径的遗漏。最后,将耦合系统、新英格兰10机39节点系统和IEEE 118节点系统的断面识别结果与仿真数据进行对比,验证了所提输电断面识别方法的准确性和有效性。
Reliable identification of transmission section is important for avoiding cascading failures caused by transferring power flow in power systems. Considering characteristics of power flow transferring, this paper designed an identification method of transmission section in complex power grid based on current transferring ratio. Power network can be simplified based on theoretic topology and relation matrices. To reduce search scope of transmission sections, flow transferring path section is established with non-directional search method. Cyclic current method is used to get current transferring ratio in complex power grid. Considering influence of positive and negative currents, the ratio is corrected to avoid omission of reverse overloaded lines. At last, correctness and effectiveness of the proposed method were verified with simulations of a coupling system, New England 39-bus system and IEEE 118-bus system.
Reliable identification of transmission section is important for avoiding cascading failures caused by transferring power flow in power systems. Considering characteristics of power flow transferring, this paper designed an identification method of transmission section in complex power grid based on current transferring ratio. Power network can be simplified based on theoretic topology and relation matrices. To reduce search scope of transmission sections, flow transferring path section is established with non-directional search method. Cyclic current method is used to get current transferring ratio in complex power grid. Considering influence of positive and negative currents, the ratio is corrected to avoid omission of reverse overloaded lines. At last, correctness and effectiveness of the proposed method were verified with simulations of a coupling system, New England 39-bus system and IEEE 118-bus system.
引文
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[14]周泽昕,王兴国,杜丁香,等.过负荷状态下保护与稳定控制协调策略[J].中国电机工程学报,2013,33(28):146-153,22.Zhou Zexin,Wang Xingguo,Du Dingxiang,et al.A coordination strategy between relay protection and stability control under overload conditions[J].Proceedings of the CSEE,2013,33(28):146-153,22(in Chinese).
[15]徐岩,吕彬,王增平.基于广域测量系统的潮流转移识别方法[J].中国电机工程学报,2013,33(28):154-160,23.Xu Yan,LüBin,Wang Zengping.A power flow transfer identification scheme based on WAMS[J].Proceedings of the CSEE,2013,33(28):154-160,23(in Chinese).
[16]任建文,魏俊姣.电力系统脆弱线路的识别及其输电断面搜索[J].电力自动化设备,2015,35(7):37-42.Ren Jianwen,Wei Junjiao.Vulnerable line identification and its transmission section search for power system[J].Electric Power Automation Equipment,2015,35(7):37-42(in Chinese).
[17]倪宏坤,徐玉琴.基于动态规划原理分支界限算法的关键输电断面搜索方法[J].华北电力大学学报,2009,36(4):11-15.Ni Hongkun,Xu Yuqin.Fast search for the key transmission section based on dynamic-programming principle[J].Journal of North China Electric Power University,2009,36(4):11-15(in Chinese).
[18]任建文,李刚,王增平,等.基于背离路径的输电断面搜索新算法[J].电网技术,2012,36(4):121-127.Ren Jianwen,Li Gang,Wang Zengping,et al.New algorithm for searching tie lines based on deviation path[J].Power System Technology,2012,36(4):121-127(in Chinese).
[2]毛安家,张戈力,吕跃春,等.2011年9月8日美墨大停电事故的分析及其对我国电力调度运行管理的启示[J].电网技术,2012,36(4):74-78.Mao Anjia,Zhang Geli,LüYuechun,et al.Analysis on large-scale blackout occurred in South America and North Mexico Interconnected Power Grid on Sept.8,2011 and lessons for electric power dispatching in China[J].Power System Technology,2012,36(4):74-78(in Chinese).
[3]徐岩,韩平,张立.计及振荡过程的电力系统潮流转移识别方案[J].电网技术,2016,40(3):853-860.Xu Yan,Han Ping,Zhang Li.A scheme for power flow transfer identification concerning power swing[J].Power System Technology,2016,40(3):853-860(in Chinese).
[4]张涛,孙晓伟,徐雪琴,等.基于有功潮流介数的电网关键线路辨识[J].电网技术,2016,40(1):193-198.Zhang Tao,Sun Xiaowei,Xu Xueqin,et al.Identification of critical lines in power grid based on active power flow betweenness[J].Power System Technology,2016,40(1):193-198(in Chinese).
[5]李勇,刘俊勇,刘晓宇,等.基于潮流熵测度的连锁故障脆弱线路评估及其在四川主干电网中的应用[J].电力自动化设备,2013,33(10):40-46.Li Yong,Liu Junyong,Liu Xiaoyu,et al.Vulnerability assessment based on power flow entropy for lines in cascading failures and its application in Sichuan backbone power grid[J].Electric Power Automation Equipment,2013,33(10):40-46(in Chinese).
[6]周德才,张保会,姚峰.基于图论的输电断面快速搜索[J].中国电机工程学报,2006,26(12):32-38.Zhou Decai,Zhang Baohui,Yao Feng.Fast search for transmission section based on graph theory[J].Proceedings of the CSEE,2006,26(12):32-38(in Chinese).
[7]赵峰,孙宏斌,谭嫣,等.综合考虑多种电网安全主题的关键断面自动发现方法[J].电网技术,2014,38(5):1169-1174.Zhao Feng,Sun Hongbin,Tan Yan,et al.Automatic discovery method of power system critical flowgates considering multiple security themes in power grid[J].Power System Technology,2014,38(5):1169-1174(in Chinese).
[8]程临燕,张保会,郝治国.基于线路功率组成的关键输电断面快速搜索[J].中国电机工程学报,2010,30(10):50-56.Cheng Linyan,Zhang Baohui,Hao Zhiguo.Fast search for key transmission section based on power component of line[J].Proceedings of the CSEE,2010,30(10):50-56(in Chinese).
[9]张保会,姚峰,周德才.输电断面安全性保护及其关键技术研究[J].中国电机工程学报,2006,26(21):1-7.Zhang Baohui,Yao Feng,Zhou Decai.Study on security protection of transmission section and its key technologies[J].Proceedings of the CSEE,2006,26(21):1-7(in Chinese).
[10]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(in Chinese).
[11]徐慧明,毕天姝,黄少锋,等.基于潮流转移因子的广域后备保护方案[J].电网技术,2006,30(15):65-71.Xu Huiming,Bi Tianshu,Huang Shaofeng,et al.A wide area backup protection scheme based on flow transferring relativity factor[J].Power System Technology,2006,30(15):65-71(in Chinese).
[12]杨燕,文福拴,王洁,等.计及关键支路的输电断面自动确定方法[J].电力系统自动化,2012,36(14):6-10.Yang Yan,Wen Fushuan,Wang Jie,et al.A method for automatic discovery of transmission sections with critical branches taken into consideration[J].Automation of Electric Power System,2012,36(14):6-10(in Chinese).
[13]李莎,任建文.基于有功增加因子的潮流转移快速搜索[J].电网技术,2012,36(12):176-181.Li Sha,Ren Jianwen.Fast search of power flow transfers based on active power increase factor[J].Power System Technology,2012,36(12):176-181(in Chinese).
[14]周泽昕,王兴国,杜丁香,等.过负荷状态下保护与稳定控制协调策略[J].中国电机工程学报,2013,33(28):146-153,22.Zhou Zexin,Wang Xingguo,Du Dingxiang,et al.A coordination strategy between relay protection and stability control under overload conditions[J].Proceedings of the CSEE,2013,33(28):146-153,22(in Chinese).
[15]徐岩,吕彬,王增平.基于广域测量系统的潮流转移识别方法[J].中国电机工程学报,2013,33(28):154-160,23.Xu Yan,LüBin,Wang Zengping.A power flow transfer identification scheme based on WAMS[J].Proceedings of the CSEE,2013,33(28):154-160,23(in Chinese).
[16]任建文,魏俊姣.电力系统脆弱线路的识别及其输电断面搜索[J].电力自动化设备,2015,35(7):37-42.Ren Jianwen,Wei Junjiao.Vulnerable line identification and its transmission section search for power system[J].Electric Power Automation Equipment,2015,35(7):37-42(in Chinese).
[17]倪宏坤,徐玉琴.基于动态规划原理分支界限算法的关键输电断面搜索方法[J].华北电力大学学报,2009,36(4):11-15.Ni Hongkun,Xu Yuqin.Fast search for the key transmission section based on dynamic-programming principle[J].Journal of North China Electric Power University,2009,36(4):11-15(in Chinese).
[18]任建文,李刚,王增平,等.基于背离路径的输电断面搜索新算法[J].电网技术,2012,36(4):121-127.Ren Jianwen,Li Gang,Wang Zengping,et al.New algorithm for searching tie lines based on deviation path[J].Power System Technology,2012,36(4):121-127(in Chinese).