多支路开断潮流自转移和互转移识别算法研究
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摘要
针对多支路开断的潮流转移问题,给了一种分析潮流自转移和互转移的多支路开断识别新算法。当电力系统发生多支路同时开断时,分析潮流转移的折返过程,利用改进Floyd算法通过路径搜索确定潮流转移线路集合。利用直流潮流方法推导了多支路开断的支路开断分布因子,计算潮流转移危险指数识别出存在过载风险的支路构成关键支路集。文中在最短路径搜索、广义潮流转移严重区的确定方面作了重要改进,适应于多支路开断潮流转移的有效识别。IEEE 39节点算例验证了该算法对多支路开断潮流转移识别的有效性。
A new identification algorithm of power flow transferring for multi-branch removal event based on analysis of self and mutual transferring of power flow is proposed in this paper. When excision of many lines happens,refraction and reflection process of flow transferring is analyzed. The improved Floyd algorithm is adopted to determine the power flow routing set by path search. Based on the DC power flow method,the calculation of line tripping distribution factors is deduced,and the key branch set is formed by calculating the danger index of power flow transferring. Considerable improvements of the shortest path search and determination of generalized power flow transferring critical area are put forward,which are suitable for the effective identification of multi-branch removal. The simulation results of IEEE39-node system verified the effectiveness of the proposed algorithm.
A new identification algorithm of power flow transferring for multi-branch removal event based on analysis of self and mutual transferring of power flow is proposed in this paper. When excision of many lines happens,refraction and reflection process of flow transferring is analyzed. The improved Floyd algorithm is adopted to determine the power flow routing set by path search. Based on the DC power flow method,the calculation of line tripping distribution factors is deduced,and the key branch set is formed by calculating the danger index of power flow transferring. Considerable improvements of the shortest path search and determination of generalized power flow transferring critical area are put forward,which are suitable for the effective identification of multi-branch removal. The simulation results of IEEE39-node system verified the effectiveness of the proposed algorithm.
引文
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[12]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,(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,(2):39-45.
[13]徐岩,韩平.防止距离III段保护因过负荷误动方法的分析与改进[J].电力系统保护与控制,2015,(7):1-7.Xu Yan,Han Ping.Analysis and improvement for the scheme to prevent zone III distance protection from incorrect operation caused by non-fault overload.[J].Power System Protection and Control,2015,(7):1-7.
[14]徐岩,郅静.基于图论和电压相角的潮流转移危险线路快速搜索[J].华北电力大学学报自然科学版,2015,42(4):1-7.Xu Yan,Zhen Jing.Fast search of dangerous lines in power flow transferring based on graph theory and voltage phasor angle[J].Journal of North China Electric Power University,2015,42(4):1-7.
[15]刘献超,任建文,渠卫东.基于广度优先法的多支路连锁切除潮流转移快速搜索算法[J].电力系统自动化,2015,(13):69-74.Liu Xianchao,Ren Jianwen,Qv Weidong.A fast search algorithm of power flow transfer for multi-branches removal event based on breadth fist search[J].Automation of Electric Power Systems,2015,(13):69-74.作者简介:
[2]Zhang B,Hao Z,Bo Z.New development in relay protection for smart grid[J].Protection&Control of Modern Power Systems,2016,1(1):14.
[3]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,(4):84-88.Yang Wenhui,Bi Tianshu,Xue Ancheng,et al.An approach for quickly searching power thansferring paths based on graph theory[J].Power System Technology,2012,(4):84-88.
[4]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,(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,(4):193-201.
[5]聂宏展,袁晓丹,张会强,等.基于多支路开断和关键支路集的快速潮流转移识别[J].电力系统保护与控制,2014,(17):38-43.Nie Hongzhan,Yuan Xiaodan,Zhang Huiqiang,et al.Rapid flow transferring identification based on multiple line tripping and key branch set[J].Power System Protection and Control,2014,(17):38-43.
[6]任建文,何培成,李刚.基于虚拟支路模型与FTIL的多支路开断潮流转移搜索新算法[J].电网技术,2017,41(1):194-200.Ren Jianwen,He Peicheng,Li Gang.A new searching algorithm of power flow transferring for multi-branch removal event based on virtual-branch model and FTIL[J].Power System Technology,2017,41(1):194-200.
[7]徐慧明,毕天姝,黄少锋,等.计及暂态过程的多支路切除潮流转移识别算法研究[J].中国电机工程学报,2007,27(16):24-30.Xu Huiming,Bi Tianshu,Huang Shaofeng,et al.Flow transferring identification algo-rithm for multi-branches removal event with consideration of transient phenomena[J].Proceedings of the CSEE,2007,27(16):24-30.
[8]张伯明,陈寿孙,严正.高等电力网络分析[M].清华大学出版社,2007:208-217.
[9]高超,杨明鑫,谢明明,等.基于低维度多环网块的潮流转移快速搜索[J].电测与仪表,2015,52(17):53-57.Gao Chao,Yang Mingxin,Xie Mingming,et al.Fast search of flow transferring based on low-dimensional multi-loop network blocks[J].E-lectrical Measurement&Instrumentation,2015,52(17):53-57.
[10]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.
[11]殷自力,陈宇星.基于功率传输转移分布因子的简化电网潮流计算方法[J].电力系统保护与控制,2016,44(17):25-30.Yin Zili,Chen Yuxing.A power flow computation method for reduction grid based on power transfer distribution factor[J].Power System Protection and Control,2016,44(17):25-30.
[12]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,(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,(2):39-45.
[13]徐岩,韩平.防止距离III段保护因过负荷误动方法的分析与改进[J].电力系统保护与控制,2015,(7):1-7.Xu Yan,Han Ping.Analysis and improvement for the scheme to prevent zone III distance protection from incorrect operation caused by non-fault overload.[J].Power System Protection and Control,2015,(7):1-7.
[14]徐岩,郅静.基于图论和电压相角的潮流转移危险线路快速搜索[J].华北电力大学学报自然科学版,2015,42(4):1-7.Xu Yan,Zhen Jing.Fast search of dangerous lines in power flow transferring based on graph theory and voltage phasor angle[J].Journal of North China Electric Power University,2015,42(4):1-7.
[15]刘献超,任建文,渠卫东.基于广度优先法的多支路连锁切除潮流转移快速搜索算法[J].电力系统自动化,2015,(13):69-74.Liu Xianchao,Ren Jianwen,Qv Weidong.A fast search algorithm of power flow transfer for multi-branches removal event based on breadth fist search[J].Automation of Electric Power Systems,2015,(13):69-74.作者简介: