输配电网一体化分布式潮流计算方法
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摘要
随着大量分布式电源和电动汽车接入配电网,传统的输配电网相互独立的潮流计算已不再适合。考虑到输配电网由不同层级控制中心监控和管理,提出了基于主从分裂的输配电网一体化分布式潮流计算方法。该方法以输配全局电网作为研究对象,将一体化潮流问题分成输电网潮流计算、多个配电网潮流计算和边界节点协调子问题,其中,输、配电网潮流计算子问题分别采用牛顿法和前推回代法来解决,并通过边界节点电压和等值功率的交换实现输配电网一体化分布式潮流计算。最后,对IEEE-30节点输电系统和IEEE-33节点三相不平衡配电系统构造的全局电力系统进行仿真,结果表明该方法的有效性。
Due to access of a large number of distributed generations and electric vehicles into power distribution networks,traditional mutually independent power flow calculations for power transmission grid and distribution grid are not suitable any more.In view of that the power transmission grid and the distribution grid are monitored and managed by different control centers,this paper presents a method for integrated distributed power flow calculation for the power transmission and distribution grid based on master-slave-splitting method.This calculation method takes the global power transmission and distribution grid as the research object and divides the problem of integrated power flow into three sub-problems including the transmission grid power flow calculation,power flow calculation for multiple distribution grids and boundary node coordination.Newton method and the forward-backward sweep method is respectively adopted to solve sub-problems of power flow calculations for the transmission grid and the distribution grid,and integrated distributed power flow calculation of the transmission and distribution grid is realized by exchange of the boundary node voltage and equivalent power.Finally,simulation result of the global power system constructed by IEEE-30 node transmission system and IEEE-33 node unbalanced threephase power distribution system indicates effectiveness of the proposed method.
Due to access of a large number of distributed generations and electric vehicles into power distribution networks,traditional mutually independent power flow calculations for power transmission grid and distribution grid are not suitable any more.In view of that the power transmission grid and the distribution grid are monitored and managed by different control centers,this paper presents a method for integrated distributed power flow calculation for the power transmission and distribution grid based on master-slave-splitting method.This calculation method takes the global power transmission and distribution grid as the research object and divides the problem of integrated power flow into three sub-problems including the transmission grid power flow calculation,power flow calculation for multiple distribution grids and boundary node coordination.Newton method and the forward-backward sweep method is respectively adopted to solve sub-problems of power flow calculations for the transmission grid and the distribution grid,and integrated distributed power flow calculation of the transmission and distribution grid is realized by exchange of the boundary node voltage and equivalent power.Finally,simulation result of the global power system constructed by IEEE-30 node transmission system and IEEE-33 node unbalanced threephase power distribution system indicates effectiveness of the proposed method.
引文
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[10]卫鹏,刘建坤,周前,等.基于半不变量和Gram-Charlier级数展开法的随机潮流算法[J].电力工程技术,2017,36(1):34-38.WEI Peng,LIU Jiankun,ZHOU Qian,et al.A probabilistic power flow algorithm based on semi-variable and GramCharlier series expansion[J].Electric Power Engineering Technology,2017,36(1):34-38.
[11]樊乃娟,尹建华,赵进全,等.连续潮流法中最优参数化组合方法分析[J].陕西电力,2016,42(1):69-71,78.FAN Naijuan,YIN Jianhua,ZHAO Jinquan,et al.Probe into optimal combination of parameterization in continuous power flow[J].Shaanxi Electric Power,2016,42(1):69-71,78.
[12]SUN H B,GUO Q L,ZHANG B M,et al.Master-slavesplitting based distributed global power flow method for integrated transmission and distribution analysis[J].IEEE Transaction on Smart Grid,2015,6(3):1484-1492.
[13]王艳玲,韩学山,周晓峰.含DG的输配电系统联合扩展潮流计算[J].电力系统保护与控制,2011,39(21):34-44.WANG Yanling,HAN Xueshan,ZHOU Xiaofeng.Transmission-distribution joint expanded power flow calculation with distributed generators[J].Power System Protection and Control,2011,39(21):34-44.
[14]陈羽,刘东,廖怀庆,等.网格计算环境下输配电网联合潮流计算[J].电力系统保护与控制,2012,40(5):42-47.CHEN Yu,LIU Dong,LIAO Huaiqing,et al.Transmission and distribution networks united power flow under grid computing environment[J].Power System Protection and Control,2012,40(5):42-47.
[15]赵晋泉,江晓东,张伯明.潮流计算中PV-PQ节点转换逻辑的研究[J].中国电机工程学报,2005,25(1):54-59.ZHAO Jinquan,CHIANG Hsiaodong,ZHANG Boming.Study on PV-PQ bus type switching logic in power flow computation[J].Proceedings of the CSEE,2005,25(1):54-59.
[2]谢海波,武小梅,林翔,等.含DG的配电网无功优化研究综述[J].广东电力,2017,30(2):102-109.XIE Haibo,WU Xiaomei,LIN Xiang,et al.Review on reactive power optimization for power distribution network with distributed generation[J].Guangdong Electric Power,2017,30(2):102-109.
[3]赵波,王财胜,周金辉,等.主动配电网现状与未来发展[J].电力系统自动化,2014,38(18):125-135.ZHAO Bo,WANG Caisheng,ZHOU Jinhui,et al.Present and future development trend of active distribution network[J].Automation of Electric Power Systems,2014,38(18):125-135.
[4]王锡凡.现代电力系统分析[M].北京:科学出版社,2003.
[5]陈海焱,陈金富,段献忠.含DG的配电网潮流计算[J].电力系统自动化,2006,30(1):35-39.CHEN Haiyan,CHEN Jinfu,DUAN Xianzhong.Study on power flow calculation of distribution system with DG[J].Automation of Electric Power Systems,2006,30(1):35-39.
[6]王守相,黄丽娟,王成山,等.分布式发电系统的不平衡三相潮流计算[J].电力自动化设备,2007,27(8):11-15.WANG Shouxiang,HUANG Lijuan,WANG Chengshan,et al.Unbalanced three-phase power flow calculation for distributed power generation system[J].Electric Power Automation Equipment,2007,27(8):11-15.
[7]任杰,车长明,李建祥,等.含EV接入的配网潮流计算及调度策略[J].电源技术应用,2015,41(10):136-142.REN Jie,CHE Changming,LI Jianxiang,et al.Power flow calculation and scheduling strategies for distribution grids with electric vehicle integration[J].Power Supply Technology and Its Application,2015,41(10):136-142.
[8]孙宏斌,张伯明,相年德.发输配全局潮流计算-第一部分:数学模型与基本算法[J].电网技术,1998,22(12):39-42.SUN Hongbin,ZHANG Boming,XIANG Niande.Global power flow calculation-part 1:model and method[J].Power System Technology,1998,22(12):39-42.
[9]孙宏斌,张伯明,相年德,等.发输配全局潮流计算-第二部分:收敛性、实用算法和算例[J].电网技术,1999,23(1):50-53.SUN Hongbin,ZHANG Boming,XIANG Niande,et al.Global power flow calculation-part 2:convergence,practical algorithm and numerical test[J].Power System Technology,1999,23(1):50-53.
[10]卫鹏,刘建坤,周前,等.基于半不变量和Gram-Charlier级数展开法的随机潮流算法[J].电力工程技术,2017,36(1):34-38.WEI Peng,LIU Jiankun,ZHOU Qian,et al.A probabilistic power flow algorithm based on semi-variable and GramCharlier series expansion[J].Electric Power Engineering Technology,2017,36(1):34-38.
[11]樊乃娟,尹建华,赵进全,等.连续潮流法中最优参数化组合方法分析[J].陕西电力,2016,42(1):69-71,78.FAN Naijuan,YIN Jianhua,ZHAO Jinquan,et al.Probe into optimal combination of parameterization in continuous power flow[J].Shaanxi Electric Power,2016,42(1):69-71,78.
[12]SUN H B,GUO Q L,ZHANG B M,et al.Master-slavesplitting based distributed global power flow method for integrated transmission and distribution analysis[J].IEEE Transaction on Smart Grid,2015,6(3):1484-1492.
[13]王艳玲,韩学山,周晓峰.含DG的输配电系统联合扩展潮流计算[J].电力系统保护与控制,2011,39(21):34-44.WANG Yanling,HAN Xueshan,ZHOU Xiaofeng.Transmission-distribution joint expanded power flow calculation with distributed generators[J].Power System Protection and Control,2011,39(21):34-44.
[14]陈羽,刘东,廖怀庆,等.网格计算环境下输配电网联合潮流计算[J].电力系统保护与控制,2012,40(5):42-47.CHEN Yu,LIU Dong,LIAO Huaiqing,et al.Transmission and distribution networks united power flow under grid computing environment[J].Power System Protection and Control,2012,40(5):42-47.
[15]赵晋泉,江晓东,张伯明.潮流计算中PV-PQ节点转换逻辑的研究[J].中国电机工程学报,2005,25(1):54-59.ZHAO Jinquan,CHIANG Hsiaodong,ZHANG Boming.Study on PV-PQ bus type switching logic in power flow computation[J].Proceedings of the CSEE,2005,25(1):54-59.