基于网络等效的配电网快速供电恢复策略并行化实现
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摘要
现代智能配电网在故障后可以调度需求侧的"灵活源"实现快速供电恢复。针对智能配电网的特点,提出了一种基于网络等效和并行化实现的快速供电恢复策略,能够灵活地利用电网资源以应对不同的失电情况。算法将支援线路等效为电源节点(称为等效源点),采用离线等效源点预存储与实时等效源点并行计算相结合的模式:保存并优先使用离线数据;在失电负荷较大时,调取实时数据对不同的调度可能进行并行计算。为进一步提升算法的时效性,利用改进邻接矩阵记录和维护电网拓扑结构,实现网络的高效重构。通过若干个算例,验证了该供电恢复策略在面对不同程度失电时均能合理高效地运用电网的各类支援资源,实现快速供电恢复。
Modern intelligent distribution network can achieve rapid power recovery by dispatching its "flexible sources" of the demand side. This paper proposes a fast power restoration strategy based on network equivalence and parallelization aiming at the characteristics of intelligent distribution network which can use power network resources flexibly to cope with different electrical energy loss. The algorithm uses special power supply nodes(called equivalent sources) to replace surrounding feeders, adopts parallel computation mode of combining off-line equivalent sources pre-storage with real-time ones. The off-line data is pre-stored and preferred to use. While facing larger electrical energy loss, the algorithm calculates in parallel the real-time equivalent sources corresponding to different dispatching possibilities. In order to further improve the efficiency, the algorithm uses improved adjacency matrix to maintain the radial topology and reconstruct the network efficiently. Several cases of different electrical energy loss are studied to show that this strategy can achieve rapid power recovery by using different support sources reasonably and efficiently.
Modern intelligent distribution network can achieve rapid power recovery by dispatching its "flexible sources" of the demand side. This paper proposes a fast power restoration strategy based on network equivalence and parallelization aiming at the characteristics of intelligent distribution network which can use power network resources flexibly to cope with different electrical energy loss. The algorithm uses special power supply nodes(called equivalent sources) to replace surrounding feeders, adopts parallel computation mode of combining off-line equivalent sources pre-storage with real-time ones. The off-line data is pre-stored and preferred to use. While facing larger electrical energy loss, the algorithm calculates in parallel the real-time equivalent sources corresponding to different dispatching possibilities. In order to further improve the efficiency, the algorithm uses improved adjacency matrix to maintain the radial topology and reconstruct the network efficiently. Several cases of different electrical energy loss are studied to show that this strategy can achieve rapid power recovery by using different support sources reasonably and efficiently.
引文
[1]CHEN K,WU W,ZHANG B,et al.Robust restoration decision-making model for distribution networks based on information gap decision theory[J].IEEE Transactions on Smart Grid,2015,6(2):587-597.
[2]刘莉,陈学锋,翟登辉.智能配电网故障恢复的现状与展望[J].电力系统保护与控制,2011,39(13):148-154.LIU Li,CHEN Xuefeng,ZHAI Denghui.Status and prospect of service restoration in smart distribution network[J].Power System Protection and Control,2011,39(13):148-154.
[3]NAHMAN J,STRBAC G.A new algorithm for service restoration in large-scale urban distribution systems[J].Electric Power Systems Research,1994,29(3):181-192.
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[8]赵晶晶,杨秀,符杨.考虑分布式发电孤岛运行方式的智能配电网供电恢复策略研究[J].电力系统保护与控制,2011,39(17):45-49.ZHAO Jingjing,YANG Xiu,FU Yang.Smart distribution system service restoration using distributed generation islanding technique[J].Power System Protection and Control,2011,39(17):45-49.
[9]黄弦超,杨雨,范闻博.配电网多故障抢修与供电恢复联合优化模型[J].电力系统自动化,2014,38(11):68-73.HUANG Xianchao,YANG Yu,FAN Wenbo.Combined optimization model for maintenance scheduling and service restoration of distribution system[J].Automation of Electric Power Systems,2014,38(11):68-73.
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[12]赵冬梅,郑朝明,高曙.配电网的供电优化恢复策略[J].电网技术,2003,27(5):67-71.ZHAO Dongmei,ZHENG Zhaoming,GAO Shu.Optimal service restoration strategy of distribution network[J].Power System Technology,2003,27(5):67-71.
[13]张东霞,姚良忠,马文媛.中外智能电网发展战略[J].中国电机工程学报,2013,33(31):1-14.ZHAO Dongxia,YAO Liangzhong,MA Wenyuan.Development strategies of smart grid in China and abroad[J].Proceedings of the CSEE,2013,33(31):1-14.
[14]王晶,陈骏宇,金华锋.含分布式电源的配电网动态孤岛划分博弈模型[J].电力系统保护与控制,2016,44(14):14-24.WANG Jing,CHEN Junyu,JIN Huafeng.A game model of dynamic island partition for distribution network with DGs[J].Power System Protection and Control,2016,44(14):14-24.
[15]于文鹏,刘东,翁嘉明.含分布式电源的配电网供电恢复模型及改进贪婪算法[J].电力系统自动化,2013,37(24):23-30.YU Wenpeng,LIU Dong,WENG Jiaming.A power restoring model for distribution network containing distributed generators and improved greedy algorithm[J].Automation of Electric Power Systems,2013,37(24):23-30.
[16]冯杰,陈骏宇,陈明军,等.基于图论的含分布式电源配电网故障恢复算法[J].中国电力,2015,48(6):63-71.FENG Jie,CHEN Junyu,CHEN Mingjun,et al.Research on graph theory-based service restoration algorithm of distribution network containing distributed generation[J].Electric Power,2015,48(6):63-71.
[17]林霞,时永,李强,等.基于DG接入的配网自动化系统保护策略的研究[J].电力系统保护与控制,2016,44(13):137-144.LIN Xia,SHI Yong,LI Qiang,et al.Research on the protection strategy of distribution automation system based on DG access[J].Power System Protection and Control,2016,44(13):137-144.
[18]邱关源.电路[M].4版.北京:高等教育出版社,1999:88-89.
[19]胡美玉,胡志坚,邓奥攀,等.基于元件层级和电源可达性的配电网可靠性评估混合算法[J].电力系统保护与控制,2016,44(8):22-29.HU Meiyu,HU Zhijian,DENG Aopan,et al.Hybrid algorithm for reliability evaluation of distribution network based on element hierarchy and power accessibility[J].Power System Protection and Control,2016,44(8):22-29.
[2]刘莉,陈学锋,翟登辉.智能配电网故障恢复的现状与展望[J].电力系统保护与控制,2011,39(13):148-154.LIU Li,CHEN Xuefeng,ZHAI Denghui.Status and prospect of service restoration in smart distribution network[J].Power System Protection and Control,2011,39(13):148-154.
[3]NAHMAN J,STRBAC G.A new algorithm for service restoration in large-scale urban distribution systems[J].Electric Power Systems Research,1994,29(3):181-192.
[4]吴文传,张伯明.基于待恢复树切割的配电网故障恢复实时算法[J].电力系统自动化,2003,27(12):50-54.WU Wenchuan,ZHANG Boming.A candidate restoring tree cutting based algorithm for real-time distribution system restoration[J].Automation of Electric Power Systems,2003,27(12):50-54.
[5]DIMITRIJEVIC S,RAJAKOVIC N.Service restoration of distribution networks considering switching operation costs and actual status of the switching equipment[J].IEEE Transactions on Smart Grid,2015,6(3):1227-1232.
[6]冯雪平,梁英,郭炳庆.基于图论的含分布式电源配电网供电恢复动态规划方法[J].电力系统保护与控制,2012,40(9):24-29.FENG Xueping,LIANG Ying,GUO Bingqing.A dynamic programming method based on graph theory for restoration of distribution system with DGs[J].Power System Protection and Control,2012,40(9):24-29.
[7]张钊,封亚琴.一种新型的配电网供电恢复重构寻优算法[J].电网技术,2008,32(7):51-55.ZHANG Zhao,FENG Yaqin.A novel optimization reconfiguration algorithm for power supply restoration of distribution network[J].Power System Technology,2008,32(7):51-55.
[8]赵晶晶,杨秀,符杨.考虑分布式发电孤岛运行方式的智能配电网供电恢复策略研究[J].电力系统保护与控制,2011,39(17):45-49.ZHAO Jingjing,YANG Xiu,FU Yang.Smart distribution system service restoration using distributed generation islanding technique[J].Power System Protection and Control,2011,39(17):45-49.
[9]黄弦超,杨雨,范闻博.配电网多故障抢修与供电恢复联合优化模型[J].电力系统自动化,2014,38(11):68-73.HUANG Xianchao,YANG Yu,FAN Wenbo.Combined optimization model for maintenance scheduling and service restoration of distribution system[J].Automation of Electric Power Systems,2014,38(11):68-73.
[10]吴建中,余贻鑫.一种高效的配电网供电恢复算法[J].电网技术,2003,27(10):82-86.WU Jianzhong,YU Yixin.An efficient algorithm for distribution network service restoration[J].Power System Technology,2003,27(10):82-86.
[11]徐玉琴,李雪冬,张丽.基于多智能体免疫算法的配电网供电恢复[J].华北电力大学学报(自然科学版),2010,37(2):15-19.XU Yuqin,LI Xuedong,ZHANG Li.Application of multi-agent immune algorithm for distribution service restoration[J].North China Electric Power University(Natural Science),2010,37(2):15-19.
[12]赵冬梅,郑朝明,高曙.配电网的供电优化恢复策略[J].电网技术,2003,27(5):67-71.ZHAO Dongmei,ZHENG Zhaoming,GAO Shu.Optimal service restoration strategy of distribution network[J].Power System Technology,2003,27(5):67-71.
[13]张东霞,姚良忠,马文媛.中外智能电网发展战略[J].中国电机工程学报,2013,33(31):1-14.ZHAO Dongxia,YAO Liangzhong,MA Wenyuan.Development strategies of smart grid in China and abroad[J].Proceedings of the CSEE,2013,33(31):1-14.
[14]王晶,陈骏宇,金华锋.含分布式电源的配电网动态孤岛划分博弈模型[J].电力系统保护与控制,2016,44(14):14-24.WANG Jing,CHEN Junyu,JIN Huafeng.A game model of dynamic island partition for distribution network with DGs[J].Power System Protection and Control,2016,44(14):14-24.
[15]于文鹏,刘东,翁嘉明.含分布式电源的配电网供电恢复模型及改进贪婪算法[J].电力系统自动化,2013,37(24):23-30.YU Wenpeng,LIU Dong,WENG Jiaming.A power restoring model for distribution network containing distributed generators and improved greedy algorithm[J].Automation of Electric Power Systems,2013,37(24):23-30.
[16]冯杰,陈骏宇,陈明军,等.基于图论的含分布式电源配电网故障恢复算法[J].中国电力,2015,48(6):63-71.FENG Jie,CHEN Junyu,CHEN Mingjun,et al.Research on graph theory-based service restoration algorithm of distribution network containing distributed generation[J].Electric Power,2015,48(6):63-71.
[17]林霞,时永,李强,等.基于DG接入的配网自动化系统保护策略的研究[J].电力系统保护与控制,2016,44(13):137-144.LIN Xia,SHI Yong,LI Qiang,et al.Research on the protection strategy of distribution automation system based on DG access[J].Power System Protection and Control,2016,44(13):137-144.
[18]邱关源.电路[M].4版.北京:高等教育出版社,1999:88-89.
[19]胡美玉,胡志坚,邓奥攀,等.基于元件层级和电源可达性的配电网可靠性评估混合算法[J].电力系统保护与控制,2016,44(8):22-29.HU Meiyu,HU Zhijian,DENG Aopan,et al.Hybrid algorithm for reliability evaluation of distribution network based on element hierarchy and power accessibility[J].Power System Protection and Control,2016,44(8):22-29.