基于智能配电终端的分布式供电恢复方法
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摘要
针对配电网集中式供电恢复方法存在信息交互范围大、集中式决策系统计算量大等问题,提出了一种基于智能配电终端的分布式供电恢复方法。描述了以智能配电终端为核心的分布式供电恢复系统的结构和功能,在基于智能终端间对等通信交互信息的基础上,提出了分布式供电恢复的实现方法,包括分布式拓扑搜索和供电恢复控制两部分。首先采用分布式的方法搜索非故障停电区域,然后基于逆向搜索与约束条件相结合的方法确定可恢复供电区域,最后考虑分布式电源的特性和约束条件确定孤岛运行区域。提出了与分布式供电恢复网络拓扑搜索过程相适应的约束条件简化求解方法,以电网逐步戴维南等值为基础,在确定可恢复供电区域的搜索过程中实现功率、电压、支路潮流约束验证,同时还考虑了电网有分支时对约束条件的修正,无需进行集中式的潮流计算。算例分析验证了所提方法的有效性。
There are many problems with traditional centralized power service restoration method,such as wide information interaction range and lots of calculation,so a distributed power service restoration method based on smart terminal unit is proposed.This paper describes the structure and function of distributed power service restoration system with the smart terminal unit as the core, which can use peer to peer communication to exchange information. On this basis,the implementation of distributed power service restoration method including two parts of distributed topology search and service restoration control is put forward.First of all,the distributed method is used to search for the out-of-service area.Then,the scope of the actual restoration is determined based on adverse searching method and constraint conditions.Finally,considering the characteristics of distributed generation and constraints,the islanding scope is determined.The simplified calculation method of the constraint conditions is proposed,which is compatible with the topology search process of distributed service restoration and is based on stepwise Thevenin equivalent.The power,voltage and branch power flow constraints are carried out in the search process of the restorable area without the need for centralized power flow calculation.Furthermore,the effect of the branch is discussed and the method is improved.Finally,one case study is given to validate the proposed method.
There are many problems with traditional centralized power service restoration method,such as wide information interaction range and lots of calculation,so a distributed power service restoration method based on smart terminal unit is proposed.This paper describes the structure and function of distributed power service restoration system with the smart terminal unit as the core, which can use peer to peer communication to exchange information. On this basis,the implementation of distributed power service restoration method including two parts of distributed topology search and service restoration control is put forward.First of all,the distributed method is used to search for the out-of-service area.Then,the scope of the actual restoration is determined based on adverse searching method and constraint conditions.Finally,considering the characteristics of distributed generation and constraints,the islanding scope is determined.The simplified calculation method of the constraint conditions is proposed,which is compatible with the topology search process of distributed service restoration and is based on stepwise Thevenin equivalent.The power,voltage and branch power flow constraints are carried out in the search process of the restorable area without the need for centralized power flow calculation.Furthermore,the effect of the branch is discussed and the method is improved.Finally,one case study is given to validate the proposed method.
引文
[1]刘鹏程.智能配电网故障定位与恢复重构研究[D].北京:华北电力大学(北京),2016.LIU Pengcheng.Research on fault location and recovery reconfiguration of smart distribution networks[D].Beijing:North China Electric Power University(Beijing),2016.
[2]华煌圣,刘育权,张君泉,等.基于配电管理系统的“花瓣”型配电网供电恢复控制策略[J].电力系统自动化,2016,40(1):102-107.DOI:10.7500/AEPS20150204001.HUA Huangsheng,LIU Yuquan,ZHANG Junquan,et al.Recovery control scheme for petal-shape distribution network based on distribution management system[J].Automation of Electric Power Systems,2016,40(1):102-107.DOI:10.7500/AEPS20150204001.
[3]刘丹丹,段斌,王俊,等.基于IEC 61850的主动配电网故障自恢复多代理系统[J].电力系统自动化,2015,39(9):119-126.DOI:10.7500/AEPS20140829003.LIU Dandan,DUAN Bin,WANG Jun,et al.A multi-agent system for fault self-recovery of distribution systems in active distribution network based on IEC 61850[J].Automation of Electric Power Systems,2015,39(9):119-126.DOI:10.7500/AEPS20140829003.
[4]杨丽君,吕雪姣,李丹,等.含分布式电源的配电网多故障抢修与恢复协调优化策略[J].电力系统自动化,2016,40(20):13-19.DOI:10.7500/AEPS20160116002.YANG Lijun,LYU Xuejiao,LI Dan,et al.Coordinated optimization strategy of multi-fault repair and recovery for distribution network with distributed generators[J].Automation of Electric Power Systems,2016,40(20):13-19.DOI:10.7500/AEPS20160116002.
[5]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 modle for distribution network containing distributed generators and improved greedy algorithm[J].Automation of Electric Power Systems,2013,37(24):23-30.
[6]王旭东,林济铿.基于分支定界的含分布式发电配网孤岛划分[J].中国电机工程学报,2011,31(7):16-20.WANG Xudong,LIN Jikeng.Island partition of the distribution system with distributed generation based on branch and bound algorithm[J].Proceedings of the CSEE,2011,31(7):16-20.
[7]HU Rui,HU Weibao,LI Pengfei,et al.A dynamic programming based method for optimizing power system restoration with high wind power penetration[C]//IEEEInternational Power Electronics and Motion Control Conference,May 22-26,2016,Hefei,China:2022-2027.
[8]刘志文,夏文波,刘明波.实现微网供电恢复的分布式电源自组网策略[J].电力系统自动化,2015,39(9):192-199.DOI:10.7500/AEPS20140522005.LIU Zhiwen,XIA Wenbo,LIU Mingbo.Distributed generator self-organized network strategy applied to microgrid applied to microgrid service restoration[J].Automation of Electric Power Systems,2015,39(9):192-199.DOI:10.7500/AEPS20140522005.
[9]侯宇翔,彭敏放,朱亮,等.考虑联络线转供及孤岛划分的配电网风险评估[J].电力自动化设备,2017,37(10):79-85.HOU Yuxiang,PENG Minfang,ZHU Liang,et al.Risk assessment for distribution network considering tie line transfer and island partition[J].Electric Power Automation Equipment,2017,37(10):79-85.
[10]庞清乐,高厚磊,李天友.基于负荷均衡的智能配电网故障恢复[J].电网技术,2013,37(2):342-348.PANG Qingle,GAO Houlei,LI Tianyou.Load balancing based fault service restoration for smart distribution grid[J].Power System Technology,2013,37(2):342-348.
[11]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.DOI:10.7500/AEPS20130506015.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.DOI:10.7500/AEPS20130506015.
[12]许志荣,杨苹,彭嘉俊,等.单三相混合供电制式多微网联网路径搜索及源荷储恢复策略[J].电力系统自动化,2017,41(16):80-87.DOI:10.7500/AEPS20161130023.XU Zhirong,YANG Ping,PENG Jiajun,et al.Reconnected path search and restoration strategy of sources-loads-storage system for multi-microgrids with single-phase/three-phase architecture[J].Automation of Electric Power Systems,2017,41(16):80-87.DOI:10.7500/AEPS20161130023.
[13]CHEN Dan,CHEN Xingying,LIU Jian,et al.Service restoration study of distribution system with distributed generators based on particle swarm optimization[C]//International Conference on Advanced Power System Automation and Protection,October 16-20,2011,Beijing,China:1176-1181.
[14]MISHRA R K,SWARUP K S.Smart distribution network restoration using multi agent system[C]//Power Systems Conference,December 9-21,2016,Bhubaneswar,India:1-6.
[15]王守相,李晓静,肖朝霞,等.含分布式电源的配电网供电恢复的多代理方法[J].电力系统自动化,2007,31(10):61-65.WANG Shouxiang,LI Xiaojing,XIAO Zhaoxia,et al.Multiagent approach for service restoration of distribution system containing distributed generations[J].Automation of Electric Power Systems,2007,31(10):61-65.
[16]郭玉天.含分布式电源的配电网重构研究[D].保定:华北电力大学,2013.GUO Yutian.Research on distribution networks reconfiguration with distributed generations[D].Baoding:North China Electric Power University,2013.
[17]王增平,张丽,徐玉琴,等.含分布式电源的配电网大面积断电供电恢复策略[J].中国电机工程学报,2010,30(34):8-14.WANG Zengping,ZHANG Li,XU Yuqin,et al.Service restoration strategy for blackout of distribution system with distributed generators[J].Proceedings of the CSEE,2010,30(34):8-14.
[18]刘蓓.智能配电网故障定位与故障恢复方法研究[D].长沙:湖南大学,2014.LIU Bei.Research on fault location and fault recovery for smart distribution networks[D].Changsha:Hunan University,2014.
[2]华煌圣,刘育权,张君泉,等.基于配电管理系统的“花瓣”型配电网供电恢复控制策略[J].电力系统自动化,2016,40(1):102-107.DOI:10.7500/AEPS20150204001.HUA Huangsheng,LIU Yuquan,ZHANG Junquan,et al.Recovery control scheme for petal-shape distribution network based on distribution management system[J].Automation of Electric Power Systems,2016,40(1):102-107.DOI:10.7500/AEPS20150204001.
[3]刘丹丹,段斌,王俊,等.基于IEC 61850的主动配电网故障自恢复多代理系统[J].电力系统自动化,2015,39(9):119-126.DOI:10.7500/AEPS20140829003.LIU Dandan,DUAN Bin,WANG Jun,et al.A multi-agent system for fault self-recovery of distribution systems in active distribution network based on IEC 61850[J].Automation of Electric Power Systems,2015,39(9):119-126.DOI:10.7500/AEPS20140829003.
[4]杨丽君,吕雪姣,李丹,等.含分布式电源的配电网多故障抢修与恢复协调优化策略[J].电力系统自动化,2016,40(20):13-19.DOI:10.7500/AEPS20160116002.YANG Lijun,LYU Xuejiao,LI Dan,et al.Coordinated optimization strategy of multi-fault repair and recovery for distribution network with distributed generators[J].Automation of Electric Power Systems,2016,40(20):13-19.DOI:10.7500/AEPS20160116002.
[5]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 modle for distribution network containing distributed generators and improved greedy algorithm[J].Automation of Electric Power Systems,2013,37(24):23-30.
[6]王旭东,林济铿.基于分支定界的含分布式发电配网孤岛划分[J].中国电机工程学报,2011,31(7):16-20.WANG Xudong,LIN Jikeng.Island partition of the distribution system with distributed generation based on branch and bound algorithm[J].Proceedings of the CSEE,2011,31(7):16-20.
[7]HU Rui,HU Weibao,LI Pengfei,et al.A dynamic programming based method for optimizing power system restoration with high wind power penetration[C]//IEEEInternational Power Electronics and Motion Control Conference,May 22-26,2016,Hefei,China:2022-2027.
[8]刘志文,夏文波,刘明波.实现微网供电恢复的分布式电源自组网策略[J].电力系统自动化,2015,39(9):192-199.DOI:10.7500/AEPS20140522005.LIU Zhiwen,XIA Wenbo,LIU Mingbo.Distributed generator self-organized network strategy applied to microgrid applied to microgrid service restoration[J].Automation of Electric Power Systems,2015,39(9):192-199.DOI:10.7500/AEPS20140522005.
[9]侯宇翔,彭敏放,朱亮,等.考虑联络线转供及孤岛划分的配电网风险评估[J].电力自动化设备,2017,37(10):79-85.HOU Yuxiang,PENG Minfang,ZHU Liang,et al.Risk assessment for distribution network considering tie line transfer and island partition[J].Electric Power Automation Equipment,2017,37(10):79-85.
[10]庞清乐,高厚磊,李天友.基于负荷均衡的智能配电网故障恢复[J].电网技术,2013,37(2):342-348.PANG Qingle,GAO Houlei,LI Tianyou.Load balancing based fault service restoration for smart distribution grid[J].Power System Technology,2013,37(2):342-348.
[11]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.DOI:10.7500/AEPS20130506015.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.DOI:10.7500/AEPS20130506015.
[12]许志荣,杨苹,彭嘉俊,等.单三相混合供电制式多微网联网路径搜索及源荷储恢复策略[J].电力系统自动化,2017,41(16):80-87.DOI:10.7500/AEPS20161130023.XU Zhirong,YANG Ping,PENG Jiajun,et al.Reconnected path search and restoration strategy of sources-loads-storage system for multi-microgrids with single-phase/three-phase architecture[J].Automation of Electric Power Systems,2017,41(16):80-87.DOI:10.7500/AEPS20161130023.
[13]CHEN Dan,CHEN Xingying,LIU Jian,et al.Service restoration study of distribution system with distributed generators based on particle swarm optimization[C]//International Conference on Advanced Power System Automation and Protection,October 16-20,2011,Beijing,China:1176-1181.
[14]MISHRA R K,SWARUP K S.Smart distribution network restoration using multi agent system[C]//Power Systems Conference,December 9-21,2016,Bhubaneswar,India:1-6.
[15]王守相,李晓静,肖朝霞,等.含分布式电源的配电网供电恢复的多代理方法[J].电力系统自动化,2007,31(10):61-65.WANG Shouxiang,LI Xiaojing,XIAO Zhaoxia,et al.Multiagent approach for service restoration of distribution system containing distributed generations[J].Automation of Electric Power Systems,2007,31(10):61-65.
[16]郭玉天.含分布式电源的配电网重构研究[D].保定:华北电力大学,2013.GUO Yutian.Research on distribution networks reconfiguration with distributed generations[D].Baoding:North China Electric Power University,2013.
[17]王增平,张丽,徐玉琴,等.含分布式电源的配电网大面积断电供电恢复策略[J].中国电机工程学报,2010,30(34):8-14.WANG Zengping,ZHANG Li,XU Yuqin,et al.Service restoration strategy for blackout of distribution system with distributed generators[J].Proceedings of the CSEE,2010,30(34):8-14.
[18]刘蓓.智能配电网故障定位与故障恢复方法研究[D].长沙:湖南大学,2014.LIU Bei.Research on fault location and fault recovery for smart distribution networks[D].Changsha:Hunan University,2014.