基于多代理技术的有源配电网供电恢复策略
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摘要
针对有源配电网发生故障后的快速供电恢复需求,提出基于多代理技术的自愈恢复系统。该系统采用分层协调的恢复模式,由下层区域代理为本区域发起供电恢复进程,上层馈线代理协调处理下层代理间的冲突。提出功率平衡度和转供容量裕度指标,基于该指标,当配电网故障隔离后,非故障失电馈线被分解为多个独立的区域,自愈系统能通过微网聚合恢复失电区域的供电,还可利用联络开关对孤岛区域进行负荷转供,达成综合恢复供电的目标。在供电恢复过程中,同时考虑馈线电压和电流的约束限制,保证系统在故障恢复后的安全稳定运行。在DIgSILENT软件上搭建含分布式电源的4馈线配电系统,仿真结果验证了所提策略的可行性和有效性。
Aiming at the fast service restoration requirement of active distribution network after fault,a self-healing service restoration system based on multi-agent technology is proposed. A hierarchical coordinated restoration mode is adopted in the system,and the regional service restoration process is initiated by the region agent of lower layer,while the conflict between the region agents is coordinated by the feeder agent of upper layer. The power balance and transfer capacity margin indexes are proposed,on this basis,the non-fault outage feeder is decomposed into several independent zones after the fault of distribution network is isolated,the self-healing system can restore service of outa-ge zone through microgrid aggregation,and utilize tie switch to transfer load of island zone,by which the service restoration can be comprehensively obtained. The voltage and current constraints of feeder are considered in the service restoration process to ensure the secure and stable system operation after fault restoration. A four-feeder distribution system with distributed generators is built in software of DIgSILENT,and the simulative results verify the feasibility and effectiveness of the proposed strategy.
Aiming at the fast service restoration requirement of active distribution network after fault,a self-healing service restoration system based on multi-agent technology is proposed. A hierarchical coordinated restoration mode is adopted in the system,and the regional service restoration process is initiated by the region agent of lower layer,while the conflict between the region agents is coordinated by the feeder agent of upper layer. The power balance and transfer capacity margin indexes are proposed,on this basis,the non-fault outage feeder is decomposed into several independent zones after the fault of distribution network is isolated,the self-healing system can restore service of outa-ge zone through microgrid aggregation,and utilize tie switch to transfer load of island zone,by which the service restoration can be comprehensively obtained. The voltage and current constraints of feeder are considered in the service restoration process to ensure the secure and stable system operation after fault restoration. A four-feeder distribution system with distributed generators is built in software of DIgSILENT,and the simulative results verify the feasibility and effectiveness of the proposed strategy.
引文
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[15] 杨丽君,张广超,吕雪姣,等.考虑可控负荷的含分布式电源配电网短时故障供电恢复[J].电力自动化设备,2016,36(11):11-17.YANG Lijun,ZHANG Guangchao,Lü Xuejiao,et al.Power restoration considering controllable load for short-time fault of distribution network with DGs[J].Electric Power Automation Equipment,2016,36(11):11-17.
[16] GHORBANI M J,CHOUDHRY M A,FELIACHI A.A multiagent design for power distribution systems automation[J].IEEE Transac-tions on Smart Grid,2015,7(1):329-339.
[17] CHEN C,WANG J,QIU F,et al.Resilient distribution system by microgrids formation after natural disasters[J].IEEE Transactions on Smart Grid,2016,7(2):958-966.
[18] HAFEZ A A,OMRAN W A,HEGAZY Y G.A decentralized technique for autonomous service restoration in active radial distribution networks[J].IEEE Transactions on Smart Grid,2018,9(3):1911-1919.
[19] 李振坤,周伟杰,纪卉,等.主从控制模式下有源配电网供电恢复研究[J].电网技术,2014,38(9):2575-2581.LI Zhenkun,ZHOU Weijie,JI Hui,et al.Service restoration of distribution system containing DG under master-slave control mode[J].Power System Technology,2014,38(9):2575-2581.
[20] DAS D.Reconfiguration of distribution system using fuzzy multi-objective approach[J].International Journal of Electrical Power & Energy Systems,2006,28(5):331-338.
[21] 易海川,张彼德,王海颖,等.提高DG接纳能力的配电网动态重构方法[J].电网技术,2016,40(5):1431-1436.YI Haichuan,ZHANG Bide,WANG Haiying,et al.Distribution network dynamic reconfiguration method for improving distribution network's ability of accepting DG[J].Power System Technology,2016,40(5):1431-1436.
[2] 李春燕,杨强,魏蔚,等.计及风速与负荷相关性的配电网重构方法[J].电力自动化设备,2016,36(2):148-153.LI Chunyan,YANG Qiang,WEI Wei,et al.Distribution nework recon-figuration considering correlation between wind-speed and load[J].Electric Power Automation Equipment,2016,36(2):148-153.
[3] LI J,MA X Y,LIU C C,et al.Distribution system restoration with microgrids using spanning tree search[J].IEEE Transactions on Power Systems,2014,29(6):3021-3029.
[4] 周湶,解慧力,郑柏林,等.基于混合算法的配电网故障重构与孤岛运行配合[J].电网技术,2015,39(1):136-142.ZHOU Quan,XIE Huili,ZHENG Bolin,et al.Hybrid algorithm based coordination between distribution network fault reconfiguration and islanding operation[J].Power System Technology,2015,39(1):136-142.
[5] 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.
[6] LIN Jikeng,WANG Xudong,WANG Peng,et al.Two-stage method for optimal island partition of distribution system with distributed generations[J].IET Generation Transmission & Distribution,2012,6(3):218-225.
[7] 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.
[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.LIU Zhiwen,XIA Wenbo,LIU Mingbo.Distributed generator self-organized network strategy applied to microgrid service restoration[J].Automation of Electric Power Systems,2015,39(9):192-199.
[9] 郑兰,别朝红,王秀丽.一种快速启发式配电网故障恢复算法[J].电力自动化设备,2004,24(2):16-19.ZHENG Lan,BIE Zhaohong,WANG Xiuli.A fast heuristic service restoration method for distribution network[J].Electric Power Automation Equipment,2004,24(2):16-19.
[10] 欧帝宏,陈皓勇,荆朝霞.基于协同进化算法的配电网络重构方案[J].电力自动化设备,2012,32(7):108-113.OU Dihong,CHEN Haoyong,JING Zhaoxia.Distribution network reconfiguration based on co-evolution algorithm[J].Electric Power Automation Equipment,2012,32(7):108-113.
[11] 吴登国,李晓明.基于极限学习机的配电网重构[J].电力自动化设备,2013,33(2):47-51.WU Dengguo,LI Xiaoming.Distribution grid reconfiguration based on extreme learning machine[J].Electric Power Automation Equipment,2013,33(2):47-51.
[12] ZIDAN A,EL-SAADANY E F.A cooperative multiagent framework for self-healing mechanisms in distribution systems[J].IEEE Tran-sactions on Smart Grid,2012,3(3):1525-1539.
[13] ERIKSSON M,ARMENDARIZ M,VASILENKO O O,et al.Multi-agentbased distribution automation solution for self-healing grids[J].IEEE Transactions on Industrial Electronics,2015,62(4):2620-2628.
[14] 李红伟,孔冰,李超.基于网损最小的配电网多代理复电系统设计[J].电力自动化设备,2014,34(4):155-161.LI Hongwei,KONG Bin,LI Chao.Design of multi-agent distribution network restoration system based on minimum grid loss[J].Electric Power Automation Equipment,2014,34(4):155-161.
[15] 杨丽君,张广超,吕雪姣,等.考虑可控负荷的含分布式电源配电网短时故障供电恢复[J].电力自动化设备,2016,36(11):11-17.YANG Lijun,ZHANG Guangchao,Lü Xuejiao,et al.Power restoration considering controllable load for short-time fault of distribution network with DGs[J].Electric Power Automation Equipment,2016,36(11):11-17.
[16] GHORBANI M J,CHOUDHRY M A,FELIACHI A.A multiagent design for power distribution systems automation[J].IEEE Transac-tions on Smart Grid,2015,7(1):329-339.
[17] CHEN C,WANG J,QIU F,et al.Resilient distribution system by microgrids formation after natural disasters[J].IEEE Transactions on Smart Grid,2016,7(2):958-966.
[18] HAFEZ A A,OMRAN W A,HEGAZY Y G.A decentralized technique for autonomous service restoration in active radial distribution networks[J].IEEE Transactions on Smart Grid,2018,9(3):1911-1919.
[19] 李振坤,周伟杰,纪卉,等.主从控制模式下有源配电网供电恢复研究[J].电网技术,2014,38(9):2575-2581.LI Zhenkun,ZHOU Weijie,JI Hui,et al.Service restoration of distribution system containing DG under master-slave control mode[J].Power System Technology,2014,38(9):2575-2581.
[20] DAS D.Reconfiguration of distribution system using fuzzy multi-objective approach[J].International Journal of Electrical Power & Energy Systems,2006,28(5):331-338.
[21] 易海川,张彼德,王海颖,等.提高DG接纳能力的配电网动态重构方法[J].电网技术,2016,40(5):1431-1436.YI Haichuan,ZHANG Bide,WANG Haiying,et al.Distribution network dynamic reconfiguration method for improving distribution network's ability of accepting DG[J].Power System Technology,2016,40(5):1431-1436.
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