基于节点电气耦合连接度的配电网启发式孤岛划分
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摘要
分布式电源(DG)供电能力和周围负荷需求需要进行功率匹配,以保证故障后孤岛划分区域供电的稳定性和良好的电能质量。通过采集配电网中的量测终端数据,在研究基于单元融合法的配电网孤岛划分的基础上,提出利用节点电气耦合连接度指标筛选重要负荷节点,使得关键负荷单元能够得到优先融合,在较短的时间内,制定出孤岛划分的最优方案。仿真数据表明计及节点电气耦合连接度的配电网孤岛划分算法能够较为有效地融合配电网中一些关键节点,使配电网故障后,能够借助分布式电源的供电能力为非故障区域的负荷提供持续的供电服务。
The power supply capacity of distributed generation has to carry out power matching with the periphery load requirements to ensure the stability of power supply in island partition and the good power quality after faults. Via the acquisition of the measurement terminal data in distribution network and on the basis of research on the island partition of distribution network of units merging algorithm, this paper proposed to carry out the important load nodes index selection with the consideration of node electrical coupling connectivity to make the key load units get priority merging, so as to obtain the optimal island partition scheme in a relatively short period of time. The simulation data shows that the island partition algorithm in distribution network based on node electrical coupling connectivity could effectively merge some key nodes in distribution network, which could provide continuous power supply services for the loads in non-fault regions with the help of distributed generation after the power system failures.
The power supply capacity of distributed generation has to carry out power matching with the periphery load requirements to ensure the stability of power supply in island partition and the good power quality after faults. Via the acquisition of the measurement terminal data in distribution network and on the basis of research on the island partition of distribution network of units merging algorithm, this paper proposed to carry out the important load nodes index selection with the consideration of node electrical coupling connectivity to make the key load units get priority merging, so as to obtain the optimal island partition scheme in a relatively short period of time. The simulation data shows that the island partition algorithm in distribution network based on node electrical coupling connectivity could effectively merge some key nodes in distribution network, which could provide continuous power supply services for the loads in non-fault regions with the help of distributed generation after the power system failures.
引文
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[11]谭玉东,李欣然,蔡晔,等.基于电气距离的复杂电网关键节点识别[J].中国电机工程学报,2014,34(1):146-152.
[2]卢志刚,董玉香.含分布式电源的配电网故障恢复策略[J].电力系统自动化,2007,31(1):89-92.
[3]丁磊,潘贞存,丛伟.基于有根树的分布式发电孤岛搜索[J].中国电机工程学报,2008,28(25):62-
[4]向月,刘俊勇,姚良忠,等.故障条件下含分布式电源配电网的孤岛划分与重构优化策略研究[J].电网技术,2013,37(4):1025-1032.
[5]刘传铨,张焰.计及分布式电源的配电网供电可靠性[J].电力系统自动化,2007,31(22):46-49.
[6]王旭东,林济铿.基于分支定界的含分布式发电配电网孤岛划分[J].中国电机工程学报,2011,31(7):16-20.
[7]王旭东,林济铿.含分布式发电配电系统的孤岛划分[J].中国科学:技术科学,2011,41(5):693-702.
[8]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.
[9]PHAM T T H,BESANGER Y,HADJSAID N.New challenges in power system restoration with large scale of dispersed generation insertion[J].IEEE Transactions on Power Systems,2009,24(1):398-406.
[10]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.
[11]谭玉东,李欣然,蔡晔,等.基于电气距离的复杂电网关键节点识别[J].中国电机工程学报,2014,34(1):146-152.