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1.现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学),吉林省吉林市 132012
2.国网经济技术研究院有限公司,北京市 102209
3.中国能源建设集团江苏省电力设计院有限公司,江苏省南京市 211102
Received:10 April 2020,
Revised:2020-08-26,
Published Online:01 October 2020,
Published:25 February 2021
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李翠萍,东哲民,李军徽等.配电网分布式储能集群调压控制策略[J].电力系统自动化,2021,45(4):133-141.
LI Cuiping,DONG Zhemin,LI Junhui,et al.Control Strategy of Voltage Regulation for Distributed Energy Storage Cluster in Distribution Network[J].Automation of Electric Power Systems,2021,45(4):133-141.
李翠萍,东哲民,李军徽等.配电网分布式储能集群调压控制策略[J].电力系统自动化,2021,45(4):133-141. DOI: 10.7500/AEPS20200410005.
LI Cuiping,DONG Zhemin,LI Junhui,et al.Control Strategy of Voltage Regulation for Distributed Energy Storage Cluster in Distribution Network[J].Automation of Electric Power Systems,2021,45(4):133-141. DOI: 10.7500/AEPS20200410005.
考虑到分布式电源与电动汽车大规模接入配电网后造成节点电压越限与储能系统运行经济性有待提高等问题,文中提出一种分布式储能集群调压控制策略。首先,通过构建基于电气距离的模块度指标形成配电网电压控制集群;然后,依据越限严重集群优先原则,确定各集群储能调节功率,并根据节点电压灵敏度对群内各储能进行功率分配;在计及配电系统安全、储能系统运行等约束条件下,构建集群经济调压模型,分析电压允许偏差范围内储能系统运行套利收益与网损收益的变化趋势,确定了各集群储能最优时序出力。仿真结果表明,所提集群调压控制策略可以有效消除节点电压越限,提升储能系统运行经济性。
Considering that the distributed generators and electric vehicles are connected to the distribution network on a large scale
the node voltage limit will be exceeded and the operation economy of the energy storage system needs to be improved. A voltage regulation control strategy for distributed energy storage clusters is proposed. First
the voltage control cluster of the distribution network is formed by constructing a modularity index based on electrical distance. Then
according to the priority principle of over-limit severe cluster
the energy storage regulating power of each cluster is determined
and the power of each energy storage in the cluster is distributed according to the node voltage sensitivity. By taking into account the constraints of the safety of the distribution system and the operation of the energy storage system
an economic cluster voltage regulation model is constructed. The variation trend of the network loss return and operating arbitrage return of the energy storage system within the allowable voltage deviation range is analyzed
and the optimal timing output for the energy storage in each cluster is determined. Simulation results show that the proposed control strategy for the cluster voltage regulation can effectively eliminate the node voltage over-limit and improve the operation economy of the energy storage system.
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