多电压等级配电系统智能软开关协同配置  

Coordinated Allocation of SOP in Multi-voltage Distribution Network

作　　者：王成山[1] 王瑞[1] 冀浩然 杨鹏 赵亮 宋关羽 吴建中[4] 李鹏[1] WANG Chengshan;WANG Rui;JI Haoran;YANG Peng;ZHAO Liang;SONG Guanyu;WU Jianzhong;LI Peng(Key Laboratory of Smart Grid of Ministry of Education(Tianjin University),Nankai District,Tianjin 300072,China;State Grid Hebei Electrci Power Co.Ltd.,Shijiazhuang 050000,Hebei Province,China;State Grid Tianjin Electric Power Company,Hebei District,Tianjin 300010,China;School of Engineering,Cardiff University,Cardiff CF243AA,UK)

机构地区：[1]智能电网教育部重点实验室(天津大学),天津市南开区300072 [2]国网河北省电力有限公司,河北省石家庄市050000 [3]国网天津市电力公司,天津市河北区300010 [4]卡迪夫大学工程学院,英国卡迪夫CF243AA

出　　处：《中国电机工程学报》2024年第17期6831-6843,I0011,共14页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家自然科学基金项目(U22B20114,52277117)。

摘　　要：配电网逐步发展成为光伏、电动汽车等新型源荷的主要承载平台,面临的电压越限和线路过载等问题逐步加剧。柔性配电装置具有良好的调控能力,成为提高配电网运行灵活性的有效手段。已有的柔性化升级主要面向中压或低压配电网,多电压等级配电网柔性互联的潜力被忽视。因此,该文开展多电压等级配电系统智能软开关协同配置方法研究。首先,提出多电压等级配电系统智能软开关协同配置策略;其次,在计及源荷不确定性影响下,考虑源荷典型场景的概率化波动,建立多电压等级配电系统智能软开关协同配置模型。最后,为实现大规模优化配置模型的可靠收敛,采用凸差规划算法进行求解。选取实际配电网算例对优化配置模型和求解算法进行验证,结果表明,所提方法可以有效解决多电压等级配电系统智能软开关协同配置问题,支撑配电网承载高比例新型源荷,在提高系统运行安全性的同时具有更好的经济效益。Distribution networks are gradually developing into the main platform for the accessibility of photovoltaics(PVs)and electric vehicles(EVs).The issues of voltage violation and line overload in distribution networks are progressively worsening.Flexible distribution devices offer fine regulation capability and become an effective means to improve operational flexibility.The existing studies of flexible reinforcement are mainly focusing on medium-or low-voltage distribution networks individually,whereas the potential for flexible interconnection of multi-voltage distribution network(MVDN)has been overlooked.Therefore,this paper conducts research on the coordinated allocation method of soft open points(SOPs)in MVDN.First,the allocation strategy of SOP in MVDN is proposed.Then,to tackle the impact of source-load uncertainty,a coordinated allocation model of SOP in MVDN is established considering the probabilistic fluctuations of typical scenarios.Finally,to achieve convergence of the optimization model,difference-of-convex programming algorithm is developed for solution.The SOP allocation model and solution algorithm are validated based on a practical distribution network.The results show that the proposed method can effectively formulate SOP allocation strategies in MVDN.The configuration of multi-voltage flexible interconnections based on SOPs enables the distribution network to host large-scale PVs and EVs,and improves the operation security and economic benefits.

关 键 词：多电压等级配电网 智能软开关 源荷不确定性 凸差规划 

分 类 号：TM71[电气工程—电力系统及自动化]