基于柔性多状态开关的混合配电网能量管理策略与控制方法  

Energy Management Strategy and Control Method of Hybrid Distribution Network Based on Soft Open Point

作　　者：袁宇波 张宸宇 袁晓冬 杨景刚 史明明 张学[2] YUAN Yubo;ZHANG Chenyu;YUAN Xiaodong;YANG Jinggang;SHI Mingming;ZHANG Xue(Electric Power Research Institute of State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 211103,China;Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]国网江苏省电力有限公司电力科学研究院,江苏省南京市211103 [2]中国科学院电工研究所,北京市100190

出　　处：《电力系统自动化》2021年第8期60-67,共8页Automation of Electric Power Systems

基　　金：国家重点研发计划资助项目(2017YFB0903300);国网江苏省电力有限公司科技项目(交直流多微网互联协调运行控制技术研究,J2019133)资助。

摘　　要：基于柔性多状态开关(SOP)的交直流混合配电网能量管理控制方法是保证其高效、可靠、灵活和可控性的关键技术挑战。为了减少SOP非必要交换功率,并最大限度地利用可再生能源,提出了一种新的能量管理策略。该策略优先考虑可再生能源输出功率的使用,并辅以交直流子网储能的相互支持。交直流混合配电网并网运行划分为20种运行模式。基于能量管理目标生成了不同运行模式下交直流子网储能单元参考指令。针对传统交直流母线并联变换器的下垂控制电压压降和环流问题,提出了交流母线电压压降补偿方法和环流抑制方法。最后,通过仿真软件建立了基于SOP互联的交直流混合配电网仿真平台,仿真结果验证了该平台的可行性和有效性。The energy management and control method of the AC/DC hybrid distribution network based on the soft open point(SOP)is a key technical challenge to ensure its high efficiency,reliability,flexibility and controllability.In order to reduce the unnecessary switching power of SOP and maximize the use of renewable energy,a new energy management strategy is proposed.The strategy gives priority to the use of renewable energy output power,and is supplemented by the mutual support of the AC/DC sub network energy storage.The grid-connected operation of the AC/DC hybrid distribution network is divided into twenty operation modes.Based on the energy management objectives,the reference instructions of the AC/DC sub network energy storage units in different operation modes are generated.Aiming at the problems of traditional droop control voltage drop and circulating current of parallel converters with the common AC/DC bus,the AC bus voltage drop compensation method and circulating current suppression method are given.Finally,a simulation platform of the AC/DC hybrid distribution network based on SOP interconnection is established by simulation software.The simulation results verify the feasibility and effectiveness of the platform.

关 键 词：柔性多状态开关 交直流混合配电网 并网运行 能量管理 环流抑制 

分 类 号：TM721.3[电气工程—电力系统及自动化] TM73