主动配电网宽适应性潮流灵敏度分析模型  

Power Flow Sensitivity Analysis Model with Wide Adaptability for Active Distribution Networks

作　　者：刘琪[1] 王守相[1] 吉兴全 LIU Qi;WANG Shouxiang;JI Xingquan(Key Laboratory of the Ministry of Education on Smart Power Grids(Tianjin University),Tianjin 300072,China;College of Electrical Engineering and Automation,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]智能电网教育部重点实验室(天津大学),天津市300072 [2]山东科技大学电气与自动化工程学院,山东省青岛市266590

出　　处：《电力系统自动化》2020年第13期81-88,共8页Automation of Electric Power Systems

基　　金：国家重点研发计划资助项目(2018YFB0904700)。

摘　　要：分布式发电、储能及柔性负荷在配电网的大量接入引起配电网潮流的频繁变化,构建准确、简洁的节点注入功率与运行参数的函数模型对主动配电网的规划和运行至关重要。结合配电网辐射状拓扑结构,提出了一种对节点注入功率变化具有宽适应性的潮流灵敏度分析模型。所提灵敏度分析模型具体包含节点注入功率对线路损耗的二次形式的灵敏度模型、节点注入功率对节点电压的线性形式的灵敏度模型和节点注入功率对线路潮流的二次形式的灵敏度模型。对灵敏度模型应用于存在弱环网的配电系统时的有效性进行了分析,利用IEEE 33节点配电系统和含环网的IEEE 123节点配电系统进行仿真分析,仿真结果证明了所提灵敏度模型的有效性。The large-scale integration of distributed generations,energy storage systems and flexible loads in the distribution network causes frequent changes in power flows of the distribution network.It is very important for the planning and operation of active distribution networks to build an accurate and concise function model of node injection power and operation parameters.Combined with the radial topology of the distribution network,a power flow sensitivity analysis model with wide adaptability to the change of node injection power is proposed.The proposed model includes a quadratic sensitivity model of nodal power injections to line losses,a linear sensitivity model of nodal power injections to nodal voltages,a quadratic sensitivity model of nodal power injections to branch power.The effectiveness of the sensitivity model applied to the distribution system with weak ring network is analyzed.The IEEE 33-bus distribution system and the IEEE 123-bus distribution system with ring network are used for simulation analysis.The simulation results prove the effectiveness of the proposed sensitivity model.

关 键 词：主动配电网 线路功率 线路损耗 节点电压 灵敏度模型 

分 类 号：TM73[电气工程—电力系统及自动化]