计及电压稳定性约束的海上风电场集群VSC-MTDC组网优化方法  

Optimization method of VSC-MTDC network for offshore wind farms cluster considering voltage stability constraints

作　　者：王振帅 黄玲玲 王启国 刘阳 贾锋 WANG Zhenshuai;HUANG Lingling;WANG Qiguo;LIU Yang;JIA Feng(School of Electrical Engineering,Shanghai University of Electric Power,Shanghai 200090,China.;School of Mechatronic Engineering and Automation,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海电力大学电气工程学院,上海200090 [2]上海大学机电工程与自动化学院,上海200444

出　　处：《电测与仪表》2024年第4期141-148,共8页Electrical Measurement & Instrumentation

基　　金：国家电网有限公司科技项目(4000-201999350A-0-0-00)。

摘　　要：海上风电场将朝深远海、集群化方向发展,多端柔性直流输电技术(voltage source converter based multi-terminal direct current,VSC-MTDC)对远距离、大规模海上风电接入系统表现出明显优势,因此有必要对海上风电场集群VSC-MTDC组网优化进行研究。考虑到风电场集群出力的聚集效应会影响电气设备的容量配置,以及陆上电网的公共连接点(point of common coupling,PCC)电压稳定性对大规模风电接入容量的影响。文中推导了PCC点电压稳定性指标,并引入了“N+”原则对电气设备进行容量配置,提出一种计及“N+”原则和PCC点电压稳定性的海上风电场集群VSC-MTDC组网优化方法。采用改进的NSGAⅡ算法对海上风电场集群VSC-MTDC系统进行分析。算例结果表明,按“N+”原则进行容量配置可以更好提高收益,考虑PCC点电压稳定性虽然会增加投资成本,但能够提高PCC点电压稳定性。The offshore wind farms will toward into the deep sea and clustering direction,voltage source converter based multi-terminal direct current(VSC-MTDC)shows advantages for long-distance,large-scale offshore wind power system,it is necessary to research the optimization method of VSC-MTDC network for offshore wind farm cluster.Considering that the aggregation effect of wind farms cluster will affect the capacity of electrical equipment and the influence of the voltage stability of point of common coupling(PCC)on the access capacity of large-scale wind power.This paper derives a PCC voltage stability index,introduces the concept of"N+"criterion to configure the capacity of electrical equipment,and proposes an optimization method of VSC-MTDC network of offshore wind farms cluster considering voltage stability constraints and"N+"criterion.The improved NSGAⅡalgorithm is used to analyze the offshore wind farms cluster.The example results show that the capacity allocation according to"N+"criterion has the best economic efficiency,and the PCC voltage stability constraint can improve the voltage stability of the PCC,although it will increase the investment.

关 键 词：“N+”原则 电压稳定性 VSC-MTDC 海上风电场集群 

分 类 号：TM614[电气工程—电力系统及自动化]