大型并网风电场、光伏电站与直流系统交互影响分析  

ANALYSIS ON INTERACTION AFFECT OF LARGE SCALE GRID-CONNECTED WIND FARM,PV PLANT AND HVDC SYSTEMS

作　　者：苗淼[1,2] 李兴源[1] 王曦[1] 

机构地区：[1]四川大学电气信息学院,成都610065 [2]国网青海省电力公司经济技术研究院,西宁810008

出　　处：《太阳能学报》2015年第4期878-885,共8页Acta Energiae Solaris Sinica

基　　金：国家重点基础研究发展(973)计划(2013CB228204);国家自然科学基金重点项目(51037003);国家高技术研究发展(863)计划(2011AA05A119);国家电网公司科技项目(522830140003)

摘　　要：利用有效相对增益方法分析电气距离、光伏出力大小对青海海西电网大型并网风电场、光伏电站、柴拉直流系统间交互作用的影响。首先介绍有效相对增益矩阵分析交互作用的算法,然后将大型风电场、光伏电站进行等值,以便进行暂态仿真分析。最后搭建青海海西电网暂态仿真模型,计算风电场、光伏电站、柴拉直流系统间有效相对增益矩阵。结果表明,3个系统间电气距离越小、交互影响越大,同时在地区电源总出力一定时,随着常规电源出力的减小、光伏电站出力相应增大,系统间的交互影响越大,仿真分析验证了所提方法的准确性。The interaction between wind farm, PV photovohaic plant and HVDC in West Qinghai was analyzed by Effective Relative Gain Array （ERGA）. Firstly, the ERGA was introduced to analysis interaction between controllers, and then the equivalent model of wind farm and plant were proposed to make the simulation more convenient. Finally the whole model of West Qinghai power grid was set up and ERGA between wind farm, PV plant and HVDC system was calculated. The simulation results illustrated that shorter distance between three systems and larger ratio of PV capacity to total capacity of local power will cause more interaction problems, which verify the validity of the ERGA result.

关 键 词：风电场 光伏电站 高压直流输电系统 交互作用 有效相对增益矩阵 

分 类 号：TM71[电气工程—电力系统及自动化]