永磁直驱风机风电场并网电压稳定性及其无功补偿分析  

Analysis of Grid-Connected Voltage Stability of Permanent Magnet Direct-Drive Fans Wind Farms and Research on Reactive Power Compensation

作　　者：李京京 王蕴敏 陈阳[1] LI Jingjing;WANG Yunmin;CHEN Yang(College of Electricity,Inner Mongolia University of Technology,Hohhot 010080,China;Inner Mongolia Enterprise Key Laboratory of Smart Grid Simulation of Electrical Power System,Hohhot 010020,China;Inner Mongolia Power Research Institute,Hohhot 010020,China;College of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学电力学院,呼和浩特010080 [2]内蒙古自治区电力系统智能化电网仿真企业重点实验室,呼和浩特010020 [3]内蒙古电力科学研究院,呼和浩特010020 [4]内蒙古工业大学能源与动力工程学院,呼和浩特010051

出　　处：《内蒙古电力技术》2022年第1期2-9,共8页Inner Mongolia Electric Power

基　　金：内蒙古自治区科技项目“基于信息物理系统的智慧能源综合管控技术研究与工程应用”(2019GG375)。

摘　　要：针对风电场并网容量的逐年增长对电力系统稳定性产生的影响,以及大规模风电场接入局部电网带来的电压稳定问题,建立了永磁直驱风机风电场并入交流电网的电磁暂态等值模型,分别从静态和动态角度分析了并网点短路比、联络线等效电阻与电抗比值(X_(L)/R_(L))对并网点电压稳定性的影响,并采用机端并入并联电容器和并网点并入STATCOM方式进行联合无功补偿,时域仿真结果表明,该补偿方式能够有效提高并网点电压的暂态稳定性。In view of the impact of the year-by-year growing grid-connected capacity of wind farms on the stability of the power system, and the voltage stability problems brought by the connecting of large-scale wind farms to local grid, the electromagnetic transient equivalent model of permanent magnet direct-drive(PMD) wind farms connected to the AC grid is established, and the effects of short-circuit ratio(SCR) and the ratio of equivalent resistance and reactance of contact line(X_(L)/R_(L)) on the voltage stability of the grid connection point are analyzed respectively from static and dynamic perspectives,and the combined reactive power compensation is carried out by shunt capacitor STATCOM at the grid connection point.The time domain simulation results show that the compensation method can effectively improve the transient stability of the parallel network voltage.

关 键 词：永磁直驱风机风电场 短路比 电压稳定 无功补偿 

分 类 号：TM712[电气工程—电力系统及自动化]