SVC对风电机组暂态特性影响的分析

为改善异步机风电场暂态电压的稳定性,在电力系统仿真软件PSASP中建立了基于静止无功补偿器(SVC)补偿型发电机组的模型,仿真计算在一个由5台风电机组构成的风电系统中进行,对采用SVC装置的异步风电机组暂态特性进行分析。研究结果表明,当接入风电的地区电网发生三相短路大扰动故障时,异步机风电场的暂态电压失稳,采用SVC后,它能够有效帮助风电机组在系统发生大扰动故障后恢复电压,SVC能改善风电场的暂态电压稳定性,确保风电机组连续运行及电网的安全稳定。

Analysis of SVC Impact to the Transient Characteristics of Wind Turbines

To improve the transient voltage stability of asynchronous machine of wind power station,the compensation-type generator model based on static var compensator(static var compensator,SVC) in wind power system of simulation software PSASP is established,based on the simulation calculation in the wind power system consisting of 5 wind turbines,the transient performance of asynchronous wind power station with the use of SVC is analyzed.The research result shows that the transient voltage of asynchronous machine of wind power station is instability as occurring the failures of three-phase short-circuit large disturbance at local distribution network of wind power,after using SVC,it can effectively help the wind power turbines to resume voltage in the system after a large disturbance failures,SVC can improves the transient voltage stability of the wind power station to ensure the continuous operation of wind turbines and the security and stability of network.