【摘要】 分析了变速恒频控制的双馈异步风力发电机组并网运行时由于从电网吸收的无功功率变化引起的电网电压波动问题给电网造成的电压波动和暂态稳定等电能质量问题、给并网运行的风机造成的并网启动时间延长和非正常脱网问题等负面影响以及通过并联电力电容器的投切对风力发电机组实行就地无功补偿的方法.更多还原

【Abstract】 The fluctuation of the voltage of the grid caused by the change of the absorption of the reactive power from the grid of the doubly fed induction wind turbine operating with grid was analysed.The fluctuation of the voltage of the grid have several negative impact,such as decreasing the power quality of the grid,delaying the starting time of the wind turbine and detaching the grid of the wind turbine abnormally.The method of the implementation of the local reactive compensation to increase the stability of the grid was also analyzed.更多还原