国家风光储示范电站黑启动中风机启动失败原因及对策分析

Cause of generator startup failure during black-start of national wind/photovoltaic/energy-storage pilot station and its countermeasure

对风光储电站黑启动的试验过程中风机并网过程进行了分析。首先,重点分析了风机启动造成储能变流器跳闸的原因,并对风机参与黑启动的过程进行了仿真验证,指出由于风机缺少恰当的软启动过程,导致启动过电流,使得黑启动失败;然后,提出了风机参与黑启动过程中直流电压软启动的控制策略;最后,通过仿真对所提控制策略进行了验证,表明所提方法能够很好地避免风机变流器的启动过电流问题。

The grid-connection process of wind turbine during the black-start of a wind / photovoltaic / energystorage station is analyzed. The cause of energy-storage converter trip due to the wind turbine startup is emphatically analyzed and the black-start process with wind turbine is simulated,which verifies that,the wind turbine startup overcurrent due to the lack of proper soft-startup process results in the black-start failure. The control strategy for the soft-startup of DC voltage is proposed for the black-start with wind turbine,which is verified by simulation,showing that the startup overcurrent of wind turbine converter is effectively avoided.