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发电机组并网瞬间从系统大量抢无功功率,引发本侧母线电压和相邻并网其他机组间无功功率的大幅波动等现象。文中主要从理论和无功功率大幅波动现象进行分析,发现二滩水电站同期装置的电压差、励磁调差系数、机端初始电压等参数的定值整定不合理,从而提出对上述参数的一些整定策略。
Generators instantaneously grab a large number of reactive power from the system instantaneously, causing large fluctuations in the reactive power between the bus voltage on the side and other units adjacent to the grid. The paper mainly analyzes the phenomenon of large fluctuations of theoretical and reactive power, and finds that the setting of parameters such as voltage difference, excitation tuning coefficient and initial voltage at the same period of Ertan Hydropower Station is unreasonable. Therefore, some adjustments of these parameters Strategy.