同步发电机准同期运行输出端电压控制仿真

Synchronous generator quasi-synchronous operation output voltage control simulation

同步发电机准同期运行输出端电压控制是电力研究领域中的关键要素。针对当前方法不能够保证输出端电压稳定裕度和电压控制正确性差的问题,提出基于系统等值模型的发电机输出端电压控制方法。利用电流和电压变量计算同步发电机的负荷节点电压,采集等值电势数据,利用等值电势和等值阻抗构建等值模型,分析输出端电压的影响因子,并选择危险节点和控制节点,构建同步发电机输出端电压控制模型,最终实现同步发电机准同期运行输出端电压的控制。实验结果表明,提出方法不仅能够保证输出端电压的稳定裕度,还能够正确完成对输出端电压的控制,证明了该方法的可靠性。

Control of output terminal voltage of quasi-synchronous operation of synchronous generator is a key factor in research field of electric power.Current method cannot guarantee stability margin of the output terminal voltage.Validity of voltage control is poor.In order to solve the problems,we present a new control method based on e-quivalent system model.Firstly,our research used variable of current and voltage to calculate load node voltage of the synchronous generator and collected equivalent potential data.Then,the research built equivalent modelvia e-quivalent potential and impedance.Influence factor of the output terminal voltage was analyzed and dangerous node and control node were selected to build control model of the output terminal voltage of synchronous generator.Thus,we achieved the control of output terminal voltage.Simulation results show that the method can not only guarantee the stability margin of output terminal voltage,but also control the voltage correctly,which proves reliability of the method.