静止无功补偿器对感应电动机负荷电压稳定性的影响

Impact of Static Var Compensator on Voltage Stability of Induction Motor Load

以简单的两节点系统为研究对象,采用考虑机电暂态过程的三阶感应电动机负荷模型,详细分析了静止无功补偿器(SVC)在小扰动和大扰动情况下对系统电压稳定性的影响。仿真结果表明,在小扰动情况下安装SVC可以提高感应电动机负荷的最大负载转矩和电压水平;在大扰动情况下能够减小故障对暂态电压稳定产生的影响,并且能够延长暂态电压稳定的极限切除时间,提高系统的暂态稳定性。

Taking a simple two- node power system as the subject and using the third -order model of induction rotator load with the electromeehanical transient process, the influences of static vat compensator （SVC） on system voltage ,stability are analyzed in the case of small disturbance and large disturbance. The simulation results show that installing SVC can increasc the maximum load torque and voltage level in the ease of small disturbance and can decrease the influence of fault on transient voltage stability in the case of large disturbance, and can extend the critical clearing time of transient voltage stability and enhance the transient stability.