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通过对Scott变压器的理论分析,提出利用在线监测原、次边电压和电流,实时计算绕组的短路电抗来判断Scott变压器绕组变形的方法。仿真计算表明,变压器运行条件和外部因素的变化对短路电抗测量影响甚小。该方法可以为运行中的Scott变压器绕组提供准确的监测信息。
Based on the theoretical analysis of Scott transformer, a method of judging Scott transformer winding deformation by using the on-line monitoring of the primary and secondary voltage and current to calculate the short-circuit reactance of the winding in real time is proposed. Simulation results show that the changes of transformer operating conditions and external factors have little effect on short-circuit reactance measurement. This method provides accurate monitoring of the running Scott transformer windings.