【摘要】 合空载电力变压器时会产生数值相当大的励磁涌流 ,易造成变压器差动保护装置的误动作。针对这一问题 ,介绍了两种削弱励磁涌流的方法 :控制三相合闸时间或在变压器低压侧加装电容器。理论分析和实践均证明这两种方法是行之有效的 ,但利用控制三相合闸时间来削弱励磁涌流在实际应用中更具有潜力更多还原

【Abstract】 Transformer inrush currents are high magnitude currents generated when switching of no load transformer,and will cause protective relay mis operation.In order to eliminate inrush currents,two methods are discussed in this paper:by controlled switching and by implementing capacitors mounted directly on the low voltage side of a high voltage power transformer.Both Theoretical considerations and practical considerations can prove the two methods are effective,but the former has more potential in practice.更多还原