试论变压器试验后剩磁的消除方法

摘 要：阐述了大型变压器在预防性后，由于试验设备使用不当，或试验顺序不正确，会在变压器铁芯内造成大量剩磁的存在，给变压器其他试验及倒送电造成冲击影响。本文主要讨论剩磁产生的原因及消除剩磁的方法。目前在各个厂家中采取了很多不同的措施,这里对采用的几个措施进行了原理上的阐述,并对它们进行了一些比较分析。

关键词：变压器冲击；励磁涌流；预防性试验；剩磁；消磁

[Abstract] In this paper, the power transformer in the preventive, due to improper use of testequipment, test or not in the right order, will cause a large number of transformer core remanencein the presence of the impact, influence to other test and inverse power transmission transformer.This paper mainly discusses the reason of the remanence remanence and elimination method. Atpresent in the various manufacturers to take a lot of different measures, here the principle iselaborated on several measures adopted, and gives a comparative analysis.

[Keywords] transformer impulse; excitation inrush current; preventive test remanent;magnetization demagnetization