Analysis of Fault Due to Different Grades of Tap-changers for Distribution Transformers in Parallel Operation

LIU Dong-qi

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Analysis of Fault Due to Different Grades of Tap-changers for Distribution Transformers in Parallel Operation

更新时间：2025-04-26

- Analysis of Fault Due to Different Grades of Tap-changers for Distribution Transformers in Parallel Operation
- High VoltageApparatus Vol. 45, Issue 2, Pages: 124-125+129(2009)
- 作者机构：
  
  山东德州供电公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM421
- Published：2009
- 稿件说明：
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[1]刘东旗.并列运行配电变压器分接开关异位时引发的事故分析[J].高压电器,2009,45(02):124-125+129.

LIU Dong-qi. Analysis of Fault Due to Different Grades of Tap-changers for Distribution Transformers in Parallel Operation[J]. High voltageapparatus, 2009, 45(2): 124-125+129.
[1]刘东旗.并列运行配电变压器分接开关异位时引发的事故分析[J].高压电器,2009,45(02):124-125+129. DOI：

LIU Dong-qi. Analysis of Fault Due to Different Grades of Tap-changers for Distribution Transformers in Parallel Operation[J]. High voltageapparatus, 2009, 45(2): 124-125+129. DOI：

摘要

为保证并列配电变压器的安全运行

杜绝并列运行配电变压器分接开关异位情况的出现

笔者对其分接开关异位时产生的环流及电流异常情况作了理论计算

分析引发的事故。对并列运行配电变压器分接开关异位

使配电变压器线圈产生循环电流

造成负载分配不匀

甚至会使变压器烧毁

提出了具体的防范措施

为防止发生配电变压器烧毁事故提供借鉴。

Abstract

To guarantee parallel distribution transformers working safely and prevent tap-changers from different grades

theoretical calculation of the circulation current and the abnormal current due to different grades of tap-changers is conducted

and fault analysis is performed.The results show that different grades of tap-changers in parallel distribution transformers lead to circulation current in transformers coils to unbalance the load allocation

or even burn the transformers.Some measures to avoid the different grades are suggested.

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