Calculation Method for Technical Parameters of On-load Tap Changer in Phase Shifting Transformer

LIU Xin; LIANG Guishu; WANG Litong; GAO Fei; LI Bo; LI Jinzhong

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Calculation Method for Technical Parameters of On-load Tap Changer in Phase Shifting Transformer

更新时间：2025-12-08

- Calculation Method for Technical Parameters of On-load Tap Changer in Phase Shifting Transformer
- Vol. 43, Issue 3, Pages: 838-844(2017)
- 作者机构：
  
  1. 华北电力大学电力工程系
  2. 中国电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：10 March 2017，
  
  Published：2017
- 稿件说明：
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LIU Xin, LIANG Guishu, WANG Litong, et al. Calculation Method for Technical Parameters of On-load Tap Changer in Phase Shifting Transformer[J]. 2017, 43(3): 838-844.
DOI：

LIU Xin, LIANG Guishu, WANG Litong, et al. Calculation Method for Technical Parameters of On-load Tap Changer in Phase Shifting Transformer[J]. 2017, 43(3): 838-844. DOI：

摘要

双芯移相变压器中有载分接开关开断级电压、电流的大小与负载条件关系密切

为了确定负载条件对有载分接开关技术参数的影响

在介绍双芯移相变压器的工作原理及运行特性的基础上

推导了实用、精确的负载条件下的级电压计算式

并以230 k V/150 MVA双芯移相变压器为例

通过对比计算式与MATLAB/SIMULINK仿真模型的结果

验证了级电压计算式的准确性。通过分析级电压与负载大小及性质的关系表明

采用负载条件下的级电压计算方法可更为准确地确定移相变压器有载分接开关的技术参数。此外

通过分析负载功率因数对最大级电压的影响可知级电压随着负载功率因数的增大而增大。

Abstract

The breaking step voltage and current of on-load tap changer in two-core phase shifting are closely related to on-load conditions.To determine the effects of on-load conditions on technical parameters of the on-load tap changer

by introducing the working principle and operational characteristics of two-core phase-shifting transformer

we deduced a practical and accurate formula about step voltage under the conditions of on-load.Taking a 230 k V/150 MVA two-core phase-shifting transformer as an example

we verified the accuracy of the proposed formula by comparing the MATLAB/SIMULINK simulation results with the results obtained by the formula.Then

we analyzed the relationship between the step-voltage and the load characteristics.It is demonstrated that more accurate technical parameters of the on-load tap changer can be determined by the calculation method based on the on-load conditions.Furthermore

a conclusion is drawn that the step-voltage increases with the growth of power factor by analyzing the influence of the load power factor on the maximum step-voltage.

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