特高压换流变压器对称性涌流的生成及其对大差保护的影响

WENG Hanli

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特高压换流变压器对称性涌流的生成及其对大差保护的影响

更新时间：2025-08-13

- 特高压换流变压器对称性涌流的生成及其对大差保护的影响
- Automation of Electric Power Systems Vol. 41, Issue 5, Pages: 153-158(2017)
- 作者机构：
  
  三峡大学电气与新能源学院,湖北省,宜昌市,443002
- 作者简介：
- 基金信息：
- DOI：
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- Published：2017
- 稿件说明：
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WENG Hanli. [J]. Automation of electric power systems, 2017, 41(5): 153-158.
DOI：

WENG Hanli. [J]. Automation of electric power systems, 2017, 41(5): 153-158. DOI：

摘要

借鉴和应涌流分析方法，分析特高压一组换流变压器空投时对称性涌流的产生机理和变化特点。基于工程实际参数建立详尽的特高压直流输电的仿真模型，对特高压换流站内一组换流变压器空投产生对称性涌流现象进行了仿真分析。阐明二次谐波制动判据失去闭锁能力造成特高压换流变压器大差保护误动的机理，为提升特高压换流站大差保护的动作可靠性提供分析手段。

Abstract

By drawing on the analytical method of sympathetic inrush current

the generation mechanism and variation characteristics of symmetrical inrush current caused by the energization of a set of two ultra-high voltage(UHV)converter transformers are dealt with. Based on an ultra-high voltage direct current(UHVDC)transmission project simulation model

the phenomenon of symmetrical inrush currents in the cases of UHV converter transformer energization are simulated. The reason for failure of the secondary harmonic restraint criterion to block the converter connection-transformer differential protection is explained

which provides a means for enhancing the operation reliability of the converter transformer differential protection for UHV converter stations.

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Related Institution

School of Electric Power, South China University of Technology

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