On-site Valve-side Partial Discharge Test Method of the Converter Transformer in ±800 kV UHVDC Transmission Project

WU Deguan; YU Zhongtian; ZHOU Yu; PAN Kai; LI Hongyuan; XIA Hui

doi:10.13296/j.1001-1609.hva.2015.02.023

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On-site Valve-side Partial Discharge Test Method of the Converter Transformer in ±800 kV UHVDC Transmission Project

更新时间：2025-04-26

- On-site Valve-side Partial Discharge Test Method of the Converter Transformer in ±800 kV UHVDC Transmission Project
- High VoltageApparatus Vol. 51, Issue 2, Pages: 136-140+145(2015)
- 作者机构：
  
  南方电网超高压输电公司检修试验中心
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.02.023
  CLC： TM41;TM721.1
- Published：2015
- 稿件说明：
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[1]吴德贯,余忠田,周禹,潘凯,李红元,夏辉.±800kV特高压直流工程换流变压器阀侧对称加压局部放电试验的现场试验方法探讨[J].高压电器,2015,51(02):136-140+145.

WU Deguan, YU Zhongtian, ZHOU Yu, et al. On-site Valve-side Partial Discharge Test Method of the Converter Transformer in ±800 kV UHVDC Transmission Project[J]. High voltageapparatus, 2015, 51(2): 136-140+145.
[1]吴德贯,余忠田,周禹,潘凯,李红元,夏辉.±800kV特高压直流工程换流变压器阀侧对称加压局部放电试验的现场试验方法探讨[J].高压电器,2015,51(02):136-140+145. DOI： 10.13296/j.1001-1609.hva.2015.02.023.

WU Deguan, YU Zhongtian, ZHOU Yu, et al. On-site Valve-side Partial Discharge Test Method of the Converter Transformer in ±800 kV UHVDC Transmission Project[J]. High voltageapparatus, 2015, 51(2): 136-140+145. DOI： 10.13296/j.1001-1609.hva.2015.02.023.

摘要

长时感应电压（ACLD）带局部放电测量试验是检测变压器内部是否存在缺陷的最有效手段之一。笔者以±800 kV特高压直流工程中Y-Δ换流变压器局部放电测量试验为对象

研究并成功实施了现场直接采用阀侧对称加压方式进行的ACLD带局部放电测量试验。详细介绍了该试验的试验原理及方法、试验参数的计算和现场实施情况

并对试验回路中采取的抗干扰措施进行了总结。试验结果验证了特高压换流变现场阀侧对称加压局部放电试验的可行性及有效性。

Abstract

To conduct partial discharge test of converter transformer with Y-Δ connection in the ±800 kV UHVDC transmission project

an on-site ACLD with partial discharge test was implemented by symmetrically applying testing voltage on valve-side winding. In this paper

the testing method and its principle

the calculation of the testing parameters

and the on-site test implementation are discussed in detail. And the anti-interference measures for the testing circuit are described. Test results verify the feasibility and effectiveness of the ACLD with partial discharge test for UHV converter transformers by symmetrically applying voltage on the valve-side winding.

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