DC Breakdown Characteristics of Oil-paper Insulation Under Influence of Different Factors

ZHANG Shuqi; ZHAO Xiaolin; TAN Ruijuan; LIANG Ningchuan; ZHOU Xiu; LIU Liqing; QI Bo; LI Chengrong

doi:10.13296/j.1001-1609.hva.2020.04.016

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DC Breakdown Characteristics of Oil-paper Insulation Under Influence of Different Factors

更新时间：2025-04-26

- DC Breakdown Characteristics of Oil-paper Insulation Under Influence of Different Factors
- High VoltageApparatus Vol. 56, Issue 4, Pages: 102-107(2020)
- 作者机构：
  
  1. 新能源电力系统国家重点实验室(华北电力大学)
  2. 中国电力科学研究院有限公司
  3. 国网宁夏电力有限公司电力科学研究院
  4. 国网天津市电力公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.04.016
  CLC： TM721.1
- Published：2020
- 稿件说明：
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[1]张书琦,赵晓林,谭瑞娟,梁宁川,周秀,刘力卿,齐波,李成榕.不同因素影响下的油纸绝缘直流击穿特征[J].高压电器,2020,56(04):102-107.

ZHANG Shuqi, ZHAO Xiaolin, TAN Ruijuan, et al. DC Breakdown Characteristics of Oil-paper Insulation Under Influence of Different Factors[J]. High voltageapparatus, 2020, 56(4): 102-107.
[1]张书琦,赵晓林,谭瑞娟,梁宁川,周秀,刘力卿,齐波,李成榕.不同因素影响下的油纸绝缘直流击穿特征[J].高压电器,2020,56(04):102-107. DOI： 10.13296/j.1001-1609.hva.2020.04.016.

ZHANG Shuqi, ZHAO Xiaolin, TAN Ruijuan, et al. DC Breakdown Characteristics of Oil-paper Insulation Under Influence of Different Factors[J]. High voltageapparatus, 2020, 56(4): 102-107. DOI： 10.13296/j.1001-1609.hva.2020.04.016.

摘要

由于系统性原因

换流变压器阀侧在实际运行过程中长期承受直流电场分量作用

油纸绝缘在直流电压下的耐受能力是换流变压器设计过程中的重要关注点。文中考虑谐波含量、油温、含气量、油纸介电常数、纸板浸渍程度等各种潜在因素

开展了油纸绝缘直流击穿特征的基础试验研究

并用初始电子发射、空间电荷、杂质小桥等电介质理论对结果予以合理阐释

相关结论可对换流变压器阀侧绝缘结构优化和场强设计提供一定的参考。

Abstract

For certain systematic reasons

the valve side of converter transformer bears DC electric field component over a long time in the actual operation process.The tolerance of oil-paper insulation under DC voltage is an important concern in the design process of converter transformer.Considering various potential factors such as harmonic content

oil temperature

gas content

oil-paper dielectric constant

paper impregnating degree and oil-gap spacing

the basic experimental study on DC breakdown characteristics of oil-paper insulation is carried out

and the dielectric theories such as initial electron emission

space charge and impurity bridge are used to explain the results reasonably.Relevant conclusions can provide some references to the valve side insulation structure optimization and field strength design of the converter transformer.

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