Phenomenon of Oil Flow Static Electrification and Its Influence on Breakdown Strength of Converter Transformer Under Multi Parameters

LIU Daosheng; LIU Ning; YE Jing; LI Jiachen; WANG Shihui

doi:10.13296/j.1001-1609.hva.2020.02.018

您当前的位置：

首页 >

文章列表页 >

Phenomenon of Oil Flow Static Electrification and Its Influence on Breakdown Strength of Converter Transformer Under Multi Parameters

更新时间：2025-04-26

- Phenomenon of Oil Flow Static Electrification and Its Influence on Breakdown Strength of Converter Transformer Under Multi Parameters
- High VoltageApparatus Vol. 56, Issue 2, Pages: 122-127(2020)
- 作者机构：
  
  1. 江西理工大学电气工程与自动化学院
  2. 浙江大学电气工程与自动化学院
  3. 三变科技股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.02.018
  CLC： TM41
- Published：2020
- 稿件说明：
移动端阅览
[1]刘道生,刘宁,叶敬,李家晨,王仕会.换流变压器在多参数下的油流带电现象及其对击穿强度影响[J].高压电器,2020,56(02):122-127.

LIU Daosheng, LIU Ning, YE Jing, et al. Phenomenon of Oil Flow Static Electrification and Its Influence on Breakdown Strength of Converter Transformer Under Multi Parameters[J]. High voltageapparatus, 2020, 56(2): 122-127.
[1]刘道生,刘宁,叶敬,李家晨,王仕会.换流变压器在多参数下的油流带电现象及其对击穿强度影响[J].高压电器,2020,56(02):122-127. DOI： 10.13296/j.1001-1609.hva.2020.02.018.

LIU Daosheng, LIU Ning, YE Jing, et al. Phenomenon of Oil Flow Static Electrification and Its Influence on Breakdown Strength of Converter Transformer Under Multi Parameters[J]. High voltageapparatus, 2020, 56(2): 122-127. DOI： 10.13296/j.1001-1609.hva.2020.02.018.

摘要

大容量和超高压变压器主要采用强迫油流循环传热与散热方式。为了进一步揭示油流静电现象对该种散热方式的变压器的危害

文中建立了油流带电测试平台。在测试过程中

研究了变压器油在不同温度、流速和施加交直流电压对新的和干燥的变压器油击穿场强的影响。实验结果表明

强迫油流循环系统中

流动的变压器油的带电量随温度升高和流速的增加而增加

在温度为50℃

出现拐点

即温度高于50℃

变压器油的带电量随温度升高而减小;施加直流电压时

变压器油流电流随流速增加而增加

当流速为6.9 m/s时

变压器油流带电的极性发生反转。油流静电现象会导致油的击穿场强降低。因此

应采取有效措施来抑制特高压换流变压器的油流带电引起的危害。

Abstract

Forced convection of insulation oil is the main heat transfer mode in large-power and ultra-high voltage（UHV） transformer.In order to further reveal the harm of electrostatic phenomenon of the oil flow to this type of transformer

this research established an oil flow testing platform.Oil flow electrification was measured on this platform

and the influences of oil temperature

flow velocity and applied electric field on the breakdown strength of fresh and dry transformer oil were investigated.The results show that:1) the current in the oil flow increases with the increase of the temperature when the temperature is below 50℃

but it reverses when the temperature is above 50℃;2) under DC voltage the current in the oil flow increases with the increase of the flow velocity

while the polarity of the current reverses at the flow velocity of 6.9 m/s;and 3) the oil electrification phenomenon may lead to reduction of the breakdown strength of the oil.It is suggested that some countermeasures should be taken to restrain the possible harm caused by oil flow electrification in UHV converter transformer.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study on Internal Heat Transfer Characteristics of Converter Transformer Under OFAF Cooling Mode

Research and Analysis on Harmonic Current Switching Test Technology of Vacuum Type On-load Tap-changer for Converter Transformer

Propagation Mode Classification for Streamers in Transformer Oil Based on Luminous and Structural Characteristics of Discharge Channels

Intelligent Diagnosis Technology of Mechanical State of Converter Transformer Based on Proportion of Wavelet Energy

Research on Adsorption Mechanism of Mn-doped SnS Two-dimensional Materials Towards Dissolved Gases Analysis in Transformer Oil

Related Author

LIU Zhiyuan

LIU Lijun

YANG Chen

LI Zaoyang

FAN Guangwei

DENG Jun

WANG Peiren

ZHOU Haibin

Related Institution

Super High Voltage Company of State Grid Ningxia Electric Power Co., Ltd.

School of Energy and Power Engineering, Xi'an Jiaotong University

Electric Power Research Institute of EHV Power Transmission Company of China Southern Power Grid Co

Xi’an High Voltage Apparatus Research Institute Co., Ltd.

School of Electric Engineering, Shanghai University of Electric Power

⁰