Influence of Hydrostatic Pressure on Discharge of Oil-paper Insulation Under Needle-plate Electrode

HU Guangcai; LI Xiaonan; GAO Bo; YANG Yan; LIU Kai; WU Guangning

English Version Reader LoginJournal Login

您当前的位置：

首页 >

文章列表页 >

Influence of Hydrostatic Pressure on Discharge of Oil-paper Insulation Under Needle-plate Electrode

更新时间：2025-12-08

- Influence of Hydrostatic Pressure on Discharge of Oil-paper Insulation Under Needle-plate Electrode
- Vol. 47, Issue 12, Pages: 4191-4198(2021)
- 作者机构：
  
  西南交通大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 December 2021，
  
  Published：2021
- 稿件说明：
移动端阅览
HU Guangcai, LI Xiaonan, GAO Bo, et al. Influence of Hydrostatic Pressure on Discharge of Oil-paper Insulation Under Needle-plate Electrode[J]. 2021, 47(12): 4191-4198.
DOI：

HU Guangcai, LI Xiaonan, GAO Bo, et al. Influence of Hydrostatic Pressure on Discharge of Oil-paper Insulation Under Needle-plate Electrode[J]. 2021, 47(12): 4191-4198. DOI：

摘要

局部放电是导致油纸绝缘老化损伤的主要问题

同时气泡是诱发油纸绝缘局部放电和击穿的关键因素

其含量和绝缘强度受液压影响较大。为探明液压对油纸绝缘局部放电的影响规律

研制了全封闭可调液压油纸绝缘局部放电试验平台

研究了针板电极下液压对油纸绝缘放电的影响规律

分析了液压对放电特性的影响机理。研究表明

起始放电电压和击穿电压随液压上升而增加

且其增速逐渐减小;而最大放电量、平均放电量、放电重复频率、放电电流和放电功率值在运行条件下均随液压上升而下降。造成这种结果的主要原因是由于液压改变了气体在油中的溶解度和气泡的压缩密度

进而影响了放电特性。研究结果可为不同液压下油纸绝缘的优化设计和科学运行提供试验基础和理论支撑。

Abstract

The principal factor of insulation erosion is partial discharge. Bubble is the key weak factor of oil-paper insulation

and its content and dielectric strength are affected by the hydrostatic pressure to a large extent. To understand the tendency that discharge in oil-paper insulation varies with hydrostatic pressure

a whole sealing pressure adjustable partial discharge testing platform is developed. The discharge of needle-plate discharge under different hydrostatic pressures is researched

and the influencing mechanism is analyzed. It is revealed that the partial discharge inception voltage and the breakdown voltage increase with the rise in hydrostatic pressure

and the increase rate declines gradually. The peak value of partial discharge

the average discharge value

the discharge repetition rate

discharge current and discharge power under operation condition decrease with the rise in pressure. This is because hydrostatic pressure can change the solubility and compression degree of the gases in oil. The results can provide an experimental basis and theoretical support to the oil-paper equipment design and their reasonable operation.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effect of Re-applied and Pre-pressing DC Voltage on the Characteristics of Partial Discharge Within Oil-paper Insulation

Effect of Preloaded DC Voltage on Characteristics of Partial Discharge in Oil-paper Insulation

Research on Partial Discharge of Oil-paper Insulation Needle-plate Electrode Under Switching Pulse Voltage

Characteristics of Partial Discharge of Typical Oil-paper Defects Under Lightning Impulse Voltage

Generation Process of Impurity Bridges in Oil-paper Insulation Under DC Voltage

Related Author

NIE Dexin

WANG Mingyuan

SHA Yanchao

ZHOU Yuanxiang

WU Zhirong

DENG Jiangang

JIN Fubao

SHA Yanchao

Related Institution

State Grid Electric Power Research Institute

State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments, Department of Electrical Engineering, Tsinghua University

North China Electric Power Research Institute Co., Ltd.

North China Electric Power Research Institute

State Grid Corporation of China

AI问答

⁰