Study on Partial Discharge Characteristics Based on Copper Foil-multilayer Oil-pressboard Insulation Structure

YUAN Zichao; ZHAO Zhengyu; WU Hongbin; REN Fuqiang; LI Qingquan

doi:10.13296/j.1001-1609.hva.2026.09.011

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Study on Partial Discharge Characteristics Based on Copper Foil-multilayer Oil-pressboard Insulation Structure

Research on Insulation Medium and Discharge Mechanisms | 更新时间：2026-09-10

- Study on Partial Discharge Characteristics Based on Copper Foil-multilayer Oil-pressboard Insulation Structure
- High Voltage Apparatus Vol. 62, Issue 9, Pages: 99-107(2026)
- 作者机构：
  
  山东大学山东省先进输变电技术与智能装备重点实验室，济南 250061
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.09.011
  CLC：
- Received：21 March 2026，
  
  Revised：2026-05-20，
  
  Published：16 September 2026
- 稿件说明：
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YUAN Zichao, ZHAO Zhengyu, WU Hongbin, et al. Study on Partial Discharge Characteristics Based on Copper Foil-multilayer Oil-pressboard Insulation Structure[J]. High Voltage Apparatus, 2026, 62(9): 99-107.
DOI：

YUAN Zichao, ZHAO Zhengyu, WU Hongbin, et al. Study on Partial Discharge Characteristics Based on Copper Foil-multilayer Oil-pressboard Insulation Structure[J]. High Voltage Apparatus, 2026, 62(9): 99-107. DOI： 10.13296/j.1001-1609.hva.2026.09.011.

摘要

电力变压器主绝缘、绕组层间及绕组导体附近绝缘均为油纸绝缘结构，纸层厚度、油纸界面数量和铜箔导体层分布不同，局部放电特征存在显著差异。为分析相近绝缘厚度下结构差异对交流局部放电的影响，制备单层厚油纸、多层薄油纸和铜箔—多层薄油纸试样，采用脉冲电流法于针板电极模型测量局部放电起始电压（

PDIV

），获取相位分辨局部放电和时间分辨局部放电谱图，并统计放电重复率和平均放电量。结果表明，3类试样

PDIV

分别为5.73、8.42、10.19 kV；加压120 min时，多层薄油纸放电重复率最高，约82次/s，铜箔—多层薄油纸平均放电量最高，约199 pC。多层界面增强放电重复率，铜箔层提高放电强度，应联合谱图和统计特征来评估放电发展状态。

Abstract

The main insulation

inter-winding layer insulation and insulation near winding conductors of power transformers are all oil-pressboard insulation structures. However

due to differences in pressboard layer thickness

the number of oil-pressboard interfaces and the distribution of copper foil conductor layers

the partial discharge characteristics exhibit significant variations. To analyze the influence of structural differences on AC partial discharge under similar insulation thicknesses

the samples of single-layer thick oil-pressboard

multi-layer thin oilpressboard and copper foil-multilayer thin oil-pressboard are prepared. The partial discharge inception voltage (

PDIV

)is measured using the pulse current method in a needle-plate electrode model

the phase-resolved partial discharge and time-resolved partial discharge patterns are obtained

and the discharge repetition rate and average discharge magnitude are calculated. The results show that the

PDIV

of the three samples are 5.73 kV

8.42 kV and 10.19 kV

respectively. After voltage application for 120 minutes

the multi-layer thin oil-pressboard sample has the highest

discharge repetition rate

approximately 82 times/s

while the copper foil-multilayer thin oil-pressboard sample has the highest average discharge magnitude

approximately 199 pC. Multi-layer interfaces increase the discharge repetition rate

while the copper foil layer enhances the discharge intensity. The discharge development status shall be assessed by combining discharge patterns with statistical features.

关键词

Keywords

references

张明泽,孟繁昊,刘骥,等.变压器油纸绝缘频域介电响应非线性特性研究[J].中国电机工程学报,2023,43(2):831-843.

Zhang Mingze,Meng Fanhao,Liu Ji,et al. Research on nonlinear characteristics for frequency domain dielectric response of transformer oil-pressboard insulation[J]. Proceedings of the CSEE, 2023,43(2):831-843.

钱国超,张宁,郝建,等.工频叠加谐波电压复合应力对油纸绝缘局部放电特性及击穿失效规律的影响[J].高电压技术, 2026,52(4):1750-1762.

Qian Guochao,Zhang Ning,Hao Jian,et al. Influence of compound stress of power frequency superimposed harmonic voltage on partial discharge characteristics and breakdown failure law of oilpressboard insulation[J]. High Voltage Engineering,2026,52(4):1750-1762.

胡雪莹,李琳.基于全寿命周期成本和综合故障率的油浸式变压器经济寿命评估[J].智慧电力,2024,52(1):47-54.

Hu Xueying,Li Lin.Economic life evaluation of oil-immersed transformer based on life cycle cost and comprehensive failure rate[J]. Smart Power,2024,52(1):47-54.

林智勇,苏若杭,黄国泰,等.基于等值老化容抗的变压器油纸绝缘状态评[J].电力系统保护与控制,2025,53(3):140-147.

Lin Zhiyong,Su Ruohang,Huang Guotai,et al. Evaluation of the oil-paper insulation state of a transformer based on equivalent aging capacitance[J]. Power System Protection and Control,2025, 53(3):140-147

崔岩.环境温度影响下变压器内油纸绝缘缺陷发展过程研究[D].北京:华北电力大学,2025.

Cui Yan. Study on the development process of oil-pressboard insulation defects in transformer under the influence of ambient temperature[D]. Beijing:North China Electric Power University, 2025.

Wu Hongbin,Liu Hongshun,Xue Zhitong,et al. The generation and migration of bubbles in oil-pressboard insulation needle-plate system[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2022,29(6):2110-2121.

张晓琴,朱洪斌,杨延涛,等.局部放电电压及放电时长对油纸绝缘劣化性能的影响研究[J].高压电器,2025,61(10):30-38.

Zhang Xiaoqin,Zhu Hongbin,Yang Yantao,et al. Effect of partial discharge voltage and discharge duration on degradation performance of oil-pressboard insulation[J]. High Voltage Apparatus, 2025,61(10):30-38.

徐治仁,杨丽君,魏意恒,等.油纸绝缘快速发展型局部放电特征[J].中国电机工程学报,2021,41(21):7529-7540.

Xu Zhiren,Yang Lijun,Wei Yiheng,et al. Characteristics of rapidly developing partial discharge in oil-pressboard insulation[J]. Proceedings of the CSEE,2021,41(21):7529-7540.

王新兵,刘冬迪,燕蕾,等.天然酯油纸绝缘混油特性试验分析研究[J].变压器,2025,62(8):45-50.

Wang Xinbing,Liu Dongdi,Yan Lei,et al. Experimental analysis of oil mixing characteristics of natural ester oil paper insulation[J]. Transformer,2025,62(8):45-50.

顾刘欢. 20 Hz电压下局部放电特性及诊断方法研究[D].北京:华北电力大学,2025.

Gu Liuhuan. Study on partial discharge characteristics and diagnosis method under 20 Hz voltage[D]. Beijing:North China Electric Power University,2025.

Zhu Ran,He Dongxin,Li Shuqi,et al. Effect of voltage waveform steepness on partial discharge and charge distribution of oilpressboard insulation[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2024,31(3):1224-1232.

Li Xiaonan,Wu Guangning,Yang Yan,et al. Partial discharge characteristics of oil-pressboard insulation for on-board traction transformers under superposed inter-harmonic AC voltages[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2020, 27(1):240-248.

赵琳,顾刘欢,金涌涛,等.交流电压频率对GIS绝缘子内部气隙局部放电特性的影响[J].电机与控制学报,2025,29(2):126-135.

Zhao Lin,Gu Liuhuan,Jin Yongtao,et al. Influence of AC voltage frequency on partial discharge characteristics of internal air gap in GIS insulator[J]. Electric Machines and Control,2025,29(2):126-135.

刘娟,罗日成,曾赟,等.变压器油中气泡运动特性及聚并影响因素分析[J].变压器,2024,61(12):31-40.

Liu Juan,Luo Richen,Zeng Yun,et al. Analysis of bubble motion characteristics and coalescence influencing factors in transformer oil[J]. Transformer,2024,61(12):31-40.

Wu Hongbin,Liu Hongshun,Wang Yifan,et al. Investigating the dynamic behavior of bubbles in oil during partial discharge[J]. CSEE Journal of Power and Energy Systems,2026,12(1):547-556.

王新,金泱,杨敏,等.直流电压下热老化对表面划伤交联聚乙烯电缆局部放电特性的影响[J].绝缘材料,2024,57(7):76-83.

Wang Xin,Jin Yang,Yang Min,et al. Effect of thermal aging on partial discharge characteristics of surface-scratched XLPE cable under DC voltage[J]. Insulating Materials,2024,57(7):76-83.

王流火,谭令其,王增彬,等.局部放电信号PRPD谱图输出系统[J].高电压技术,2021,47(6):2132-2140.

Wang Liuhuo,Tan Lingqi,Wang Zengbin,et al. PRPD pattern output system for partial discharge signals[J]. High Voltage Engineering,2021,47(6):2132-2140.

庄崟萃.基于深度学习的变压器局部放电PRPD谱图模式识别[D].北京:华北电力大学,2023.

Zhuang Yincui. Pattern recognition of transformer partial discharge PRPD spectra based on deep learning[D]. Beijing:North China Electric Power University,2023.

Li Simeng,Si Wen,Li Qingquan. Partition and recognition of partial discharge development stages in oil-pressboard insulation with needle-plate electrodes under combined AC-DC voltage stress[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2017, 24(3):1781-1793.

高久国,王新伟,熊军辉,等.油纸系统典型绝缘缺陷火花放电发展过程的多参量特征分析[J].高压电器,2023,59(8):53-60.

Gao Jiuguo,Wang Xinwei,Xiong Junhui,et al. Multi-parameter characteristic analysis of spark discharge development process of typical insulation defects in oil-pressboard system[J]. High Voltage Apparatus,2023,59(8):53-60.

李星,丁登伟,吴传奇,等. 550 kV GIL三支柱绝缘子表面金属异物局部放电发展规律和闪络特性研究[J].中国电机工程学报,2026,46(4):1662-1671.

Li Xing,Ding Dengwei,Wu Chuanqi,et al. Study on partial discharge development law and flashover characteristics of metal foreign matters on the surface of 550 kV GIL tri-post insulator[J]. Proceedings of the CSEE,2026,46(4):1662-1671.

Rahman M F,Nirgude P. Partial discharge behaviour due to irregular-shaped copper particles in transformer oil with a different moisture content of pressboard barrier under uniform field[J]. IET Generation,Transmission & Distribution,2019,13(24):5550-5560.

胡一卓,王昊,常昊鑫,等.油纸绝缘匝间电弧产生和发展过程及其时频特性[J].中国电机工程学报,2025,45(9):3346-3357.

Hu Yizhuo,Wang Hao,Chang Haoxin,et al. Generation and development process of inter-turn arc in oil-pressboard insulation and its time-frequency characteristics[J]. Proceedings of the CSEE, 2025,45(9):3346-3357.

宋浩永,陈于晴,黄青丹,等.植物绝缘油纸匝间绝缘的电气性能研究[J].绝缘材料,2024,57(5):110-115.

Song Haoyong,Chen Yuqing,Huang Qingdan,et al. Study on electrical properties of vegetable oil - pressboard inter - turn insulation[J]. Insulating Materials,2024,57(5):110-115.

司雯,李天娇,李斯盟,等.交直流复合电压下老化油纸绝缘针板模型局部放电特性[J].高电压技术,2017,43(6):1980-1987.

Si Wen,Li Tianjiao,Li Simeng,et al. Partial discharge characteristics of aged oil-pressboard insulation needle-plate model under AC-DC combined voltage[J]. High Voltage Engineering,2017,43(6):1980-1987.

汲胜昌,赵德华,贾云飞,等.变压器绝缘缺陷放电发展特性及检测方法研究现状及展望[J].高电压技术,2024,50(10):4297-4314.

Ji Shengchang,Zhao Dehua,Jia Yunfei,et al. Research status and prospect of discharge development characteristics and detection methods of transformer insulation defects[J]. High Voltage Engineering,2024,50(10):4297-4314.

刘鑫,常文婧,张学友,等.电力变压器绝缘成型件的局部放电特性及其绝缘性能综合评价方法[J].绝缘材料,2024,57(1):58-67.

Liu Xin,Chang Wenjing,Zhang Xueyou,et al. Partial discharge characteristics and comprehensive evaluation method for insulation performance of power transformer insulation molded parts[J]. Insulating Materials,2024,57(1):58-67.

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