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Photodetector array for measuring the spatial-temporal distribution characteristics of electric field in oil-pressboard insulation based on the Kerr electro-optic effect: 《High Voltage》2025年第1期95-105,共11页Chunjia Gao Bo Qi Chengrong Li Yukung Zheng; National Natural Science Foundation of China,Grant/Award Number:52107148;Postdoctoral Research Foundation of China,Grant/Award Number:2020M680485;Fundamental Research Funds for the Central-Universities,Grant/Award Number:2021MS004。; Accurate measurement and effective analysis of the space electric field and charge characteristics within the oil-pressboard insulation structure of converter transformer are essential for achieving precise insulation...; 关键词：INSULATION distribution field

Moisture dynamics during high-load fluctuations in transformers:Localised accumulation and interfacial transfer within oil/pressboard insulation: 《High Voltage》2024年第6期1221-1233,共13页Shaoqi Wang Qiaogen Zhang Chong Guo Yuhan Sun Zhicheng Wu; Science and Technology Project of State Grid Corporation of China,Grant/Award Number:SGSXDKOOSPJS2310322。; Power systems grapple with the challenges of high load rates and intermittent new energy sources integration.Transformers,as vital equipment,employ oil/pressboard(oil/PB)insulation.Uneven moisture distribution in this...; 关键词：MOISTURE INSULATION TRANSFER

Defect recognition of oil-pressboard insulation based on frequent arc reignition phenomenon under switching impulse voltage: 《High Voltage》2024年第4期773-785,共13页Simeng Li Yukun Zhang Yunfei Jia Shengchang Ji Yanhua Han Wensen Wang; National Natural Science Foundation of China(Young Scientistic Program),Grant/Award Number:52007148;State Key Laboratory of Intense Pulsed Radiation Simulation and Effect through Open Foundation,Grant/Award Number:SKLIPR2114。; In the past three years,a number of oil-immersed ultra-high-voltage shunt reactors have experienced discharge defects when being put into operation,resulting in an overload of acetylene.However,detecting and identifyi...; 关键词：FIELD INSULATION OSCILLATION

Study on partial discharge and charge accumulation characteristics of oil‐pressboard insulation under DC superimposed harmonic voltage被引量：2: 《High Voltage》2023年第6期1215-1224,共10页Shuqi Li Qiang Wang Dongxin He Liangkai Wang Qingquan Li Wen Si; supported by the National Natural Science Foundation of China(U1966209);Natural Science Foundation of Shandong Province(ZR2021QE134).; The oil‐pressboard insulation on the valve side of the converter transformer withstands pulsating square wave voltage.The voltage contains lots of DC components and high‐order harmonics,which is likely to cause insu...; 关键词：HARMONIC INSULATION CHARGE

Effect of DC electric field on moisture migration characteristics in oil-pressboard被引量：2: 《High Voltage》2021年第4期647-654,共8页Qing Yuan Bo Qi Jianshe Zhao Chunjia Gao Xiao Yang Shuqi Zhang Chengrong Li; National Natural Science Foundation of China,Grant/Award Number:U1866603;Science and Technology Project of SGCC,Grant/Award Number:GYB17201900228。; The moisture content has a great influence on the electric insulation strength of oil-pressboard.Therefore,it is very important to assess the moisture content in power transformers.There is lack of research about the ...; 关键词：MOISTURE CHARACTERISTICS FIELD

Classification of thermal ageing impact of ester fluid-impregnated pressboard material adopting LIBS: 《High Voltage》2021年第4期655-664,共10页Arputhasamy J.Amalanathan Nilesh J.Vasa Noureddine Harid Huw Griffiths Ramanujam Sarathi; This article reports the thermal ageing of ester fluid-impregnated pressboard material along with its performance evaluation using optical emission spectroscopy(OES)and classifi-cation using machine-learning algorithm...; 关键词：thermal analysis FLUID

Comparison of AC breakdown characteristics on insulation paper (pressboard) immersed by three-element mixed insulation oil and mineral oil被引量：4: 《High Voltage》2020年第3期298-305,共8页Dawei Feng Jian Hao Lijun Yang Ruijin Liao Xin Chen Jian Li; Insulation oil is an important dielectric in power devices,and many studies on mixed insulation oil have been conducted in recent years to improve the performance of insulation oils.To replace mineral oil directly,the...; 关键词：INSULATION immersed BREAKDOWN

Studies on the effects of moisture and ageing on charge de-trapping properties of oilimpregnated pressboard based on IRC measurement被引量：3: 《High Voltage》2019年第2期151-157,共7页Nasirul Haque Sovan Dalai Biswendu Chatterjee Sivaji Chakravorti; CSIR,Government of India,and grant of DST,Government of India under the SERB scheme,file no.EEQ/2016/00046;FIST grant of DST,Government of India(grant no.SR/FST/ETI-362/2014).; The dielectric properties of oil-paper insulation degrade due to moisture ingression and ageing.This degradation significantly impacts the space charge accumulation and charge trapping behaviour in the insulation,whic...; 关键词：MOISTURE TRAPPING CHARGE

Effects of temperature on creepage discharge characteristics in oil-impregnated pressboard insulation under combined AC–DC voltage: 《Plasma Science and Technology》2019年第5期14-22,共9页Fubao JIN Yuanxiang ZHOU Bin LIANG Zhongliu ZHOU Ling ZHANG; supported by the Natural Science Foundation of Qinghai Province(No.2016-ZJ-925Q);Chinese National Programs for Fundamental Research(No.2011CB209400); Due to the complexity of the valve side winding voltage of the converter transformer, the insulation characteristics of the oil-impregnated pressboard(OIP) of the converter transformer are different from those of the ...; 关键词：oil-impregnated PRESSBOARD INSULATION combined AC-DC VOLTAGE inception VOLTAGE CREEPAGE discharge temperature flashover VOLTAGE

Impulse Creeping Streamer and Propagation Velocity in Vegetable and Mineral Oils with Pressboard Interface: 《Journal of Energy and Power Engineering》2018年第7期346-355,共10页Ryoichi Hanaoka Katsunori Miyagi Yoji Fujita Kiyoshi Takamoto Seiichi Nishikawa Yoshiyuki Oura; This paper presents an experimental study on the creeping discharge propagating over the pressboard surface in two vegetable oils(PFAE(palm fatty acid ester)oil and CRS(crude rapeseed)oil)and commercial mineral oil un...; 关键词：CREEPING STREAMER STOPPING length propagation velocity quasi-square IMPULSE voltage PFAE OIL CRS OIL mineral OIL

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