[1]任雙贊,吳經鋒,楊傳凱,等.加速老化下油紙絕緣氣隙缺陷模型放電的特征演化與參量表征研究[J].高壓電器,2018,54(11):213-219.[doi:10.13296/j.1001-1609.hva.2018.11.031]
 REN Shuangzan,WU Jingfeng,YANG Chuankai,et al.Evolutional Behavior and Parameters Characterization of Partial Discharge from a Cavity Defect in Oil/Paper Insulation Under Aging Conditions[J].High Voltage Apparatus,2018,54(11):213-219.[doi:10.13296/j.1001-1609.hva.2018.11.031]
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加速老化下油紙絕緣氣隙缺陷模型放電的特征演化與參量表征研究 ()
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《高壓電器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第54卷
期數:
2018年11期
頁碼:
213-219
欄目:
電力變壓器局部放電檢測及狀態評估
出版日期:
2018-11-05

文章信息/Info

Title:
Evolutional Behavior and Parameters Characterization of Partial Discharge from a Cavity Defect in Oil/Paper Insulation Under Aging Conditions
作者:
任雙贊1吳經鋒1楊傳凱1劉偉2師一卿2 李良書2溫嘉烨3李元3張冠軍3
1. 國網陝西省電力公司電力科學研究院, 西安 710100; 2. 國網陝西省電力公司, 西安 710048; 3. 西安交通大學電力設備電氣絕緣國家重點實驗室, 西安 710049
Author(s):
REN Shuangzan1 WU Jingfeng1 YANG Chuankai1 LIU Wei2 SHI Yiqing2 LI Liangshu2 WEN Jiaye3 LI Yuan3 ZHANG Guanjun3
1. State Grid Shaanxi Electric Power Research Institute, Xi’an 710100, China; 2. State Grid Shaanxi Electric Power Company, Xi’an 710048, China; 3. State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
關鍵詞:
油紙絕緣 氣隙放電 老化狀態 統計參數
Keywords:
oil-paper insulation cavity discharge aging condition statistical parameter
DOI:
10.13296/j.1001-1609.hva.2018.11.031
文獻標志碼:
A
摘要:
氣隙放電是變壓器內最爲常見的放電形式,通過檢測其放電發展程度來表征油紙老化程度有助于對變壓器放電危險性進行定量評估。爲研究不同老化狀態下的油紙絕緣內部氣隙放電的發展特性,提出表征老化程度和放電危險度的特征量,通過加速熱老化制備4種不同老化程度的油紙絕緣試品,搭建油紙絕緣局部放電試驗平台,在階升電壓下獲得局部放電發展過程中的放電譜圖。研究發現,隨著老化程度的加深,局部放電起始電壓和擊穿電壓總體呈下降趨勢,且放電量的威布爾尺度參數α值和平均放電功率P變化較爲顯著;連續放電時間差Δt對放電發展階段和絕緣老化程度反應靈敏,可用于放電危險度評估指標。
Abstract:
Cavity induced discharge has been acknowledged one of the most common form of partial discharge(PD)in transformers. Figuring out the PD evolutional behavior of oil-paper insulation cavity defect under various aging conditions would contribute to the quantitative evaluation of risk in transformers. To investigate the developing characteristics of the cavity induced discharge and offer the parameters charactering aging degree and discharge risk of the insulation,four oil-paper insulation samples with different aging degrees were prepared by accelerating thermally aging procedures, and a PD detection platform of oil-paper insulation was established to obtain the PRPD pattern. Conclusions can be drawn that: PD inception voltage and breakdown voltage show a decreasing trend with aging condition; the Weibull scale parameter α and average discharge power P change remarkably; and the time interval(Δt) between two consecutive discharges shows a tight correlation with the discharging stage and aging condition of the insulation, indicating that it is applicable to quantitative risk assessment of the insulation in the presence of PD.

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備注/Memo

備注/Memo:
收稿日期:2018-04-09; 修回日期:2018-06-11 基金項目:國家自然科學基金(51607139); 中央高校基本科研業務費專項資金(Xjj2016012)。 Project Supported by National Natural Science Foundation of China(51607139),the Fundamental Research Funds for the Central Universities(Xjj2016012).任雙贊(1981—),男,高級工程師,博士,主要從事電力設備高電壓試驗、故障診斷及評價方面的研究。 李 元(1984—),男,講師,碩士生導師,研究方向爲高電壓試驗與變壓器狀態感知技術。
更新日期/Last Update: 2018-11-25