Suzhou Electric Appliance Research Institute
期刊號: CN32-1800/TM| ISSN1007-3175

SUBSCRIPTION MANAGEMENT

發(fā)行征訂

首頁 >> 發(fā)行征訂 >> 征訂方式

干式直流支撐電容器的絕緣電阻特性分析與試驗測試

來源:電工電氣發(fā)布時間:2025-04-03 10:03瀏覽次數(shù):3

干式直流支撐電容器的絕緣電阻特性分析與試驗測試

李印達1,2,孫曉武1,2,曹崇峰1
(1 無錫市電力濾波有限公司, 江蘇 無錫 214112;
2 晟容電力科技(安徽)有限公司, 安徽 銅陵 244000)
 
    摘 要:絕緣電阻會影響干式直流支撐電容器(DCLC)的均壓、儲能性能,故對高溫、高場強下 DCLC 的絕緣電阻特性分析具有重要意義。以工作場強 E0 是 233.3 V/μm 時的 DCLC 為研究對象,分析 DCLC 的絕緣電阻和電導率,并搭建了相關試驗平臺,開展不同溫度和不同場強下的等效絕緣電阻測量試驗,分析 DCLC 的等效絕緣電阻影響因素。研究結果表明:DCLC 的等效絕緣電阻隨著工作場強增加而快速下降;DCLC 的等效絕緣電阻隨著溫度增加而下降。分析得出,影響 DCLC 的等效絕緣電阻關鍵因素為聚丙烯薄膜材料、金屬層的蒸鍍。
    關鍵詞: 干式直流支撐電容器;等效絕緣電阻;金屬化聚丙烯薄膜;自放電時間常數(shù)
    中圖分類號:TM533+.3     文獻標識碼:B     文章編號:1007-3175(2025)03-0035-06
 
Analysis and Experimental Testing of Insulation Resistance
Characteristics of Dry DC Link Capacitor
 
LI Yin-da1,2, SUN Xiao-wu1,2, CAO Chong-feng1
(1 Wuxi Power Filter Co., Ltd, Wuxi 214112, China;
2 Sheng Rong Power Technology (Anhui) Co., Ltd, Tongling 244000, China)
 
    Abstract: Insulation resistance affects the voltage balancing and energy storage performance of dry DC link capacitor (DCLC), which is of great significance for the analysis of insulation resistance characteristics of DCLC at high temperature and high field strength. In this paper,taking a DCLC with the working field strength E0 of 233.3 V/μm as the research object, analyzing the insulation resistance and conductance of DCLC, and building the related test platform, based on this, the equivalent insulation resistance measurement tests were carried out at different temperatures and different field strengths to analyze the factors affecting the equivalent insulation resistance of DCLC. The results show that the equivalent insulation resistance of DCLC decreases rapidly with the increase of the working field strength, the equivalent insulation resistance of DCLC decreases with the increase of temperature. It is analyzed that the key factors affecting the equivalent insulation resistance of DCLC are polypropylene film material and the vaporization of the metal layer.
    Key words: dry DC link capacitor; equivalent insulation resistance; metallized polypropylene film; self-discharge time constant
 
參考文獻
[1] 孫曉武. 直流支撐電容器溫升影響因素研究[J]. 電氣技術,2020,21(4) :6-79.
[2] 孫曉武. 環(huán)境溫度對直流支撐電容器溫升影響的研究[J].電工電氣,2020(2) :51-53.
[3] 孫曉武. 直流支撐電容器的紋波電流影響其溫升的研究[J]. 電力電容器與無功補償,2020,41(4) :76-80.
[4] 孫曉武,李印達,曹崇峰. 空氣濕度對直流支撐電容器元件性能影響的研究[J] . 電力電容器與無功補償,2020,41(4) :51-56.
[5] 李志元,王鏡然,徐哲,等. 直流電壓作用下金屬化膜電容器的自愈特性及壽命預測[J] . 高電壓技術,2023,49(7) :2929-2937.
[6] KARANJA P , NATH R . Charge trapping and conduction inpure and iodine-doped biaxially oriented polypropylene[J].IEEE Transactions on Dielectricand Electrical Insulation,1994,1(2) :213-222.
[7] UMEMURA T, AKIYAMA K.Morphology and electrical properties of biaxially-oriented polypropylene film [J] . IEEE Transactions on Electrical Insulation,1986,21(2) :137-144.
[8] IEDA M, SAWA G, KATO S.A consideration of Poole-Frenkel effect on electric conduction in insulators[J].Journal of Applied Physics,1971,42(10) :3737-3740.
[9] 雷清泉. 高場強下電介質電導[J]. 哈爾濱工程學院學報,1981,4(2) :1-14.
[10] LI H , LI Z W , LIN F C , et al . Electrical conduction of metalized BOPP films based on revised Poole–Frenkel effect[J].Journal of Electrostatics,2013,71(6) :958-962.
[11] 陳耀紅,章妙,李化,等. 高場強下金屬化膜電容器絕緣電阻特性[J] . 強激光與粒子束,2012,24(4) :797-800.
[12] 李智威,李化,楊佩原,等. 不同場強下金屬化聚丙烯膜電容器泄漏特性[J] . 電工技術學報,2013,28(9) :274-280.
[13] 嚴璋,朱德恒. 高電壓絕緣技術[M]. 北京:中國電力出版社,2007 :178-182.
[14] 王雨橙,李化,王哲豪,等. 結晶度對金屬化膜電容器保壓性能的影響[J] . 高電壓技術,2022,48(9) :3643-3650.
[15] 孫明,孫曉武,李印達. 直流支撐電容器元件損耗角正切影響因素研究[J]. 電工電氣,2022(4) :53-57.
[16] 全國電力電容器標準化技術委員會. 脈沖電容器及直流電容器:JB/T 6168—2023[S]. 北京:機械工業(yè)出版社,2023 :8-13.
[17] AMBORSKI L E.Structural dependence of the electrical conductivity of polyethylene terephthalate[J].Journal of Polymer Science,1962,62(174) :331-346.