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

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變壓器油紙絕緣回復電壓自動采集系統(tǒng)及試驗研究

來源:電工電氣發(fā)布時間:2016-10-19 09:19 瀏覽次數(shù):12
變壓器油紙絕緣回復電壓自動采集系統(tǒng)及試驗研究
 
張斌,張濤,于潔,張曉林
(三峽大學 電氣與新能源學院,湖北 宜昌 443002)
 
    摘 要:回復電壓法(RVM) 是一種無損的評估變壓器油紙絕緣狀態(tài)的方法。基于回復電壓測量原理,利用可編程控制的6517B 靜電儀,在VB 軟件開發(fā)平臺下,研制了一套回復電壓采集系統(tǒng)。該系統(tǒng)能夠自動地測量不同充電時間的回復電壓,繪制出回復電壓極化譜并對其特征量進行提取。對該系統(tǒng)的性能進行實驗測試并分析了不同實驗因素對極化譜的影響,結果表明,該系統(tǒng)準確測量出回復電壓,并獲得了殘余電荷最佳消除時間K 30 放電裕度。
    關鍵詞:變壓器;絕緣檢測;回復電壓;老化評估
    中圖分類號:TM411     文獻標識碼:A     文章編號:1007-3175(2016)10-0039-04
 
Automatic Acquisition System of Return Voltage for Transformer
Oil Paper Insulation and Experimental Study
 
ZHANG Bin, ZHANG Tao, YU Jie, ZHANG Xiao-lin
(College of Electrical Engineering and New Energy, Three Gorges University, Yichang 443002, China)
 
    Abstract: The return voltage method is a kind of lossless method to evaluate transformer oil paper insulation state. According to the principle of return voltage measurement, based on the programmable control 6517B electrometer and the VB software development platform, this paper designed a set of return voltage acquisition system, which could automatically measure the return voltage of different charging time, drew the return voltage polarization spectrum and extract the characteristic quantity. The performance of the system was tested and this paper analyzed the influence of different experimental factors on the polarization spectrum. The results show that this system can be used to measure the return voltage
and obtain the discharging margin K30, the best eliminating time of remnant charges.
    Key words: transformer; insulation detection; return voltage; aging assessment
 
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