配電變壓器標(biāo)識(shí)容量小于真實(shí)容量的判斷方法 

周國(guó)良1，李特1，謝成1，章錫明2 
1 國(guó)網(wǎng)浙江省電力科學(xué)研究院，浙江 杭州 310014； 2 國(guó)網(wǎng)浙江省電力公司杭州供電公司，浙江 杭州 310009 
 

摘 要：針對(duì)配電變壓器大容量標(biāo)成小容量問題，對(duì)累積的抽檢試驗(yàn)數(shù)據(jù)進(jìn)行了分析，闡述了配電變壓器直流電阻、空載損耗、負(fù)載損耗與配電變壓器容量的關(guān)系，并提出了配電變壓器容量錯(cuò)標(biāo)的綜合判斷方法。試驗(yàn)結(jié)果表明，綜合利用直流電阻、空載損耗、負(fù)載損耗試驗(yàn)數(shù)據(jù)可較為可靠地判斷配電變壓器標(biāo)示容量是否小于實(shí)際容量。
關(guān)鍵詞：配電變壓器；容量錯(cuò)標(biāo)；直流電阻；空載損耗；負(fù)載損耗
中圖分類號(hào)：TM421 文獻(xiàn)標(biāo)識(shí)碼：B 文章編號(hào)：1007-3175(2015)04-0031-04

Judge Method for Wrong-Labeled Capacity of Distribution Transformer 

ZHOU Guo-liang1, LI Te1, XIE Cheng1, ZHANG Xi-ming2 
1 State Grid Zhejiang Electric Power Research Institute , Hangzhou 310014, China; 2 State Grid Hangzhou Electric Power Supply Company, Hangzhou 310009, China 
 

Abstract: For the problem of large capacity distribution transformer marked as a small capacity, this paper analyzed the accumulated sampling test data, described the relationship among DC resistance, no-load loss, load loss and variable capacitor of distribution transformer, and put forward a comprehensive judgment method of distribution wrong-labeled capacity. The test result shows that the comprehensive utilization of DC resistance, no-load loss and load loss test data can more reliably determine whether the distribution transformer capacity labeled is less than the actual capacity.
Key words: distribution transformer; wrong-labeled capacity; DC resistance; no-load loss; load loss

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