發(fā)布時間：2018-09-15 19:17

【摘要】：為研究油浸式變壓器局部放電特高頻檢測技術的信號量化標定問題,在人工模擬變壓器內(nèi)搭建了典型局部放電的缺陷模型并進行相關實驗研究,同時提取了4種在不同放電電壓下的油中典型缺陷的局放視在放電量和特高頻信號積累能量作為標定特征量,并對其關聯(lián)性進行比較分析。研究表明,4種典型缺陷的特高頻信號積累能量與其視在放電量平方均存在較好的一次函數(shù)關系,且油紙絕緣缺陷的類型與外加實驗電壓的大小均會影響標定回歸曲線的擬合優(yōu)度,因此對于特高頻信號的標定評價必須考慮具體的放電類型與條件進行綜合考核。研究結(jié)果豐富了變壓器油中局放的特高頻檢測數(shù)據(jù)庫,為油中局放特高頻標定的進一步研究提供有利參考。
[Abstract]:In order to study the problem of signal quantization calibration of oil immersed transformer partial discharge UHF detection technology, a typical partial discharge defect model was built in artificial simulated transformer and related experiments were carried out. At the same time, four kinds of partial discharge and UHF signal accumulation energy of typical defects in oil under different discharge voltages were extracted as calibration characteristic quantities, and their correlation was compared and analyzed. The results show that the UHF signal accumulation energy of four typical defects has a good primary function relationship with the square of the apparent discharge quantity. The type of oil-paper insulation defect and the magnitude of applied experimental voltage will affect the goodness of fit of calibration regression curve. Therefore, the specific discharge types and conditions must be considered in the calibration evaluation of UHF signals. The results enrich the UHF detection database of partial discharge in transformer oil and provide a useful reference for the further study of UHF calibration.
【作者單位】： 國網(wǎng)湖南省電力公司經(jīng)濟技術研究院;重慶大學輸配電裝備及系統(tǒng)安全與新技術國家重點實驗室;
【分類號】：TM855

【參考文獻】

相關期刊論文 前10條

1 周遠翔;王明淵;張云霄;聶德鑫;伍志榮;鄧建鋼;;雷電沖擊電壓下典型油紙缺陷局部放電特征[J];高電壓技術;2015年11期

2 陳孝信;錢勇;盛戈v，

本文編號：2244232