Abstract:the turn-to-turn short circuit of large power system transformer fault of 50% 60%,due to
the turn-to-turn short circuit when the short circuit current can be up to several dozen times the
rated current,conductor and insulation of transformer has serious harm,a three-phase current did not increase significantly,so current transformer main protection action to bring very great difficulty.Based on the transformer insulation resistance,absorption ratio and dcresistance,dielectric loss,insulating oil chromatographic analysis of test result judgment of transformer fault type,provide reference basis for similar transformer fault diagnosis.
Keywords:transformer high-voltage test chromatographic analysis
摘要：變壓器匝間短路占電力系統(tǒng)中大型變壓器故障的50%-60%,由于匝間短路時短路電流可達額定電流的幾十倍,對變壓器的導體和絕緣材料有嚴重的危害,三相一次電流并未顯著增大,因此給變壓器現(xiàn)行主保護動作帶來了很大困難.本文結合變壓器絕緣電阻、吸收比、直流電阻、介質損耗、絕緣油色譜分析試驗結果判斷變壓器故障類型,為類似變壓器故障判斷提供借鑒依據(jù).
關鍵詞：變壓器 高壓試驗 色譜分析