鐵銹對(duì)介質(zhì)損耗值測(cè)量的影響及其電阻特性分析
徐炎斌,吳祖現(xiàn)
(廣東電網(wǎng)有限責(zé)任公司江門供電局,廣東 江門 529000)
摘 要: 介質(zhì)損耗因數(shù)是判斷電力設(shè)備絕緣性能的重要依據(jù),分析了接觸不良導(dǎo)致的介質(zhì)損耗因數(shù)測(cè)量值偏大的原因。通過(guò)試驗(yàn),對(duì)比了鐵銹和不同阻值碳膜電阻對(duì)介質(zhì)損耗測(cè)量的影響差異。結(jié)果表明,不同試驗(yàn)電壓下,鐵銹表現(xiàn)出與碳膜電阻不一樣的電阻特性。
關(guān)鍵詞: 鐵銹;接觸電阻;介質(zhì)損耗因數(shù);絕緣電阻
中圖分類號(hào):TM835.4 文獻(xiàn)標(biāo)識(shí)碼:B 文章編號(hào):1007-3175(2015)05-0041-03
Influence of Rust on Measurement of Dielectric Loss and Its Resistance Characteristic Analysis
XU Yan-bin, WU Zu-xian
(Jiangmen Power Supply Bureau of Guangdong Power Grid Co., Ltd, Jiangmen 529000, China)
Abstract: The dielectric loss factor is the important basis to judge insulating property of electrical equipment. This paper analyzed the reason of the test value of bigger dielectric loss factor caused by bad contact. Via the simulation test, effect on the test results between rust and different carbon film resistors was compared. The result shows that under different test voltage, the resistor characteristic of rust is different from that of carbon film resistor.
Key words: rust; contact resistance; dielectric loss factor; insulation resistance
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