【摘要】：為推廣局部表面電導(dǎo)率法在絕緣子污穢程度評(píng)估中的應(yīng)用,結(jié)合試驗(yàn),介紹并比較了2種測量儀器的工作方法和應(yīng)用性能。2種儀器均為通用儀器,1種是由調(diào)壓器、精細(xì)電阻構(gòu)成的簡易測量系統(tǒng),另1種是專用電阻測量儀器。采用這2種儀器對(duì)玻璃板上不同污穢的局部表面電導(dǎo)率值進(jìn)行了測試,結(jié)果顯示:不同的測量裝置及電極型式對(duì)相同污穢度表面的局部表面電導(dǎo)率測量值的影響很小;在0.05~0.40 mg/cm2的鹽密范圍內(nèi),2種儀器測量的表面電導(dǎo)率的最大差異1%,而采用矩形電極和圓形電極的測量結(jié)果差異3%;電源頻率對(duì)局部表面電導(dǎo)率有較大影響,頻率增大10倍時(shí),局部表面電導(dǎo)率會(huì)增加約10%;電源電壓對(duì)局部表面電導(dǎo)率幾乎沒有影響,1V與20 V電源電壓的局部表面電導(dǎo)率測量值差異約為1%。試驗(yàn)表明,局部表面電導(dǎo)率法在實(shí)際應(yīng)用中簡易可行且準(zhǔn)確度高,有較好的應(yīng)用前景。
[Abstract]:In order to popularize the application of local surface conductivity method in the assessment of insulator contamination degree, combined with the test, this paper introduces and compares the working methods and applied performance of two kinds of measuring instruments. The simple measuring system is composed of fine resistance, and the other is a special resistance measuring instrument. The results show that different measuring devices and electrode types have little influence on the local surface conductivity of the same polluted surface. The maximum difference of surface conductivity measured by the two instruments in the salt density range of 0. 05 ~ 0. 40 mg/cm2 is 1, and the difference between the measured results of rectangular electrode and circular electrode is 3. The frequency of power supply has a great influence on the local surface conductivity, and when the frequency increases 10 times, The local surface conductivity will increase by about 10 percent, and the local surface conductivity measurement value of 1V and 20V power supply voltage will have little effect on the local surface conductivity. The difference between the local surface conductivity measurements and the local surface conductivity values is about 1. The experimental results show that the method of local surface conductivity is simple, feasible and accurate in practical application, and has a good prospect of application.
【作者單位】： 清華大學(xué)深圳研究生院;中國南方電網(wǎng)有限責(zé)任公司科學(xué)研究院;
【基金】：國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973計(jì)劃)(2009CB724503) 南方電網(wǎng)公司重點(diǎn)科技項(xiàng)目(編號(hào)略)~~
【分類號(hào)】：TM934.16

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 賀博;林輝;;絕緣子污穢閃絡(luò)的研究現(xiàn)狀及思索[J];電瓷避雷器;2006年02期

2 關(guān)志成，，崔國順，董穎;局部表面電導(dǎo)率法及其應(yīng)用[J];電瓷避雷器;1994年02期

3 高航;2001年初河南電網(wǎng)發(fā)生污閃事故的原因與防范措施[J];電網(wǎng)技術(shù);2001年10期

4 劉琰,王俊鍇;陜西電網(wǎng)“12·18”大面積污閃事故的分析及其防治對(duì)策[J];電網(wǎng)技術(shù);2002年01期

5 殷瓊;陳原;;高導(dǎo)電性降水降雪型快速積污導(dǎo)致的輸變電設(shè)備污閃機(jī)理與防治措施[J];電網(wǎng)技術(shù);2008年04期

6 陳偉根;夏青;李t熝

本文編號(hào)：2201538