直流泄漏電流測(cè)量中存在的問題分析
曹小龍1,張治武2,曹小虎2,樊彥明1,吳棟梁1
1 天水供電公司,甘肅 天水 741020;2 甘肅省電力公司檢修公司,甘肅 蘭州 730000
摘 要:介紹了直流泄漏電流測(cè)量中存在的各種問題及其對(duì)直流泄漏電流產(chǎn)生的影響。以金屬氧化物避雷器(MOA)直流泄漏電流測(cè)量為例,分析了現(xiàn)場(chǎng)測(cè)量中電壓值的選取、微安表位置的設(shè)置、試驗(yàn)電壓測(cè)量等常見問題及測(cè)試結(jié)果失真的原因,并提出了測(cè)量過程中的一些注意事項(xiàng),以促使測(cè)量水平的進(jìn)一步提高。
關(guān)鍵詞:直流泄漏電流;測(cè)量;金屬氧化物避雷器
中圖分類號(hào):TM933.12 文獻(xiàn)標(biāo)識(shí)碼:B 文章編號(hào):1007-3175(2013)04-0049-03
Analysis of Problems Existed in Direct Current Leakage Current Measurement
CAO Xiao-long1, ZHANG Zhi-wu2, CAO Xiao-hu2, FAN Yan-ming1, WU Dong-liang1
1 Tianshui Power Supply Company, Tianshui 741020, China;
2 Gansu Power Grid Maintenance Overhaul Company, Lanzhou 730000, China
Abstract:Introduction was made to various kinds of problems existed in direct current leakage current measurement and its impacts on direct current leakage current. Taking the metal oxide arrester (MOA) for example, this paper analyzed the selection of voltage measurement value on site, positional setting of microammeter, measurement of testing voltage etc common problems, and the reasons of testing result distortion, presenting several cautions to make the level of measurement improved further.
Key words: direct current leakage current; measure; metal oxide arrester
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