本文選題：電容分壓器　切入點(diǎn)：分壓電容　出處：《電測與儀表》2015年23期 　論文類型：期刊論文

【摘要】：針對掛網(wǎng)運(yùn)行中的高壓電能表中電容分壓器長期穩(wěn)定性較差的問題,提出一種多級串聯(lián)結(jié)構(gòu)的干式電容分壓器,并對其分壓電容進(jìn)行7 000h加速電壓老化試驗(yàn)、溫度試驗(yàn)和取能試驗(yàn)。試驗(yàn)結(jié)果表明,分壓電容容量隨電壓老化時(shí)間不斷衰減,且衰減分散性較大,試驗(yàn)初期衰減較快、后期趨緩,衰減特性可用高斯函數(shù)進(jìn)行擬合,因此可通過電壓加速老化和篩選分散性較小分壓電容的方式提高電容分壓器的長期穩(wěn)定性;溫度系數(shù)對電容分壓器的影響較小,在計(jì)量精度允許范圍內(nèi);取能電容分壓器有穩(wěn)定的功率輸出,能夠滿足高壓電能表中高電位電子線路的功耗要求。文章試驗(yàn)結(jié)論為高壓電能表的穩(wěn)定、可靠運(yùn)行提供了技術(shù)支撐。
[Abstract]:In order to solve the problem of poor long-term stability of capacitor divider in high voltage watt-hour meter (HWW), a multi-stage series structure dry capacitor divider is proposed, and the voltage aging test of its voltage divider is carried out for 7 000 h. The experimental results show that the capacitance capacity of partial voltage decreases continuously with the aging time of voltage, and the attenuation dispersion is larger, the attenuation is fast at the beginning of the test, and the attenuation characteristic can be fitted by Gao Si function. Therefore, the long-term stability of the capacitor divider can be improved by the way of accelerating aging voltage and screening the capacitor with less dispersibility, and the temperature coefficient has little effect on the capacitance divider, and the measurement accuracy is allowed. The capacitive divider has stable power output, which can meet the power consumption requirement of high potential electronic circuit in high voltage watt-hour meter. The test results provide technical support for the stable and reliable operation of high voltage watt-hour meter.
【作者單位】： 武漢大學(xué)電氣工程學(xué)院;武漢國測恒通智能儀器有限公司;
【分類號】：TM933.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 江正平;;電容器加速壽命試驗(yàn)的電壓加速指數(shù)[J];電力電容器;2007年01期

2 王曉琪;吳春風(fēng);栗剛;余春雨;李t，

本文編號：1585257