本文選題：電力行業(yè)標(biāo)準(zhǔn)　切入點(diǎn)：電容電流測量　出處：《電力系統(tǒng)自動化》2017年01期

【摘要】：指出并驗(yàn)證了電力行業(yè)標(biāo)準(zhǔn)中"三異頻等幅電流阻抗法"計算電容和電容電流公式的錯誤,推導(dǎo)得出了正確的計算公式。此外,針對從電壓互感器開口三角注入異頻電流測量電容電流方法存在效率低、安全性及準(zhǔn)確性不高等缺點(diǎn),提出了一種從電容器組中性點(diǎn)注入異頻電流測量電容電流的方法,通過數(shù)學(xué)理論推導(dǎo)、模擬試驗(yàn)和現(xiàn)場測試對該方法的準(zhǔn)確性進(jìn)行驗(yàn)證,同時由模擬試驗(yàn)結(jié)果分析了各種因素對新方法測試誤差的影響。
[Abstract]:This paper points out and verifies the error of "three different frequencies equal amplitude current impedance method" in the standard of electric power industry, and deduces the correct formula for calculating capacitance and capacitive current. In view of the disadvantages of low efficiency, low safety and low accuracy, a method of measuring capacitance current by injecting different frequency current from the neutral point of capacitor bank is proposed, aiming at the shortcomings of measuring capacitance current by injecting different frequency current into the opening triangle of voltage transformer, and the method of measuring capacitance current by injecting different frequency current from neutral point of capacitor bank is presented. The accuracy of the method is verified by mathematical theory derivation, simulation test and field test. At the same time, the influence of various factors on the test error of the new method is analyzed by the result of simulation test.
【作者單位】： 國網(wǎng)江西省電力科學(xué)研究院;武漢理工大學(xué)自動化學(xué)院;
【分類號】：TM930

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