| 朱梦梦,林聪,朱全聪,翟少磊,钟尧,李毅,于辉,程富勇,何兆磊.CVT电容量变化对计量准确度的影响分析[J].,2018,46(5):69-71. |
| CVT电容量变化对计量准确度的影响分析 |
| Analysis of the inlfuence of CVT capacitance variation on measurement accuracy |
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| DOI： |
| 中文关键词: 计量准确度 电容量 二次电压 击穿 误差 状态评估 |
| 英文关键词: measurement accuracy capacitance two voltage breakdown error state assessment |
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| 中文摘要: |
| 电容式电压互感器计量准确度是关口电能贸易结算的重要依据,其准确度的受内外绝缘参量影响,但是CVT的电容量的变化是影响其准确度的关键因素.本文结合CVT的原理和现场实际情况,考虑了高压电容和低压电容同时击穿的可能性,通过理论分析CVT高压电容、低压电容元件击穿个数与电容量变化率以及二次侧电压的映射关系,为CVT计量准确度的实时状态评估提供理论基础. |
| 英文摘要: |
| The accuracy of capacitance voltage transformer is an important basis for the settlement of gateway electricity trade. Its accuracy is affected by internal and external insulation parameters, but the change of capacitance of CVT is the key factor affecting its accuracy. Based on the CVT principle and the actual situation, considering the possibility of high capacitance and low voltage capacitor breakdown at the same time, analysis of CVT high voltage capacitor, low voltage capacitor breakdown changes with the number of capacitance ratio and two side voltage through theory, provide a theoretical basis for the evaluation of real-time measurement accuracy of CVT. |
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