In order to satisfy the real - time measurement, we studied the fast arithmetic of virtual value of voltage and current, power factor.

为了满足实时检测要求，研究了计算电压、电流有效值和功率因数的快速演算法。

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Using the method of window moving in real time, the root mean square value of current of the last cycle was calculated as the criteria for instantaneous overcurrent protection.

用窗口实时移动的思想计算当前时刻以前一周波电流方均根值平方作为瞬动脱扣的判断依据。

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Using the method of window moving in real time, the root mean square value of current of the last cycle was calculated as the criteria for instantaneous overcurrent protection.

用窗口实时移动的思想计算当前时刻以前一周波电流方均根值平方作为瞬动脱扣的判断依据。

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