wattless power meaning in English

无功功率

In this way , the wattless power of the test signal at the head spot of the fault is only needed to sample when the system fault occurs , which simplifies the measurement
这样，当系统发生故障时，只需采集故障首端测试信号的无功功率，大大地简化了测量的方法。
This paper explicitly describes the optical measurement of the electric parameters in the high - voltage electric power system , and an optic fiber large current sensor based on farady magnetooptic effect and an optic fiber high voltage sensor based on the linear transformation characteristic of led are developed from research on both theory and experiments . by combining the two sensors to form a synchronous system , the task of harmonic analysis , phase demodulation , power and wattless power computation is accomplished , which helps to monitor and control the electric power system
本文详细论述了电力系统高压电网电参量的光学测量的一种实现方法，从理论和实验两方面研究了基于farady磁光效应的光纤电流传感器及基于led线性电光转换特性的光纤电压传感器，并联合两种传感器形成了电压、电流的同步测量系统，实现了谐波分析、鉴相及有功、无功功率的计算，可对电能质量进行监控。