感应式电表计量误差分析与解决

随着电力电子技术的发展,各种负载日益增加,其非线性、冲击性以及不平衡性等使供电系统电流、电压发生畸变。感应式电能表由其制造原理决定它只能保证在电压、电流为纯正弦波,且所加电压为工频及其附近很窄的频率范围内有满足测量准确度等级的工作性能,故在供电系统受谐波污染环境下,感应式电能表的计量准确性将受到影响。因此,评估感应在谐波的下性,是判断其在现代电能管理中是否能继续发挥作用的重要依据。

Along with the development of electric power and electronic technology, each kind of load increases day by day, its non-linearity, the impact as well balanced and so on causes the power supply system electric current, the voltage to have the distortion. The induction-type electrical energy table by its manufacture principle decided it only can guarantee in the voltage, the electric current is the pure wave, also adds the voltage and its neighbor in the very narrow frequency range, has for the labor frequency satisfies the survey accuracy rank the perating performance, therefore in the power supply system under the overtone pollution environment, the induction-type electrical energy table measurement ccuracy is received the influence. Therefore, appraised induces in the overtone under nature, it＇s the important basis to judge whether can continue to play role in the modern electrical energy management.