数字式多路电能集中计量装置

A digital multicircuit central metering unit for measuring electric energy

本文介绍一种以 80 c1 96kc为核心的数字式多路电能集中计量装置。在此装置中利用 80 c1 96kc的 PTS功能分时对电压、电流信号进行高频率交流采样 ,然后独立计算电压、电流有效值和功率因数 ,求积后得到电能。与其他同类装置相比 ,该装置具有硬件成本低 ,计量精度高 ,软件编制容易等优点 ,易于推广使用。

This paper presents a digital multicircuit central metering unit for measuring electric energy with the 80C196KC microcontroller.By using the 80c196kc PTS function,this metering unit performs the high frequency alternating sampling in a timesharing way for current and voltage.The effective values of the current,voltage and power factor are calculated independently and then multiplied to get the electric energy.Compared with the other similar metering device, this metering unit has certain advantages,such as a low cost in hardware,high accuracy and easily making programs.In addition,it is easy to spread the use of it.