用电信息采集终端电压测量方法研究

Study of Voltage Measurement Method in Electric Energy Data Acquisition Terminal

针对用电信息采集终端长期运行后电压测量误差容易超差的现象,本文在分析电能表和终端测量方案误差的基础上,指出终端电压测量误差变化量为负的原因。本文提出了一种改进的终端电压测量方法,满足电压测量对电气隔离和测量精度的要求。

The voltage measurement error of electric energy data acquisition terminal tends to be bigger after long-term operation. This paper analyses the measurement error in electric energy meters and terminals. Then the reason of negative error variety is pointed out. Finally, an improved voltage measurement method in terminals is proposed, which meets the requirement of electrical isolation and measuring accuracy.