Design and Implementation of Single-phase Power Quality Monitor Based on IM1281B

Abstract

In order to better analyze the influence of electrical equipment on power grid fluctuations, a detection system is designed for power quality monitoring. The system uses 51 single-chip microcomputer as the control core, combined with IM1281B single-phase mutual inductance energy metering module, to collect real-time voltage RMS, current RMS, power factor, apparent power, active power and other electrical parameters of electrical equipment connected to the grid. The standard Modbus-RTU is used for communication between IM1281B and the single-chip microcomputer, which realizes the real-time acquisition and processing of multiple electrical parameters of the electrical equipment connected to the power grid. The experimental results show that, the single-phase power quality monitor designed based on IM1281B is simple in structure, and relatively complete in collecting electrical parameters, which can meet the needs of power quality analysis.

Design of On-line Monitoring System for Photovoltaic Power Generation Power Quality Based on Stm32

“…Then, SPI starts to read the sampled value The hardware design principle of the current signal conditioning circuit is shown in Figure 5. It is a bootstrap, non-inverting AC amplifier circuit [5] , and the cores are two amplifiers. The secondary side current transmitted by the transformer is weak, the driving load capacity is weak, and the current signal transmission is blocked.…”