| With the wide application of the new rectifier equipment, intensive grid impact load continuously operational and supply imbalance distribution line itself, intensified harmonic pollution, phase unbalance, voltage and frequency deviation of power quality problems for the normal operation of the power grid has brought serious harm. Therefore, the grid power quality real-time monitoring has very important significance.This paper analyzes the development of power quality problems at home and abroad to the national series of power quality criteria, designed collection terminal based on embedded power quality monitoring system, and using LabVIEW realizes the power quality analysis and display. Among them, parameter monitoring and metering terminal for Arduino Due ATT7022 C dual-core chip architecture core, to reach high-precision measurement of three-phase voltage, current, power, frequency, phase imbalance and other parameters, analysis and transmission. PC monitoring software enables the calculation of the electrical parameters,display, alarm and harmonic analysis, to arrive at a comprehensive evaluation of power quality indicators.In this paper, with voltage deviation, frequency deviation, phase unbalance and harmonic analysis, design a feasible power quality monitoring system. The tests show that this system can achieve high accuracy request of power quality monitoring,provides the security and stability of the power grid operation support. |
PDF Full Text Request