Hybrid compensation method for comprehensive control of power quality management

Abstract

The invention provides a hybrid compensation method for comprehensive control of power quality management. The method comprises: monitoring changes of voltage and current in a power system in real time, and then collecting a voltage waveform and a current waveform at the current moment; calculating a current component through discrete Fourier transform; and calculating electric power parameters such as reactive power, active power, apparent power, a power factor, harmonic voltage and the distortion rate of each order, harmonic current and the wave distortion rate of each order in combination with the voltage then. The main control module is communicated with the compensation equipment, the main control module operates according to the electric power parameters, preferentially operates theharmonic filtering mode and then operates the reactive compensation mode, and meanwhile, the harmonic filtering mode operates all the time, so that the performance is good.

Description

technical field [0001] The invention relates to the technical field of electric energy management, in particular to a mixed compensation method for comprehensive control of electric energy quality control. Background technique [0002] With the rapid progress of electrification in today's society, both the power supply end and the power consumption end have begun to integrate into the trend of electrification. Users at the power consumption end have used many electrical equipment with good performance and high efficiency. However, the requirements of these electrical equipment for the grid Higher and higher, the original power quality environment can no longer meet the increasingly refined electrical equipment, mainly reflected in reactive power compensation, harmonics, inter-harmonics, frequency changes, DC in the AC network, voltage flicker, inrush current, three Power quality problems such as phase imbalance require power quality governance to move towards a comprehensive...

AI Technical Summary

Problems solved by technology

[0002] With the rapid progress of electrification in today's society, both the power supply end and the power consumption end have begun to integrate into the trend of electrification. Users at the power consumption end have used many electrical equipment with good performance and high efficiency. However, the requirements of these electrical equipment for the grid Higher and higher, the original power quality environment can no longer meet the increasingly refined electrical equipment, mainly reflected in reactive power compensation, harmonics, inter-harmonics, frequency changes, DC in the AC network, voltage flicker, inrush current, three Power quality problems such as phase imbalance, which requires power quality governance to move towards the direction of comprehensive, green and intelligent

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