Abstract
Poor power quality creates big problems. With the poor power quality, the service life of the equipment is reduced. In connection with the creation and development of intelligent electrical power systems and the digital economy, the requirements for the power quality are increasing. Active harmonic filters began to used to solve problem with the poor power quality. The paper presents a methodical approach and computer programs for determining the power of the active harmonic filter. The power supply system of the Vietnamese coal sorting plant is considered to develop the methodical approach. The results of measurements of the power quality indices and the results of calculating the parameters of the modes of the electrical network of the plant at the fundamental frequency were used. To process a large amount of measured information, the special computer program was developed. On the basis of the methodical approach, the results of measurements of the power quality indices and the computer complex “Stationary permissible optimal mode”, the algorithm and the computer program have been developed to calculate the power of the active harmonic filter. The power of the active harmonic filter for the coal sorting plant was determined with the help of this program.
Highlights
Poor power quality creates huge problems for both power supply companies and consumers
The paper presents the methodical approach to the selection of active harmonic filters, the computer program to analyze the results of measurements of the power quality indices and operation mode parameters, and the computer program to calculate the power of the active harmonic filter
Based on the methodical approach presented above, the results of measurements of power quality indices and the “Steady-state allowable optimum operation mode” software package [13], we have developed the computer program for calculating the power of the active harmonic filter [14]
Summary
Poor power quality creates huge problems for both power supply companies and consumers. When the power quality is poor, the service life of equipment shortens and additional economic damage occurs [4,5,6]. Active harmonic filters have become adopted to solve problems with the value and non-sinusoidal form of the voltage [7,8]. The paper presents the methodical approach to the selection of active harmonic filters, the computer program to analyze the results of measurements of the power quality indices and operation mode parameters, and the computer program to calculate the power of the active harmonic filter. The methodical approach and programs are illustrated by their use for the selection of the active harmonic filter for the power supply system of the coal grading plant of the Vietnamese company “Cua OngVinacomin”
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