Distributed Power Quality Conditioning System for Three-Phase Four-Wire Low Voltage Networks

Valery Dovgun, Sergei Temerbaev, Maxim Chernyshov, Viktor Novikov, Natalia Boyarskaya and Elena Gracheva
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Valery Dovgun: Institute of Space and Information Technologies, Siberian Federal University, 26 Kirensky st., 660074 Krasnoyarsk, Russia
Sergei Temerbaev: Institute of Space and Information Technologies, Siberian Federal University, 26 Kirensky st., 660074 Krasnoyarsk, Russia
Maxim Chernyshov: Engineering Company of Siberia, 93 Kuibyshev st., 660018 Krasnoyarsk, Russia
Viktor Novikov: Institute of Space and Information Technologies, Siberian Federal University, 26 Kirensky st., 660074 Krasnoyarsk, Russia
Natalia Boyarskaya: Institute of Engineering Systems and Power, Krasnoyarsk State Agrarian University, 2 Kirensky st., 660074 Krasnoyarsk, Russia
Elena Gracheva: Institute of Electric Power Engineering and Electronics, Kazan State Power Engineering University, 51 Krasnoselskaya st., 420066 Kazan, Russia

Energies, 2020, vol. 13, issue 18, 1-19

Abstract: This paper presents distributed power quality conditioning system to compensate current and voltage distortions in three-phase four-wire networks caused by unbalanced non-linear single-phase loads. The proposed conditioning system consists of several hybrid filter units installed in various nodes for compensation of excessive neutral currents and voltage distortions in a selected area of the distribution network. The system is open and it can be easily modified by installation of new filter units. A novel hybrid filter design procedure based on filter frequency characteristics optimization in the parameters of passive and active parts is presented. A digital system of control signal computation for active filters based on the use of modern methods of spectral analysis is considered. The proposed digital control system enables selective compensation of fundamental and harmonic components. The mathematical model of the proposed power quality conditioning system is developed in the MatLab software. The simulated results show that the presented conditioning system reduces the level of neutral conductor currents and the voltage unbalance as well ensures harmonic compensation in three-phase four-wire networks.

Keywords: power quality; harmonics; hybrid power filter; neutral current attenuation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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