An overview of modern compensation devices for a distribution network is presented in the study. With a proper control strategy and regulation algorithm, these devices enable flexible compensation of reactive power, harmonics, unbalances and voltage fluctuations in a distribution network. The aim of the study was to illustrate the effectiveness of these devices in tackling power quality issues in a characteristic distribution network in Slovenia.
F.17 Transfer of existing technologies, know-how, methods and procedures into practice
COBISS.SI-ID: 7033940The study presents a method for estimating the priority of new investments in distribution networks from a technical and economic standpoint. The analysis focuses on overhead line-to-cable reconstructions which are due to the expected enhanced reliability and quality of electricity supply. According to the systematic analysis of network reliability, reconstruction locations where the reliability objectives can be achieved are recommended. The study is important for proper understanding of the influence of an increased share of cable network on operation of compensation devices.
F.17 Transfer of existing technologies, know-how, methods and procedures into practice
COBISS.SI-ID: 6909780A method for managing the responsibility for harmonic distortion at the point of common coupling between a customer and a utility is presented in the dissertation of Tomaž Pfajfar. The proposed approach is based on the harmonic current vector method and uses reference impedances. The method enables harmonic contribution determination when the actual harmonic customer impedances are not known. It also improves the evaluation of harmonic distortion in resonance conditions. The method is verified by means of computer simulation and field measurements. The supervisor is prof. dr. Igor Papič.
D.09 Tutoring for postgraduate students
COBISS.SI-ID: 6994260The paper analyzes the influence of distributed energy resources (DER) on distribution network voltage profile. A general description of the impact of DER on voltage profile is given and three advanced voltage control techniques are discussed. The aim was to maximize and facilitate DER integration. The influence of DER on voltage profile and the effectiveness of the investigated solutions were evaluated by means of simulation in DIgSILENT. The simulated network was an actual distribution network in Slovenia with a relatively high penetration of distributed generation.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 7305044Due to the presence of large number of reactive power compensators at different voltage levels in a typical industrial network, many combinations of the settings of compensators are possible, all of which are not appropriate in terms of harmonic conditions in the network. In this paper a concept of virtual compensator is proposed, addressing the above issues of reactive power compensation in industrial networks. The effectiveness of the proposed algorithm is demonstrated on the realistic industrial network model by means of simulation.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 7967060