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The Use of the Power Transformers for the Regulation of the Power System Operation


Author: Golub Irina
Degree:doctor of engineering
Speciality: 05.14.01 - General power engineering, power systems
Year:2021
Scientific adviser: Vladimir Berzan
doctor habilitat, professor, Institute of Power Engineering of the ASM
Institution: Technical University of Moldova

Status

The thesis was presented on the 9 September, 2021
Approved by NCAA on the 22 December, 2021

Abstract

Adobe PDF document – 1.18 Mb / in romanian
Adobe PDF document – 1.47 Mb / in english
Adobe PDF document – 1.19 Mb / in russian

Thesis

CZU 621.314(043)

Adobe PDF document 6.38 Mb / in russian
191 pages

Keywords

phase-shifting transformer, mathematic modeling, structural-simulation modeling, strategy of control, power characteristics, combined FACTS, laboratory sample Region of study: technical sciences

Summary

Dissertation for awarding the doctor-degree in the region of technical sciences, speciality 221.01. Power systems and technologies. Chisinau, 2020.

Structure of the work: the dissertation includes introduction; five chapters; conclusions; references, which contain 168 sources and 7 appendices; there are 190 pages of the main text; 15 tables and 117 figures; 18 scientific works are published based on the research results.

Target of dissertation: The development of FACTS-controllers based on the phase regulation and study of their mode characteristics using means of mathematic and structuralsimulation modeling, as well as the approbation of solutions that ensure improvement of the technical characteristics of the objectives under consideration.

Dissertation tasks: Creation of schematic variants of the FACTS-controllers under the phase control based on the power electronics and their study on the basis of mathematic, structural-simulation and physical models for the purpose of approbation of the decisions taken and optimization of the constructive and technical parameters of the devices.

Scientific novelty of the work: consists in the development of the research and optimization of the parameters of the FACTS-controllers schematic variants with a phase regulation.

Scientific problem solved: consists in determination and optimization of constructive and technical characteristics of the FACTS-controllers based on the phase control, which allow the efficiency, flexibility and reliability of the work of the joined power systems to be improved in the context of introduction into the SMART GRID.

Theoretic importance: The results of the work can be a stimulus for the theoretic investigations in the sphere of development, creation and application of the FACTS-controllers regulated by means of the power electronics as a basis for the intellectual actively-adaptive networks.

Application relevance of the work: Materials of the work can serve as a basis for the development and design of the means of control for the modes of intersystem (interstate) connections to solve problems of diversification of the electric energy supplies and liberalization of the energy market in Moldova Republic.