Автореферат на дисертацията - Технически Университет - София

Автореферат на дисертационен труд на тема „Анализ на качеството на ел.енергия в разпределителни мрежи с ДЕИ”ANALYSIS OF THE QUALITY OF THE ELECTRIC POWER IN DISTRIBUTION GRIDS WITHCONNECTED DECENTRALIZED ENERGY SOURCEThe main purpose of this research is to specify the influencing factors upon the indicators for quality of thevoltage in the electric grid for MV and LV by datas of operation and to optimize the parameters modes intoconnecting branches.More significant problems by reaching the purpose are as follows:- It is necessary method for evaluation on the impact of the influencig factors upon the indicatorsof voltage quality;- In the method for analysis on the impact of decentralized energy source (DES) upon theindicators of quality of the voltage must using the opportunities for tracking and assaying of the qualityindicators of the voltage in operating conditions, taking into account the technical characteristics of therelevant electric plant.The tasks to solve in the present study are:- Projection of the impact factors upon indicators for quality of the electricity into electric gridwith DES;- Compilation methodology to evaluation of the impact of influencing factors upon qualityindicators of the voltage;- Adaptation of the method for analysis of the influence of RES upon the indicators for quality ofthe voltage with using of opportunities for their following and assaying in operating conditions, taking intoaccount the tehnical caracteristics of the photovoltaic power plant and wind generators.- Identify events for optimizing DES work in order to improve of indicators quality of the voltageinto connecting grids.In the first part of the research is specify the influencing factors upon the indicators for quality of theelectric energy into distribution grids with connected DES. Is composed metodology for evaluation of theimpact of influencing factors upon the quality voltage. Is developed Excel and Matlab calculator for quickcalculation, based on this metodology. In second third and fourth part is making a quantitave assessment overthe quality indicators of the voltage in particular electric – distribution grid LV and MV, to wich it isconnected existing Photovoltaic power plant and wind generators.Metodological are showing the opportunities for following and analysing of the quality indicators of thevoltage in the operating conditions as taking into account the technical features of the relevant power plant.Compared to analytical obtained results with these, obtained by computer simulation and the measurementresults by real exploatation on the equipments.In the last part are making conclusions, comparisons and recommendations for raising of the quality of thegrid, and optimization of affected equipments.ТУ-София, ИПФ-Сливен Стр. 35 от 35 гр.Сливенмаг.инж.Светослав Мартон 24.10.2013 г.