CASPIAN JOURNAL
MANAGEMENT AND HIGH TECHNOLOGIES
Autonomous electric supply systems in remote areas: justification of use expediency and the methods of estimating electricity quality indices based on simulation modeling
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Read | Asiev A.T. Autonomous electric supply systems in remote areas: justification of use expediency and the methods of estimating electricity quality indices based on simulation modeling // Caspian journal : management and high technologies. — 2017. — №3. — pp. 80-94. |
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Asiev A.T. - Cand. Sci. (Engineering), Kyrgyz State Technical University named I. Razzakov, 66 Chingiz Aytmatova Ave., Bishkek, 720044, Kyrgyz Republic, asievat@gmail.com
This article analyzes current state and prospects of autonomous electric supply systems in the Kyrgyz Republic, as well as the main tendencies in the development of energy consumption and the use of existing energy sources in the Kyrgyz Republic and abroad. The expediency of using non-traditional renewable energy sources in remote and hard-to-reach (especially mountain ones) areas where there are no power lines is shown. The influence of the electric power quality indicators in the autonomous electric supply system (AESS) on the technical and economic parameters of the electric energy receivers is considered. The quality of electric energy is influenced by all elements of the AESS and the load. In order to study such indicators of the electric energy quality as steady and transient voltage deviations, steady and transient frequency deviations, asymmetry of the stress system and amplitude modulation of the voltage, it is necessary to apply mathematical models that make it possible to simulate and conduct an analysis of steady and transient modes under symmetrical and asymmetrical operating conditions. For the study, a mathematical model of a synchronous three-phase generator having a rotor winding of excitation and a damper winding with contours along the longitudinal and transverse axis is applied. During the simulation modeling of the AESS, we applied a block principle with the models of the AESS basic elements that are already available in MATLAB R2010b, which allowed creating complex object-oriented models from the individual submodels. The obtained models can be easily expanded and transformed according to the degree of the AESS complexity.
Key words: автономные источники электроснабжения, электроэнергия, показатели качества, математические методы, имитационное моделирование, MATLAB, Simulink, синхронный генератор, влияние нагрузки, объектно-ориентированные модели, autonomous electric supply sources, e