Renewable energy sources and storage batteries for electrification of Russian decentralized power supply systems

The use of renewable energy sources (RES) and storage batteries (SB) in decentralized power systems is a cost-effective way to supply power to consumers. In this case, storage batteries are one of the most important system components. The significance of storage batteries is conditioned by a stabilizing effect obtained at generation from RES that are defined by stochastic oscillating functions. However, it is worth noting that storage batteries also improve the cost-effectiveness of such systems by reducing consumption of diesel fuel. This is particularly noticeable at night when load is the least and the use of diesel generators is inefficient. One of the most important points is the determination of potential internal processes of aging and breakdowns that occur in storage batteries during operation. The use of a tested model for categorization of storage batteries according to the operating conditions makes it possible to take account of these factors at the stage of a system design. The paper presents a detailed analysis of decentralized power supply system Verkhnyaya Amga. The focus is made on the cost-effectiveness of a combined use of RES with storage batteries, annual saving of diesel fuel, operating parameters. The research reveals hidden problems that represent various uncertainties that affect greatly the economic and operation parameters of the system.

Renewable Energy Sources in the Decentralized Power Supply System of Several Districts in Cote dIvoire

The article summarizes the results of research works carried out by the authors on matters concerned with assessment of decentralized energy. The main aim of the study was to estimate the influence of decentralized generation on the life activities of the selected districts and the country as a whole. To identify the effects from introduction of decentralized generation technologies, a case study analysis method was used. The analysis was carried out on the basis of 3 from 14 districts of Côte d’Ivoire, which are the least electrified points and are regarded to be strategic ones in transporting power to the neighboring countries. As a result of the study, technological, economic and social effects have been identified. The technological effects include achieving better reliability of power supply, reducing the environmental burden, including emissions and others. The economic and social effects are that power supply becomes available to consumers, and the electricity becomes cheaper.

MODELING THE DECENTRALIZED POWER SUPPLY SYSTEM OF AN OIL AND GAS PRODUCTION ENTERPRISE

В связи с интенсивным развитием децентрализованных систем электроснабжения в районах добычи нефти и газа следует ожидать появления активных потребителей, использующих для поставок электроэнергии во внешнюю сеть газотурбинные установки. При этом возникает необходимость оценить влияние активного потребителя на режимные параметры электросистем нефтегазоперерабатывающих предприятий. Целью работы является оценить возмущение режима функционирования электросистемы нефтегазоперерабатывающего предприятия при подключении активного потребителя. Цель достигается решением следующих задач: разработкой компьютерной модели электрических систем нефтегазоперерабатывающего предприятия и активного потребителя, моделированием изменений режимных параметров системы электроснабжения нефтегазоперерабатывающего предприятия при подключении активного потребителя. Переходные процессы исследуются методами имитационного компьютерного моделирования. Результаты моделирования показывают при включении методом точной синхронизации генератора активного потребителя на параллельную работу с электросистемой нефтегазоперерабатывающего предприятия нормальный переходный режим в течение 4 секунд...

Regimes, management and economics of energy complexes on the basis of renewable energy sources for autonomous power supply

The article describes the principles of creation, management and economics of power complexes based on renewable energy sources for decentralized power supply. The introduction of energy complexes based on renewable energy sources can compete with the centralized power supply of the regions by increasing energy security and reducing the risks of major accidents and disasters. Long-term contracts for the electricity supply can be a reliable and economical insurance in case of rising fuel prices in the long term.