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  • Analysis of methods for predicting the consumption of electrical energy and power

    Forecasting the consumption of electrical energy and power is an urgent and significant problem. This paper discusses current methods for predicting the consumption of electrical energy, reflected in various scientific papers, their analysis is carried out with the identification of more promising forecasting methods.

    Keywords: energy consumption forecasting, statistical forecasting methods, neural network forecasting methods, hybrid forecasting methods

  • Mathematical modeling of photovoltaic panels as part of a distributed generation complex

    In this paper, based on Russian and foreign experience in mathematical modeling of photovoltaic installations, the authors consider the approaches to the construction of these models. The relevance of the research is confirmed by the wide spread of electric energy sources using solar energy. The scheme of photovoltaic element substitution and the dependences describing the processes occurring in it are given. The authors conclude that despite the large number of various mathematical models of photovoltaic elements, all of them can be grouped into two categories. The first category includes models that consider photovoltaic panels as a separate element, and the second category includes models where the photovoltaic panel is a component of a generating complex. Despite the difference in the analyzed approaches, the authors single out a number of parameters that characterize the operation of a photovoltaic panel and are sufficient to obtain simulation results with the required accuracy.

    Keywords: photovoltaic panel, mathematical modeling, substitution scheme, distributed generation, power generation

  • Identification of parameters of electromagnetic equivalent circuits of submersible electric motor rotor packs. Definition reasonable circuits

    The article discusses the features of the use and applicability of identification of parameters of the equivalent circuit of an submersible electric motors. The possibilities of technical implementation with a given accuracy are evaluated for definition the parameters of submersible electric motors substitution circuits under various external influences, as well as when designing submersible electric motors as an integral part of the electro-technical complex of electrical submersible pump units.

    Keywords: submersible electric motor, electrical submersible pump unit, identification of parameters of the equivalent circuit of an asynchronous electric machine, mathematic simulation, crude oil production

  • Analysis of methods to optimize the set-up and composition of a generating complex in the tasks of distributed generation

    The paper considers approaches to optimizing the composition and structure of distributed generation complex for various criteria, such as the cost of electricity and reliability of electricity supply. Based on domestic and world experience, the most promising method of optimization, as applied to the tasks of distributed generation, is carried out. A comparative assessment of traditional optimization methods and methods based on variations of population (evolutionary) algorithms is given.

    Keywords: distributed generation, optimization methods, structure of distributed generation plants, cost of electricity, reliability of electricity supply

  • Analysis of the load curve in the isolated areas of power supply

    The article studies the subject of human settlements with decentralized power supply, included into a locally isolated power supply complex. The basic integrated measures were determined for settlements power lines daily load curves. The results are presented, for dependency assessment between the integrated measures for daily load curves and the number of the settlement’s inhabitants. The dependency has been proven to be effectively described by a second order equation. For the dependency, the correlation coefficient, the determination coefficient and the average approximation error have been given.

    Keywords: Power line load curve, decentralized power supply zone, locally isolated power supply complex, approximation