The article considers a variant of constructing a model of a solar battery orientation drive based on a DC motor and PID control. Orientation in space is performed along two axes: azimuth and zenith. The model is used for optimal adjustment of PID controller parameters when processing the required orientation angles under gusty wind conditions. The following are used as the main adjustment criteria: small overshoot when processing the angle, aperiodic (non-oscillatory) nature of transient processes, minimum dynamic error in compensating for wind effects when processing the angle, minimum settling time when processing the effect. The controller was optimized using the coordinate descent method. A variant of controller adjustment for the optimal mode is given with process graphs confirming its practical optimality. The constructed drive model can be used to implement a digital twin of the solar battery panel orientation drive monitoring and control system.

Keywords: mathematical model of the drive, PID controller, solar panel, gusty wind effects, azimuth and zenith orientation, optimization by complex criterion

The methods and approaches to reduce the wear of bearings and blades of electric generators are analyzed to increase the service life of the equipment, improve its reliability and efficiency. An analysis of the factors affecting wear is given, including mechanical, temperature and operational loads. Calculations are performed confirming the effectiveness of using modern materials, improved lubrication systems and optimized process modes. It is shown that the comprehensive implementation of the proposed solutions can significantly reduce the wear rate, reduce maintenance and repair costs, and ensure stable generator performance. The recommendations presented can serve as a basis for upgrading existing equipment and designing new power plants.

Keywords: building structures, metal structures, energy facilities, stress-strain state, technical expertise

The article is devoted to the analysis of the UES of the South, which is part of the unified energy system of Russia (UES of Russia). An assessment of the change in the installed capacity of the power system over a period of 10 years and the causes that caused it has been made. A comparative analysis of changes in the structure of the installed capacity of the UES of the South by types of power plants at the beginning and end of the period under review is presented. Information on the largest commissioned generating facilities of the energy system, including solar and wind power plants, is reflected.

Keywords: energy system, power plants, installed capacity, structure, transmission lines, electrical substations, solar power plant, wind power plant.

Currently one of the promising trends in the global energy sector is the introduction of renewable energy sources (RES) into the existing grid. The use of RES can be favourable in autonomous power systems where fuel costs are high. However the stochastic nature of power generation creates a number of difficulties in maintaining the power balance. To solve this problem, it is proposed to connect a hybrid energy storage system (HESS) consisting of a battery and a supercapacitor to the load busbars. The efficiency of such HESS depends mainly on the way of its connection to the grid and the choice of control method. The article gives an overview of the existing mechanisms for controlling the power consumption of HESS.

Keywords: Renewable energy, hybrid electricity storage, power converter topology, electricity storage control strategy

Location of compensating devices is determined by various factors: configuration of power supply system, enterprise load schedule, type and length of power lines, parameters of capacitor banks, value of supply voltage. We consider the influence of the above factors on the creation of a mathematical model to determine the location of compensating devices, taking into account the minimum economic costs.

Keywords: compensating devices, reactive power compensation, power system, power grids of industrial enterprises, load schedule, mathematical model, reduced costs