Тhe article examines the main differences between power transformers and auto transformers, their advantages and disadvantages, as well as promising technologies that enhance their characteristics. Special attention is given to new insulating materials, intelligent diagnostic systems, advanced magnetic circuits, environmentally friendly cooling fluids, and superconducting technologies. The development of these areas contributes to increased reliability, energy efficiency, and environmental safety of energy systems.

A method for determining the peak power of solar panels of a photovoltaic power plant using the automated calculation system "Photovoltaic Geographic Information System" is described. An example of using the technique is given. The conclusion is made.

A model of a frequency-controlled electric drive for the movement of an overhead crane trolley with a suspended load is compiled in operator form. A digital regulator has been developed in the drive control system to damp load oscillations like a pendulum. The resulting model shows graphs of load and bogie velocities at direct start and reverse of bogie movement, as well as velocity graphs when changing control in a sinusoidal shape. In all modes, the speed of movement of the load is obtained without oscillation.

In modern energy supply conditions, when the economies of countries largely depend on the efficient use of energy resources, the problem of commercial electricity losses is becoming particularly relevant. Commercial losses represent the difference between the amount of electricity produced at power plants and the amount of electricity actually paid for by consumers. These losses can occur for various reasons, including technical, organizational, and human factors. It is important to note that commercial losses not only damage the financial performance of energy companies, but also negatively affect the stability and reliability of energy supply in general.

Provides typical solutions in terms of UKTS security protections. USBT protections generate signals to start the safety system actuators, start emergency power sources (diesel generators), close the containment fittings of technological systems in order to automate the processes of heat removal from the workplace, and to localize the containment in emergency situations. When protection is triggered, a ban is imposed on the development of all control algorithms, except those necessary to perform protective actions. For the parameters involved in the formation of protection trigger criteria, as a rule, a separate alarm is provided when the parameter reaches the warning setpoint and the alarm alarm setpoint. The activation of technological protections is accompanied by the provision of information to the operating personnel about the root cause that caused their work, and an alarm about the activation of protection. The protection measures should not interfere with the operation of the equipment in the start and stop modes. The deactivation and subsequent activation of protections that prevent the implementation of these modes is performed automatically according to the operating conditions of the equipment.

Renewable energy sources are becoming a key trend in the global energy sector due to their environmental safety, sustainability and reduced dependence on fossil fuels. The article reviews the main types of renewable energy sources, including solar, wind, hybrid and bioenergy, as well as the prospects for their development in the context of the global energy transition. The advantages and disadvantages of renewable energy, its economic efficiency and technological limitations are analyzed. Special attention is paid to the methods of energy efficiency improvement and integration of renewable energy sources into existing energy systems. Data on the dynamics of renewable energy capacity growth in the world, normative-legal regulation and state support measures are given. The problems of energy storage and new solutions in the field of battery technologies and smart energy systems are considered. Comparative calculations of efficiency of different energy sources, tables and formulas illustrating key indicators are presented. It concludes with conclusions on the importance of renewable energy for sustainable development and reducing the carbon footprint of the economy. The article will be useful for specialists in the field of energy, industrial enterprises, as well as those involved in the issues of sustainable development and reducing the carbon footprint of the economy.

This article is devoted to the key aspects of AES application in the industry of the Kyrgyz Republic, including technical, economic and environmental advantages and disadvantages. The current state of alternative energy in the country is analyzed. Examples of successful implementation of the technologies at enterprises are studied, and the main problems constraining the development of this area are identified. The research methods include comparative analysis of different types of AIE, calculation of payback period, as well as assessment of ecological impact on the environment. The results obtained show that the introduction of solar, wind and biogas plants at industrial enterprises can not only reduce dependence on traditional energy carriers, but also reduce electricity costs, which is especially important in the conditions of rising tariffs and energy dependence on hydro-resources. The conclusion presents recommendations for the development of alternative energy in Kyrgyzstan, including measures to stimulate innovation, improve the legislative framework and raise awareness of enterprises about the possibilities of using renewable energy sources. This article is useful for energy specialists.

The experience of Japan in the storage and use of hydrogen for electric propulsion is analyzed. It is noted that, unlike the global trend for an accelerated transition to electric vehicles with large rechargeable batteries (AB), Japanese manufacturers are betting on hydrogen vehicles using fuel cells (TE). The German and Japanese approaches to choosing the type of electric propulsion are compared and the latter option is recommended for Russia in the long term. The structure of the hydrogen car and TE is given, as well as a comparative analysis of the applicability of AB and TE.