The article discusses the issues of improving the energy performance of mainline electric locomotives by controlling a traction asynchronous motor according to the criterion of minimum power loss when the voltage of the power source is not symmetrical. When calculating the electromagnetic compatibility of the traction drive of the Uzbekistan-Yulovchi electric locomotive with the power supply system, it is necessary to take into account the frequency control process in an autonomous inverter.

One of the main trends in the marine electric power industry is to increase the energy efficiency of the electrical equipment used. The article considers the proposed device, the implementation of which will increase the energy efficiency of asynchronous electric drives, which, as is known, are the main consumers of marine electricity.

The aim of the work is to assess the influence of a cascade of transformers on the reactive power in the network at a symmetrical load. It has been established that any phase is a source of reactive power for the other two phases. Conversely, any two phases are the source of reactive power for the third phase. In accordance with this, in a real network, with an increase in the number of transformer substations, the flow of reactive power decreases significantly with distance from the load.

On separate sections of high-voltage power transmission lines, power lines of various voltage classes converge. When one of the adjacent lines is taken out for repair, voltages hazardous to personnel may arise on its wires due to the electromagnetic effects of the neighboring power line. In order to ensure safe work in such situations, special measures are used, the choice of which in the conditions of digitalization of the electric power industry should be carried out on the basis of adequate computer modeling. Significant induced voltages are observed in asymmetric modes of the influencing power line, which are characterized by the flow of currents in the ground; the levels of these stresses depend on the electrical parameters of the soils. However, the quantitative assessment of this effect has not been studied enough. The technique presented in the article makes it possible to take into account the difference in the electrical parameters of soils and can be used in practice when planning measures to ensure electrical safety.

The main factors of information compatibility of automatic control systems for energy-saving electric drives, built on the basis of multifunctional algorithms, when integrating them into a single information space of the enterprise, are proposed. The compatibility assessment method allows you to purposefully vary the specific shares of data storage and processing processes in the software, as well as solve the issues of computer modeling and the choice of identification and adaptation algorithms in the general work cycle. The performance indicators of the systems are given – the performance gain coefficients of software modules, the essence of the subject area, the accuracy of evaluating input and output information, the probability of achieving the goal, the transition times during information exchange, depending on information resistance, rigidity, memory capacity and the level of information-moving logic. It is shown that this will avoid the influence of the reactive parameters of information circuits in control systems.

The paper considers the requirements for the performance of work during the operation of electrical installations. The analysis of changes in the new edition of the Rules on labor protection during the operation of electrical installations is carried out. The analysis of the sufficiency of the additions made to the POT in terms of ensuring the safety of work in live electrical installations for the successful development of this technology in Russia, the use of protective equipment when working in electrical installations is carried out.

The ways of increasing intrinsic safety in the oil and gas, chemical and processing industries are considered. The analysis of the domestic regulatory framework and international standards in the field of protection of power equipment and measuring circuits in terms of protection against external and internal overvoltages is carried out. The necessity is shown and recommendations are given for the use of lightning protection in the fuel and energy and oil and gas complex.