The article deals with the issues related to ensuring the required quality of electrical energy in electrical networks and various power supply systems. The relevance of the various technical means use to identify the places of unacceptable values occurrence of electric energy quality indicators, including various equipment, the operation of which is accompanied by rapid changes in the values of phase and phase-to-phase voltage, is shown. Experimental data are presented showing the existence under certain conditions of significant rapid voltage fluctuations in electrical networks, which leads to the occurrence of exceeding the normalized values of short-term and long-term flicker doses. A simplified method is proposed for determining the location of equipment that creates an unacceptable level of short-term and long-term flicker doses during its operation, using for this purpose the differentiation of currents flowing in different places of electrical networks which supply consumers of electrical energy. A computer model of a simple power supply circuit with power receivers connected to it, operating both in quiet and in sharply variable modes of power and current consumption, has been developed. In the course of working with this model, it was found that the determination of the values of current derivatives at various points of the electrical network, followed by analysis of the data obtained, makes it possible to find equipment that creates unacceptable levels of rapid changes or voltage fluctuations.

In this review and research work, based on the study of domestic and foreign scientific literature, an attempt is made to present the main metering devices for the consumption of fuel and energy resources necessary to solve the technical, economic and environmental problems of modern enterprises, which they currently use in order to minimize threats and dangers caused by the emergence of global problems of mankind, which appeared due to the shortage of traditional minerals and the active development of renewable energy. A significant part of the work is devoted to the description of the classification of existing energy carriers, the study of various aspects of the relevance and demand for alternative energy sources, the explanation of the causes of global environmental problems and the enumeration of names, concepts, terms related to simple, cheap equipment designed for accounting and analysis of energy consumption.

The analysis of some of the large number of projects of small and micro-modular reactors (MMR and MKR, respectively) with different technologies that are of great interest for distributed and autonomous generation of remote territories, transport and special purpose is carried out. The specifics of these reactors require solving not only technical and production tasks, but also new approaches to regulation, licensing, safety assessment, international law and nonproliferation issues. Russia is among the leaders in the MMR and MKR market, bearing in mind the mastered serial production of RITM-200 reactors, implemented and under construction thermal power plants for Chukotka and Yakutia. For the global nuclear industry as a whole, MMR and MKR can become a new breath in the implementation of new nuclear technologies that can change the face of the energy of the future.

The basic relations of the electromagnetic field are used, which describe the energy of natural models of the Earth, the Sun and technical MHD devices. If natural models have small magnetic field strengths, but their enormous size and the influence of gravity cause enormous electromagnetic interaction forces, which, for example, on the Earth's surface reach 1012 N with an average induction of 25 Gs. The Earth model is represented by a 6-dimensional electric machine. The kinetic energy of the Earth's rotation reaches 6·1022 kWh, which is 209 times higher than the energy produced by man. Due to the Earth's deceleration by 1 s per year, the Earth emits 1014 kWh of thermal energy. The revealed natural electromechanical interrelations allowed them to be used in the power industry on the basis of MHD generators of various types. Due to the absence of an intermediate cycle of heat conversion into mechanical energy and the absence of movable nodes, MHD provides an increase in efficiency up to 65% and is not limited in power. The classification of MHD devices is carried out and their application in power engineering is described.

The article presents an overview of the problems of integration of distributed generation sources (RGS) into distribution networks, based on changes in the composition and structure of power systems caused by a noticeable increase in the share of distributed generation based on renewable energy sources (RES). The main emphasis is placed on the need for preliminary identification of a set of problems and features that arise during the introduction of power sources, their impact on the power system and its components. The review includes a scientific summary of the results of research on the key issues of integration of distributed generation sources into energy networks.

The article discusses the variety of carbon nanocomposites and their properties. Carbon, being a widely distributed element in the Earth's crust, exhibits a unique property of polymorphism, creating a tremendous diversity of structures with unusual physical characteristics. Its crystalline phases such as diamond and graphite have been known for a long time, and the rapid development of nanomaterial science has led to the discovery of new nanostructures, the main ones being fullerenes, carbon nanotubes, and graphene.