The article presents a study of the effect of a resistor in a network neutral point from 6 to 35 kV on the conductive electromagnetic interference with the ground-fault current. A mathematical model is proposed.

The possibilities of using controlled transformer-type shunt reactors at power grid substations to optimize the transmission mode are considered. The laws of voltage regulation, providing the mode of natural power and reduction of active power losses in the electrical system, are highlighted. Key words: energy complex, controlled transformer-type shunt reactor, voltage stabilization, thyristor voltage controller, control winding.

The article presents information on the creation of conditions for school students to create biological concepts in conditions of bilingual education, describes the experience of using pedagogical techniques in the CLIL methodology

The main problem: This article is devoted to the key problems of the fuel and energy complex of the Republic of Kazakhstan: 1) lack of production capacity to meet the growing demand for energy and fuel from the economy and the population. Increased demand for electricity and heat, which will require the commissioning of new generating capacities.There is already a shortage in the fuel markets. Modernization and bringing the existing oil refineries (hereinafter referred to as refineries) to full capacity will not allow providing the domestic market until 2030; 2) the export orientation of raw materials, the dependence of the economy on the export of energy resources. In order to attract technology and investment in the oil and gas and nuclear industries, agreements on the extraction of energy resources were concluded with international export companies. In the medium term, Kazakhstan may face a shortage of oil for domestic refineries, if measures are not taken to stimulate its refining within the country. The uranium mined is fully exported; 3) high energy intensity of the economy, low level of energy efficiency. There is a high potential for increasing the efficiency of energy use both in the electric power industry and fuel production, and at the level of final consumption – in industry and housing and communal services; 4) decrease in the replenishment and quality of the resource base in the oil and gas, coal and nuclear industries; 5) low environmental friendliness of technologies used in the fuel and energy complex. Purpose: The purpose of the article is to reveal the problem in the field of ensuring the fulfillment of international obligations between different countries and their own energy sufficiency by gradually changing the structure of energy production. Methods: Studying the experience of increasing the efficiency of the use of energy resources and energy saving as a priority of the state policy of the country. Analysis of production capacity with a constantly forecasted shortage of primary energy resources and insufficient growth of capacity for the production of electricity and heat. Consideration of the possibility of compensating for the shortage by saving energy resources, increasing tariffs for energy carriers, as a stimulating factor for their effective use. Results and their significance: The results of this article will reflect the problems of energy, as the most important driving force of global economic progress. The well-being of the people depends on the state of the country's energy sector, therefore there is an urgent need to solve the emerging problems. The global energy problem is, first of all, the issue of stable and efficient supply of fuel and energy to mankind. Today, the energy sector of Kazakhstan is focused on fuel resources, since the country is provided with hydrocarbons and other energy resources. About 72 % of electricity in Kazakhstan is generated from coal, 12,3 % from hydro resources, 10,6 % from gas and 4,9 % from oil. Thus, the four main types of power plants generate 99,8 % of electricity, while alternative sources account for less than 0,2 %.

In order to successfully conduct agricultural work and obtain a competitive harvest, it is mandatory to carry out spraying operations of crops that require highly qualified personnel, expensive equipment and suitable weather conditions. The use of tractors for spraying fields is the most common solution available at the moment, has disadvantages: high cost, risk of damage to the crop by "hitting", "hooking" or otherwise; environmental damage; due to exhaust gases, the demolition of the solution increases with increasing speed. Using a device designed specifically for spraying equipment is an ideal solution. The purpose of the article is to develop a working model of an automated sprayer for processing agricultural crops. The methods used are: technical justification of a controlled device for processing agricultural crops. Calculation of functional capabilities, algorithms of operation of the proposed automated device: selection of the type of sprayer, engine, chassis, controller, battery, as well as justification of the possibilities of using alternative energy sources (wind energy, solar energy); development of a 3D model of an automation device for anti-weed processing of agricultural crops, printing of parts, assembly of mechanical and electronic parts. Making a prototype using 3D printing; development of the wiring diagram of electronics, software (firmware of the microcontroller; application that controls the settings), testing of the prototype, assembly of the current model; rationale for the optimal use of Arduino and Raspberry Pi boards in this device in a pair: Raspberry Pi will allow you to control processes on the Arduino and easily interact with the Internet when the Arduino itself will perform simple operations such as interacting with electronics and reading sensor readings. The manufactured operating model showed compliance with the goals, a high degree of controllability, environmental friendliness, reduction of energy consumed, labor resources and can be used to scale this device. The developed model of the automation device for anti-weed treatment of agricultural crops can be used not only in agricultural pollination, but also as a mechanism for studying soil parameters: humidity, mineralogical composition and chemical content in the ground, using electronic sensors, as well as an automated mobile platform for any purpose requiring accurate navigation through the territory.

The article contains the results of a research work devoted to an important problem - the development, production and delivery to the consumer of fermented dairy products of a healthy diet fortified (enriched) with milk protein, a vitamin-mineral complex, and probiotics and prebiotics. Purpose is based on mathematical modeling of experimental data, to determine an effective fermented food system for use as the basis of a fortified (enriched) curd product for a healthy specialized diet; to develop a recipe and technology for its production; to study the nutritional, biological and energy value of a new product. Modern technologies and equipment were used in experimental studies: ultrafiltration, fortification, etc. The studies were carried out by standard physicochemical, microbiological methods in three to five repetitions. Mathematical and statistical processing of experimental data was carried out using the program "Statistica-6.0". A recipe and technology for the production of a curd product for a healthy specialized diet has been developed. Its nutritional, biological and energy value has been studied. The developed recipe and biotechnological parameters for the production of the curd product were tested in the industrial conditions of the leading enterprise JSC "Lyubinskiy MKK". The quality and safety of the curd product was studied in the laboratory of techno-chemical control of FGANU "VNIMI" (Moscow).

Increasing the yield of sunflower is inextricably linked with the evaluation of newly created interline hybrids and their components (parental forms) using various methods for assessing their combination ability (CА). Breeding research in this direction includes large material and practical costs when using the developed methods for assessing combination ability (CА) due to its small analytical capabilities. New approaches to the analysis of the productivity of hybrids in practical studies can significantly increase the volume of the analyzed material and evaluate not only for a short period of testing, but also for a long period of time over the years. Purpose is determination of the combination ability of parental forms of sunflower interlinear hybrids to optimize the breeding process. When analyzing the determination of the combination ability of the parental components of sunflower interlinear hybrids, the method of evaluating the CА according to a special scale developed at VNIIMK (Krasnodar, Russia) was used. This method makes it possible to analyze a large number of hybrid combinations and their parental forms and draw appropriate conclusions for further use in the breeding process. The analysis of the obtained results makes it possible to fully evaluate the obtained interline hybrid combinations by years of testing. We analyzed 1736 hybrid combinations involving 212 maternal forms and 1472 combinations involving 209 paternal pollen fertility restorer lines. 75 maternal lines with a high total combination ability (GCА) and 97 paternal forms with this trait were identified. Maternal lines with high combinational ability VKU 110 A, VKU 140 A and SV 55 A are of interest for use in practical breeding. Among the paternal forms are SV 123 V, VKU 400 V and VKU 401 V. The components of hybrid combinations with high specific combination ability (SCА) have been determined. These are lines VKU 414 A, VKU 413 A, SV 31 Rf, SP 1459. Hybrids with high adaptive properties have been identified when growing conditions change, which will make it possible to purposefully conduct practical breeding to maintain high productivity of sunflower hybrids