The article discusses distribution electrical networks 0.38 kV operating modes, feeding individual residential buildings. The electrical energy parameters measurement were certified RESURS-UF2M device carried out. The currents and voltages time diagrams based on the measurements made and using Matlab technologies were constructed. It is established that the level of phase currents unbalance is quite high and causes significant three-phase power supply system unbalance voltage accordingly. The power of quality indicators - calculations, characterizing voltage unbalance were made, which were based on the measurements and the computer program “Asymmetry” was used. As well as the additional power losses coefficient determining by the phase currents unbalance, were calculations. Time diagrams these indicators are constructed and their analysis were made. As a result, the power of quality is significantly reduced by unbalance power consumption in the studied electrical network were founded. At the same time, the additional power losses are significant increases. Specific recommendations for the normalization electrical network-operating mode are given.

The agriculture and forestry sector require a solution to the problem of energy supply to autonomous consumers. The use of renewable energy sources is relevant worldwide in accordance with environmental requirements. The paper considers the project of a photovoltaic solar power station using light filters to reduce the number of solar panels to provide the required power. The Krasnoyarsk State Agrarian University has developed an experimental setup for studying the characteristics of solar panels using light filters. The aim of the study is to develop a technology for the use of light filters in photovoltaic solar power station and to optimize their operation modes in order to increase the economic efficiency of using autonomous sources for power supply to agricultural consumers. The objectives of the study are the selection and analysis of light filter materials to increase the generated power, substantiate the application of the photovoltaic solar power station for autonomous objects of agriculture and forestry and prove the economic efficiency of the proposed installation. The paper presents the results of a study of the characteristics of solar modules using filters, the main economic indicators are calculated, the economic efficiency of the use of filters is proved. The use of photovoltaic solar power station will ensure a reduction in the cost of electricity generation by 7% compared to existing plants.

No abstract

According to the analysis of the distribution of acreage in Krasnoyarsk Region, there has been a noticeable increase in the area of oilseeds, including camelina, recently. This is due not only to the emergence of zoned varieties, but also to an increase in the export of seeds abroad. The rate of production of vegetable oil is increasing with the introduction of various technologies, for example, physical impact on the seeds of these crops. However, oilseeds are susceptible to disease. Agrotechnical and chemical methods of treatment are used to disinfect seeds. At Krasnoyarsk State Agrarian University, rational modes of pre-sowing treatment of camelina seeds in an ultrahigh-frequency electromagnetic field have been established. They are aimed at disinfecting seeds, enhancing their growth, as well as plant development and, ultimately, obtaining environmentally friendly products. To implement this technology, a plant has been developed with a capacity of about 35 kg/h on camelina. Due to the fact that the sown area allotted for oilseeds in different farms of Krasnoyarsk Region has increased in recent years from several hectares to several thousand hectares, it can be assumed that the productivity of the plant we have developed is insufficient. Consequently, on the basis of the results obtained over many years, it is necessary to develop a plant capable of providing not only operating parameters, but also uniformity of seed treatment, and most importantly, taking into account the growing interest in oilseeds, productivity

The article discusses the research results on the internal electrical networks operation of two independent individual residential buildings with a 0.38 kV voltage three-phase electrical input energy. It is established that these electrical networks operation is characterized by a significant currents and voltages unbalance level, which leads to a quality standards violation and electrical energy additional losses increase. When using the computer program “ModulHous”, which algorithm is based on the developed calculation methods, the currents and voltages unbalance calculation was performed. With the use of the MATLAB graphics editor technology, the obtained changes visualization in the currents and voltages unbalance has been implemented. The obtained diagrams analysis made it possible to establish the unbalance power consumption level and its impact on the internal power supply efficiency of the individual residential buildings. A special balancing device is proposed that automatically minimizes unbalancing flows in the internal individual dwellings electrical network. The developed software made it possible to establish the using balancing devices efficiency to improve the quality and reduce electrical energy additional losses in the considered electric networks of individual residential buildings.