Вісники НТУ "ХПІ"

Постійне посилання на розділhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/2494


З 1961 р. у ХПІ видається збірник наукових праць "Вісник Харківського політехнічного інституту".
Згідно до наказу ректора № 158-1 від 07.05.2001 року "Про упорядкування видання вісника НТУ "ХПІ", збірник був перейменований у Вісник Національного Технічного Університету "ХПІ".
Вісник Національного технічного університету "Харківський політехнічний інститут" включено до переліку спеціалізованих видань ВАК України і виходить по серіях, що відображають наукові напрямки діяльності вчених університету та потенційних здобувачів вчених ступенів та звань.
Зараз налічується 30 діючих тематичних редколегій. Вісник друкує статті як співробітників НТУ "ХПІ", так і статті авторів інших наукових закладів України та зарубіжжя, які представлені у даному розділі.

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Фільтри

2020 - 20222

Налаштування

ORCID: search.filters.orcid.https://orcid.org/0000-0002-0379-1448Ключові слова: search.filters.subject.електрична енергія

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  • Ескіз
    Документ
    On the question of optimizing the quality of energy in city electric network
    (Національний технічний університет "Харківський політехнічний інститут", 2022) Hovorov, Pylyp; Hovorov, Vladlen; Kindinova, Anastasiia
    As is well known, ensuring the energy quality indicators set by the State Technical Service of Ukraine in electrical networks is an extremely important task. The heterogeneity of load schedules of consumers of urban electric networks in combination with the variety of their operating modes, phase differences, non-linearity and high speed of parameter changes led to the fact that asymmetry, non-sinusoidal, voltage deviations and fluctuations in the networks became permanent factors that significantly reduce the quality of the networks and consumers connected to them. In addition, studies of the power factor in urban electrical networks indicate a low level of reactive power compensation in them. This is due to the high value of voltage and power losses in networks, the technical need and economic feasibility of compensation of reactive power in them. Research conducted at O. M. Beketov Kharkiv National University of Urban Economy, testify to the fact that the main strategic directions for improving the quality of energy in urban electric networks are voltage regulation, taking into account the comprehensive solution of the issues of improving the quality of energy and compensation of reactive power. At the same time, the technical solution to the problem is on the way of multi-level correction of quality indicators by using additional multifunctional devices, the most important place among which is occupied by devices made on the basis of thyristor-controlled voltage transformers. The paper presents the results of this study. It is also determined that in combination with the automation of the process of managing multifunctional devices, the use of multifunctional converters as a whole allows solving the issue of optimizing the operation modes of city power supply systems. The application of research results in general allows solving the issue of energy quality optimization in urban electrical networks.
  • Ескіз
    Документ
    Smart Grid technology, transmission of electrical energy in power supply and lighting systems of cities
    (Національний технічний університет "Харківський політехнічний інститут", 2020) Hovorov, Pylyp Paramonovych; Hovorova, Kateryna Vladlenivna; Kindinova, Anastasiia Kostyantynivna; Abdelrahim, Omer
    Modern power supply and lighting systems of cities are complex electrical systems of an automated type, in which the processesin individual power supply systems and city lighting systems are interconnected andinterdependent. Therefore, the search for efficient technologies for the transmission of electrical energy in them is an extremely difficult task. The real state of the power supply and lighting systems in cities today is characterized by low operating efficiency, largely due to the low quality of electrical energy and insufficient compensation of reactive power in them. The mutual influence of power supply and lighting systems in cities, as well as the presence of significant voltage deviations and the overflow of additional reactive power in the networks, causes an increase in voltage and power losses inthem, as well as a decrease in the efficiency of networks and connected consumers, in general. Unfortunately, the existing methods and technical means based on them cannot fully solve this problem. The research carried out made it possible to clarify the nature of the processes in the power supply systems and the sanitation of cities and to determine the methods and technical means based on the Smart Grid concept. They are based on the use of phase-shifting booster transformers with an electronic control system. Their use made it possible to provide the possibility of complex control of the voltage modes of active and reactive power with the possibility of installation at any point in the network and centralized control from a single centre. The calculations show that the use of the developed methods and technical means provides an opportunity to reduce power losses in networks by 10–15% and energy costs for consumers by 50–75%.