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18TECHNICAL SCIENCES
ANALYSIS OF CONTROLING THE STATE OF TRACK SECTIONS ON LINES WITH SPEED AND
HIGH-SPEED TRAIN TRAFFIC
Aliev R.
Lecturer, TSTrU,
Department «Information systems and technologies»
Abstract
Every year, with an increase in train speeds on railway transport, the introduction of modern automation and telemechanic is expanding. Auto blocking, automatic locomotive signaling, dispatching and electrical interlocking, crossing signaling devices are under construction. The most effective means of intensifying the work of railway transport, improving the use of its main complex and expensive technical means is to automate the control of the transportation process using a complex of systems for interval regulation of train traffic and ensuring its safety. The reliability of these systems, especially for high-speed lines, largely determines the rhythm of transportation and the safety of train traffic.
Keywords: railway transport, automatic blocking, railway systems, satellite
Axle counting systems. In railway transport, axle counting systems are used for the following purposes: monitoring the occupancy of track and switch sections; control of the arrival of a train in full force from the haul to the station (in SAB systems); determination of the numbers of damaged wheelsets in systems for detecting overheated axle boxes or malfunctions of wheel rims (in systems for monitoring the state of rolling stock on the move - PONAB, DISK, KTSM, etc.) [1]. The use of axle counting systems to monitor the condition of track sections has a number of advantages. The main advantages include: possibility of application in areas with low insulation resistance between rail lines; no restrictions on the length of the controlled section. The disadvantage of this method is the lack of monitoring of the good condition of the rail lines. Therefore, this method cannot be applied in high speed sections [1].
Radio-technical sensors controlling of the condition of track sections (RTSC). In radio-technical sensors, microwave electromagnetic waves emitted by the transmitter serve as a means of establishing spatial contact between the receiver and the transmitter [2]. The presence of a mobile unit between the transmitter and the receiver disrupts this communication and thus the occupied or free state of the track section is monitored. The advantage of such an RTSC construction scheme is the obvious simplicity and continuous monitoring of the sensor's performance. But the disadvantage of such systems is that they are highly susceptible to interference and have not yet found widespread use.
Satellite navigation systems [3, 6]. Currently, satellite navigation systems are widely used in train traffic control systems to control the location of a mobile unit on railway sections. There are two full-scale satellite navigation systems in the world:
GLONASS - Russia;
GPS-NAVSTAR - USA.
The GLONASS global navigation satellite system is designed to determine the location, speed of movement, as well as the exact time of sea, air, land and other
types of consumers. However, it is recognized by experts that these devices are significantly inferior to track circuits in terms of reliability and functionality [5]. At the present stage of development speed and high-speed railways. lines, it is advisable to use track circuits that serve as sensors for information on the location of the rolling stock, as well as used as teleme-chanical channels for transmitting information between track and train devices. Thanks to track circuits, it is possible to ensure the maximum throughput of sections and stations, as well as to increase the safety of train traffic.
The most promising in this regard today are tonal track circuits, on the basis of which microprocessor systems for interval control of train traffic are built and which are most widely used on the roads of the Russian Federation, CIS countries and foreign countries.
References
1. Aliev, Ravshan. A Method for Controlling the Freedom of Track Sections by the Axle Counting System International Journal of Innovative Research in Science, Engineering and Technology (IJIRSET) 10 (5), 2021, pp. 5500-5502. DOI:10.15680/IJIRSET.2021.1005227
2. Gulyamova M.K., Aliev R.M. Database concept, relevance and expert systems Collection of materials of the International Scientific and Practical Conference, Cheboksary. Center for Scientific Cooperation "Interactive Plus" 2021, pp. 125-127. DOI 10.21661/r-553409
3. Aliev, Ravshan., Aliev, Marat., Tokhirov, Ezoz. Model microprocessor device of four-wire scheme of the direction change German International Journal of Modern Science .№11, 2021, pp. 30-32. DOI: 10.24412/2701-8369-2021-11-1-30-32
4. Aliev, Ravshan. A Rail line model with distributed parameters of track circuit IOP Conf. Series: Materials Science and Engineering 1152 (2021) 012018. doi:10.1088/1757-899X/1152/1/012018
5. Aliev, R.M. and Aliev, M.M. (2020) "Methods for calculating the coefficients of the rail fourpole
of sensors control tonal frequency," Chemical Technology, Control and Management: 2020: 5 (13). DOI: https://doi.org/10.34920/2020.5-6.68-71
6. Tashmetov, Timur; Tashmetov, Kamoliddin; Aliev, Ravshan; and Rasulmuhamedov, Muhamadaziz
(2020) "Fuzzy information and expert systems for analysis of failure of automatic and telemechanic systems on railway transport," Chemical Technology, Control and Management: Vol. 2020: Iss. 5, Article 29. DOI: https://doi.org/10.34920/2020.5-6.168-171
IMPROVING ELECTRIC ENERGY TRANSPORT CONTROL BY STRUCTURING OVERHEAD
LINES 35 - 750 kV
Cherkashyna V.
Doctor of Technical Sciences National Technical University "Kharkiv Polytechnic Institute ", Kyrpytchova str., no. 2, 61002 Kharkiv, Ukraine
СОВЕРШЕНСТВОВАНИЕ УПРАВЛЕНИЯ ТРАНСПОРТОМ ЭЛЕКТРИЧЕСКОЙ ЭНЕРГИИ ЗА СЧЕТ СТРУКТУРИРОВАНИЯ ВОЗДУШНЫХ ЛИНИЙ 35 - 750 кВ
Черкашина В
Доктор технических наук Национальный технический университет "Харьковский политехнический институт ", ул. Кирпичева, 2, Харьков, 61002, Украина,
Abstract
To improve the control of the transport electrical energy, it is proposed to structure overhead lines on the basis of optimizing the parametric series of wire cross-sections and a fiber-optic cable built into the phase wire. The implementation of the proposed direction was studied on the technical and economic model of overhead lines 35 - 750 kV, the main difference of which is to change the analytical relationship of investments in lines with a wire cross-section. To analyze the developed model, a criterion method was used, which made it possible to avoid the uncertainty of the initial information. The implementation of this direction will reduce the impact of network heterogeneity, move to the unification of overhead lines and monitor the current parameters of the facility in real time.
Аннотация
Для совершенствования управления транспортом электрической энергии предложено структурирование воздушных линий на основе оптимизации параметрических рядов сечений проводов и вмонтированного в фазный провод волоконно-оптического кабеля. Реализация предлагаемого направления исследовалась на технико-экономической модели воздушных линий 35 - 750 кВ, основное отличие которой заключается в изменении аналитической связи инвестиций в линии с сечением провода. Для анализа разработанной модели использован критериальный метод, который позволил уйти от неопределенности исходной информации. Реализация данного направления позволит снизить влияние неоднородности сети, перейти к унификации воздушных линий и контролировать текущие параметры объекта в реальном времени.
Keywords: overhead line, a series of parametric, unification, electricity, criterial method.
Ключевые слова: воздушная линия, параметрический ряд, унификация, электроэнергия, критериальный метод.
Постановка проблемы. Центральное место среди энергоэффективных разработок занимают "интеллектуальные" сети - электросетевой комплекс, основанный на современных технологиях. Для функционирования которого необходимо совершенствовать структуру электрических сетей (ЭС) и обеспечить комплексное управление всеми технологическими процессами, включая транспорт электрической энергии [1, 2].
Для поиска рациональной структуры и формируют параметрические ряды электросетевого оборудования в соответствии с требуемыми условиями
[3, 4]. Основой рациональной структуры воздушных линий (ВЛ) 35 - 750 кВ является уровень стандартизации и унификации, который отражает возможность использования типовых конструктивных решений, технологических процессов, элементов ВЛ 35 - 750 кВ. В [5] рассмотрены вопросы структурирования ВЛ на основе оптимизации параметрического ряда сечений проводов и представлены предложения по унификации ВЛ 35 - 750 кВ, но не учитывались перспективы изменения электрических нагрузок и рыночной стоимости земельных
