Chornaja, V.

Chornij, V.

Khankyshyieva, M.

Ханкишиева, М.

Черная, В.

Черный, В.

English

Scientific hub Dnipro University of Technology

Електропостачання та електроустаткування 18                                             n*n p YY t   ,                                                    (8) где pt – коэффициент Стьюдента для заданной надежности и числа степеней свободы 1k L  . В рас-сматриваемом случае надежность принималась 0 05p , . Здесь n*Y – остаточное среднеквадратичное отклонение, вычисляемое по формуле:     211nL* *Y n nY Y / L    .                                                             (9)  Среднеквадратическая относительная ошибка прогноза определялась следующим образом:  100nY n nmaxY / Y %   ,                                                       (10)  где nmaxY – наибольшее значение прогнозируемой величины. Полученные в результате значения: σYд = 21,2ºC, σYп = 20.9 ºC, rYдYп = 0.99, σ*Yn = 2.34 ºC,   ∆Yn = 0.28 ºC, δYn = 3.2%.  Выводы Полученные результаты свидетельствуют об адекватности предложенной  тепловой модели АД, ра-ботающего в сетях с  некачественной электрической энергией. Учитывая, что для многих типов двигате-лей  в справочной литературе отсутствуют сведения о коэффициентах теплоотдачи и теплоемкости, а по отдельным приводятся только тепловые постоянные времени, значения указанных параметров  модели могут быть получены по использованной в статье методике.  Список литературы  1. Жежеленко И.В. Высшие гармоники в системах электроснабжения промпредприятий. – М.: Энергоатомиздат, – 2000. – 340 с. 2. Борисенко А.И. Охлаждение промышленных электрических машин. – М.:Энергоатомиздат, 1983. 3. Проектирование электрических машин. /Под ред. И.П.Копылова – М.:Энергия, 1980 4. Рыжков А. А. Определение параметров тепловой схемы замещения асинхронного двигателя на базе эксперимен-тальных данных/ Проблемы автоматизированного электропривода: теория и практика: сб. науч. тр. Днепродзерж. гос. техн. ун-та (техн. науки): темат. вып. – Дн-жнск.:, 2007. – 156 c. 5. Качан Ю.Г. Реализация модели асинхронного двигателя для условий некачественного питания / Ю.Г. Качан А.В.Николенко, В.В. Кузнецов // Вісник Кременчуцького державного політехнічного. університету. – 2009. – №3.– С.56-58. 6. Качан Ю.Г. Тепловая составляющая экономического ущерба от работы асинхронного двигателя в условиях нека-чественной электроэнергии  / Ю.Г. Качан, А.В. Николенко, В.В. Кузнецов // Гірнича електромеханіка та автоматика: наук. – техн. зб. – 2010. – Вип. 85. – С.9 – 16 7. Корн Г. Справочник по математике для научных работников и инженеров / Г. Корн,  Е. Корн. – М.: Наука, 1984.     Рекомендовано до друку: д-ром техн. наук, проф. Качаном Ю.Г.        UDC 622-625.28-83  V. Chornaja, M. Khankyshyieva, V. Chornij (Ukraine, Kremenchuk Mykhailo Ostrohradskyi National University)  JUSTIFICATION FOR THE REQUESTED OF A PARAMETERS MONITORING SYSTEM  FOR TRACTION ELECTRIC DRIVE OF MINE ELECTRIC LOCOMOTIVES  As experience in the operation of the traction rolling stock of domestic iron ore mines, transients (about  60 %) occupied most of the time functioning, which is connected with the peculiarities of doing work on the ex-traction of iron ore and adversely affects the reliability of the constituent elements, and especially on traction motors (TM). Emergencies often take place during operation of the traction unit in underground mines it can oc-cur in the circuit, switching equipment, converter, traction engines (fig. 1). Emergency situation can be caused Електропостачання та електроустаткування 19  by various factors in these devices. Basically, it is a short circuit of the electric circuit, breakage of the electric circuit, the deviation of the drive parameters are valid, the failure of the constituent elements and blocks of the actuator, the violation of the algorithm and others.  0%10%20%30%40%50%60%70%80%90%20006 5 7 8353234419 15 1081818 20 1132 30 29 32pantographexplorerscontrol systemtraction engineother equipment2005 2010 2012 yearAmount of damage Figure 1 – Dynamics of changes in consolidated figures amounts of damage to the main elements of the traction elec-tric mine locomotives K14 when operating in iron ore mines Kryvyi Rig iron ore basin  It should be noted that the dynamics of damage to rolling stock are changing over the years. However, trac-tion electric motors take a significant proportion of material costs for the repair. As can be seen from fig. 2, a large part of the material costs at the mine Kryvyi Rig accounted for engine repair.  0%10%20%30%40%50%60%70%80%90%1990 2000 2010 2013remaining equipmenttraction motoryearSpecific material costs Figure 2 – The dynamics of change in unit material costs for repair of traction electric mine locomotives K14 at the mine Kryvyi Rig iron ore basin  In this regard, the increase of reliability of work of mine electric locomotive transport, is a very important issue through the development and implementation of systems for monitoring the condition of the basic func-tional nodes. At present, the development of the measures, aimed at improving the reliability and reducing the costs as-sociated with the operation of a mine locomotive is necessary. With the aim of improving the reliability of mine electric locomotives his necessary to have reliable information about the technical condition of the equipment [1]. Therefore, special attention should focus on those elements that limit the mileage of locomotives between overhauls, followed by recommendations for their technical content. This category of items is traction motor.  Електропостачання та електроустаткування 20  The traction direct current motors series-wound are used on the locomotives, compared to the engines of parallel excitation have several advantages: a large overload capacity and starting torque, less sensitive to voltage fluctuations and other. The monitoring system of the rolling stock is a set of objects, methods and tools, as well as performers, al-lowing you to control the rules set by the relevant normative-technical documentation. It should be a mandatory part of the system of preventive maintenance of railway rolling stock. Installs the following applications monitoring systems of electric locomotives: – when testing and commissioning of electric locomotives in the production process; – during maintenance during operation; – repair of electric locomotives. The structure of the monitoring system should allow to increase functionality by adding transducers and re-fine the software system. In other words, the system must be scalable and configurable. When establishing a monitoring system in mine locomotive needs to address the issue of improving the re-liability and optimization of their work. The objects of monitoring have the weak and are nodes need to upgrade or replace, as the objects that are in an unstable range. It is necessary to evaluate the technical level of new facili-ties prior to their commissioning and in their manufacture or repair of controlling the stability of quality. The parameters measurement is one of the main functions of the monitoring system. The monitoring is car-ried out based on observations of the behavior of the managed system to ensure the optimal functioning of the latter (measurement of the achieved results and their correlation with the expected-mi results) [2]. The system adaptation makes on the basic on the monitoring data, i.e. the adoption of optimizing management decisions. In mine trolley locomotives are controlled main parameters of the traction electrical systems mine electric locomotives: power, voltage traction motor, the voltage in the contact network, the current traction motors, the speed of movement of the mine locomotive. Also important is the monitoring of the following parameters: tem-perature of the traction motors, energy, energy losses. All these parameters must be controlled in order to avoid or prevent accidents. The monitoring system implementation will allow to control the technical condition of TM in operating conditions, to choose the driving mode of the locomotive based on the status of the nodes that will increase their switching stability, reducing the number of faults, reducing the number of unscheduled repairs, the effective planning of repairs on-condition and an overall increase of service life [3]. System for monitoring the technical condition of electric rolling stock must meet the following require-ments: – to provide for monitoring the status of the controlled nodes; – to form conclusions about the suitability of the equipment for further use and to predict its service life. Using the monitoring system can be: – increase the duration of the operation (by improving the quality of repair); – reducing execution costs of unscheduled repairs; – the reduction of the volume of repair works; – reduced maintenance costs;  – the actual removal of unexpected failures (reliability and performance); – elimination of secondary damage (broken gearbox faulty bearing);  – lower costs of labor and material resources;  – reducing the cost of maintaining the mine vehicles. The conclusions. The monitoring system of the rolling stock is a set of objects, methods and tools, as well as performers, allowing you to control the parameters of the traction rolling stock. The monitoring system im-plementation will allow to control the technical condition of the traction motor in operation, to select the driving mode of the locomotive based on the status of the nodes that will increase their switching stability, reducing the number of faults, reducing the number of unscheduled repairs, the effective planning of repairs for technical co-standing and an overall increase service life.  References  1. Galkin V. G., Paramzin V. P., Chetvertov V. A. Nadjozhnost tjagovogo podvizhnogo sostava. – M.: Transport, 1981. – 184 s. 2. Krivorudchenko V. F., Akhmedzhanov R. A. Sovremennye metody tehnicheskoy diagnostiki i nerazru-shayushhego kontrolja detalej i uzlov podvizhnogo sostava zhelezorudnogo transporta. – M.: Marshrut, 2005. – 436 s. 3. Pukhov Y. S. Rudnichniy transport. – M.: Nedra, 1991. – 440 s. Рекомендовано до друку: д-ром техн. наук, проф. Сінчуком О.М. 

Justification for the requested of a parameters monitoring system for traction electric drive of mine electric locomotives

http://ir.nmu.org.ua//bitstream/123456789/148603/1/18-20.pdf

Justification for the requested of a parameters monitoring system for traction electric drive of mine electric locomotives

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