Academic Journal
Safety barrier of electrical equipment for environments with a potential explosion in underground coal mines
| العنوان: | Safety barrier of electrical equipment for environments with a potential explosion in underground coal mines |
|---|---|
| المؤلفون: | Niculescu, Titu, Arad, Victor, Marcu, Marius, Arad, Susana, Popescu, Florin Gabriel |
| بيانات النشر: | National Mining University |
| سنة النشر: | 2020 |
| المجموعة: | Institutional Repository NTU (National Technical University) Dnipro Polytechnic / Національний ТУ "Дніпровська політехніка" |
| مصطلحات موضوعية: | coal mining, explosive environment, gas explosions, geomechanical parameters, methane, security barrier |
| الوصف: | Purpose. Electrical equipment for explosion-threatening environments in mines at risk of explosion communicates with the external environment through intrinsic safety barriers that limit the values of currents to values below the methane ignition, limit that exceeds the allowable concentration in the atmosphere. This avoids work accidents due to under-ground explosions, avoiding the risk of explosion through electric equipment. Methods. Experimental research has been based on the geomechanical characterization of the coal and surrounding rocks in the Jiu Valley Basin and measurements obtained in situ was researched by statistic methods. Three methods of studying barriers based on the use of the MATLAB program were used. The first method is based on MATLAB programming, the second involves the barrier study using the Simulink model and the third method is based on the use of the SimPowerSystems software package. In all three cases studied, the variation of the voltage at the output of the barrier and current through the barrier are analyzed considering two operating modes, the aperiodic and the oscillating regimes. Findings. The paper is a study of the intrinsic security barriers, based on which a correct dimensioning can be made. Originality. The originality of the paper consists in the analysis of the barriers with intrinsic safety, using the simulation with the MATLAB-Simulink program packages. Practical implications. All the methods addressed lead to obtaining the diagrams of variation of the voltage at the exit of the barrier and of the current through the barrier in two possible regimes: the aperiodic regime and the oscillating regime. ; Мета. Визначення раціональних параметрів бар’єру безпеки електричного обладнання в умовах вибухонебезпечних середовищ вугільних шахт на основі застосування комплексу методів математичного моделювання для запобігати виробничих аварій, пов’язаних з підземними вибухами. Методика. Експериментальне дослідження засноване на геомеханічній характеристиці вугілля та оточуючих його ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2415-3443 2415-3435 |
| Relation: | http://ir.nmu.org.ua/handle/123456789/156825; 621.3+622.817 |
| الاتاحة: | http://ir.nmu.org.ua/handle/123456789/156825 |
| رقم الانضمام: | edsbas.4EACD977 |
| قاعدة البيانات: | BASE |
| تدمد: | 24153443 24153435 |
|---|