STOCHASTIC ANALYSIS OF RELIABILITY OF POWER CABLES USED AS A TWO UNIT COLD STANDBY SYSTEM IN METRO RAILWAYS
2018
T oday’s mass-rapid-transportation in the cities around the world centres dependable and failure-resistant metro network which uses power cables for energising the metro system substations to further feed motor drives etc.. The present study of the metro network system necessitates carrying out reliability and profit analysis of this power energizing system through power cables. These cables are laid in loops for feeding supply to substations from each station. Initially, one cable is in operation and the other cable of same voltage capacity is kept as cold standby. If one cable fails then the other cable is made operative with very short time delay. Inspection has been carried out at each failure to check whether the system is repairable or irreparable. The data depicting the real failure situations have been collected and various measures of system effectiveness are obtained using semi-Markov processes and regenerative point technique. The Graphical analysis has also been made for several cases which enable to draw various important conclusions with respect to profit analysis of the present system.
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