2024, Vol. 9, Issue 1, Part B

Thermal power stations are an important source of electricity in which thermal energy is converted into mechanical energy which is further converted into electrical energy. Although, there are many functional units in a thermal power station. The present paper is concerned with the main part i.e. Steam-generation part containing gas classifier, crushing mills and boilers working in series. The system is analyzed for availability and optimization. Gas Classifier has units in series, failure of a unit causes complete failure of the system. The crushing mills has two units in operating state, one unit in standby mode and further supported by fuel subsystem which help the system to survive in case of failure of operating units. Boiler is composed of several components in parallel. There may be partial failures but it never fails completely. Taking constant failure and repair rates for each subsystem, the mathematical formulation of the problem has been done using Markov Method. The governing differential equations are solved recursively for a steady state. Table and graph is shown followed by discussion and special cases. Availability optimization is also discussed.