A Multi-State Reliability Model for a Gas Fueled Cogenerated Power Plant

Cogeneration plant consists of many equipment and distinguished by their structural complexity. Many of them can perform their task at many different demand levels. In such cases, the system failure can direct to reduce ability to carry out the particular task, but not to complete failure. Moreover, each system element can also perform its task with some various levels. For example, the generating unit in power system has its maximum generating capacity, which is fully obtainable if there are no failures. Some types of failure can cause complete unit outage, whereas other types of failure can cause a unit to work with reduced capacity. Therefore cogeneration power plant can have an arbitrary finite number of different states (task performance levels) the system is termed a multi-state system (MSS). This paper developed Markov model associate with universal generating function to assess the reliability and availability of cogeneration power plant.