Modeling of Combined Heat and Power Generating Power Plant Units Using Markov Processes with Continuous Time Parameter and Discrete State Space

Abstract

Power plant units with extraction and back-pressure turbines cogenerating heat and power play a decisive role in the heat and power generation of the former centrally planned Eastern European countries. Cogeneration requires that for a certain portion of the operating period, extraction-condensing and back-pressure steam turbine power plant units make less than their nominal capacity available to the power system. Consequently, the two-state reliability description is not suitable for differentiated reliability modeling of cogeneration power plants. This article briefly sets out a three-or-more-state reliability description of these power plant units using Markov processes with continuous time parameter and discrete state space.

Keywords:

• power system reliability
• cogeneration
• power system planning

Notes

^a Modeled as an aggregated power plant unit.