A Unified Control Scheme for Coal-Fired Power Plants with Integrated Post Combustion CO2 Capture

Within the DYNCAP project, a unified control scheme for coal-fired power plants with integrated CO2 capture cycle is developed. For seamless integration into existing power plant technologies, the German technical guideline VDI3508 for conventional thermal power plants is taken as starting point. Interactions between steam cycle and post-combustion carbon dioxide capture cycle are identified and communication interfaces between its control units are defined. An according extension of VDI3508 is implemented on the computer using the library ClaRaCCS written in Modelica. By direct computer simulation the validity of the novel control scheme is demonstrated under transient operation of the power plant coupled to the carbon capture cycle. The simulation results are discussed and recommendations for further improvement of the scheme are given.