Development of concentrated solar power and conventional power plant hybrids
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Keskittävän aurinkovoiman ja perinteisen voimalaitoksen hybridin kehitys
CSP hybrids are one of the possible technical solutions in order to increase the share of renewable energy and decrease greenhouse gas emission levels as well as fuel consumption. The main objectives of the thesis are to research state-of-the-art technologies in concentrated solar power (CSP) and conventional power plants, to comprehensively study the possible integration options and to develop one CSP hybrid configuration by using Advanced Process Simulator (Apros), which is a dynamic modelling and simulation tool for industrial processes. Furthermore, the objectives are to develop control strategy for the hybrid and demonstrate the operation of the hybrid under steady state and transient conditions in order to find challenges of hybrid systems and future development requirements. As a result, main challenges of the hybrid system are, for example, imbalances between turbines and heat surfaces, optimization of heat surfaces and operation of steam boiler under transient conditions. Future development requirements include, for example, improvement of the control engineering, research on the possibilities to reach higher solar shares and transient simulations with higher solar shares. As a conclusion, the achieved results and the developed model in this thesis provide viable information for the future development of CSP hybrids.