MODEL BASED DIGITAL TWIN OF AN ENGINE AS SUPPORT FOR DESIGN OF POWER PLANT AUTOMATION SYSTEMS
Mehinagic, Mirza (2019)
Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.
Julkaisun pysyvä osoite on
The demand for digital twin technology is present by both the provider and the end user. The term digital twin refers to a digital model of a system, in this case the engine. The main goal with this project was to create a simulation environment, where a power plant can be built from smaller systems. This environment enables the user to run the virtual power plant and see how it progresses under different situations. This Master’s thesis is based on the engine process model. The model described in this thesis is the V2034SG Wärtsilä engine with the main fuel being natural gas. The model provides the necessary signals, such as temperatures and pressures, to the controlling units. The simplicity of the model leads to fast simulation times and fast convergence to the results needed for further control. Two models are made to suit both a single-stage turbocharger and a two-stage turbocharger model. The lubrication oil, temperature and pressure, through the engine and turbocharger is also modelled. The engine temperature and the cooling water temperature are calculated in the engine model. The two turbocharger models create the same signals with different values. By incorporating different charge air temperatures into the engine for example, the results become more closely related. The overall project succeeded in the creation of the simulation environment, where the next steps are to improve the complexity of the models and increase the reliability of the overall power plant so that it can be run under different circumstances.