Abstract

In most isolated micro-grids, diesel engines usually work as synchronous machines and provide electricity to the whole system. Nowadays, the introduction of renewable generation can greatly relieves the local power demand burden and is hence becoming more and more popular. However, due to the characteristics of intermittency and uncertainty of renewable generation, diesel engines have to constantly start up and shut down to compensate for the power gap. In this regard, a better understanding of the diesel engine start-up and synchronization process is of great importance for system stability and reliability evaluation. This paper develops a comprehensive diesel engine model considering the general diesel engine start-up process and their synchronization mechanism. The model is then implemented and validated in a specific micro-grid system on PSCAD platform.

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