Integration of Ramp-Rate Compensation in a Distributed Virtual Synchronous Generator Schema for Hybrid PV Plants

In this paper, the integration of a PV ramp-rate compensation is presented, taking advantage of behaviour of an aggregated virtual synchronous generator (VSG) method. This method can be used for virtually increasing the inertia of the power converters connected to a grid, reducing potential stability issues, as well as enhancing the behaviour of a PV power plant during transients, such as cloud passing or temperature variation, avoiding sudden reduction in the power injection to the grid, complying with grid requirements. The proposal is validated by simulation tests. Furthermore, a little economical study based in LCoE index is done in order to analyze if it is worth including this method in an application with VSG, considering parameters and generation of a real PV plant.