Remote interconnection of real-time simulators: performance analysis and case studies

Within the global challenge to increase the energy production from Renewable Energy Sources (RES), a key role is and will be played by those plants connected to the Distribution Network (DN). However, a higher and higher penetration of RES connected at the Low and Medium Voltage grid requires redesigning the procurement of the Ancillary Services (AS) needed by the Transmission System Operator (TSO). In this Thesis a set of Realtime Remote co-simulation is executed with the Politecnico di Bari university, within the Living Grid research project. Firstly, the quality of the comunication between the two research facilities is investigated. A series of Realtime co-simulations with Remote Power Hardware In the Loop (PHIL) is implemented with the following aims: verify the feasability of a LV exible resource dispatchment and verify the stability of the proposed Remote co-simulation. Within the Living Grid project, a further study is carried on with the aim to estimate the contribution of the distributed sources conencted at the LV grid. The parameterization is achieved with a straight-forward non-linear regression. This study is realized merely with the Realtime simulator based in Turin and with no PHIL. A further set of Realtime simulation is realized merely with the Turin-based simulator. Speci_cally, the MV fault analysis is carried out, comparing the simulations with the expected results from the theorical analysis. Secondly, the feasability of the voltage regulation of a MV feeder by using uniquely the OLTC at the HV-mv transformer is carried out.