New CHIL and PHIL experimental setups, applications and considerations implemented in the Electric Energy Systems Laboratory (EESL) of ICCS-NTUA will be presented and discussed. The presentation will commence by showcasing the interaction between a hardware inverter controller and a hardware protection relay implementing an islanding detection scheme, in a CHIL setup. Next, the design and testing of an adaptive protection scheme, adjusting setting groups of three feeder relays using industrial communication protocols (IEC 61850, DNP3) in a CHIL setup, will be presented. Moreover, the CHIL testing of an industrial controller for Grid Code Requirements compliance, facilitating the integration
of renewable energy sources and advanced technologies into the grid, will be highlighted. In the realm of microgrids, the HIL testing of a developed in-house energy management system will demonstrate cutting-edge performance in simulating and refining real-world microgrid operation using a digital twin, optimizing renewable energy utilization. Emphasis will be placed on the combined CHIL and PHIL setup, investigating the interaction between a controller for seamless microgrid transition and a hardware PV inverter. A critical factor for the successful PHIL implementation is to have a stable but at the same time accurate setup, thus our recent work in the frame of ERIGrid 2.0 project, published at IEEE Transactions on
Industrial Electronics on extended range of high-fidelity setups for PHIL testing will be presented. Lastly, the presentation will highlight the benefits of Geographically Distributed Real-Time Simulations and the work carried out within ERIGrid 2.0, enabling comprehensive power system analysis and optimization over larger areas.
Alkistis Kontou | ICCS-NTUA