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Undergraduate YPEC 2021

UG16-Real time simulation for solar energy system testbed in Hong Kong

Abstract—Climate change is affecting everyone on every continent. Referring to the UN Sustainable Development Goals (SDGs) 2030 agenda, urgent action is needed, and stepped-up efforts in Renewable Energy (RE) applications. How to penetrate high levels of sustainable RE and Distributed Energy Resources(DERs) into power grids become important, and the solution – smart grid with more reliable, efficiency, and flexible features comes out. Back to Hong Kong, the size of solar scale would come-up with small and individual features on the rooftop of buildings with Feed-in-Tariff (FiT) introduced by the post-2018 Scheme of Control Agreements (SCAs). Increasing DERs application reduces the system’s inertia may result in possible frequency stability issues that lead to un-equilibrium active power supply and demand. Understanding low-inertia systems and how to ensure the frequency stability is of crucial importance with load-frequency control. This paper will be introduced with a real-time Microgrid analytical study of solar renewable energy system testbed with Real Time Digital Simulator (RTDS) to evaluate the system dynamic response while an ad-hoc change in load or generation event occurs. With operations in continuous real time, the simulated system can operate close to the real microgrid system with parameters applied with real data of typical solar panels installation in Hong Kong. Featuring RTDS capability, the Hardware in the Loop (HiL) Testing would be investigated in the next stage allowing the microgrid operation, EV chargers, and protection and power devices to be evaluated under realistic operating conditions before they are installed in the actual microgrid system.