Adaptive Black-Box Equivalent Modeling of Multiple Marine Micro-Grids Interconnected Through Subsea Cables

The interconnection of different kinds of marine micro-grids (MMGs) with plug-and-play functionality is becoming popular, and a combined model is necessary to achieve the control functionalities and operation of the system constitute of several MMGs. However, due to the remoteness of these MMGs, it is difficult to collect necessary data to establish a whole model for MMGs. Besides, subsea cables used to connect MMGs add additional challenges to the modeling because their parameters will change with ageing. Therefore, an adaptive black-box equivalent modeling method for multiple MMGs interconnected through subsea cables without knowing detailed information is proposed in this paper. And the parameters of the equivalent model of the subsea cables and the MMGs are estimated by a statistical algorithm based on the measurement data at the point of common coupling. Furthermore, case studies demonstrate the feasibility and effectiveness of the proposed methodology.