Research on Flexible Multi-port Access and Coordinated Control Strategies for Multi-energy Integration in Offshore Platform Clusters

To achieve flexible access for multiple types of energy sources on offshore platforms and power supply to load islands, addressing the requirement for flexible networking of offshore platforms while considering platform space and load-bearing limitations, a device connection scheme and topology enabling flexible control of multi-form access were designed. A multi-port power conversion system for multi-type energy access on dual offshore platforms and an electrical model of the load island were established to meet the need for dynamic and flexible interconnection between the electrical and mechanical systems of offshore platforms in the marine environment. Subsequently, a distributed cooperative control strategy for the system was investigated. Operation results demonstrate that, under the control strategy of the established electrical model, all multi-type energy sources can operate stably. The positive and negative deviation of the platform DC bus voltage is maintained within ±2%, and the voltage deviation of the load island is less than 0.6%, ensuring stable system operation.