A Multi-Terminal Cooperative Flexible Interconnection Control Scheme For High Proportion Consumption of Renewable Energy Sources

As fossil fuel consumption continues and environmental challenges escalate, the adoption of distributed generation (DG) has emerged as an inevitable global trend. However, the high uncertainty, volatility, and intermittence of DG will bring great risks to the distribution system’s security. This paper proposes a multi-terminal cooperative flexible interconnection control scheme based on BTB-VSC for high proportion consumption of DG to address voltage-related challenges in the LV distribution grid. Under the condition of not relying on communication, the voltage over-limit control of a flexible interconnected distribution system is realized, and the accommodation capacity of the system to DG is effectively improved. The simulation model of a 380V low-voltage flexible interconnected distribution system constructed in Matlab/Simulink is utilized to validate the proposed voltage regulation scheme’s feasibility and effectiveness.