Research on Multi-level Distributed Photovoltaic Consumption Strategies Photovoltaic Based on AC/DC Hybrid Distribution Network

Due to the characteristics of volatility, intermittence and uncertainty of distributed photovoltaic, when large-scale distributed photovoltaic is connected to the power grid, it will cause photovoltaic power curtailed. Therefore, a multi-level consumption strategy for access to distributed photovoltaic distribution network is proposed. Firstly, this paper studies the topology of a new energy router, and proposes a new AC/DC hybrid distribution network architecture based on it. Then, according to the operation characteristics of AC/DC hybrid distribution network, the coordinated control strategy of four-level consumption including bus consumption, cross-bus consumption, cross-area consumption and energy return to the grid is studied in detail, which avoids the direct injection of photovoltaic power into the distribution network and reduces the energy exchange between the station areas and the grid. Finally, in the Matlab/Simulink simulation environment, the distributed photovoltaic four-level consumption is simulated and verified, and the results prove the effectiveness of the proposed multi-level consumption strategy.