考虑气储惯量互补的多能直流微网运行控制策略

Control Strategy of Multi-energy DC Micro-grid Considering Complementary Inertia of Gas and Battery

多能互补直流微网对实现能源可持续发展具有重要意义。基于含风光气储等多种能源形式的典型直流微网,提出了考虑气储惯量互补的多能直流微网运行控制策略。针对微网内微型燃气轮机具有大惯量特性无法快速响应负荷变化的问题,提出一种微燃机与储能电池惯量互补的控制方法,利用储能电池动态响应快速的特点弥补微燃机动态特性的不足。所提控制策略可充分利用微燃机功率调节作用,降低系统成本,提高新能源利用率,对直流微网稳定运行提供保障。最后通过仿真验证所提控制策略的正确性与有效性。

Multi-energy complementary DC micro-grid is of great significance to achieve sustainable energy development. Based on the typical DC micro-grid with various energy forms including wind,solar,gas and battery,a multi-energy DC micro-grid operation control strategy considering the complementary inertia of gas and battery was proposed. Aiming at the problem that micro-turbine in micro-grid has large inertia characteristics and cannot quickly respond to load changes,a control method that complements inertia of micro-turbine and battery was proposed,and the rapid dynamic response of the battery was used to compensate for the dynamic characteristics of the micro-turbine insufficient. The proposed control strategy can make full use of the power regulation effect of micro-turbine,reduce system costs,improve the utilization rate of new energy,and provide guarantee for the stable operation of the DC micro-grid. Finally,simulation was used to verify the correctness and effectiveness of the proposed control strategy.