自治直流微电网分布式经济下垂控制策略

发布时间：2019-06-15 14:53

【摘要】：经济下垂控制策略由于考虑了并联机组发电成本、运行效率、治污成本等因素,有效地解决了传统下垂控制策略运行成本高、效率低的问题。该文鉴于已有经济下垂控制策略的不足,提出了一种分布式经济下垂控制策略。该策略利用分布式一致性算法迭代寻找发电单元的最优经济运行点,并同时改变下垂控制的系数,使得收敛后微电网总的运行成本最低。文中所提的分布式策略兼具集中控制及自治控制的优点,由于没有中心控制器,增加了控制的鲁棒性及灵活性。利用Matlab/Simulink搭建具有不同运行成本单元的直流微电网模型,在JADE平台上开发所提策略,通过联合仿真验证了控制策略的有效性。对延时的影响进行了详细分析,并提出了相应的解决措施;设计了节点的投退协议,仿真验证了所提策略的即插即用特性。
[Abstract]:The economic drooping control strategy effectively solves the problems of high operation cost and low efficiency of the traditional drooping control strategy because it takes into account the power generation cost, operation efficiency and pollution control cost of the parallel unit. In view of the shortcomings of the existing economic droop control strategies, a distributed economic drooping control strategy is proposed in this paper. In this strategy, the distributed consistency algorithm is used to iteratively find the optimal economic operation point of the power generation unit, and the coefficient of droop control is changed at the same time, so that the total operating cost of the convergent microgrid is the lowest. The distributed strategy proposed in this paper has the advantages of both centralized control and autonomous control. Because there is no central controller, the robustness and flexibility of the control are increased. The DC microgrid model with different operating cost units is built by Matlab/Simulink, and the proposed strategy is developed on JADE platform. The effectiveness of the control strategy is verified by joint simulation. The influence of delay is analyzed in detail, and the corresponding solutions are put forward, and the input and retreat protocol of the node is designed, and the plug and play characteristics of the proposed strategy are verified by simulation.
【作者单位】：东南大学电气工程学院;
【基金】：国家自然科学基金项目(51177015) 江苏省科技计划项目(BE2015012-1) 新世纪优秀人才支持计划资助(NCET-13-0129)~~
【分类号】：TM921.5

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