孤立微电网分布式二级功率优化控制

发布时间：2018-06-13 09:55

本文选题：孤立微电网 + 下垂控制　；参考：《电网技术》2016年09期

【摘要】：针对传统下垂控制的功率分配精度易受线路阻抗影响的不足,提出一种孤立微电网分布式二级功率优化控制策略。各分布式电源的控制器构成一分布式稀疏通信网络,与邻居控制器交互电压、频率信息。在仅有邻居分布式电源信息的基础上,利用一致性算法得到全网的平均电压和频率,用于二级优化控制。通过优化下垂控制的电压和频率参考值,实现有功功率按照额定容量比例精确分配的目标,并且进行系统电压和频率的调节。由于不存在中心控制器,该策略可靠性较高。最后通过Matlab/Simulink仿真验证了所提控制策略的有效性及优越性。
[Abstract]:A distributed two-stage power optimal control strategy for isolated microgrid is proposed to overcome the disadvantage that the power distribution accuracy of traditional droop control is easily affected by line impedance. The controllers of each distributed power supply form a distributed sparse communication network and interact with the neighbor controller with voltage and frequency information. On the basis of only neighbor distributed power information, the average voltage and frequency of the whole network are obtained by using the consistency algorithm, which is used in the two-stage optimal control. By optimizing the voltage and frequency reference values of droop control, the target of accurate distribution of active power according to rated capacity is achieved, and the system voltage and frequency are adjusted. Since there is no central controller, the reliability of the strategy is high. Finally, the effectiveness and superiority of the proposed control strategy are verified by Matlab / Simulink simulation.
【作者单位】：东南大学电气工程学院;国网浙江省电力公司;
【基金】：国家自然科学基金(51177015) 江苏省重点研发计划项目(BE2015012-1) 新世纪优秀人才支持计划(NCET-13-0129) 国家电网公司科技项目(SGTYHT/14-JS-188)~~
【分类号】：TM727

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