平均成本下垂控制策略在分布式发电中的应用.pdfVIP

第 43 卷 第 10 期 电力系统保护与控制 Vol.43 No.10 2015 年 5 月 16 日 Power System Protection and Control May 16, 2015 平均成本下垂控制策略在分布式发电中的应用 朱 旋，陈得宝，方振国，李 峥 (淮北师范大学物理与电子信息工程学院，安徽 淮北 235001) 摘要：提出了一种线性分布式电源功率分配方案，在微电网孤网运行时可节约总的发电成本。基于(分布式电源) 各自的平均发电成本，通过调整分布式电源下垂率实现成本的节约。与现有的基于非线性成本下垂策略相比，所 提方案使用下垂曲线，在减少总成本方面取得了良好的性能。该方案以可调度及不可调度下垂控制的分布式电源 微网进行了实验。实验结果证明了在不同的运行情况下，所提方案具有高效和良好的特性。 关键词：微网；分布式电源发电；下垂控制；发电经济性；成本函数 Mean cost-based droop scheme in the appllication of distributed generators ZHU Xuan, CHEN Debao, FANG Zhenguo, LI Zheng (School of Physics and Electronic Information Engineering, Huaibei Normal University, Huaibei 235001, China) Abstract: This paper presents a linear power sharing scheme for distributed generators (DGs) to save the overall total generation cost (TGC) in an autonomous micro-grid. The cost saving is realized by tuning the droop gradients of DGs based on their respective mean generation costs. Compared with the existing non-linear cost-based droop schemes, the proposed scheme uses linear droop curve and achieves better performance in TGC reduction. The proposed scheme has been tested experimentally for the micro-grid, first with all dispatchable droop controlled DGs and then with non-dispatchable DG included. Experimental results have demonstrated the good performance and effectiveness of the proposed scheme under different operating conditions. Key words: microgrid; distributed power generation; droop control; power generation economics; cost function 中图分类号： TM271 文献标识码：A 文章编号： 1674-3415(2015)10-0014-07 来改进有功和无功分配[10]。类似于传统电力