配电网架的多阶段不确定性规划  

Distribution Network Multi-Stage Planning Considering Uncertainty

作　　者：杨文宇[1] 刘健[2] 

机构地区：[1]西安理工大学自动化学院,西安710048 [2]西安科技大学电气与控制工程学院,西安710054

出　　处：《电工技术学报》2006年第6期89-95,共7页Transactions of China Electrotechnical Society

基　　金：全国优秀博士学位论文作者专项基金(200137)。

摘　　要：为了在规划过程中考虑负荷的不确定性,提出了一种基于改进最小生成树算法的多阶段不确定性规划方法。以多阶段供电总成本现值最小为各场景目标,根据规划结果的收敛性,动态调整各个阶段保留的考察网架个数,各阶段间采用扩展规划算法进行计算。最后以各场景总费用的数学期望最小的方案作为最佳规划结果。利用多阶段规划中各个条件负荷的自相关性和互相关性,滤除大量不可能组合,有效减少了场景个数,提高了规划计算效率。该方法考虑了负荷不确定性的配电网架优化规划结果,具有计算量小的特点。算例表明该方法是可行的。A multi-stage planning approach considering uncertainty is put forward based on improved minimum-cost spanning tree algorithm. The index of each scenario is to minimize the total cost in all stages. The number of schemes to be investigated in each stage is modified dynamically according to the convergence of the planning results. Expanding planning measures are made between the stages. The optimal plan is the one with the minimum expectation of total cost for all scenarios. Besides, the number of possible scenarios is remarkably reduced and the efficiency is increased by considering the self-correlation and cross-correlation behaviour. By the proposed method, the optimal planning considering load uncertainty can be obtained with reduced calculation. An example is given showing the feasibility of the proposed methods.

关 键 词：配电网 不确定规划 多阶段规划 改进最小生成树算法 

分 类 号：TM715[电气工程—电力系统及自动化]