采用模块化求解的主动配电网优化运行-《郑州大学学报(工学版)》

文章信息/Info

Title:: Optimal Operation of Active Distribution Network Using Modular Solution

Author(s):: Zhang Hongbin 1; Wang Kewen 2; 1. State Grid Economic and Technological Research Institute Co., Ltd. 2. School of Electrical Engineering, Zhengzhou University

Keywords:: active distribution network; day-ahead scheduling; Active and reactive coordination; distributed generation; controllable load

摘要:: 对主动配电网运行方式的优化，可以合理安排分布式电源、无功设备和储能设备的运行计划，提高配电网运行效率。以配电网运行成本和电压合格率最小为目标、电网和设备运行要求为约束，建立主动配电网日前、日内的有功无功协调优化模型；分析各类待求变量在优化模型中的特点和随时序变化程度，对连续变量和两类离散变量以及时段间的协调，建立相应的求解模块；通过各模块间的迭代实现总体最优。结合配电网特点的模块化处理方式，是对传统非线性混合整数动态规划算法的简化，具有计算资源需求上的明显优势。通过118节点算例的计算分析，表明了所提算法的可行性和实用性。

Abstract:: By optimizing the operation mode of the active distribution network, the operation plan of distributed generation, reactive equipment and energy storage equipment could be arranged rationally , and the operation efficiency of distribution network would be improved . The operation cost and the voltage qualification rate in a distribution network were used as the minimize objective, and the operation requirement of power grid and equipment were used as constraints, day-ahead and real-time optimization models with active and reactive power coordination were established . Characteristics of all kinds of variables in the optimization model , and effect degrees of time series in variables were analyzed. Solution modules corresponding to continuous variables, two types of discrete variables, and the coordination between time intervals were established, and the overall optimum was achieved through the iteration among modules. Combined with the characteristics of distribution network, the modular processing method was a simplification of the traditional nonlinear mixed integer dynamic programming algorithm, which has obvious advantages in computing resource demand. The calculation and analysis in the 118- bus example showed that the proposed algorithm was feasible and practical.