|CUI Xiaodan,WU Jialong,XU Jianbing,FENG Jiaqi,WANG Yanpin,DENG Kui.Optimal grid-division method of electromagnetic transient parallel simulation for high proportion of renewable energy power systems[J].Electric Power Automation Equipment,2023,43(11):174-180,224
|关键词: 电磁暂态仿真 并行仿真 分网 NSGA-Ⅱ 多目标优化
|Optimal grid-division method of electromagnetic transient parallel simulation for high proportion of renewable energy power systems
CUI Xiaodan1,2, WU Jialong1, XU Jianbing1,2, FENG Jiaqi1, WANG Yanpin1, DENG Kui1
1.NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 211106, China;2.State Key Laboratory of Smart Grid Protection and Control, Nanjing 211106, China
|In order to improve the efficiency of electromagnetic transient simulation of large-scale power system with large-scale and multi-type power electronic equipment, a parallel simulation optimal grid-division framework and method based on hierarchical clustering grid pre-division, mathematical modeling of aggregation grid-division optimization problem under pre-division and optimization solution based on improved non-dominated sorting genetic algorithm-Ⅱ(NSGA-Ⅱ) are proposed. Firstly, the large-scale system is simplified based on hierarchical clustering grid-reduction to reduce the complexity of the original system. Then, based on the time-consuming actual measurement of typical simulation, the relative calculation of components is characterized in a unified way, and the aggregation grid division problem after grid pre-division is transformed into a multi-objective optimization problem. The Pareto solution set of optimal grid-division is obtained by improving NSGA-Ⅱ,and then the optimal grid-division method is obtained based on the minimum weigh-ted Euclidean distance. Finally, the effectiveness of the proposed method is verified by comparing the results of the same example system under the situation of no grid-division, grid-division by Metis tool and grid-division by the proposed method.
|Key words: electromagnetic transient simulation parallel simulation grid-division NSGA-Ⅱ multi-objective optimization