摘要
随着与直流输电、柔性交流输电等相关的电力电子装置广泛应用于电力系统,电磁暂态仿真逐步成为电力系统分析的重要工具。然而,由于电磁暂态仿真选取的步长小,占据的内存大,计算速度慢,仿真规模受到了限制。基于坐标系旋转变换的思想,通过旋转变换降低信号的频率,提出了一种快速的大步长仿真方法。与机电暂态仿真相比,本方法可以体现系统的电磁暂态行为,提高了仿真精度,与传统的电磁暂态仿真相比,提高了仿真速度。
With the w ide application of pow er electronic devices in pow er system,such as high voltage direct current（ HVDC）,flexible AC transmission systems（ FACTS） and so on,the electromagnetic transients program（ EMTP）gradually becomes an important tool for pow er system analysis. How ever,the simulation scale of EM TP is limited due to the small time step,occupying large memory and slow computing speed. Based on the rotating transformation of single phase coordinate,this paper proposed a fast simulation method w ith large time step,w hich could reduce the signal frequency through the rotation transform. Compared w ith the electromechanical transient simulation,this method can reflect the electromagnetic transient behavior of the system and improve the simulation accuracy. It also can improve the simulation speed compared w ith the traditional electromagnetic transient simulation.
出处
《电力建设》
北大核心
2015年第12期16-21,共6页
Electric Power Construction
基金
中央高校基本科研业务费专项资金资助(JB2013032)
国家电网公司科技项目(XT71-14-042)~~
关键词
大规模电网
电磁暂态仿真
快速仿真
large-scale pow er system
electromagnetic transient simulation
fast simulation
