电力系统电磁暂态实时仿真中并行算法的研究

该文从软件开发的角度出发,提出了一种解决电磁暂态实时仿真问题的分网并行算法.算法中采用"节点分裂"进行网络分割,采用子网内部节点电压方程与子网之间边界点电压相等的关系联合求解网络,并结合长输电线解耦法,在电科院开发的实时仿真器ADPSS中实现了电磁暂态分网并行计算,使网络中任意点都可以作为边界点进行网络分割.该算法不但能保持长输电线解耦法并行计算的较高并行效率,还能提高分网并行的灵活性.实际系统的计算结果表明:文中所提出的网络并行算法是正确和有效的;节点分裂法即可用于交直流电力系统实时仿真分网并行计算,以实现交直流系统实时仿真.也可应用于电力系统电磁暂态仿真与机电暂态仿真接口计算中,实现电力系统电磁暂态仿真与机电暂态仿真的混合仿真.

STUDY OF PARALLEL APPROACHES TO POWER SYSTEM ELECTROMAGNETIC TRANSIENT REAL-TIME SIMULATION

In this paper, a new method named "node-splitting algorithm" is presented to deal with the power system electromagnetic transient network partition and parallel simulation. According to this method, network partition can be applied in each bus. Combined with the other method-decoupling method through long transmission lines, not only the electro magnetic transient simulation's speed will rise a lot, but also the network partition will become very flexible. As a general interface method, this method also can be used in the hybrid simulation of electromagnetic transient and electromechanical transient simulation. This paper also presents the realization approach and result analysis. Through the modified IEEE 14-Bus system and North East China-North China-Center China-Chuanyu system's realization, this method has been validated.