Research on Substation Training and Simulation System Based on Real-Time Digital Primary System

The digital-physical hybrid substation training and simulation system is a powerful tool for training substation workers, which is widely accepted by power grid for its excellent training function and realistic simulation environment. In order to make the transient model of primary system suitable for parallel computing, Bergeron´s circuit is applied to divide the primary system model into three modules. Based on parallel computing, the polynomial preconditioned conjugate gradient method is adopted to reduce iteration times and improve the speed of solving simulation model. A pre-simulation strategy is proposed to make the calculation module independent from the output module to insure the real-time calculation in the entire simulation process. Practical tests show that the substation training and simulation system based on the real-time digital primary system operates well with the real secondary devices, and the algorithm in this paper could achieve the real-time simulation of primary system with low cost multi-microprocessor implementation.