基于FPGA的变电站实时仿真培训系统

为降低变电站仿真培训系统的建设成本，提高变电站实时数字仿真的质量，提出了一种基于FPGA的变电站实时仿真培训系统。采用最小度最大独立集法安排节点消去和电压计算的顺序，较好地兼顾了运算量和运算并行度。采用多输入多输出的指令流运算器实现细粒度的并行计算，提高了FPGA资源利用率。利用状态字和影响字间接完成仿真参数的修改，减少了仿真计算时间和节约了数据存储空间。实例表明，采用最小度最大独立集法、指令流运算器及仿真参数间接修改方法，一个具有542节点的仿真变电站能以40 ms仿真步长在一块EP4CGX150芯片上正常运行。

Real-time simulation training system for substation based on FPGA

Real-time simulation training system for substation based on field-programmable gate array (FPGA) is proposed in order to reduce the construction cost of substation simulation training system and enhance the quality of real-time digital simulation. A minimum degree maximum independent set method is adopted to arrange the sequence of nodes elimination and voltage computation, which has a good balance of computation burden and degree of parallelism. Fine granularity parallel computing is realized by adopting a multi-input and multi-output instruction stream arithmetic unit, therefore improving FPGA resource utilization. The simulation parameters are indirectly modified by the status word and effect word, thus reducing the simulation time and saving data memory space. Simulation example shows that a simulation substation with 542 nodes could be processed in an EP4CGX150 chip with 40 ms simulation step, according to the proposed minimum degree maximum independent set method, instruction stream arithmetic unit and indirect modification method for simulation parameters. This work is supported by National Natural Science Foundation of China (No. 51477114) and Tianjin Science and Technology Program (No. 13TXSYJC40400).