为降低数字物理混合型变电站培训仿真系统的建设成本,对一次系统仿真模型及其求解算法进行了研究.利用贝瑞隆法将整个仿真模型分成站内仿真模块、线路仿真模块和负荷仿真模块,通过短路故障转移法与电流逻辑分析法使站内仿真模块的规模大幅缩小,采用多项式预条件共轭梯度法提高仿真模型的求解速度.为解决一次系统网络参数突然变化带来的计算风暴,提出了一种计算模块独立于输出模块的预仿真策略.实例测试表明,基于预仿真策略的数字式一次系统能在廉价的多微处理器系统中运行,且能与真实二次设备很好地配合.%The simulation model of primary system and its algorithm are studied to cut down the construction cost of hybrid substation training and simulation system. Bergeron's circuit is used to segment the whole simulation model into line module, substation equipment module and load module. The short circuit fault transfer and logical current analysis are adopted to highly reduce the matrix scale of substation equipment module,the polynomial preconditioned conjugate gradient is used to speed up the solution of simulation model. In order to solve the mass calculation caused by the sudden change of simulation model parameters,a pre-simulation strategy is proposed,which makes the calculation model independent from the output model. Practical tests show that the digital primary system based on pre-simulation strategy can run in low-cost multi-microprocessor system and cooperate well with the real secondary devices.
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