中压直流综合电力系统建模与实时仿真实现方法

Modeling and Real-time Simulation of MVDC Integrated Power System

舰船中压直流综合电力系统包含大量特种电机和电力电子设备,其模型阶数高、非线性强,电磁暂态仿真计算量大。文章以典型中压直流综合电力系统为对象,首先,介绍了多相发电机整流系统、多相推进电机及其变频器、隔离型DC/DC变流器等组成设备的模型,构建了全系统电磁暂态实时仿真模型。其次,以开关分布平均化和节点数最少为优化目标,提出一种基于元件的启发式系统剖分方法,提高了系统优化剖分计算效率,在消耗较少计算资源的情况下,实现了系统高精度实时仿真。最后,物理试验验证了仿真模型的准确性,并通过对比分析,验证了所提出剖分方法的高效性。

The vessel MVDC integrated power system contains a large number of special motors and power electronic devices,which bear the characteristics of high order,large nonlinearity,and great calculation amount of electromagnetic(EM)transient simulation.Using a typical MVDC integrated power system as the study object,this paper first presents an EM transient real-time simulation model for the whole system based on the established models for the multiphase generator rectifier system,the multiphase propulsion motor and its inverter,the isolated DC/DC converter and other special facilities.With the average distribution of switches and the fewest nodes as the goal of optimization,it then proposes a component-based heuristic system partition method to improve the efficiency of calculation for an accurate real-time simulation of the system in the case of using fewer computational resources.Physical tests have been carried out to verify the simulation model,and the comparative analysis proves the proposed portion method to be feasible and effective.