数模混合实时仿真系统直流分量消除研究

DC Component Elimination of Real Time Digital-Analog Hybrid Simulation System

为解决数模混合实时仿真系统直流分量消除问题,提出一种电流直流分量大小工况识别和PI控制的直流分量瞬时补偿策略相结合的方法消除直流分量,即稳态时消除直流分量,暂态时若电流直流分量小于定值S予以消除,反之予以保留,并通过仿真试验验证其有效性。结果表明,该方法可有效消除稳态工况下的直流分量,保留系统暂态故障所需的直流分量,保证数模混合仿真系统准确、高效、稳定的工作。该研究为消除数模混合实时仿真系统的直流分量提供了新方法。

In order to solve the problem of DC component elimination in digital-analog hybrid simulation system,the DC component of instantaneous compensation strategies based on the content of DC current component and PI control are proposed.The system eliminates the DC component in the steady state.If the DC component is smaller than the set value S,the DC component is to be eliminated;otherwise it is to be retained.The effectiveness of the control strategy is verified by simulation test.The results show that this method can effectively eliminate the DC component under steady state condition,keep the DC component required for transient fault of the system,and ensure the accurate,efficient and stable operation of digital-analog hybrid simulation system.This study provides a new method to eliminate the DC component of digital-analog hybrid simulation system.