基于Hamilton系统理论的直流配电系统镇定控制

Stabilization Control of DC Distribution Systems Based on Hamilton System Theory

随着分布式发电及电动汽车的大规模接入,直流配电系统中的随机因素日益增加,直流源荷设备的随机性扰动以及交流线路参数、滤波电容参数的不确定性都会影响到系统的稳定性。建立了直流配电系统随机动态模型,提出了基于Hamilton系统理论的随机稳定控制方法,设计了预反馈控制律及镇定控制器,搭建了仿真及实验系统,并对比了加入镇定控制器前后的系统动态特性及稳定性,仿真和实验结果表明,所设计的镇定控制器能够抑制随机扰动产生的振荡现象,提高系统的动态特性及稳定性。

With the large-scale integration of distributed generation and electric vehicles,the stochastic factors in DC distribution systems are increasing.Random disturbance of DC source-load devices and uncertainties in AC line parameters and filter capacitor parameters can impair the stability of the system.This paper establishes a stochastic dynamic model of DC distribution systems,and proposes a stochastic stability control method based on the Hamilton system theory.A pre-feedback control law and a stabilization controller are designed,and the dynamic performance and stability of the system before and after adding the stabilization controller are compared by simulation and experimental systems.The results show that the designed stabilization controller can suppress the oscillation generated by random disturbances and improve the dynamic performance and stability of the system.