Optimal Control of Grid Connected Electric Railways to Mitigate Low Frequency Oscillations

P. Dey, C. Sumpavakup, P. Kirawanich
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引用次数: 1

Abstract

This paper presents mitigation of grids’ low-frequency oscillations is carried in presence of railway traction load. In order to better deal with these low frequency oscillations, this study has considered the vehicle-grid cascade system. The numerical study of the single-machine infinite bus (SMIB) system has evaluated the influence of electric traction vehicle (ETV) by establishing overall small signal model of the grid connected vehicle. The performance of the system is compared for ETV-connected SMIB and ETV-connected SMIB equipped with linear quadratic regulator (LQR) controller. It is observed that modified SMIB power system with LQR-based control is superior to others in improving system responses with significantly reduced settling time, rise time, and peak overshoot.
并网电气化铁路低频振荡的最优控制
本文介绍了在铁路牵引荷载作用下电网低频振荡的抑制方法。为了更好地处理这些低频振荡,本研究考虑了车网级联系统。通过建立并网车辆整体小信号模型,对单机无限母线(SMIB)系统进行数值研究,评估了电动牵引车辆(ETV)对系统的影响。比较了etv连接的SMIB和配置线性二次型调节器(LQR)控制器的SMIB的系统性能。结果表明,基于lqr控制的改进SMIB电力系统在改善系统响应方面优于其他控制系统,显著降低了稳定时间、上升时间和峰值超调。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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