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基于电压动态的电力变压器自抗扰控制方法

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随着高速列车的发展,基于电力变压器的牵引控制系统稳定运行成为当前研究热点.因此,研究在电压动态的基础上进行了电力变压器稳定性探索.针对系统在多辆列车接入时存在低频振荡的问题,研究利用自抗扰控制进行了控制方法设计,并利用光滑连续非线性函数对自抗扰控制进行改进.仿真分析显示,研究提出的控制方法无超调且运行更加稳定.与传统控制器相比,自抗扰控制在电压阶跃变化下到达给定值的时间减少了 88.89%.硬件在环测试显示,自抗扰控制器到达给定值电压的时间比PI控制器减少了 70%.结果表明,研究设计的电力变压自抗扰控制方法能够提高系统抗骚动能力,调节超调与速度之间的矛盾,对低频振荡进行抑制.该控制方法在电力变压器基础上的牵引控制系统中具有积极的应用价值和可靠性.
Active Disturbance Rejection Control Method for Power Transformers Based on Voltage Dynamics
With the development of high-speed trains,the stable operation of traction control system on the basis of power trans-former has become a current research hot spot.Therefore,the study has explored the power transformer stability on the basis of voltage dynamics.Aiming at the problem of low-frequency oscillation of the system when multiple trains are accessed,the study utilizes the self-immunity control for the design of the control method and improves the self-immunity control by using the smooth continuous non-linear function.Simulation analysis shows that the proposed control method has no overshooting and more stable operation.Compared with the conventional controller,the time to reach the given value under voltage step change is reduced by 88.89%for the self-im-mune control.Hardware-in-the-loop tests show that the active disturbance rejection controller takes 70%less time than the PI con-troller to reach a given value of voltage.The results show that the research-designed power transformer self-resistant control method can improve the system's ability to resist disturbances,regulate the contradiction between overshooting and speed,and suppress low-frequency oscillations.The control method has positive application value and reliability in traction control system based on power transformer.

voltage dynamicspower transformeractive disturbance rejection controltraction control systemstability

周健、焦康威

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江苏省送变电有限公司,南京 210028

南京工程学院,南京 211112

电压动态 电力变压器 自抗扰控制 牵引控制系统 稳定性

2024

自动化与仪器仪表
重庆工业自动化仪表研究所,重庆市自动化与仪器仪表学会

自动化与仪器仪表

CSTPCD
影响因子:0.327
ISSN:1001-9227
年,卷(期):2024.(11)