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郑州铁路职业技术学院 机车车辆学院,河南 郑州 450000
牛 可(1985—),男,博士,讲师,主要研究方向为轨道交通安全系统工程;E-mail: niuke@zzrvtc.edu.cn
纸质出版日期:2022-09-10,
收稿日期:2021-06-23,
修回日期:2022-08-26,
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李向超, 牛可. 车-网耦合系统低频振荡的抑制策略优化及其参数设计[J]. 机车电传动, 2022,(5):129-134.
LI Xiangchao, NIU Ke. Optimization and parameter design for suppression strategy of low-frequency oscillation in the vehicle-network coupling system[J]. Electric drive for locomotives, 2022,(5):129-134.
李向超, 牛可. 车-网耦合系统低频振荡的抑制策略优化及其参数设计[J]. 机车电传动, 2022,(5):129-134. DOI: 10.13890/j.issn.1000-128X.2022.05.019.
LI Xiangchao, NIU Ke. Optimization and parameter design for suppression strategy of low-frequency oscillation in the vehicle-network coupling system[J]. Electric drive for locomotives, 2022,(5):129-134. DOI: 10.13890/j.issn.1000-128X.2022.05.019.
在电气化铁路中,当电力机车与牵引网的电气参数失配时易诱发低频振荡现象,不仅影响牵引网电压的供电保护,而且会引起机车牵引系统的封锁,对牵引网和机车的安全运行构成极大威胁。为更好地抑制该振荡现象,文章提出一种优化的振荡抑制策略及其参数设计方法。首先介绍电力机车-牵引网系统的等效电路拓扑和控制策略,并利用小信号理论建立车网系统的闭环小信号模型;然后在系统稳定性分析的基础上,以提高抑制策略的动态性能为目的,提出一种优化的基于主动阻尼控制的振荡抑制方法,并针对主动阻尼控制系数过大会影响系统稳态性能的问题,通过劳斯稳定判据确定主动阻尼控制系数的最小值。最后,搭建时域仿真模型进行测试,其结果验证了所提优化方法的有效性及其参数设计的合理性。
In electrified railway operation
it is easy to result in low-frequency oscillation if the electrical parameters of the locomotive and the traction network are mismatched. This will not only hamper the power supply protection of the traction network
but also lead to blocking of the locomotive’s traction system
posing severe threats to the safe operation of traction network and locomotive. To better suppress the oscillation
this paper presented an optimized oscillation suppression strategy and parameter design method. Firstly
after describing the equivalent circuit topology and control strategy of the vehicle-network system
a closed-loop small signal model of the system was modeled according to small signal theory. Then
on the basis of stability analysis
an optimized oscillation suppression method was proposed based on active damping control
aiming to improve the dynamic performance of the suppression strategy. As for the issue that excessively large coefficient for active damping control would influence the steady-state performance of the system
the minimum value of active damping control coefficient was determined according to Routh stability criterion. At last
the results of the test on time-domain simulation model verified the effectiveness of the optimized suppression method and the rationality of its parameter design.
低频振荡车-网系统主动阻尼抑制策略优化参数设计
low-frequency oscillationvehicle-network systemactive dampingsuppression strategy optimizationparameter design
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JIANG Xiaofeng, HU Haitao, YANG Xiaowei, et al. Analysis and adaptive mitigation scheme of low-frequency oscillations in AC railway traction power systems[J]. IEEE Transactions on Transportation Electrification, 2019, 5(3): 715-726.
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