列车机车谐波电流测量及电磁兼容性评估研究
发布时间：2018-07-20 11:59
【摘要】：伴随着我国经济的迅速发展,对于高速运输能力的需求日益增加,高速铁路进入全面发展的阶段。随着交直交型机车在高速铁路上的广泛应用,交流传动系统产生的谐波问题也日益突出,严重影响了铁路的安全性和正常运营。一方面牵引回流的谐波分量频率若落在轨道电路信号的带宽范围内,则会严重影响轨道电路系统的正常工作；另一方面,电力机车注入牵引网中的谐波电流在一定条件下会引发电网发生谐振,过电流或电压造成牵引供电系统故障等导致列车停运。因此,解决交流传动系统的谐波问题成为高速铁路亟需解决的技术难题之一。 论文在简单阐述了基于干扰的牵引供电系统结构的基础上,详细介绍了轨道交通机车车辆与轨道电路兼容性问题。依据CLC/TS50238-2《铁路应用-轨道交通机车车辆与列车检测系统的兼容性-第2部分：与轨道电路间的兼容性》标准,介绍了ZPW-2000和FTGS46/917两种轨道电路类型的干扰电流限值以及数据处理方法。而后,具体描述了谐波电流自动测量系统软硬件的详细实现,并对该谐波自动测试系统进行了功能验证,实验证明此套自动测试系统能够正常稳定工作,测试数据正确可靠。最后,利用此系统在某条高铁线路上进行实地试验,采集得到牵引电流数据进行分析,给出了机车车辆与轨道电路兼容性结论,牵引电流的主要谐波分布情况及主要谐波随列车工况变化规律。 对于牵引网谐振问题,论文首先论述了分布参数传输线理论及二端口等效π型模型,随后进一步针对多导体传输线系统,利用矩阵特征值分解的思想,将多导体传输线变换为单相传输线处理,通过理论推导的形式给出了已知终端电压、电流条件下电压、电流的通式闭解形式。然后运用多导体传输系统降阶模型中的阻抗降阶方法和导纳降阶方法,将牵引网多导体传输线系统等效为单相传输线等值π型模型进行研究。在Matlab仿真软件中建立牵引网谐振仿真模型,包括牵引网等效建模,电力机车等效建模,牵引变电所等效建模,研究牵引网谐振机理及影响谐振因素。运用研究结果解释了列车在实际运行过程中的牵引网谐振现象,对比实地采集的牵引电流谐波数据,证明了仿真结果的正确性,并根据仿真结果指出了抑制谐振的有效方法。
[Abstract]:With the rapid development of economy in our country, the demand for high-speed transportation capacity is increasing day by day, and high-speed railway has entered the stage of all-round development. With the wide application of AC-DC-AC locomotives in high-speed railway, the harmonic problem caused by AC transmission system is becoming more and more prominent, which seriously affects the safety and normal operation of railway. On the one hand, if the harmonic component frequency of traction reflux falls within the bandwidth of the track circuit signal, it will seriously affect the normal operation of the track circuit system; on the other hand, The harmonic current injected into the traction network of electric locomotives will lead to the resonance of the power network under certain conditions, and the overcurrent or voltage will lead to the breakdown of the traction power supply system, which will lead to the train outage. Therefore, to solve the harmonic problem of AC transmission system has become one of the technical problems urgently needed to be solved in high speed railway. On the basis of a brief description of the structure of traction power supply system based on interference, the compatibility between railway locomotive and rail circuit is introduced in detail in this paper. According to CLC / TS50238-2 < Railway Application-compatibility of Railway Locomotive and Rolling Stock and Train Detection system-part 2: compatibility with track Circuits > Standard, the interference current limits and data processing methods of ZPW-2000 and FTGS46 / 917 rail circuits are introduced. Then, the detailed realization of the hardware and software of the harmonic current automatic measurement system is described in detail, and the function of the harmonic automatic measuring system is verified. The experiment proves that the automatic testing system can work normally and stably, and the test data are correct and reliable. Finally, the system is used to carry out field tests on a high-speed railway line, and the traction current data are collected and analyzed, and the conclusion of the compatibility between locomotive and track circuit is given. The distribution of the main harmonics of the traction current and the variation of the main harmonics with the train working conditions. For the resonance problem of traction network, the theory of distributed parameter transmission line and the two-port equivalent 蟺 type model are discussed in this paper, and then the idea of matrix eigenvalue decomposition is used to solve the problem of multi-conductor transmission line system. The multi-conductor transmission lines are transformed into single-phase transmission lines and the general closed solutions of the known terminal voltage current voltage and current are given through theoretical derivation. Then, by using the impedance reduction method and admittance reduction method in the order reduction model of multi-conductor transmission system, the equivalent 蟺 type model of single-phase transmission line for traction network multi-conductor transmission line system is studied. The resonance simulation model of traction network is established in Matlab software, including equivalent modeling of traction network, equivalent modeling of electric locomotive and equivalent modeling of traction substation. The resonance mechanism of traction network and its influencing factors are studied. By using the research results, the resonance phenomenon of the traction network in the actual operation of the train is explained, and the validity of the simulation results is proved by comparing the harmonic data of the traction current collected in the field, and the effective method to suppress the resonance is pointed out according to the simulation results.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U223.63;TN03
本文编号：2133446
[Abstract]:With the rapid development of economy in our country, the demand for high-speed transportation capacity is increasing day by day, and high-speed railway has entered the stage of all-round development. With the wide application of AC-DC-AC locomotives in high-speed railway, the harmonic problem caused by AC transmission system is becoming more and more prominent, which seriously affects the safety and normal operation of railway. On the one hand, if the harmonic component frequency of traction reflux falls within the bandwidth of the track circuit signal, it will seriously affect the normal operation of the track circuit system; on the other hand, The harmonic current injected into the traction network of electric locomotives will lead to the resonance of the power network under certain conditions, and the overcurrent or voltage will lead to the breakdown of the traction power supply system, which will lead to the train outage. Therefore, to solve the harmonic problem of AC transmission system has become one of the technical problems urgently needed to be solved in high speed railway. On the basis of a brief description of the structure of traction power supply system based on interference, the compatibility between railway locomotive and rail circuit is introduced in detail in this paper. According to CLC / TS50238-2 < Railway Application-compatibility of Railway Locomotive and Rolling Stock and Train Detection system-part 2: compatibility with track Circuits > Standard, the interference current limits and data processing methods of ZPW-2000 and FTGS46 / 917 rail circuits are introduced. Then, the detailed realization of the hardware and software of the harmonic current automatic measurement system is described in detail, and the function of the harmonic automatic measuring system is verified. The experiment proves that the automatic testing system can work normally and stably, and the test data are correct and reliable. Finally, the system is used to carry out field tests on a high-speed railway line, and the traction current data are collected and analyzed, and the conclusion of the compatibility between locomotive and track circuit is given. The distribution of the main harmonics of the traction current and the variation of the main harmonics with the train working conditions. For the resonance problem of traction network, the theory of distributed parameter transmission line and the two-port equivalent 蟺 type model are discussed in this paper, and then the idea of matrix eigenvalue decomposition is used to solve the problem of multi-conductor transmission line system. The multi-conductor transmission lines are transformed into single-phase transmission lines and the general closed solutions of the known terminal voltage current voltage and current are given through theoretical derivation. Then, by using the impedance reduction method and admittance reduction method in the order reduction model of multi-conductor transmission system, the equivalent 蟺 type model of single-phase transmission line for traction network multi-conductor transmission line system is studied. The resonance simulation model of traction network is established in Matlab software, including equivalent modeling of traction network, equivalent modeling of electric locomotive and equivalent modeling of traction substation. The resonance mechanism of traction network and its influencing factors are studied. By using the research results, the resonance phenomenon of the traction network in the actual operation of the train is explained, and the validity of the simulation results is proved by comparing the harmonic data of the traction current collected in the field, and the effective method to suppress the resonance is pointed out according to the simulation results.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U223.63;TN03
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