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Intelligent railway high-speed train electromagnetic compatibility prediction system

An electromagnetic compatibility and high-speed train technology, which is applied in the direction of measuring electricity, measuring devices, and measuring electrical variables, etc., can solve the problems of extremely complicated electromagnetic disturbance coupling mechanism, excessive calculation amount, and high equipment density, so as to reduce modeling and simulation calculations time, reduced complexity, and improved forecast accuracy

Pending Publication Date: 2021-08-17
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD +4
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AI Technical Summary

Problems solved by technology

[0002] The electromagnetic compatibility of railway high-speed trains refers to the state that the internal equipment, subsystems and systems of high-speed trains can work normally without interfering with each other in a common electromagnetic environment; that is, when the electromagnetic compatibility of high-speed trains meets the requirements, Any equipment, sub-systems, and systems inside it should be free from interference and not interfere with the normal operation of other equipment; in the initial design of high-speed trains, considering electromagnetic compatibility issues, the traction transformers, traction converters, traction motors, high-voltage equipment Main high-power and high-voltage equipment such as storage box, inverter power supply, brake control device, air compressor, and battery box are arranged under the train, and network communication, train control, and DC and low-voltage AC equipment are arranged on the train. However, due to the high-speed train space Limited, resulting in extremely high equipment density, intricate connection of power supply cables and signal control cables between high-voltage and low-voltage equipment, coupled with complex system structure and various equipment operation modes, resulting in various formation mechanisms and characteristics of electromagnetic disturbance sources inside high-speed trains, electromagnetic disturbance The coupling mechanism is extremely complex, and a device or system may become a source of electromagnetic interference to other devices or systems while it is a disturbed device under certain conditions; these make it difficult to analyze the electromagnetic compatibility of high-speed trains and difficult to control electromagnetic interference; Analyzing the electromagnetic compatibility of a certain equipment or device of a high-speed train cannot comprehensively and effectively analyze the electromagnetic compatibility of a high-speed train. However, the calculation method is too large, the calculation time is too long, and the calculation results are difficult to converge; therefore, from the perspective of reducing the complexity of the electromagnetic compatibility analysis of high-speed trains, reducing the modeling and simulation calculation time, and improving the prediction accuracy , comprehensively and systematically consider the characteristics of electromagnetic disturbance sources, electromagnetic disturbance transmission channels and sensitive equipment of high-speed trains, and find a new modeling and prediction method to realize the system-level electromagnetic compatibility prediction and analysis of high-speed trains.

Method used

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  • Intelligent railway high-speed train electromagnetic compatibility prediction system
  • Intelligent railway high-speed train electromagnetic compatibility prediction system
  • Intelligent railway high-speed train electromagnetic compatibility prediction system

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Embodiment 1

[0021] Example 1: When the high-speed train reaches a certain speed, the opening and closing of the main circuit breaker will cause a large number of high-voltage conduction pulse disturbances, which are transmitted to the power port of the equipment along with the power supply line. Due to the limited space inside the train, the power supply line and the signal line are parallel The crosstalk between lines is serious. As a main coupling path of electromagnetic disturbance of high-speed trains, crosstalk between lines is a part that must be studied in the prediction and analysis of electromagnetic compatibility of high-speed trains; electromagnetic waves on transmission lines propagate in transverse electromagnetic wave mode, that is, electric field and magnetic field There is no component along the direction of the transmission line, the transmission line spacing is wide enough, the charge and current distribution around the transmission line is essentially uniform, and there i...

Embodiment 2

[0025] Embodiment 2: the high-speed train integrates electronic and electrical equipment such as multiple high-voltage high-power equipment, weak current signal control equipment, network communication equipment, etc., and its internal electromagnetic interference sources are numerous, and the formation mechanism and interference characteristics are various; under certain circumstances , a specific interference source will become a disturbed device of another system or device (interference source), and a specific disturbed device itself may also be an interference source of another system or device (disturbed device);

[0026] When the on-board equipment of high-speed trains is arranged, traction transformers, converters, traction motors and high-power equipment are usually placed on the bottom of the train, and low-voltage and weak-current equipment such as signal control and network communication are placed in the vehicle to avoid high-voltage and high-power equipment from con...

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Abstract

The invention relates to an intelligent railway high-speed train electromagnetic compatibility prediction system, which comprises electromagnetic compatibility between single objects, electromagnetic compatibility generated by interaction between modules formed by different or different numbers of the same object. The electromagnetic compatibility problem caused by interaction between groups formed by randomly combining the plurality of modules according to constraint conditions such as environmental factors and equipment placement can be solved; and the electromagnetic compatibility of the whole train system is finally determined. Through the system, the electromagnetic compatibility problem of the train can be flexibly and reliably analyzed, the complexity is reduced, the calculation time is shortened, and the prediction precision is improved.

Description

technical field [0001] The invention relates to the field of rail transit electromagnetic compatibility, and is an intelligent electromagnetic compatibility prediction system for railway high-speed trains. Background technique [0002] The electromagnetic compatibility of railway high-speed trains refers to the state that the internal equipment, subsystems and systems of high-speed trains can work normally without interfering with each other in a common electromagnetic environment; that is, when the electromagnetic compatibility of high-speed trains meets the requirements, Any equipment, sub-systems, and systems inside it should be free from interference and not interfere with the normal operation of other equipment; in the initial design of high-speed trains, considering electromagnetic compatibility issues, the traction transformers, traction converters, traction motors, high-voltage equipment Main high-power and high-voltage equipment such as storage box, inverter power s...

Claims

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Application Information

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IPC IPC(8): G01R31/00
CPCG01R31/001G01R31/008
Inventor 孙平穆晓彤赵塔宋刚商宝莹宋季磊
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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