CN-121978479-A - Bow net discharge simulation method, system, equipment and storage medium

CN121978479ACN 121978479 ACN121978479 ACN 121978479ACN-121978479-A

Abstract

The invention relates to the technical field of bow net discharge simulation, and discloses a bow net discharge simulation method, a system, equipment and a storage medium, wherein the method comprises the steps of storing electric energy through an energy storage unit; the method comprises the steps of storing electric energy in an energy storage unit, converting the electric energy into single-phase alternating current through an inverter, boosting the single-phase alternating current subjected to inversion to a preset high voltage through a boosting transformer and conveying the single-phase alternating current to a contact wire, controlling a pantograph to contact and separate from the contact wire according to a preset frequency and amplitude, and generating discharge in a pantograph-net gap to simulate a pantograph-net offline process. The high-voltage high-current bow net discharging simulation method and device achieve high-voltage high-current bow net discharging simulation under the condition of limited power supply power, the bow net discharging cannot impact a public power grid, and extra electromagnetic interference is avoided.

Inventors

ZHANG MINGZHI
BAI YINGJIE
SU ZHIGUO
LIU DONG
Meng Tianxu
HAN CONGYING

Assignees

北京全路通信信号研究设计院集团有限公司
中国国家铁路集团有限公司

Dates

Publication Date: 20260505
Application Date: 20260129

Claims (12)

1. The bow net discharge simulation method is characterized by comprising the following steps of: storing the electric energy through an energy storage unit; inverting the electric energy stored in the energy storage unit into single-phase alternating current through an inverter; boosting the single-phase alternating current after inversion to a preset high voltage through a boosting transformer, and conveying the single-phase alternating current to a contact line; And controlling the pantograph to contact and separate from the contact line according to preset frequency and amplitude, and generating discharge in the gap of the pantograph net so as to simulate the off-line process of the pantograph net.
2. The bow net discharge simulation method according to claim 1, wherein the energy storage unit includes a power supply, a rectifying charger, and a capacitor bank, and the storing of the electric energy by the energy storage unit includes: Providing three-phase alternating current through a power supply; And rectifying the three-phase alternating current into direct current by a rectifying charger, and charging the capacitor bank.
3. The bow net discharge simulation method according to claim 1, wherein the preset high voltage is 25kv.
4. The bow net discharge simulation method according to claim 1, wherein the inverter is a single-phase inverter.
5. The bow net discharge simulation method according to claim 1, wherein controlling contact and separation of the pantograph and the contact line at a preset frequency and amplitude comprises: And driving the contact line to move through a pneumatic vibration device so as to realize contact and separation between the pantograph and the contact line according to preset frequency and amplitude.
6. The bow net discharge simulation method according to claim 5, wherein the pneumatic vibration device is connected with the contact wire through an insulating pull rod, and the vibration frequency and amplitude of the contact wire are controlled by adjusting the air pressure and air quantity of the pneumatic vibration device.
7. The bow net discharge simulation method according to claim 1, wherein switching of a high voltage circuit supplying power to a contact line is controlled by a circuit breaker provided between the step-up transformer and the contact line.
8. The bow net discharge simulation method according to claim 1, wherein an equivalent load is connected between a low-voltage end of the step-up transformer and the pantograph; When the pantograph and the contact line are separated and discharged, the discharging current flows through the equivalent load of the pantograph and returns to the low-voltage end of the step-up transformer to form a discharging current loop.
9. The utility model provides a bow net simulation system that discharges which characterized in that includes pantograph and contact line, still includes: The energy storage unit is used for storing the electric energy; An inverter for inverting the electric energy stored in the energy storage unit into single-phase alternating current; the step-up transformer is used for boosting the single-phase alternating current after inversion to a preset high voltage and conveying the single-phase alternating current to the contact line; And the control unit is used for controlling the contact and separation of the pantograph and the contact line according to the preset frequency and amplitude, and generating discharge in the gap of the pantograph net so as to simulate the off-line process of the pantograph net.
10. The bow net discharge simulation system according to claim 9, wherein the energy storage unit comprises a power supply, a rectifying charger, and a capacitor bank; the power supply is used for providing three-phase alternating current; the rectifying charger is used for rectifying three-phase alternating current into direct current and charging the capacitor bank.
11. An electronic device, comprising: A processor and a memory; The memory is used for storing a computer program, and the processor calls the computer program stored in the memory to execute the bow net discharge simulation method according to any one of claims 1 to 8.
12. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program which, when executed by a processor, enables the processor to perform the bow net discharge simulation method according to any one of claims 1 to 8.

Description

Bow net discharge simulation method, system, equipment and storage medium Technical Field The disclosure relates to the technical field of bow net discharge simulation, in particular to a bow net discharge simulation method, a system, equipment and a storage medium, and especially relates to a laboratory high-voltage high-current bow net discharge simulation method. Background In the train operation process, short separation and contact phenomena between the pantograph and the overhead contact system, namely 'offline of the pantograph and the overhead contact system', are caused by unsmooth and vibration of the overhead contact system. The arc net goes through Cheng Hui offline and is accompanied with arc discharge and discharge phenomena, and the arc can generate electromagnetic radiation to cause interference to peripheral signal equipment, control equipment and communication equipment. Because the on-site investigation of the offline electromagnetic disturbance characteristics of the bow net is difficult, a corresponding simulation device needs to be built for analysis and research in a laboratory. The voltage of the railway contact net in China is 25kV, the current is hundreds of amperes when the high-speed rail is actually operated, the traction current of 200A is used for calculation, and the power requirement is 5 MW. In order to complete the bow net discharge simulation in a laboratory, the power supply capacity of a conventional laboratory is hundreds of kW, and two types of high-voltage small-current loop discharge and low-voltage large-current loop discharge are generally adopted, as shown in fig. 2 and 3, the voltage is increased by adopting a voltage regulator and a step-up transformer for the high-voltage small-current discharge, the high-voltage small-current bow net discharge simulation is realized by supplying power to a bow net gap through a series current limiting protection resistor, the voltage is reduced by adopting the voltage regulator and the step-down transformer for the low-voltage large-current discharge, and the low-voltage large-current bow net discharge simulation is realized by supplying power to the bow net gap. In practice, the voltage and the current have influence on the electromagnetic radiation characteristics of the bow net discharge, and the low-voltage large-current discharge and the high-voltage small-current discharge can not accurately simulate the high-voltage large-current discharge characteristics. In summary, the rated voltage of the overhead contact system is 25kV, the current flowing through the pantograph exceeds 200A under the conventional running condition, the high-voltage and high-current test condition is difficult to realize in a laboratory, and a high-voltage and low-current or low-voltage and high-current test device is often adopted in general scientific research work to conduct the offline characteristic research of the pantograph. The actual working condition that high voltage and heavy current cannot be accurately simulated by high voltage and heavy current or low voltage and heavy current is limited by the power supply capacity of a laboratory, the working condition simulation of high voltage and heavy current is difficult to directly realize, and the bow net discharge simulation method is provided for the bow net offline electromagnetic disturbance characteristic research, so that the problem to be solved is urgent at present. Disclosure of Invention The embodiment of the disclosure provides an arcade discharge simulation method, an arcade discharge simulation system, arcade discharge simulation equipment and a storage medium, so as to solve or alleviate one or more of the above technical problems in the prior art. According to one aspect of the present disclosure, there is provided an arcade discharge simulation method including: storing the electric energy through an energy storage unit; inverting the electric energy stored in the energy storage unit into single-phase alternating current through an inverter; boosting the single-phase alternating current after inversion to a preset high voltage through a boosting transformer, and conveying the single-phase alternating current to a contact line; And controlling the pantograph to contact and separate from the contact line according to preset frequency and amplitude, and generating discharge in the gap of the pantograph net so as to simulate the off-line process of the pantograph net. In one possible implementation manner, the energy storage unit includes a power supply, a rectifying charger and a capacitor bank, and stores electric energy through the energy storage unit, including: Providing three-phase alternating current through a power supply; And rectifying the three-phase alternating current into direct current by a rectifying charger, and charging the capacitor bank. In one possible implementation, the preset high pressure is 25kv. In one possible implementation, the inverter is a single-