CN-115542030-B - Power supply system identification method, system and related components

CN115542030BCN 115542030 BCN115542030 BCN 115542030BCN-115542030-B

Abstract

The application discloses a power supply type identification method which is applied to network pressure detection equipment of a multi-stream system railway vehicle and comprises the steps of acquiring network pressure signals according to an acquisition period; the network voltage mode is identified according to the instantaneous values of the network voltage signals of a plurality of acquisition periods in a preset time period, the network voltage mode is an alternating current mode or a direct current mode, the current direct current power supply mode is determined according to the instantaneous values of the network voltage signals in the preset time period if the network voltage mode is the direct current mode, and the current alternating current power supply mode is determined according to the instantaneous values and the frequency of the network voltage signals in the preset time period if the network voltage mode is the alternating current mode. The application identifies the power supply system through the existing network voltage detection equipment of the multi-flow rail transit vehicle, does not need to increase external equipment, reduces the cost and improves the identification accuracy. The application also discloses a power supply type identification system, electronic equipment, a multi-stream system railway vehicle and a computer readable storage medium, which have the beneficial effects.

Inventors

CHEN XIN
WEN YULIANG
FU GANG
HU JINGYU
PENG BIN
WANG YUE
WU YI
ZHOU ZHENBANG
TANG LONG

Assignees

中车株洲电力机车研究所有限公司

Dates

Publication Date: 20260505
Application Date: 20210629

Claims (11)

1. The utility model provides a power supply mode identification method which is characterized in that is applied to the network pressure check out test set of the rail vehicle of multithread system, and this power supply mode identification method includes: acquiring a network pressure signal according to an acquisition period; identifying a network voltage mode according to instantaneous values of the network voltage signals of a plurality of acquisition periods in a preset time period, wherein the network voltage mode is an alternating current mode or a direct current mode; If the network voltage mode is the direct current mode, determining a current direct current power supply mode according to the instantaneous value of the network voltage signal in the preset time period; If the network voltage mode is the alternating current mode, determining a current alternating current power supply mode according to the instantaneous value and the frequency of the network voltage signal in the preset time period; The process of identifying the network pressure mode according to the instantaneous values of the network pressure signals of a plurality of acquisition periods in a preset time period comprises the following steps: Judging whether the time when the instantaneous value of the network voltage signal in the preset time period is larger than a first preset value is larger than a first preset time or not; If yes, judging that the network voltage mode is a direct current mode; The process of identifying the network pressure mode according to the instantaneous values of the network pressure signals of a plurality of acquisition periods in a preset time period comprises the following steps: determining the maximum value and the minimum value of the network pressure signal of each acquisition period; Judging whether the time when the maximum value of the network voltage signal is larger than a fourth preset value and the time when the minimum value of the network voltage signal is smaller than a fifth preset value in the preset time period are both larger than a second preset time, wherein the fourth preset value is larger than the fifth preset value, and the fourth preset value and the fifth preset value are mutually opposite; if yes, judging that the network voltage mode is an alternating current mode; Determining a current direct current power supply mode according to the instantaneous value of the network voltage signal in the preset time period, including: Determining a current direct current power supply mode according to the instantaneous value of the network voltage signal acquired in one acquisition period closest to the current moment in a preset time period, or determining the current direct current power supply mode according to the average value of the instantaneous values of the network voltage signals in a plurality of acquisition periods in the preset time period; determining a current alternating current power supply mode according to the instantaneous value and the frequency of the network voltage signal in the preset time period, wherein the method comprises the following steps: Determining the voltage of the current alternating current power supply system according to the instantaneous value of the network voltage signal acquired in one acquisition period closest to the current moment in a preset time period, or determining the voltage of the current alternating current power supply system according to the average value of the instantaneous values of the network voltage signals in a plurality of acquisition periods in the preset time period; And determining the current alternating current power supply mode based on the voltage and the frequency of the network voltage signal in the preset time period.
2. The power supply system identification method according to claim 1, wherein the determining whether the time when the instantaneous value of the network voltage signal is greater than the first preset value in the preset time period is greater than the first preset time includes: If the instantaneous value of the network voltage signal of the current acquisition period is greater than a first preset value, adding 1 to the first counter; If the instantaneous value of the network voltage signal of the current acquisition period is smaller than a second preset value, adding 1 to a second counter; judging whether the current time period obtained based on the current acquisition period and the initial time is larger than a preset time period or not; If not, repeating the operation of acquiring the network pressure signal according to the acquisition period; if yes, when the count value of the first counter is larger than the count value of the second counter, a third counter is increased by 1, otherwise, the third counter is decreased by 1; and when the count value of the third counter is larger than a third preset value, judging that the time when the instantaneous value of the network voltage signal is larger than the first preset value is longer than the first preset time.
3. The power supply system identification method according to claim 1, wherein the determining whether the time when the maximum value of the network voltage signal is greater than the fourth preset value and the time when the minimum value of the network voltage signal is less than the fifth preset value in the preset time period is greater than the second preset time includes: judging whether the maximum value of the network voltage signal in the current acquisition period is larger than a fourth preset value or not, and whether the minimum value of the network voltage signal is smaller than a fifth preset value or not; If yes, make the fourth counter add 1; if not, the fourth counter is decremented by 1; judging whether the current time period obtained based on the current acquisition period and the initial time is larger than a preset time period or not; If not, repeating the operation of acquiring the network pressure signal according to the acquisition period; If yes, judging whether the count value of the fourth counter is larger than a sixth preset value, and if yes, judging that the time when the maximum value of the network voltage signal is larger than the fourth preset value and the time when the minimum value of the network voltage signal is smaller than the fifth preset value in the preset time period is larger than the second preset time.
4. The power feeding pattern recognition method according to claim 1, further comprising: if the network voltage signal of the current acquisition period meets the initial zero crossing condition, controlling a fifth counter to start counting; Every time the network pressure signal is obtained, adding 1 to the fifth counter until the network pressure signal in the current obtaining period meets the target zero crossing condition, and controlling the fifth counter to stop counting; Obtaining the frequency of the network voltage signal according to the count value of the fifth counter; The initial zero crossing condition is that the instantaneous value of the network pressure signal in the previous acquisition period is smaller than 0, and the instantaneous value of the network pressure signal in the current acquisition period is larger than 0, and the target zero crossing condition is that the instantaneous value of the network pressure signal in the previous acquisition period is larger than 0, and the instantaneous value of the network pressure signal in the current acquisition period is smaller than 0.
5. A power supply system identification system, characterized by being applied to a network voltage detection device of a multi-stream rail vehicle, the power supply system identification system comprising: the acquisition module is used for acquiring the network pressure signal according to the acquisition period; The identification module is used for identifying a network voltage mode according to the instantaneous values of the network voltage signals of a plurality of acquisition periods in a preset time period, wherein the network voltage mode is an alternating current mode or a direct current mode, if the network voltage mode is the direct current mode, the current direct current power supply mode is determined according to the instantaneous values of the network voltage signals in the preset time period, and if the network voltage mode is the alternating current mode, the current alternating current power supply mode is determined according to the instantaneous values and the frequency of the network voltage signals in the preset time period; The process of identifying the network pressure mode according to the instantaneous values of the network pressure signals of a plurality of acquisition periods in a preset time period comprises the following steps: Judging whether the time when the instantaneous value of the network voltage signal in the preset time period is larger than a first preset value is larger than a first preset time or not; If yes, judging that the network voltage mode is a direct current mode; The process of identifying the network pressure mode according to the instantaneous values of the network pressure signals of a plurality of acquisition periods in a preset time period comprises the following steps: determining the maximum value and the minimum value of the network pressure signal of each acquisition period; Judging whether the time when the maximum value of the network voltage signal is larger than a fourth preset value and the time when the minimum value of the network voltage signal is smaller than a fifth preset value in the preset time period are both larger than a second preset time, wherein the fourth preset value is larger than the fifth preset value, and the fourth preset value and the fifth preset value are mutually opposite; if yes, judging that the network voltage mode is an alternating current mode; Determining a current direct current power supply mode according to the instantaneous value of the network voltage signal in the preset time period, including: Determining a current direct current power supply mode according to the instantaneous value of the network voltage signal acquired in one acquisition period closest to the current moment in a preset time period, or determining the current direct current power supply mode according to the average value of the instantaneous values of the network voltage signals in a plurality of acquisition periods in the preset time period; determining a current alternating current power supply mode according to the instantaneous value and the frequency of the network voltage signal in the preset time period, wherein the method comprises the following steps: Determining the voltage of the current alternating current power supply system according to the instantaneous value of the network voltage signal acquired in one acquisition period closest to the current moment in a preset time period, or determining the voltage of the current alternating current power supply system according to the average value of the instantaneous values of the network voltage signals in a plurality of acquisition periods in the preset time period; And determining the current alternating current power supply mode based on the voltage and the frequency of the network voltage signal in the preset time period.
6. The power supply system identification system according to claim 5, wherein the determining whether the time for which the instantaneous value of the network voltage signal is greater than the first preset value within the preset time period is greater than the first preset time includes: If the instantaneous value of the network voltage signal of the current acquisition period is greater than a first preset value, adding 1 to the first counter; If the instantaneous value of the network voltage signal of the current acquisition period is smaller than a second preset value, adding 1 to a second counter; judging whether the current time period obtained based on the current acquisition period and the initial time is larger than a preset time period or not; If not, repeating the operation of acquiring the network pressure signal according to the acquisition period; if yes, when the count value of the first counter is larger than the count value of the second counter, a third counter is increased by 1, otherwise, the third counter is decreased by 1; and when the count value of the third counter is larger than a third preset value, judging that the time when the instantaneous value of the network voltage signal is larger than the first preset value is longer than the first preset time.
7. The power supply system identification system according to claim 5, wherein the determining whether the time for which the maximum value of the network voltage signal is greater than the fourth preset value and the time for which the minimum value of the network voltage signal is less than the fifth preset value within the preset time period are both greater than the second preset time comprises: judging whether the maximum value of the network voltage signal in the current acquisition period is larger than a fourth preset value or not, and whether the minimum value of the network voltage signal is smaller than a fifth preset value or not; If yes, make the fourth counter add 1; if not, the fourth counter is decremented by 1; judging whether the current time period obtained based on the current acquisition period and the initial time is larger than a preset time period or not; If not, repeating the operation of acquiring the network pressure signal according to the acquisition period; If yes, judging whether the count value of the fourth counter is larger than a sixth preset value, and if yes, judging that the time when the maximum value of the network voltage signal is larger than the fourth preset value and the time when the minimum value of the network voltage signal is smaller than the fifth preset value in the preset time period is larger than the second preset time.
8. The power supply type recognition system according to claim 5, further comprising: The calculation module is used for controlling a fifth counter to start counting if the network pressure signal of the current acquisition period meets an initial zero crossing condition, adding 1 to the fifth counter every time the network pressure signal is acquired until the network pressure signal of the current acquisition period meets a target zero crossing condition, and controlling the fifth counter to stop counting; The initial zero crossing condition is that the instantaneous value of the network pressure signal in the previous acquisition period is smaller than 0, and the instantaneous value of the network pressure signal in the current acquisition period is larger than 0, and the target zero crossing condition is that the instantaneous value of the network pressure signal in the previous acquisition period is larger than 0, and the instantaneous value of the network pressure signal in the current acquisition period is smaller than 0.
9. An electronic device, comprising: A memory for storing a computer program; a processor for implementing the steps of the power supply system identification method according to any one of claims 1-4 when executing said computer program.
10. A multi-stream rail vehicle comprising the electronic device of claim 9.
11. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, which when executed by a processor implements the steps of the power supply system identification method according to any one of claims 1-4.

Description

Power supply system identification method, system and related components Technical Field The application relates to the field of rail transit, in particular to a power supply type identification method, a power supply type identification system and related components. Background In order to meet the international market demands of various traction power supply modes across countries or regions, research on multi-stream rail vehicles is increased in recent years in China. The multi-stream system railway vehicle comprises a plurality of sets of hardware systems which are respectively matched with different traction power supply modes, and the hardware systems are switched to work under the different traction power supply modes. For multi-stream rail vehicles, the primary problem is how to accurately identify the traction power supply system, and once an error is identified, the traction power supply system is not matched with a hardware system, so that the risk of burning main circuit devices of the hardware system exists. In the prior art, a detection device is usually arranged outside a vehicle for detecting and identifying a power supply mode, so that on one hand, the cost is increased, on the other hand, the external detection device is required to perform data interaction with a TCU (Traction Control Unit ), a CCU (Center Control Unit, central control unit) and other control devices inside the multi-stream railway vehicle, and a detection result is sent to the TCU and/or the CCU, so that the problems of signal loss and the like exist in the interaction process, and the running stability of the multi-stream railway vehicle is reduced. Therefore, how to provide a solution to the above technical problem is a problem that a person skilled in the art needs to solve at present. Disclosure of Invention The application aims to provide a power supply system identification method, a system, electronic equipment, a multi-stream rail vehicle and a computer readable storage medium, wherein the power supply system is identified through the existing network pressure detection equipment of the multi-stream rail vehicle, no external equipment is required to be added, the cost is reduced, and the identification accuracy is improved. . In order to solve the technical problems, the application provides a power supply type identification method which is applied to network voltage detection equipment of a multi-stream rail vehicle and comprises the following steps: acquiring a network pressure signal according to an acquisition period; identifying a network voltage mode according to instantaneous values of the network voltage signals of a plurality of acquisition periods in a preset time period, wherein the network voltage mode is an alternating current mode or a direct current mode; If the network voltage mode is the direct current mode, determining a current direct current power supply mode according to the instantaneous value of the network voltage signal in the preset time period; And if the network voltage mode is the alternating current mode, determining the current alternating current power supply mode according to the instantaneous value and the frequency of the network voltage signal in the preset time period. Optionally, the process of identifying the network pressure mode according to the instantaneous values of the network pressure signals of a plurality of acquisition periods in a preset time period includes: Judging whether the time when the instantaneous value of the network voltage signal in the preset time period is larger than a first preset value is larger than a first preset time or not; If yes, judging that the network voltage mode is a direct current mode. Optionally, the determining whether the time when the instantaneous value of the network voltage signal in the preset time period is greater than the first preset value is greater than the first preset time includes: If the instantaneous value of the network voltage signal of the current acquisition period is greater than a first preset value, adding 1 to the first counter; If the instantaneous value of the network voltage signal of the current acquisition period is smaller than a second preset value, adding 1 to a second counter; judging whether the current time period obtained based on the current acquisition period and the initial time is larger than a preset time period or not; If not, repeating the operation of acquiring the network pressure signal according to the acquisition period; if yes, when the count value of the first counter is larger than the count value of the second counter, a third counter is increased by 1, otherwise, the third counter is decreased by 1; and when the count value of the third counter is larger than a third preset value, judging that the time when the instantaneous value of the network voltage signal is larger than the first preset value is longer than the first preset time. Optionally, the process of identifying the n