CN108710089B - Phase monitoring method and phase detection device for track circuit power supply - Google Patents
Phase monitoring method and phase detection device for track circuit power supply Download PDFInfo
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- CN108710089B CN108710089B CN201810469272.4A CN201810469272A CN108710089B CN 108710089 B CN108710089 B CN 108710089B CN 201810469272 A CN201810469272 A CN 201810469272A CN 108710089 B CN108710089 B CN 108710089B
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- 238000005070 sampling Methods 0.000 claims description 13
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
- G01R31/42—AC power supplies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or vehicle train, e.g. pedals
- B61L1/18—Railway track circuits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or vehicle train, e.g. pedals
- B61L1/20—Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
Abstract
The embodiment of the invention provides a phase detection method and a phase detection device for a track circuit power supply, and belongs to the technical field of operation protection of railway signal power supplies. The detection method comprises the following steps: collecting the current voltage value of a local power supply and the current voltage value of a track power supply; calculating a phase angle of the local power supply according to the current voltage value, the previous voltage value and the voltage peak value of the local power supply, and calculating the phase angle of the rail power supply according to the current voltage value, the previous voltage value and the voltage peak value of the rail power supply; and determining a phase difference between the local power supply and the rail power supply according to the phase angle of the local power supply and the phase angle of the rail power supply. By the technical scheme, the phase difference between the local power supply and the track power supply can be accurately detected, and the operation reliability of the track circuit power supply is improved.
Description
Technical Field
The invention relates to the technical field of operation protection of railway signal power supplies, in particular to a phase detection method and a phase detection device for a track circuit power supply.
Background
The railway signal system is necessary infrastructure in the railway transportation process, can ensure the safety of railway traffic, can improve the transportation efficiency of railways, and has important significance for the railway traffic system. The track circuit is an important part of a railway signal system, realizes the detection of the position of the train, and can transmit the ground information to the locomotive so as to control the running of the train.
At present, a 25Hz phase-sensitive track circuit is widely adopted by a track circuit, a 25Hz track power supply screen is used as power supply equipment, a 220V/25Hz track power supply and a 110V/25Hz local power supply are provided for the track circuit, the local power supply strictly leads the track power supply by 90 degrees, and only a relay in the track circuit can be sucked up, so that the normal operation of the track circuit is ensured. Once the track power supply screen has a problem, the phase of the output track power supply and the phase of the local power supply do not meet the requirement, red light bands in a railway section can be caused, and the operation of the railway is seriously influenced.
The inventor of the present application has found that in actual operation there is no means to directly protect the phase relationship between the rail power supply and the local power supply. In the prior art, a sinusoidal signal is converted into a pulse signal through a comparator or a trigger, the pulse signal is counted and measured, and a phase difference is calculated by using a time difference. This conventional method requires many external hardware circuits, such as a pulse conversion circuit, etc., and has low reliability and a complicated structure.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a phase detection method for a track circuit power supply and a phase detection apparatus for a track circuit power supply, which are used to solve one or more of the above technical problems.
In order to achieve the above object, an embodiment of the present invention provides a phase detection method for a track circuit power supply, including: collecting the current voltage value of a local power supply and the current voltage value of a track power supply; calculating a phase angle of the local power supply according to the current voltage value of the local power supply, the previous voltage value of the local power supply and the voltage peak value of the local power supply, and calculating the phase angle of the rail power supply according to the current voltage value of the rail power supply, the previous voltage value of the rail power supply and the voltage peak value of the rail power supply; and determining a phase difference between the local power supply and the rail power supply according to the phase angle of the local power supply and the phase angle of the rail power supply.
Optionally, the method further includes: comparing the determined phase difference of the local power supply and the rail power supply with a preset phase difference; and sending out a warning signal when the difference value between the determined phase difference and the preset phase difference exceeds a preset error value.
Optionally, the method further includes: uploading one or more of a phase angle of the local power supply, a phase angle of the track power supply, the determined phase difference of the local power supply and the track power supply, and a comparison result of the determined phase difference of the local power supply and the track power supply with a preset phase difference to a server.
Optionally, the calculating the phase angle of the local power supply according to the current voltage value of the local power supply, the previous voltage value of the local power supply, and the voltage peak value of the local power supply includes: determining a phase angle of the local power source according to the following equation:
wherein alpha is1Is the phase angle of the local power supply, A1Is the voltage peak of the local power supply, U1The current voltage value of the local power supply is obtained; under the condition that the current direction of the local power supply is a positive direction and the current voltage value of the local power supply is greater than the previous voltage value of the local power supply, the phase angle of the local power supply ranges from 0 degree to 90 degrees; at the current side of the local power supplyThe direction is positive, and under the condition that the current voltage value of the local power supply is smaller than the previous voltage value of the local power supply, the phase angle of the local power supply ranges from 90 degrees to 180 degrees; under the condition that the current direction of the local power supply is in a reverse direction and the current voltage value of the local power supply is smaller than the previous voltage value of the local power supply, the phase angle of the local power supply ranges from 180 degrees to 270 degrees; and under the condition that the current direction of the local power supply is in the opposite direction and the current voltage value of the local power supply is greater than the previous voltage value of the local power supply, the phase angle of the local power supply ranges from 270 degrees to 360 degrees.
Optionally, the calculating the phase angle of the rail power supply according to the current voltage value of the rail power supply, the previous voltage value of the rail power supply, and the voltage peak value of the rail power supply includes: determining a phase angle of the rail power supply according to the following formula:
wherein alpha is2Is the phase angle of the rail power supply, A2Is the voltage peak value, U, of the rail power supply2The current voltage value of the rail power supply is obtained; under the condition that the current direction of the rail power supply is a positive direction and the current voltage value of the rail power supply is greater than the last voltage value of the rail power supply, the range of the phase angle of the rail power supply is 0-90 degrees; under the condition that the current direction of the rail power supply is a positive direction and the current voltage value of the rail power supply is smaller than the previous voltage value of the rail power supply, the range of the phase angle of the rail power supply is 90-180 degrees; under the condition that the current direction of the rail power supply is in the opposite direction and the current voltage value of the rail power supply is smaller than the previous voltage value of the rail power supply, the range of the phase angle of the rail power supply is 180-270 degrees; and under the condition that the current direction of the rail power supply is in the opposite direction and the current voltage value of the rail power supply is greater than the previous voltage value of the rail power supply, the phase angle of the rail power supply ranges from 270 degrees to 360 degrees.
Correspondingly, the embodiment of the invention also provides a phase detection device for a track circuit power supply, which comprises: the acquisition module is connected with the local power supply and the rail power supply and used for acquiring the current voltage value of the local power supply and the current voltage value of the rail power supply; and the processing module is used for calculating a phase angle of the local power supply according to the current voltage value of the local power supply, the previous voltage value of the local power supply and the voltage peak value of the local power supply, calculating a phase angle of the rail power supply according to the current voltage value of the rail power supply, the previous voltage value of the rail power supply and the voltage peak value of the rail power supply, and determining a phase difference between the local power supply and the rail power supply according to the phase angle of the local power supply and the phase angle of the rail power supply.
Optionally, the collecting module includes: a sampling module; and the input end of the local power supply and the input end of the track power supply are respectively connected with the primary side of the synchronous transformer, and the secondary side of the synchronous transformer is connected with the sampling module.
Optionally, the apparatus further comprises: and the processing module is also used for comparing the determined phase difference between the local power supply and the track power supply with a preset phase difference and controlling the warning module to send out a warning signal when the difference value between the determined phase difference and the preset phase difference exceeds a preset error value.
Optionally, the apparatus further comprises: a communication module, connected to the processing module, for uploading one or more of the phase angle of the local power supply, the phase angle of the track power supply, the determined phase difference between the local power supply and the track power supply, and a comparison result between the determined phase difference between the local power supply and the track power supply and a preset phase difference to a server.
In another aspect, the present invention provides a machine-readable storage medium having stored thereon instructions for causing a machine to perform any one of the above-described phase detection methods for a track circuit power supply.
Through the technical scheme, the phase angle of the local power supply and the track power supply and the phase difference of the local power supply and the track power supply can be accurately determined. In addition, when the phase detection method provided by the embodiment of the invention is used for sampling the local power supply and the rail power supply, the collected electric signals do not need to be processed, so that the sampling circuit for collecting the local power supply and the rail power supply has the advantages of simple structure and high reliability.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 is a flow chart of a phase detection method for a track circuit power supply according to an embodiment of the present invention;
FIG. 2 is a flow chart of a phase detection method for a track circuit power supply according to an embodiment of the present invention;
FIG. 3 is a flow chart of a phase detection method for a track circuit power supply according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a phase detection apparatus for a track circuit power supply according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a phase detection apparatus for a track circuit power supply according to an embodiment of the present invention.
Description of the reference numerals
1 acquisition module and 2 processing module
3 local power supply 4 track power supply
5 synchronous transformer 6 sampling module
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a flowchart of a phase detection method for a track circuit power supply according to an embodiment of the present invention. As shown in fig. 1, the method includes: collecting the current voltage value of a local power supply and the current voltage value of a track power supply; determining a phase angle of the local power supply according to the current voltage value, the previous voltage value and the voltage peak value of the local power supply, and determining the phase angle of the rail power supply according to the current voltage value, the previous voltage value and the voltage peak value of the rail power supply; and determining a phase difference between the local power supply and the rail power supply according to the determined phase angle of the local power supply and the determined phase angle of the rail power supply.
The phase detection method for the track circuit power supply can further comprise the step of continuously acquiring the voltage value of the local power supply and the voltage value of the track power supply at the same time. When the phase detection of the track circuit power supply is carried out, the voltage value of the local power supply and the voltage value of the track power supply which are acquired at a certain moment are determined to be the current voltage value of the local power supply and the current voltage value of the local power supply; determining the voltage value of the local power supply and the voltage value of the rail power supply which are collected before the certain moment as the previous voltage value of the local power supply and the previous voltage value of the rail power supply; the voltage peak value of the local power supply and the voltage peak value of the rail power supply can be the maximum voltage value of the local power supply and the maximum voltage value of the rail power supply which are collected and recorded in a certain period of time.
Optionally, the calculating the phase angle of the local power supply according to the current voltage value, the previous voltage value and the voltage peak value of the local power supply includes: normalizing the current voltage value of the local power supply by using the voltage peak value of the local power supply; determining a phase angle range of the local power supply according to a comparison result of a current voltage value and a previous voltage value of the local power supply and a current direction of the local power supply; and determining the phase angle of the local power supply according to the data after the normalization processing and the determined phase angle range of the local power supply.
And the normalization processing is to divide the acquired current voltage value of the local power supply by the voltage peak value of the local power supply. The current voltage value of the local power supply can be processed into dimensionless data in the range of-1 to 1 through a normalization method, so that data calculation can be conveniently carried out at a later stage.
Specifically, the method for determining the range of the phase angle of the local power supply provided by the embodiment of the invention includes: under the condition that the current direction of the local power supply is a positive direction and the current voltage value of the local power supply is greater than the previous voltage value, the phase angle of the local power supply ranges from 0 degree to 90 degrees; under the condition that the current direction of the local power supply is a positive direction and the current voltage value of the local power supply is smaller than the previous voltage value of the local power supply, the range of the phase angle of the local power supply is 90-180 degrees; under the condition that the current direction of the local power supply is in a reverse direction and the current voltage value of the local power supply is smaller than the previous voltage value of the local power supply, the phase angle of the local power supply ranges from 180 degrees to 270 degrees; and under the condition that the current direction of the local power supply is in the opposite direction and the current voltage value of the local power supply is greater than the previous voltage value of the local power supply, the phase angle of the local power supply ranges from 270 degrees to 360 degrees.
Since the local power supply and the rail power supply are both ac power, the current direction of the ac power is periodically changed with time, and the current direction of the ac power also affects the range of the phase angle of the local power supply, for convenience of understanding, it can be described that the voltage value is positive when the current direction of the ac power is a positive direction, and the voltage value is negative when the current direction of the ac power is a negative direction.
After determining the range of phase angles of the local power sources, the phase angles of the local power sources may be determined according to the following equation (1):
wherein alpha is1Is the phase angle of the local power supply, A1Is the voltage peak of the local power supply, U1Is the current voltage value of the local power supply.
Accordingly, the range of phase angles of the rail power supply may also be determined by methods similar to those described above.
After determining the range of phase angles of the rail power supply, the phase angle of the rail power supply may be determined according to the following equation (2):
wherein alpha is2Is the phase angle of the rail power supply, A2For peak voltage of rail power supply, U2Is the current voltage value of the rail power supply.
In addition, when the local power supply and the rail power supply are collected, the voltage of the local power supply and the voltage of the rail power supply can be reduced without changing the phases of the local power supply and the rail power supply.
The phase detection method for a track circuit power supply provided by this embodiment of the present invention will now be explained with a set of specific data.
For example, the voltage peak value of the local power source detected for a certain period of time is A1The peak voltage value of the rail power supply is A (3.8V)2The current voltage value of the collected local power supply is U (3.5V)1The current voltage value of the rail power supply is U (3.57V)2＝1.19V。
Processing the current voltage value and the voltage peak value of the local power supply by utilizing a normalization method to obtain
Processing the current voltage value and the voltage peak value of the rail power supply by utilizing a normalization method to obtain
The current voltage value of the local power supply and the current voltage value of the rail power supply in the sampling are both positive numbers, which indicates that the current directions of the local power supply and the rail power supply are both positive directions at the moment.
In addition, according to the acquired voltage data of the local power supply, if the current voltage value of the local power supply is smaller than the previous voltage value, the phase angle of the local power supply at the moment is in a range of 90-180 degrees. According to the formula (1) provided by the embodiment of the invention
U1＝3.57V、A13.8V and alpha1E (90 deg., 180 deg.) can be determined, the phase angle of the local power supply is alpha1Arcsin (0.94) ═ 109.95 °; according to the voltage data of the collected rail power supply, if the current voltage value of the rail power supply is larger than the previous voltage value, the current voltage value of the rail power supply indicates that the current phase angle of the rail power supply ranges from 0 degrees to 90 degrees, and the formula (2) provided by the embodiment of the invention
U2＝1.19V、A23.5V and alpha2E (0 degree, 90 degrees) can be determined, and the phase angle of the track power supply is alpha2＝arcsin(0.34)＝19.88°。
Therefore, the phase difference between the local power supply and the rail power supply is | α at this time1-α2|＝90.07°。
The phase detection method for the track circuit power supply provided by the embodiment of the invention has the advantages of simple method and high reliability. In addition, when the phase detection method provided by the embodiment of the invention is used for sampling the local power supply and the rail power supply, the collected electric signals do not need to be processed, so that the sampling circuit for collecting the local power supply and the rail power supply has the advantages of simple structure and high reliability.
Fig. 2 is a flowchart of a phase detection method for a track circuit power supply according to an embodiment of the present invention. Compared with the phase detection method for the track circuit power supply provided by the embodiment shown in fig. 1, the scheme also considers the processing method when the phase difference between the local power supply and the track power supply is not in accordance with the regulation. Specifically, the method further comprises: collecting the current voltage value of a local power supply and the current voltage value of a track power supply; determining a phase angle of the local power supply according to the current voltage value, the previous voltage value and the voltage peak value of the local power supply, and determining the phase angle of the rail power supply according to the current voltage value, the previous voltage value and the voltage peak value of the rail power supply; determining a phase difference between the local power supply and the rail power supply according to the determined phase angle of the local power supply and the determined phase angle of the rail power supply; comparing the determined phase difference between the local power supply and the track power supply with a preset phase difference; and sending out a warning signal when the difference value between the determined phase difference and the preset phase difference exceeds a preset error value.
The preset error value can be set by a worker according to the actual working requirement. When the difference value between the determined phase difference between the local power supply and the track power supply and the preset phase difference meets the preset error value, a warning signal is not required to be sent out, and when the difference value between the determined phase difference and the preset phase difference exceeds the preset error value, the warning signal is sent out.
Optionally, the method may further include sending a warning signal when a difference between a phase difference between the local power source and the track power source sampled for multiple times and a preset phase difference exceeds a preset error value within a continuous time period.
Because the current track circuit requires that the local power supply strictly advance the track power supply by 90 °, the preset phase difference is 90 °. However, when the phase detection method provided by the embodiment of the invention is used for detecting the phase difference of other power supplies, the preset phase difference is not limited to 90 degrees and can be set by a worker according to the actual working requirement.
For example, the preset error value δ may be set to 2 °, and the preset phase difference may be set to 90 °. According to the above embodiment, it has been determined that the voltage peak at the local power supply is A1The peak voltage value of the rail power supply is A (3.8V)2Current voltage value of local power supply is U (3.5V)1The current voltage value of the rail power supply is U (3.57V)2When the current voltage of the local power supply is less than the previous voltage and the current voltage of the rail power supply is greater than the previous voltage, the phase difference between the local power supply and the rail power supply is | α V1-α290.07 deg.. At this time, the difference between the phase difference between the local power supply and the rail power supply and the preset phase difference (90 °) is 0.07 °, and the preset error value 2 ° is satisfied. Therefore, the local power supply and the rail power supply are in a normal operation state, and a warning signal does not need to be sent out.
Optionally, the warning signal may be issued by a warning device. For example, the alarm is given by a buzzer alarm or the indicator light is flickered to achieve the purpose of warning. Or the comparison result of the determined phase difference between the local power supply and the track power supply and the preset phase difference can be displayed through the display device, and when the comparison result of the phase difference between the local power supply and the track power supply and the preset phase difference exceeds the preset error value, the phase difference between the local power supply and the track power supply can be displayed through the display interface to prompt a worker that the phase difference between the local power supply and the track power supply has problems and needs to be processed in time.
The phase detection method for the track circuit power supply provided by the embodiment of the invention can send out a warning signal when detecting that the difference value between the phase difference between the local power supply and the track power supply and the preset phase difference exceeds a preset error value, so that a worker is timely reminded that the current track circuit power supply is abnormal, and the reliability of detecting the track circuit power supply is improved.
Fig. 3 is a flowchart of a phase detection method for a track circuit power supply according to an embodiment of the present invention. This scheme also allows for storage and transmission of data, as compared to the phase detection method for track circuit power supply shown in fig. 2. Specifically, the method comprises the following steps: collecting the current voltage value of a local power supply and the current voltage value of a track power supply; determining a phase angle of the local power supply according to the current voltage value, the previous voltage value and the voltage peak value of the local power supply, and determining the phase angle of the rail power supply according to the current voltage value, the previous voltage value and the voltage peak value of the rail power supply; determining a phase difference between the local power supply and the rail power supply according to the determined phase angle of the local power supply and the determined phase angle of the rail power supply; comparing the determined phase difference between the local power supply and the track power supply with a preset phase difference; when the difference value between the determined phase difference and the preset phase difference exceeds a preset error value, sending out a warning signal; and uploading one or more of the acquired phase angle of the local power supply, the phase angle of the track power supply, the determined phase difference of the local power supply and the track power supply and a comparison result of the determined phase difference of the local power supply and the track power supply and a preset phase difference to a server.
After one or more of the acquired phase angle of the local power supply, the phase angle of the track power supply, the determined phase difference between the local power supply and the track power supply and a comparison result between the determined phase difference between the local power supply and the track power supply and a preset phase difference are uploaded to the server, the staff can store and record the data, and data statistics and recording are facilitated.
Optionally, the collected data of the current voltage value, the previous voltage value, the voltage peak value of the local power supply, the current voltage value, the previous voltage value, the voltage peak value of the rail power supply, and the like may also be uploaded to the server.
The staff can carry out statistics according to one or more of the transmitted phase angle of the collected local power supply, the phase angle of the track power supply, the determined phase difference of the local power supply and the track power supply, the comparison result of the determined phase difference of the local power supply and the track power supply and the preset phase difference, the current voltage value of the collected local power supply, the previous voltage value, the voltage peak value, the current voltage value of the track power supply, the previous voltage value and the voltage peak value. For example, a local power supply voltage variation line graph, a phase difference variation line graph of the local power supply and the track power supply, and the like may be plotted.
Fig. 4 is a schematic structural diagram of a phase detection apparatus for a track circuit power supply according to an embodiment of the present invention. As shown in fig. 4, the phase detecting apparatus for a track circuit power supply includes: the acquisition module 1 is connected with the local power supply and the rail power supply and used for acquiring the current voltage value of the local power supply and the current voltage value of the rail power supply; and the processing module 2 is connected with the acquisition module 1 and is used for calculating a phase angle of the local power supply according to the current voltage value, the previous voltage value and the voltage peak value of the local power supply, calculating a phase angle of the rail power supply according to the current voltage value, the previous voltage value and the voltage peak value of the rail power supply, and determining a phase difference between the local power supply and the rail power supply according to the phase angle of the local power supply and the phase angle of the rail power supply.
Specifically, the processing module 2 may determine the phase angle of the local power supply, the phase angle of the track power supply, the phase difference between the local power supply and the track power supply, and the like according to the phase detection method for the track circuit power supply provided in other embodiments in this specification.
Optionally, the phase detection apparatus for a track circuit power supply provided in the embodiment of the present invention further includes an alarm module connected to the processing module 2. The processing module 2 is further configured to compare the determined phase difference between the local power supply and the track power supply with a preset phase difference, and control the warning module to send a warning signal when a difference between the determined phase difference and the preset phase difference exceeds a preset error value.
The warning module can be a buzzer alarm, an indicator light and other devices capable of sending warning signals.
Optionally, the phase detection apparatus for a track circuit power supply provided in the embodiment of the present invention further includes a communication module connected to the processing module 2. One or more of the phase angle of the local power supply, the phase angle of the rail power supply, the determined phase difference between the local power supply and the rail power supply and the comparison result between the determined phase difference between the local power supply and the rail power supply and the preset phase difference can be uploaded to a server through the communication module, so that the later-stage checking and statistical analysis of workers can be facilitated.
Fig. 5 is a schematic structural diagram of a detection apparatus for a track circuit power supply according to an embodiment of the present invention. As shown in fig. 5, the acquisition module 1 includes a sampling module 6 and a synchronous transformer 5. Specifically, the input end of the local power supply 3 is connected with the primary side of the synchronous transformer 5, the input end of the track power supply 4 is connected with the primary side of the synchronous transformer 5, and the sampling module 6 is connected with the secondary side of the synchronous transformer 5 and then connected with the processing module 2.
The processing module 2 includes an a/D conversion module. The local power supply is 25Hz/110V, the track power supply is 25Hz/110V, and because the sampling voltage of the A/D conversion module cannot exceed 5V under the general condition, the voltage is reduced through the synchronous transformer 5 under the condition of not changing the phase positions of the original local power supply and the track power supply, and the voltage value of the two power supplies at the same time can be acquired simultaneously.
For the details and advantages of the detection apparatus provided by the present invention, reference may be made to the above description of the detection method provided by the present invention, and further description is omitted here.
Accordingly, an embodiment of the present invention further provides a machine-readable storage medium, which stores instructions for causing a machine to execute the above-mentioned phase detection method.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
Those skilled in the art will understand that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to enable a single chip, a chip, or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (8)
1. A phase detection method for a track circuit power supply, the method comprising:
collecting the current voltage value of a local power supply and the current voltage value of a track power supply;
calculating a phase angle of the local power supply according to the current voltage value of the local power supply, the previous voltage value of the local power supply and the voltage peak value of the local power supply, and calculating the phase angle of the rail power supply according to the current voltage value of the rail power supply, the previous voltage value of the rail power supply and the voltage peak value of the rail power supply; and
determining a phase difference of the local power source and the rail power source according to the phase angle of the local power source and the phase angle of the rail power source,
wherein the calculating the phase angle of the local power supply according to the current voltage value of the local power supply, the previous voltage value of the local power supply, and the voltage peak value of the local power supply comprises: determining a phase angle of the local power source according to the following equation:
wherein alpha is1Is the phase angle of the local power supply, A1Is the voltage peak of the local power supply, U1The current voltage value of the local power supply is obtained;
under the condition that the current direction of the local power supply is a positive direction and the current voltage value of the local power supply is greater than the last voltage value of the local power supply, the phase angle of the local power supply ranges from 0 degree to 90 degrees;
under the condition that the current direction of the local power supply is a positive direction and the current voltage value of the local power supply is smaller than the previous voltage value of the local power supply, the range of the phase angle of the local power supply is 90-180 degrees;
under the condition that the current direction of the local power supply is in a reverse direction and the current voltage value of the local power supply is smaller than the previous voltage value of the local power supply, the phase angle of the local power supply ranges from 180 degrees to 270 degrees; and
in the case where the current direction of the local power supply is the reverse direction and the present voltage value of the local power supply is greater than the previous voltage value of the local power supply, the phase angle of the local power supply ranges from 270 to 360,
wherein the calculating the phase angle of the rail power supply according to the current voltage value of the rail power supply, the last voltage value of the rail power supply and the voltage peak value of the rail power supply comprises: determining a phase angle of the rail power supply according to the following formula:
wherein alpha is2Is the phase angle of the rail power supply, A2Is the voltage peak value, U, of the rail power supply2The current voltage value of the rail power supply is obtained;
under the condition that the current direction of the rail power supply is a positive direction and the current voltage value of the rail power supply is greater than the last voltage value of the rail power supply, the range of the phase angle of the rail power supply is 0-90 degrees;
under the condition that the current direction of the rail power supply is a positive direction and the current voltage value of the rail power supply is smaller than the previous voltage value of the rail power supply, the range of the phase angle of the rail power supply is 90-180 degrees;
under the condition that the current direction of the rail power supply is in the opposite direction and the current voltage value of the rail power supply is smaller than the previous voltage value of the rail power supply, the range of the phase angle of the rail power supply is 180-270 degrees; and
and under the condition that the current direction of the track power supply is in the opposite direction and the current voltage value of the track power supply is greater than the previous voltage value of the track power supply, the phase angle of the track power supply ranges from 270 degrees to 360 degrees.
2. The detection method according to claim 1, characterized in that the method further comprises:
comparing the determined phase difference of the local power supply and the rail power supply with a preset phase difference; and
and when the difference value between the determined phase difference and the preset phase difference exceeds a preset error value, sending out a warning signal.
3. The detection method according to claim 2, characterized in that it comprises:
uploading one or more of a phase angle of the local power supply, a phase angle of the track power supply, the determined phase difference of the local power supply and the track power supply, and a comparison result of the determined phase difference of the local power supply and the track power supply with a preset phase difference to a server.
4. A phase detection apparatus for a track circuit power supply, the apparatus comprising:
the acquisition module is connected with the local power supply and the rail power supply and used for acquiring the current voltage value of the local power supply and the current voltage value of the rail power supply; and
a processing module, configured to calculate a phase angle of the local power source according to a current voltage value of the local power source, a previous voltage value of the local power source, and a voltage peak value of the local power source, calculate a phase angle of the rail power source according to a current voltage value of the rail power source, a previous voltage value of the rail power source, and a voltage peak value of the rail power source, and determine a phase difference between the local power source and the rail power source according to the phase angle of the local power source and the phase angle of the rail power source,
wherein the processing module is configured to calculate the phase angle of the local power source according to the current voltage value of the local power source, the previous voltage value of the local power source, and the voltage peak value of the local power source includes: determining a phase angle of the local power source according to the following equation:
wherein alpha is1Is the phase angle of the local power supply, A1Is the voltage peak of the local power supply, U1The current voltage value of the local power supply is obtained;
under the condition that the current direction of the local power supply is a positive direction and the current voltage value of the local power supply is greater than the last voltage value of the local power supply, the phase angle of the local power supply ranges from 0 degree to 90 degrees;
under the condition that the current direction of the local power supply is a positive direction and the current voltage value of the local power supply is smaller than the previous voltage value of the local power supply, the range of the phase angle of the local power supply is 90-180 degrees;
under the condition that the current direction of the local power supply is in a reverse direction and the current voltage value of the local power supply is smaller than the previous voltage value of the local power supply, the phase angle of the local power supply ranges from 180 degrees to 270 degrees; and
in the case where the current direction of the local power supply is the reverse direction and the present voltage value of the local power supply is greater than the previous voltage value of the local power supply, the phase angle of the local power supply ranges from 270 to 360,
the processing module is used for calculating the phase angle of the rail power supply according to the current voltage value of the rail power supply, the previous voltage value of the rail power supply and the voltage peak value of the rail power supply, and comprises: determining a phase angle of the rail power supply according to the following formula:
wherein alpha is2Is the phase angle of the rail power supply, A2Is the voltage peak value, U, of the rail power supply2The current voltage value of the rail power supply is obtained;
under the condition that the current direction of the rail power supply is a positive direction and the current voltage value of the rail power supply is greater than the last voltage value of the rail power supply, the range of the phase angle of the rail power supply is 0-90 degrees;
under the condition that the current direction of the rail power supply is a positive direction and the current voltage value of the rail power supply is smaller than the previous voltage value of the rail power supply, the range of the phase angle of the rail power supply is 90-180 degrees;
under the condition that the current direction of the rail power supply is in the opposite direction and the current voltage value of the rail power supply is smaller than the previous voltage value of the rail power supply, the range of the phase angle of the rail power supply is 180-270 degrees; and
and under the condition that the current direction of the track power supply is in the opposite direction and the current voltage value of the track power supply is greater than the previous voltage value of the track power supply, the phase angle of the track power supply ranges from 270 degrees to 360 degrees.
5. The detection device according to claim 4, wherein the acquisition module comprises:
a sampling module; and
and the input end of the local power supply and the input end of the track power supply are respectively connected with the primary side of the synchronous transformer, and the secondary side of the synchronous transformer is connected with the sampling module.
6. The detection device of claim 4, further comprising:
and the processing module is also used for comparing the determined phase difference between the local power supply and the track power supply with a preset phase difference and controlling the warning module to send out a warning signal when the difference value between the determined phase difference and the preset phase difference exceeds a preset error value.
7. The detection device of claim 6, further comprising:
a communication module, connected to the processing module, for uploading one or more of the phase angle of the local power supply, the phase angle of the track power supply, the determined phase difference between the local power supply and the track power supply, and a comparison result between the determined phase difference between the local power supply and the track power supply and a preset phase difference to a server.
8. A machine readable storage medium having stored thereon instructions for causing a machine to perform the method of any one of claims 1 to 3 for phase detection of a track circuit power supply.
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| CN109625038B (en) * | 2018-12-27 | 2020-12-18 | 合肥工大高科信息科技股份有限公司 | Track circuit state identification system and method |
| CN111722013A (en) * | 2020-06-24 | 2020-09-29 | 合肥工大高科信息科技股份有限公司 | Method and system for detecting 25hz phase-sensitive track circuit signal |
| CN111751608A (en) * | 2020-06-24 | 2020-10-09 | 合肥工大高科信息科技股份有限公司 | Station phase-sensitive track signal detection device |
| CN113358932A (en) * | 2021-05-11 | 2021-09-07 | 北京首钢自动化信息技术有限公司 | Device and method for detecting synchronous phase angle of medium-voltage frequency converter |
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