CN113467220A - Laser time synchronization device, time synchronization method and time synchronization network system for fault indicator - Google Patents
Laser time synchronization device, time synchronization method and time synchronization network system for fault indicator Download PDFInfo
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- CN113467220A CN113467220A CN202110761405.7A CN202110761405A CN113467220A CN 113467220 A CN113467220 A CN 113467220A CN 202110761405 A CN202110761405 A CN 202110761405A CN 113467220 A CN113467220 A CN 113467220A
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- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
- G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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Abstract
The invention provides a laser time setting device, a time setting method and a time setting network for a fault indicator, wherein the time setting device comprises a clock, a time setting module, a communication module, a processing module, a laser time setting transmitting module and a laser time setting receiving module; the time synchronization method periodically starts the laser time synchronization module to perform time synchronization; the time synchronization network is constituted by the time synchronization device described in the present invention, and operates using the time synchronization method described in the present invention.
Description
Technical Field
The invention relates to a laser time synchronization device and a laser time synchronization method for fault indicators, which are mainly used for accurately synchronizing the time of fault indicators of phase lines through laser, reducing time errors and achieving data synchronization.
Background
The existing transient recording type fault indicator is an online fault monitoring device developed for a 10kV overhead line. The apparatus is divided into A, B, C three-phase fault indicators and a collection unit. The fault indicator is arranged on the overhead line to collect the current of the overhead line; the collecting unit is arranged on a line pole, and time setting and data communication are carried out on each fault indicator through 433MHz wireless communication, and the time error of the collecting unit is about 100 ms. When a fault occurs, the fault indicator records waves of line current, marks time marks on the line current and sends the time marks to the collecting unit, the collecting unit aligns and combines A, B, C three-phase wave recording data through the time marks to form a wave recording file, and the wave recording file is uploaded to a background through 4G to be analyzed.
When time synchronization of the fault indicator is carried out through 433MHz wireless communication, the error is 100ms, and when the wave recording files are combined, the error is large, so that fault judgment is influenced. Meanwhile, 433MHz wireless communication is selected for wireless data transmission, which belongs to common frequency and is easy to be interfered and generate data errors. Finally, 433MHz wireless communication needs to work all the time, and the power consumption is large.
The invention sets the working period, activates the time synchronization device at regular time and carries out high-precision time synchronization through the laser system, thereby solving the problems.
Disclosure of Invention
The invention provides a laser time setting device for a fault indicator, which comprises a clock, a time service module, a communication module, a processing module, a laser time setting transmitting module and a laser time setting receiving module,
the clock is used for timing;
the time service module is used for acquiring standard time information;
the communication module is used for realizing data transmission and/or instruction transmission among the modules;
the processing module is used for processing line fault data and processing working instructions and comprises a collecting unit;
the laser time setting and transmitting module comprises a laser generator, a reflector, a meniscus lens and a driving circuit;
the laser time setting receiving module is connected with a clock and comprises a photoelectric converter, a convex lens, a filter membrane and a servo circuit;
the method is characterized in that:
the laser time synchronization device is started periodically, and when time synchronization is completed at least once in each operation period, the low-power consumption operation state is kept in the rest time in the operation period.
Further, the laser generator and the photoelectric converter are mounted on a movable platform.
Further, the meniscus lens and the convex lens are fixed on a device capable of moving axially and rotating radially.
Furthermore, the laser time setting transmitting module is arranged at a position lower than the laser time setting receiving module, and one laser time setting transmitting module can provide time setting information for a plurality of laser time setting receiving modules.
Further, the system also comprises a data storage module, wherein the data storage module is used for storing the fault data. 6. The laser time setting device for the fault indicator as claimed in claim 5, further comprising a networking module, wherein the networking module is used for reporting fault information to the upper computer, transmitting fault data and receiving instructions from the upper computer.
The invention also provides a laser time setting method for the fault indicator, which is characterized by comprising the following steps of:
s1: obtaining standard time information;
s2: activating the laser time setting transmitting module and the laser time setting receiving module;
s3: the standard time information is broadcasted and sent to the laser time setting receiving module through the laser time setting transmitting module;
s4: the laser time setting receiving module adjusts a clock corresponding to the laser time setting receiving module according to the received standard time information and starts to calculate a timing period;
s5: when the power line has a fault, the fault indicator records waves of the line, the clock time calibrated in the period is marked on the wave recording data, and then the wave recording data marked with the time is transmitted to a collecting unit in the processing module through the communication module; when the power line works normally, no operation is carried out;
s6: the laser time setting transmitting module and the laser time setting receiving module enter a dormant state;
s7: the clock completes the counting cycle and repeats step S1.
Further, the communication module is in a dormant state and is activated only in case of a failure.
Further, in step S4, when the power line fails, the communication module transmits the recording data to the collecting unit through the wireless channel.
The invention further provides a laser time setting network system for the fault indicator, which uses the laser time setting device for the fault indicator and the upper computer recorded in any one of the technical schemes of the laser time setting device, and is characterized by comprising at least 1 laser time setting device for the fault indicator.
The laser time setting device, the laser time setting method and the laser time setting network system for the fault indicator overcome the defects of large time setting error and the like in the conventional fault indicator.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention in an installed state;
FIG. 2 is a block diagram of a laser transmitter module in accordance with one embodiment of the present invention;
FIG. 3 is a circuit diagram of a laser transmitter module according to an embodiment of the present invention;
FIG. 4 is a diagram of a laser receiver module according to one embodiment of the present invention;
FIG. 5 is a circuit diagram of a laser receive module according to an embodiment of the present invention;
FIG. 6 is a schematic view of a fault indicator installation according to one embodiment of the present invention;
fig. 7 is a schematic view of the installation position of one embodiment of the present invention.
Detailed Description
The invention provides a laser time setting device, a laser time setting method and a laser time setting network system for a fault indicator. The time synchronization device can realize the accurate time synchronization of various lines, particularly fault indicators of power supply lines, and can save energy. The technical solution of the present invention will now be further described with reference to examples.
The first embodiment is as follows:
in one embodiment of the invention, the deployment is in a 10kV three-phase power supply line. A laser diode is used as a laser source, the 433MHz wireless communication module is used for transmitting wave recording data, and A, B, C three-phase wave recording data are processed and synthesized in the processing module to form a fault wave recording file.
As shown in fig. 1, in this embodiment, the laser time setting device of the fault indicator according to the present invention is divided into two parts. One part is mounted on the mast and the other part is 3 identical modules mounted on A, B, C three-phase cables, respectively. On the upper part of a 10kV three-phase power supply line pole, a laser time synchronization emission module, a 433MHz wireless communication module, a collection unit, a GPS time synchronization module and a 4G wireless module are integrated. And the part installed on the cable integrates a traditional fault indicator, a laser time setting receiving module and a 433MHz wireless communication module.
In the wire rod portion, the laser has directivity to the time-emitting module. As shown in fig. 2, a laser diode as a laser source is located near the focus of the concave reflector, the position of the laser diode can be manually adjusted, and after the adjustment is completed, the laser diode is fixed by a fixing screw. The reflecting surface of the concave reflector is opposite to the part mounted on the cable. The focus of a meniscus lens of the laser time setting transmitting module is also positioned near the laser diode and is used for changing the light path of the laser diode and expanding the coverage area of laser transmission. In this embodiment, a meniscus lens with a scattering angle of 90 ° is used.
As shown in fig. 3, in this embodiment, a MAX3850 chip is used as a laser generation driving module, and is activated at the start of each clock cycle under the control of a single chip, receives the time synchronization data transmitted from the single chip, and is modulated into the light wave emitted by the laser diode through driving.
In the line rod part, a singlechip is deployed as a processing module, and the processing module integrates a collection unit and an operation unit. The collecting unit is used for receiving single-phase line fault waveform data with time marks transmitted by the fault indicator, performing relevant processing in the collecting unit, performing operations such as time mark alignment and the like, and finally forming a fault waveform file. The arithmetic unit is used for forwarding standard time, processing data transmission among all function modules in the section of the line part, processing instruction transmission among fault indication networks and other arithmetic functions.
In the line bar part, a 4G radio module is deployed for assuming networking tasks. The networking task comprises network registration, network data transmission and the like. And a GPS time synchronization module is also deployed and used for receiving standard time information and calibrating the physical position of the device.
In the wire rod portion, bidirectional communication with the wire portion is realized by the 433MHz wireless communication module. The 433MHz wireless communication module is activated under the control of the singlechip. In the 433MHz wireless communication module, a phase flag bit is provided for marking different phase data and line pole part data. When wireless communication is carried out, the working mode is a broadcasting mode, and if the received data contains the same flag bit data as the received data, the data is received and processed. If the received data contains flag bit data different from the data itself, no operation is performed and the sleep state is entered.
In the embodiment, the parts mounted on the A, B, C three-phase cable have the same structure and perform the same function.
As shown in fig. 4, in the cable part, the laser light has directivity to the time receiver, and the photodiode is located on one side of the convex lens, installed near the focal point of the convex lens. The position of the photodiode can be manually adjusted, and after the position of the photodiode is adjusted, the photodiode is fixed through a fixing screw. The side of the convex lens different from the photodiode points in the direction of the wire rod portion. And a filter film is also attached to the outermost side of the laser pair receiving device and used for filtering out other light rays with the wavelength of 670 nm.
In the cable part, the fault indicator receives standard time service data from the laser time service receiving module and adjusts a self clock according to the standard time service data.
In the cable part, a 433MHz wireless communication module is also deployed. The 433MHz wireless communication module works in the same way as the above.
As shown in fig. 6, when the present embodiment is deployed, the pole portion is first installed on the pole about 2 meters below the cable, and then portions corresponding to A, B, C three-phase cables are respectively deployed on the cable at a horizontal distance of 1.5-2 meters from the pole. As shown in fig. 7, the light path transmitting direction of the laser time-setting transmitting module integrated on the portion of the wire rod is set to be biased towards the cable direction, so that the laser time-setting transmitting module transmits the time-setting signal to the laser time-setting receiving module. The laser time setting receiving module on the 3 cables is also set to be biased towards the direction of the line rod, so that the laser time setting receiving module receives the time setting signal sent by the laser time setting transmitting module.
As shown in fig. 5, in this embodiment, an operational amplifier is added to the servo circuit of the laser time tick receiving module for amplifying the received time tick signal.
According to the mode, after the laser timing devices are deployed at different places in the power transmission line, the 4G wireless modules on the multiple line pole parts are automatically networked. In this embodiment, the laser time synchronization device establishes a communication link with an upper computer by using a 4G wireless module as a network channel. After self-checking, the upper computer automatically traverses all the online laser time synchronization devices, and forms an IP/position mapping table of the online laser time synchronization devices according to the IP addresses reported by the laser time synchronization devices and the physical addresses acquired by the GPS time synchronization module.
When the time synchronization network operates, the fault indicator sleeps after self-checking. Each time setting device firstly obtains standard time information through a GPS, and transmits the standard time information to a corresponding laser time setting receiving module through a laser time setting transmitting module of a line rod part. And after the laser time setting receiving module receives the standard time information, the clock is adjusted according to the standard time, and a timing period is started. And the laser time setting receiving module and the laser time setting transmitting module enter a dormant state until the time setting period is finished, the next time setting period is started, and the operations are repeated.
In the time setting period, if the power supply line has no fault, the fault indicator and the 433MHz wireless communication module do not need to be started, and the dormant state is kept. If the power supply line has a fault, the fault indicator is automatically started under the driving of the fault signal, and fault waveform data in the power supply line is recorded. And then, reading the standard time signal subjected to time synchronization, marking a time mark in the fault waveform data, activating a 433MHz invalid communication module, and transmitting the phase fault waveform data to the mast part. And after the pole part receives A, B, C3 phase fault waveform data of the power transmission line, reading time scale data of 3 phase fault waveforms in the collecting unit, and generating a fault waveform file after aligning the time scales. The fault waveform file is sent to an upper computer through a 4G wireless module under the control of the single chip microcomputer and is processed or displayed by the upper computer. Meanwhile, the upper computer also judges the next working of the fault indicator according to the information contained in the fault waveform file, forms a working instruction, transmits the laser time setting device which uploads the fault waveform file back through the 4G wireless module, and is executed by the fault indicator.
The laser time tick device, the time tick method and the time tick network system for the fault indicator provided by the invention are described in detail above, and a specific example is applied in the description to explain the principle and the implementation of the invention, and the description of the above embodiment is only used to help understanding the method of the invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and the content of the present specification should not be construed as a limitation to the technical solution of the present invention.
Claims (10)
1. A laser time setting device for a fault indicator comprises a clock, a time service module, a communication module, a processing module, a laser time setting transmitting module and a laser time setting receiving module,
the clock is used for timing;
the time service module is used for acquiring standard time information;
the communication module is used for realizing data transmission and/or instruction transmission among the modules;
the processing module is used for processing line fault data and processing working instructions and comprises a collecting unit;
the laser time setting and transmitting module comprises a laser generator, a reflector, a meniscus lens and a driving circuit;
the laser time setting receiving module is connected with a clock and comprises a photoelectric converter, a convex lens, a filter membrane and a servo circuit;
the method is characterized in that:
the laser time synchronization device is started periodically, and when time synchronization is completed at least once in each operation period, the low-power consumption operation state is kept in the rest time in the operation period.
2. The laser time tick device for the fault indicator of claim 1 where the laser generator and the optical to electrical converter are mounted on a movable platform.
3. The laser time tick device for the fault indicator of claim 1 where the meniscus and convex lenses are fixed to an axially movable and radially rotatable device.
4. The laser time setting device for the fault indicator as claimed in claim 2 or 3, wherein the laser time setting transmitting module is installed at a position lower than the laser time setting receiving module, and one laser time setting transmitting module can provide time setting information to a plurality of laser time setting receiving modules.
5. The laser time tick device for the fault indicator of claim 4 further comprising a data storage module for storing fault data.
6. The laser time setting device for the fault indicator as claimed in claim 5, further comprising a networking module, wherein the networking module is used for reporting fault information to the upper computer, transmitting fault data and receiving instructions from the upper computer.
7. A laser time setting method for a fault indicator is characterized by comprising the following steps:
s1: obtaining standard time information;
s2: activating the laser time setting transmitting module and the laser time setting receiving module;
s3: the standard time information is broadcasted and sent to the laser time setting receiving module through the laser time setting transmitting module;
s4: the laser time setting receiving module adjusts a clock corresponding to the laser time setting receiving module according to the received standard time information and starts to calculate a timing period;
s5: when the power line has a fault, the fault indicator records waves of the line, the clock time calibrated in the period is marked on the wave recording data, and then the wave recording data marked with the time is transmitted to a collecting unit in the processing module through the communication module; when the power line works normally, no operation is carried out;
s6: the laser time setting transmitting module and the laser time setting receiving module enter a dormant state;
s7: the clock completes the counting cycle and repeats step S1.
8. The laser time tick method for a fault indicator of claim 7 where the communication module is in a sleep state and is activated only when a fault occurs.
9. The laser time pairing method for the fault indicator as claimed in claim 8, wherein in step S4, when the power line has a fault, the communication module transmits the recording data to the collecting unit through a wireless channel.
10. A laser time setting network system for a fault indicator, which comprises the laser time setting device for the fault indicator as claimed in any one of claims 1 to 6, and is characterized in that the laser time setting network system for the fault indicator at least comprises 2 laser time setting devices for the fault indicator and 1 upper computer.
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| CN202110761405.7A CN113467220B (en) | 2021-07-06 | 2021-07-06 | Laser time setting device, method and system for fault indicator |
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