CN110221236A - A kind of wireless calibration equipment of direct current instrument transformer and method of calibration based on GPRS communication - Google Patents
A kind of wireless calibration equipment of direct current instrument transformer and method of calibration based on GPRS communication Download PDFInfo
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- CN110221236A CN110221236A CN201910510971.3A CN201910510971A CN110221236A CN 110221236 A CN110221236 A CN 110221236A CN 201910510971 A CN201910510971 A CN 201910510971A CN 110221236 A CN110221236 A CN 110221236A
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- 238000004891 communication Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000005259 measurement Methods 0.000 claims abstract description 42
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The invention discloses a kind of wireless calibration equipments of direct current instrument transformer and method of calibration based on GPRS communication, described device includes multiple check systems, each of the multiple check system, it include: GPRS wireless communication module, wireless synchronization module, acquisition module and data processing module are measured, the GPRS wireless communication module with other check systems for carrying out wireless communication；The synchronization signal is sent to measurement acquisition module for receiving high-precision satellite time transfer synchronization signal by the wireless synchronization module；The measurement acquisition module is used for according to synchronization signal trigger data acquisition；The data processing module is used to carry out markers alignment to pretreated data and the received data of GPRS wireless communication module, and carries out contrast conting, obtains the check results of direct current instrument transformer to be measured；Described device and method solve direct current instrument transformer field calibration middle and long distance wiring difficulty, analog signals transmit bring voltage loss and remote asynchronous calibration problem at a distance.
Description
Technical field
The present invention relates to power measurement fields, wireless more particularly, to a kind of direct current instrument transformer based on GPRS communication
Calibration equipment and method of calibration.
Background technique
With the continuous development of propulsion and the direct current transportation of global energy Internet Construction, direct current instrument transformer application is also got over
Come it is more extensive, for guarantee DC transmission system safety and stability reliability service, need the measurement to direct current instrument transformer accurate and reliable
Property put forward higher requirements, direct current instrument transformer calibration detection needs will gradually increase.The direct current instrument transformer to have put into operation at present is logical
Factory testing has only often been carried out, space state has been nearly in direct current instrument transformer field calibration field, this is because direct current mutual inductance
The relevant standards system of device assay calibration establishes not perfect enough and direct current instrument transformer field calibration technology and equipment lag.Mesh
Preceding more and more Transformer Calibrator producers all have developed respective DC mutual inductor verification instrument, for direct current instrument transformer
Laboratory testing and field calibration detection, the basic calibration program for using the direct method of measurement, i.e., direct measurement standard mutual inductor and
Error calculation is carried out by the double sampling value of school mutual inductor and after converting to a sub-value.Since the direct current at DC converter station scene is mutual
Sensor ontology and its secondary measuring system are apart from each other, probably have 100 meters~500 meters, common direct current instrument transformer field calibration
Method generally uses wired and wireless two schemes, and wired calibration scheme is usually to use long-distance cable, optical fiber that direct current is mutual
The secondary singal of sensor test product is transferred to outdoor direct field or this side of the direct current instrument transformer of direct current valve hall and calibration is compared.Nothing
Line calibration program is usually that intercom or wireless WIFI local net mode is utilized to pass direct current instrument transformer test product sub-sampled signal
It is defeated to be calibrated to this side.Since direct current instrument transformer field calibration usually carries out during converter station interruption maintenance, live ring
Border is complicated, and DC converter station is laid with long-distance cable, optical fiber has very big drawback, the calibrating mode of intercom can not be accomplished together
Step calibration, wireless WIFI mode signal cover is small, needs to build additional network relay equipment.In addition, analog output
Direct current instrument transformer output signal in the cable at a distance transmit when there are voltage loss, the calibration for influencing direct current instrument transformer is reliable
Property.
Summary of the invention
Complicated in order to solve existing direct current instrument transformer calibration scene existing for background technique, synchronism is poor, wirelessly covers
Lid range is small, and it is unreliable that voltage loss etc. leads to problems such as to calibrate, and the present invention provides a kind of direct current based on GPRS communication is mutual
It communicates and leads to using GPRS between multiple wireless check systems of sensor is wireless calibration equipment and method of calibration, described device and method
GPS and/or Beidou wireless synchronization are crossed, spatially more ground synchronous data collection is realized and calculates the technology effect of check results
Fruit, it is described it is a kind of based on GPRS communication the wireless calibration equipment of direct current instrument transformer include multiple check systems, the multiple verification
Each of system, comprising:
GPRS wireless communication module, the GPRS wireless communication module with other check systems for carrying out wireless communication；
The GPRS wireless communication module is used to receive the data of other check systems, and received data are sent to data processing mould
Block；The GPRS wireless communication module is used to the pretreated data of data processing module being sent to other check systems；
Wireless synchronization module, the wireless synchronization module are used to receive the high-precision satellite for communicating and obtaining with satellite system and award
When synchronization signal, and the synchronization signal is sent to measurement acquisition module；The satellite system include GPS satellite system and
Beidou satellite system；Acquisition module is measured, the measurement acquisition module is used for according to synchronization signal trigger data acquisition；The survey
The acquisition input terminal of amount acquisition module is connected with direct current instrument transformer, for acquiring the data of direct current instrument transformer；The measurement acquisition
Module is used to the collected data being sent to data processing module；
Data processing module, the data processing module are used to pre-process the data of measurement acquisition module acquisition,
Obtain the data for meeting preset format standard；The data processing module is used for pretreated data and GPRS channel radio
Believe that the received data of module carry out markers alignment, and carry out contrast conting, obtains the check results of direct current instrument transformer to be measured.
Further, each of the multiple check system is with two kinds of operational modes of host mode and slave mode；
When the measurement acquisition module of the check system is connected with direct current instrument transformer to be measured, the check system be in from
Machine mode, the GPRS wireless communication module are used to for pretreated data being sent to the check system of corresponding host mode
In；
When the measurement acquisition module of the check system is connected with standard direct current instrument transformer, the check system is in master
Machine mode, the GPRS wireless communication module are used to receive the data of the check system that other be in slave mode, and calculating from
The check results of the corresponding direct current instrument transformer to be measured of the data of machine mode.
Further, described device further includes host computer；
Received satellite information is sent to standard NMEA agreement by serial communication interface by the wireless synchronization module
Host computer；
The host computer calculates satellite connection quantity and judges time service pulse per second (PPS) synchronization signal accuracy, when host computer judges
The synchronization signal is not up to the standard of preset accuracy, then to the wireless synchronization module feedback synchronous abnormality information.
Further, the GPRS wireless communication module includes processing submodule, GPRS submodule and serial communication
Module；
The processing submodule is used to add time scale information for data, and the data for being added to time scale information are sent to string
Port communications submodule and GPRS submodule；The data include pretreated data and received data；
The serial communication submodule is for realizing the data between the GPRS wireless communication module and data processing module
It sends and receives；
The GPRS submodule is used to carry out wireless communication with the GPRS submodule of other check systems.
Further, the processing submodule is the high-performance embedded processor of ARM7.
Further, the GPRS submodule is used to realize wireless transmission and the reception of data by SIM mobile phone card, described
GPRS submodule with the Cloud Server with fixed ip address for being communicated；The GPRS wireless communication module support 2G,
3G and 4G radio band.
Further, the measurement acquisition module include high-precision A D Acquisition Circuit submodule；The high-precision A D adopt
Collector submodule is used to acquire the output signal of direct current instrument transformer；The measurement acquisition module includes external sync triggering interface
And analog measurement interface, one end of the analog measurement interface and high-precision A D Acquisition Circuit submodule input terminal
It is connected, the other end is connected with direct current instrument transformer output end to be measured；The external sync triggering interface is used for and wireless synchronization module
It is connected.
It is described it is a kind of based on GPRS communication the wireless method of calibration of direct current instrument transformer include:
Check system in host mode is connect with standard direct current instrument transformer, the check system of slave mode will be in
It is connect with direct current instrument transformer to be measured；
Multiple check systems correspond to the data of direct current instrument transformer according to high-precision satellite time transfer synchronization signal, synchronous acquisition；
The high-precision satellite time transfer synchronization signal includes GPS satellite system according to acquisition, the satellite system is communicated with satellite system
And Beidou satellite system；
The data of acquisition are sent to by the check system in slave mode by GPRS wireless communication module to be in
The check system of host mode；
The checking system in host mode carries out markers by the data to received data and the machine acquisition
Alignment, and contrast conting is carried out, obtain the check results of direct current instrument transformer to be measured.
Further, the data of acquisition are passed through into GPRS wireless communication module in the check system in slave mode
Before being sent to the check system in host mode, the check system in slave mode is by data acquisition module to institute
The data for stating the mutual inductor of acquisition are pre-processed, and the data for meeting preset format standard are obtained；
When the checking system in host mode is carried out by the data to received data and the machine acquisition
Before mark alignment, the check system in host mode pass through data acquisition module to the data of the mutual inductor of the acquisition into
Row pretreatment, obtains the data for meeting preset format standard.
Further, received satellite information is sent to host computer by serial communication interface with standard NMEA agreement；
The host computer calculates satellite connection quantity and judges time service pulse per second (PPS) synchronization signal accuracy, when host computer judges
The synchronization signal is not up to the standard of preset accuracy, then feedback synchronization exception information.
The invention has the benefit that technical solution of the present invention, gives a kind of direct current mutual inductance based on GPRS communication
Device is wireless calibration equipment and method of calibration, the calibration equipment and method of calibration are using mature GPRS wireless communication technique, benefit
With the wireless synchronization mode of GPS and/or Beidou high-precision satellite time transfer, the nothing of the remote stringent synchronization of direct current instrument transformer is realized
Line calibration, solves direct current instrument transformer field calibration middle and long distance wiring difficulty and analog signals transmit bring electricity at a distance
Crushing consumes problem, and wireless transmission distance is remote, does not need additional network relay equipment, is the live accurate calibration of direct current instrument transformer
Provide effective technological means.
Detailed description of the invention
By reference to the following drawings, exemplary embodiments of the present invention can be more fully understood by:
Fig. 1 is a kind of knot of wireless calibration equipment of direct current instrument transformer based on GPRS communication of the specific embodiment of the invention
Composition；
Fig. 2 is a kind of stream of wireless method of inspection of direct current instrument transformer based on GPRS communication of the specific embodiment of the invention
Cheng Tu.
Specific embodiment
Exemplary embodiments of the present invention are introduced referring now to the drawings, however, the present invention can use many different shapes
Formula is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be at large and fully disclose
The present invention, and the scope of the present invention is sufficiently conveyed to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attached
Icon note.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
Fig. 1 is a kind of knot of wireless calibration equipment of direct current instrument transformer based on GPRS communication of the specific embodiment of the invention
Composition；As shown in Figure 1, described device includes multiple check systems, the multiple check system each, can use two
Kind mode, host mode and slave mode, are directed to each mode, the specific works side of the check system modules
Formula has differences.
When actually progress direct current instrument transformer wirelessly verifies, the check system and one for being in host mode is at least needed
A check system in slave mode, when the measurement acquisition module of the check system is connected with direct current instrument transformer to be measured,
The check system is in slave mode, when the measurement acquisition module of the check system is connected with standard direct current instrument transformer,
The check system is in host mode.
Further, the check system of the host mode at least has one, by be compared as standard and based on
Calculate check results；Check system in slave mode can be one or more, according to the direct current instrument transformer to be measured that need to be verified
Quantity determines；Namely when carrying out direct current instrument transformer and wirelessly verifying, can be a host mode check system and one from
Machine modulo check system in combination realizes the verification to a direct current instrument transformer to be measured；It is also possible to a host mode check system
The verification to multiple direct current instrument transformers to be measured is realized with the combination of multiple slave mode check systems.
Further, each of the multiple check system, comprising: (for sake of clarity, only to place in respective figure
In the label that the check system of host mode carries out)
GPRS wireless communication module 110, the GPRS wireless communication module 110 are used to carry out with other check systems wireless
Communication；The GPRS wireless communication module 110 is used to receive the data of other check systems, and received data are sent to number
According to processing module；The GPRS wireless communication module 110 is used to the pretreated data of data processing module being sent to other
Check system；
Further, the GPRS wireless communication module 110 includes processing submodule, GPRS submodule and serial communication
Submodule；
The processing submodule is used to add time scale information for data, and the data for being added to time scale information are sent to string
Port communications submodule and GPRS submodule；The data include pretreated data and received data；
The serial communication submodule is for realizing the number between the GPRS wireless communication module 110 and data processing module
According to sending and receiving；
The GPRS submodule is used to carry out wireless communication with the GPRS submodule of other check systems.
Further, the processing submodule is the high-performance embedded processor of ARM7.
Further, the GPRS submodule is used to realize wireless transmission and the reception of data by SIM mobile phone card, described
GPRS submodule with the Cloud Server with fixed ip address for being communicated；The GPRS wireless communication module 110 is supported
2G, 3G and 4G radio band.
GPRS module by SIM mobile phone card realize data wireless transmission and reception and with the cloud with fixed ip address
Server is communicated.Two GPRS wireless communication modules 110 can realize " point-to-point " nothing by communicating with Cloud Server
The two-way transparent data transfer of line.
Wireless synchronization module 120, the wireless synchronization module 120 are used to receive the high-precision for communicating and obtaining with satellite system
Satellite time transfer synchronization signal, and the synchronization signal is sent to measurement acquisition module；The satellite system includes GPS satellite system
System and Beidou satellite system；
The wireless synchronization module includes GPS wireless synchronization submodule and Beidou wireless synchronization submodule, and the GPS is wireless
Synchronous submodule with GPS satellite system for communicating；The Beidou wireless synchronization submodule with Beidou satellite system for communicating；
In one group of verification, the check system in host mode and the check system in slave mode are connect
The high-precision satellite time transfer synchronization signal of receipts comes from the same satellite system, i.e. GPS satellite system or Beidou satellite system, passes through
The high-precision satellite time transfer of unified satellite system realizes the accuracy of time synchronization；
Further, the wireless synchronization module 120 leads to received satellite information with standard NMEA agreement by serial ports
Letter interface is sent to host computer；
The host computer calculates satellite connection quantity and judges time service pulse per second (PPS) synchronization signal accuracy, when host computer judges
The synchronization signal is not up to the standard of preset accuracy, then to the 120 feedback synchronization exception information of wireless synchronization module.
Acquisition module 130 is measured, the measurement acquisition module 130 is used for according to synchronization signal trigger data acquisition；It is described
The acquisition input terminal of measurement acquisition module 130 is connected with direct current instrument transformer, for acquiring the data of direct current instrument transformer；The measurement
Acquisition module 130 is used to the collected data being sent to data processing module；
Further, the measurement acquisition module 130 include high-precision A D Acquisition Circuit submodule；The high-precision A D
Acquisition Circuit submodule is used to acquire the output signal of direct current instrument transformer；The measurement acquisition module 130 is touched including external sync
Send out interface and analog measurement interface, one end of the analog measurement interface and high-precision A D Acquisition Circuit submodule
Input terminal is connected, and the other end is connected with direct current instrument transformer output end to be measured；External sync triggering interface be used for it is wireless same
Module 120 is walked to be connected.
Data processing module 140, the data processing module 140 be used for measurement acquisition module 130 acquire data into
Row pretreatment, obtains the data for meeting preset format standard；The data processing module 140 be used for pretreated data with
And the received data of GPRS wireless communication module 110 carry out markers alignment, and carry out contrast conting, obtain direct current instrument transformer to be measured
Check results.
When the measurement acquisition module 130 of the check system is connected with direct current instrument transformer to be measured, at the check system
In slave mode, the GPRS wireless communication module 110 is used to pretreated data being sent to corresponding host mode
In check system；
When the measurement acquisition module 130 of the check system is connected with standard direct current instrument transformer, at the check system
In host mode, the GPRS wireless communication module 110 is used to receive the data for the check system that other are in slave mode, and
Calculate the check results of the corresponding direct current instrument transformer to be measured of data of slave mode.
Data processing module 140 can be host or slave operating mode by software configuration, under slave mode, check system
Major function is to count the output signal for the tested direct current instrument transformer that measurement module acquires in each pulse per second (PPS) triggering moment
The check system under host mode, slave are sent to by GPRS wireless communication module 110 according to processing, and by processing data
Data processing module 140 under mode can be realized continual data processing per second and sending function, will measure mould in real time
The sampling data transmitting of block is sent to host correction verification module.Under host work mode, check system major function is in each second arteries and veins
Rush the standard direct current instrument transformer output signal that triggering moment acquires middle measurement module and carry out data processing, and will processing data with
The received tested direct current instrument transformer data of GPRS wireless communication module 110 carry out verification calculating, obtain tested direct current instrument transformer
Error.Data processing module 140 by serial communication mode and GPRS wireless communication module 110 and wireless synchronization module 120 into
Row data communication and control.
Fig. 2 is a kind of stream of wireless method of inspection of direct current instrument transformer based on GPRS communication of the specific embodiment of the invention
Cheng Tu.As shown in Figure 2, which comprises
Step 210, the check system in host mode is connect with standard direct current instrument transformer, slave mode will be in
Check system is connect with direct current instrument transformer to be measured；
Step 220, multiple check systems correspond to direct current instrument transformer according to high-precision satellite time transfer synchronization signal, synchronous acquisition
Data；The high-precision satellite time transfer synchronization signal includes that GPS is defended according to acquisition, the satellite system is communicated with satellite system
Star system and Beidou satellite system；
Step 230, the check system in slave mode sends out the data of acquisition by GPRS wireless communication module
Give the check system in host mode；
Step 240, the checking system in host mode passes through the data to received data and the machine acquisition
Markers alignment is carried out, and carries out contrast conting, obtains the check results of direct current instrument transformer to be measured.
Further, the data of acquisition are passed through into GPRS wireless communication module in the check system in slave mode
Before being sent to the check system in host mode, the check system in slave mode is by data acquisition module to institute
The data for stating the mutual inductor of acquisition are pre-processed, and the data for meeting preset format standard are obtained；
When the checking system in host mode is carried out by the data to received data and the machine acquisition
Before mark alignment, the check system in host mode pass through data acquisition module to the data of the mutual inductor of the acquisition into
Row pretreatment, obtains the data for meeting preset format standard.
Further, received satellite information is sent to host computer by serial communication interface with standard NMEA agreement；
The host computer calculates satellite connection quantity and judges time service pulse per second (PPS) synchronization signal accuracy, when host computer judges
The synchronization signal is not up to the standard of preset accuracy, then feedback synchronization exception information.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that the implementation of the disclosure
Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
Those skilled in the art will understand that can be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more devices different from this embodiment.It can be the module or list in embodiment
Member or component are combined into a module or unit or component, and furthermore they can be divided into multiple submodule or subelement or
Sub-component.Other than such feature and/or at least some of process or unit exclude each other, it can use any
Combination is to all features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed
All process or units of what method or apparatus are combined.Unless expressly stated otherwise, this specification is (including adjoint power
Benefit require, abstract and attached drawing) disclosed in each feature can carry out generation with an alternative feature that provides the same, equivalent, or similar purpose
It replaces.The step of being related in this specification, which numbers, is only used for distinguishing each step, and the time being not limited between each step
Or the relationship of logic, restriction unless the context clearly, otherwise the relationship between each step includes the case where various possible.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments means to be in the disclosure
Within the scope of and form different embodiments.For example, embodiment claimed in detail in the claims is one of any
Can in any combination mode come using.
The various component embodiments of the disclosure can be implemented in hardware, or to run on one or more processors
Software module realize, or be implemented in a combination thereof.The disclosure is also implemented as executing side as described herein
The some or all equipment or system program (for example, computer program and computer program product) of method.It is such
It realizes that the program of the disclosure can store on a computer-readable medium, or can have the shape of one or more signal
Formula.Such signal can be downloaded from an internet website to obtain, and perhaps be provided on the carrier signal or with any other shape
Formula provides.
The disclosure is limited it should be noted that above-described embodiment illustrates rather than the disclosure, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.Word "comprising" is not arranged
Except there are element or steps not listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of more
A such element.The disclosure can be by means of including the hardware of several different elements and by means of properly programmed calculating
Machine is realized.If several in these systems can be by same in the unit claim for listing dry systems
Hardware branch embodies.
The above is only the specific embodiment of the disclosure, it is noted that for the ordinary skill people of this field
Member for, do not depart from the disclosure spirit under the premise of, can make several improvements, modify and deform, these improve, modification,
It is regarded as falling within the scope of protection of this application with deformation.
Claims (11)
1. a kind of wireless calibration equipment of direct current instrument transformer based on GPRS communication, described device includes multiple check systems, described
Each of multiple check systems, comprising:
GPRS wireless communication module, the GPRS wireless communication module with other check systems for carrying out wireless communication；It is described
GPRS wireless communication module is used to receive the data of other check systems, and received data are sent to data processing module；
The GPRS wireless communication module is used to the pretreated data of data processing module being sent to other check systems；
Wireless synchronization module, the wireless synchronization module are used to receive the high-precision satellite time transfer for communicating and obtaining with satellite system same
Signal is walked, and the synchronization signal is sent to measurement acquisition module；The satellite system includes GPS satellite system and Beidou
Satellite system；
Acquisition module is measured, the measurement acquisition module is used for according to synchronization signal trigger data acquisition；The measurement acquires mould
The acquisition input terminal of block is connected with direct current instrument transformer, for acquiring the data of direct current instrument transformer；The measurement acquisition module is used for
The collected data are sent to data processing module；
Data processing module, the data processing module are used to pre-process the data of measurement acquisition module acquisition, obtain
Meet the data of preset format standard；The data processing module is used for pretreated data and GPRS radio communication mold
The received data of block carry out markers alignment, and carry out contrast conting, obtain the check results of direct current instrument transformer to be measured.
2. the apparatus according to claim 1, it is characterised in that: each of the multiple check system is with host mode
With two kinds of operational modes of slave mode；
When the measurement acquisition module of the check system is connected with direct current instrument transformer to be measured, the check system is in slave mould
Formula, pretreated data for being sent in the check system of corresponding host mode by the GPRS wireless communication module；
When the measurement acquisition module of the check system is connected with standard direct current instrument transformer, the check system is in host mould
Formula, the GPRS wireless communication module are used to receive the data for the check system that other are in slave mode, and calculate slave mould
The check results of the corresponding direct current instrument transformer to be measured of the data of formula.
3. the apparatus according to claim 1, which is characterized in that described device further includes host computer；
Received satellite information is sent to standard NMEA agreement by serial communication interface upper by the wireless synchronization module
Machine；
The host computer calculates satellite connection quantity and judges time service pulse per second (PPS) synchronization signal accuracy, described in host computer judgement
Synchronization signal is not up to the standard of preset accuracy, then to the wireless synchronization module feedback synchronous abnormality information.
4. the apparatus according to claim 1, it is characterised in that: the GPRS wireless communication module include processing submodule,
GPRS submodule and serial communication submodule；
The processing submodule is used to add time scale information for data, and the data for being added to time scale information are sent to serial ports and are led to
Believe submodule and GPRS submodule；The data include pretreated data and received data；
The serial communication submodule sends for realizing the data between the GPRS wireless communication module and data processing module
With reception；
The GPRS submodule is used to carry out wireless communication with the GPRS submodule of other check systems.
5. device according to claim 4, it is characterised in that: the processing submodule is the high-performance embedded processing of ARM7
Device.
6. device according to claim 4, it is characterised in that: the GPRS submodule by SIM mobile phone card for being realized
The wireless transmission of data and reception, the GPRS submodule with the Cloud Server with fixed ip address for being communicated；Institute
It states GPRS wireless communication module and supports 2G, 3G and 4G radio band.
7. the apparatus according to claim 1, it is characterised in that: the measurement acquisition module include high-precision A D acquisition electricity
Way module；The high-precision A D Acquisition Circuit submodule be used to acquire the output signal of direct current instrument transformer；The measurement acquisition
Module includes external sync triggering interface and analog measurement interface, one end of the analog measurement interface and high-precision A
The input terminal of D Acquisition Circuit submodule is connected, and the other end is connected with direct current instrument transformer output end to be measured；The external sync triggering
Interface with wireless synchronization module for being connected.
8. the apparatus according to claim 1, it is characterised in that: the wireless synchronization module includes GPS wireless synchronization submodule
Block and Beidou wireless synchronization submodule, the GPS wireless synchronization submodule with GPS satellite system for communicating；The Beidou without
Line locking submodule with Beidou satellite system for communicating；The check system of the host mode and school in slave mode
The received high-precision satellite time transfer synchronization signal of check system institute comes from the same satellite system.
9. a kind of wireless method of calibration of direct current instrument transformer based on GPRS communication, which comprises
To connect in the check system of host mode with standard direct current instrument transformer, by be in slave mode check system and to
Survey direct current instrument transformer connection；
Multiple check systems correspond to the data of direct current instrument transformer according to high-precision satellite time transfer synchronization signal, synchronous acquisition；It is described
High-precision satellite time transfer synchronization signal according to communicating acquisition with satellite system, the satellite system include GPS satellite system and
Beidou satellite system；
The data of acquisition are sent to by GPRS wireless communication module in host by the check system in slave mode
The check system of mode；
The checking system in host mode carries out markers alignment by the data to received data and the machine acquisition,
And contrast conting is carried out, obtain the check results of direct current instrument transformer to be measured.
10. according to the method described in claim 9, it is characterized by: will be acquired in the check system in slave mode
Data the check system in host mode is sent to by GPRS wireless communication module before, the school in slave mode
Check system is pre-processed by data of the data acquisition module to the mutual inductor of the acquisition, and acquisition meets preset format standard
Data；
Markers pair is carried out by the data to received data and the machine acquisition in the checking system in host mode
Qi Qian, the check system in host mode are carried out pre- by data of the data acquisition module to the mutual inductor of the acquisition
Processing obtains the data for meeting preset format standard.
11. according to the method described in claim 9, it is characterized by: received satellite information is passed through with standard NMEA agreement
Serial communication interface is sent to host computer；
The host computer calculates satellite connection quantity and judges time service pulse per second (PPS) synchronization signal accuracy, described in host computer judgement
Synchronization signal is not up to the standard of preset accuracy, then feedback synchronization exception information.
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| CN110580749A (en) * | 2019-10-10 | 2019-12-17 | 张育腾 | Timing and pigeonry management equipment for carrier pigeon competition |
| CN110958071A (en) * | 2019-10-30 | 2020-04-03 | 中国电力科学研究院有限公司 | Electronic transformer clock error self-calibration system and method based on 4G module |
| CN111175684A (en) * | 2019-12-24 | 2020-05-19 | 国网江苏省电力有限公司电力科学研究院 | Extra-high voltage direct current transformer calibration device, system and method |
| CN112526434A (en) * | 2020-10-26 | 2021-03-19 | 国网新疆电力有限公司电力科学研究院 | On-site wireless calibration device and method for direct current transformer |
| CN117008036A (en) * | 2023-08-08 | 2023-11-07 | 河北大学 | Remote self-calibration device for voltage sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110580749A (en) * | 2019-10-10 | 2019-12-17 | 张育腾 | Timing and pigeonry management equipment for carrier pigeon competition |
| CN110958071A (en) * | 2019-10-30 | 2020-04-03 | 中国电力科学研究院有限公司 | Electronic transformer clock error self-calibration system and method based on 4G module |
| CN110958071B (en) * | 2019-10-30 | 2023-03-24 | 中国电力科学研究院有限公司 | Electronic transformer clock error self-calibration system and method based on 4G module |
| CN111175684A (en) * | 2019-12-24 | 2020-05-19 | 国网江苏省电力有限公司电力科学研究院 | Extra-high voltage direct current transformer calibration device, system and method |
| CN112526434A (en) * | 2020-10-26 | 2021-03-19 | 国网新疆电力有限公司电力科学研究院 | On-site wireless calibration device and method for direct current transformer |
| CN117008036A (en) * | 2023-08-08 | 2023-11-07 | 河北大学 | Remote self-calibration device for voltage sensor |
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