CN106680756A - Testing method, system and device for accuracy grade of direct-current voltage transformer - Google Patents
Testing method, system and device for accuracy grade of direct-current voltage transformer Download PDFInfo
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- CN106680756A CN106680756A CN201710008455.1A CN201710008455A CN106680756A CN 106680756 A CN106680756 A CN 106680756A CN 201710008455 A CN201710008455 A CN 201710008455A CN 106680756 A CN106680756 A CN 106680756A
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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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Abstract
The embodiment of the invention discloses a testing method, system and device for the accuracy grade of a direct-current voltage transformer. The testing method includes the steps that satellite positioning information is obtained through a main testing machine, and is treated, and synchronization pulse signals are obtained; according to the synchronization pulse signals, standard voltage signals output by a standard direct-current voltage transformer are collected, actual voltage signals output by a test direct-current voltage transformer are obtained, collected by an auxiliary testing machine and sent to a main testing machine in a wireless transmission mode, and the collecting process of the main testing machine and the testing process of the auxiliary testing machine are synchronous; errors between the standard voltage signals and the actual voltage signals are calculated, and according to the errors, the accuracy grade of the test direct-current voltage transformer is test. By means of the testing method, system and device for the accuracy grade of the direct-current voltage transformer, the problem that in a direct-current converter station, as the separation distance between the secondary side of the test direct-current voltage transformer and the secondary side of the standard direct-current voltage transformer is far, the accuracy grade of the direct-current voltage transformer is inconveniently test is solved.
Description
Technical field
The application is related to DC voltage transformer degree of accuracy technical field of measurement and test, more particularly to a kind of DC voltage transformer
Class of accuracy method of testing, system and device.
Background technology
In order to be controlled to DC transmission system and be protected, it is ensured that DC transmission system safe and stable operation is, it is necessary to right
Measured including some amount including DC voltage.At present, generally by the DC voltage transformer in DC transmission system
To measure the voltage of DC transmission system.It is mutual to DC voltage in order to ensure the accuracy of DC voltage transformer measurement result
The degree of accuracy of sensor carries out test becomes particularly important.
In existing DC voltage transformer class of accuracy method of testing, the commonly provided standard DC voltage transformer,
Tester is accessed in the secondary side of tested DC voltage transformer and standard DC voltage transformer, is tested by high voltage power supply
The primary side of DC voltage transformer and standard DC voltage transformer provides voltage, by tested DC voltage transformer secondary side
Actual voltage signal, and standard direct current voltage transformer secondary side standard voltage signal input validation instrument, by tester survey
The error gone out between standard voltage signal and actual voltage signal, so as to the standard according to the tested DC voltage transformer of error analysis
Exactness grade.
In DC converter station, tested DC voltage transformer is arranged on DC fields, it will usually by optical fiber or secondary
Loop transfer to protection control room.In testing at the scene, standard DC voltage transformer is generally also disposed at DC fields, and and quilt
A side position for surveying DC voltage transformer is close, but, because the secondary side for being tested DC voltage transformer is controlled in protection
Room processed, apart from DC fields farther out, if by the two of the secondary side of tested DC voltage transformer and standard DC voltage transformer
Secondary side together accesses tester, it is necessary to using optical fiber more long, wiring is relatively complicated, not easy to operate in testing at the scene, therefore,
Existing DC voltage transformer class of accuracy method of testing is not suitable for the DC voltage transformer in DC converter station
Class of accuracy tested.
The content of the invention
It is existing to solve this application provides a kind of DC voltage transformer class of accuracy method of testing, system and device
Some DC voltage transformer class of accuracy method of testings are not suitable for the DC voltage transformer in DC converter station
The problem that class of accuracy is tested.
In a first aspect, this application provides DC voltage transformer class of accuracy method of testing, the method includes：Test
Main frame obtains satellite positioning information, and the satellite positioning information is processed, and obtains synchronization pulse；
Test main frame is according to the synchronization pulse, the normal voltage letter of collection standard DC voltage transformer output
Number, the actual voltage signal of tested DC voltage transformer output is obtained, wherein, the actual voltage signal is adopted by test slave
Collection is obtained, and is sent to the test main frame by wireless transmission method, the collection of the test slave and the test main frame
Process synchronization；
Test main frame calculates the error between the standard voltage signal and the actual voltage signal, according to the mistake
Difference, obtains the class of accuracy of the tested DC voltage transformer.
With reference in a first aspect, in first aspect in the first possible implementation, the test main frame is according to described same
Step pulse signal, the standard voltage signal of collection standard DC voltage transformer output, including：
Test main frame gathers the master die of standard DC voltage transformer output under the triggering of the synchronization pulse
Analog quantity voltage signal；
The master die analog quantity voltage signal is carried out wavelet transformation decomposition by test main frame, obtains the master die of peak low band
Analog quantity voltage signal；
The master die analog quantity voltage signal of the peak low band is converted to standard digital amount voltage signal by test main frame；
Test main frame has carried out limit for length's unit impulse response bandpass filtering treatment to the standard digital amount voltage signal, obtains
To the standard voltage signal.
Second aspect, this application provides another DC voltage transformer class of accuracy method of testing, the method bag
Include：
Test slave obtains satellite positioning information, and the satellite positioning information is processed, and obtains synchronization pulse；
Test slave according to the synchronization pulse, believe by the virtual voltage of the tested DC voltage transformer output of collection
Number, by wireless transmission method, the actual voltage signal is sent to test main frame, so that test main frame calculates normal voltage
Error between signal and the actual voltage signal, according to the error, obtains the standard of the tested DC voltage transformer
Exactness grade, wherein, the standard voltage signal is collected by test main frame, the test main frame and the test slave
Gatherer process synchronization.
With reference to second aspect, in second aspect in the first possible implementation, the test slave is according to described same
Step pulse signal, the actual voltage signal of the tested DC voltage transformer output of collection, including：
Under the triggering of the synchronization pulse, collection is tested the actual mould of DC voltage transformer output to test slave
Analog quantity voltage signal；
The realistic simulation amount voltage signal is carried out wavelet transformation decomposition by test slave, obtains the actual mould of peak low band
Analog quantity voltage signal；
The realistic simulation amount voltage signal of the peak low band is converted into real figure amount voltage signal by test slave；
Test slave has carried out limit for length's unit impulse response bandpass filtering treatment to the real figure amount voltage signal, obtains
To the actual voltage signal.
With reference to second aspect, in second possible implementation of second aspect, the test slave is according to described same
Step pulse signal, the actual voltage signal of the tested DC voltage transformer output of collection, including：
Under the triggering of the synchronization pulse, collection is tested the actual number of DC voltage transformer output to test slave
Word amount voltage signal；
Test slave has carried out limit for length's unit impulse response bandpass filtering treatment to the real figure amount voltage signal, obtains
To the actual voltage signal.
The third aspect, this application provides a kind of DC voltage transformer class of accuracy test system, it is characterised in that
Including：DC voltage power supply, standard DC voltage transformer, test main frame and test slave, the DC voltage power supply difference
With the standard DC voltage transformer, and tested DC voltage transformer primary side connection, the test main frame and institute
State the secondary side connection of standard DC voltage transformer, the secondary side for testing slave and the tested DC voltage transformer
Connection；
The DC voltage power supply, for being the standard DC voltage transformer and the tested DC voltage transformer
Primary voltage is provided；
The standard DC voltage transformer, for outputting standard voltage signal；
The test main frame, for obtaining satellite positioning information, is processed the satellite positioning information, obtains synchronization
Pulse signal；According to the synchronization pulse, the standard voltage signal of collection standard DC voltage transformer output obtains quilt
Survey the actual voltage signal of DC voltage transformer output；Calculate between the standard voltage signal and the actual voltage signal
Error；According to the error, the class of accuracy of the tested DC voltage transformer is obtained；
The test slave, for obtaining satellite positioning information, is processed the satellite positioning information, obtains synchronization
Pulse signal；According to the synchronization pulse, the actual voltage signal of the tested DC voltage transformer output of collection；By nothing
Line transmission means, the actual voltage signal is sent to test main frame, wherein, the test main frame and the test slave
Gatherer process synchronization.
Fourth aspect, this application provides a kind of DC voltage transformer class of accuracy test device, for performing the
On the one hand the DC voltage transformer class of accuracy method of testing for providing, the device includes：
Main frame satellite synchronization unit, for obtaining satellite positioning information, is processed the satellite positioning information, is obtained
Synchronization pulse；
Normal voltage collecting unit, for according to the synchronization pulse, the DC voltage transformer output of collection standard
Standard voltage signal；
Wireless data receiving unit, the actual voltage signal for obtaining tested DC voltage transformer output；
Test analysis unit, for calculating the error between the standard voltage signal and the actual voltage signal, root
According to the error, the class of accuracy of the tested DC voltage transformer is obtained.
5th aspect, this application provides another DC voltage transformer class of accuracy test device, for performing
The DC voltage transformer class of accuracy method of testing that second aspect is provided, the device includes：
Slave satellite synchronization unit, for obtaining satellite positioning information, is processed the satellite positioning information, is obtained
Synchronization pulse；
Virtual voltage collecting unit, for according to the synchronization pulse, the tested DC voltage transformer of collection to be exported
Actual voltage signal；
Wireless data transmission unit, for the actual voltage signal to be sent to test main frame, so that test main frame meter
The error between standard voltage signal and the actual voltage signal is calculated, according to the error, the tested DC voltage is obtained
The class of accuracy of transformer.
From above technical scheme, the embodiment of the present invention provides a kind of DC voltage transformer class of accuracy test side
Method, system and device, in the method, test main frame obtains satellite positioning information, and satellite positioning information is processed, and obtains same
Step pulse signal；The standard voltage signal that test main frame is exported according to synchronization pulse, collection standard DC voltage transformer,
The actual voltage signal of tested DC voltage transformer output is obtained, wherein, actual voltage signal is collected by test slave,
And sent to test main frame by wireless transmission method, test slave is synchronous with the gatherer process of test main frame；Test main frame meter
The error between standard voltage signal and actual voltage signal is calculated, according to error, the accurate of tested DC voltage transformer is obtained
Degree grade；The application is based on wireless communication technology, and the actual voltage signal that tested DC voltage transformer is exported is by wireless
Transmission means, sends to test main frame, effectively solves in DC converter station, due to being tested the secondary side of DC voltage transformer
In protection control room, apart from DC fields farther out, if the secondary side of tested DC voltage transformer and standard DC voltage is mutual
The secondary side of sensor together accesses tester, it is necessary to using optical fiber more long, wiring is relatively complicated, and behaviour is difficult in testing at the scene
The problem of work, it is adaptable in DC converter station, the class of accuracy to DC voltage transformer is tested.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the application, letter will be made to the accompanying drawing to be used needed for embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other accompanying drawings can also be obtained according to these accompanying drawings.
The schematic diagram of the DC voltage transformer class of accuracy test system that Fig. 1 is provided for the embodiment of the present application；
A kind of flow chart of DC voltage transformer class of accuracy method of testing that Fig. 2 is provided for the embodiment of the present application；
The normal voltage letter of the test main frame collection standard DC voltage transformer output that Fig. 3 is provided for the embodiment of the present application
The flow chart of number method；
The flow of another DC voltage transformer class of accuracy method of testing that Fig. 4 is provided for the embodiment of the present application
Figure；
The virtual voltage letter of the tested DC voltage transformer output of test slave collection that Fig. 5 is provided for the embodiment of the present application
The flow chart of number method；
The virtual voltage letter of the tested DC voltage transformer output of test slave collection that Fig. 6 is provided for the embodiment of the present application
The flow chart of number another method；
A kind of structural frames of the DC voltage transformer class of accuracy test device that Fig. 7 is provided for the embodiment of the present application
Figure；
Another structural frames of the DC voltage transformer class of accuracy test device that Fig. 8 is provided for the embodiment of the present application
Figure.
Illustrate：1- DC voltage power supplies；2- standard DC voltage transformers；3- test main frames；4- tests slave；5-
Tested DC voltage transformer；31- normal voltage collecting units；32- main frame satellite synchronization units；33- wireless datas receive single
Unit；34- test analysis units；41- virtual voltage collecting units；42- slave satellite synchronization units；43- wireless datas send single
Unit.
Specific embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in implementation method do not represent all implementation methods consistent with the disclosure.Conversely, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects described in detail in claims, the disclosure.
At present, in DC converter station, because standard DC voltage transformer is arranged on DC fields, and with tested direct current
Press transformer a side position it is close, be tested DC voltage transformer secondary side protection control room, apart from DC fields compared with
Far, if the secondary side of the secondary side of tested DC voltage transformer and standard DC voltage transformer is together accessed into verification
Instrument is not easy to operate in testing at the scene, it is necessary to using optical fiber more long, wiring is relatively complicated, in this regard, the embodiment of the present invention is provided
A kind of DC voltage transformer class of accuracy method of testing, system and device, it is adaptable to the direct current in DC converter station
The class of accuracy of transformer is pressed to be tested.
Fig. 1 is referred to, is a kind of DC voltage transformer class of accuracy test system shown in the embodiment of the present invention
Structural representation, using the DC voltage transformer class of accuracy test system, can be to DC converter station in, be tested direct current
The class of accuracy of transformer is pressed to be tested.
The DC voltage transformer class of accuracy test system includes：DC voltage power supply 1, standard direct current mutual induction of voltage
Device 2, test main frame 3 and test slave 4, DC voltage power supply 1 respectively with standard DC voltage transformer 2, and tested direct current
The primary side connection of voltage transformer 5, the machine of test main frame 3 is connected with the secondary side of standard DC voltage transformer 2, tests slave
4 are connected with the secondary side of tested DC voltage transformer 5.
DC voltage power supply 1 selects stability power supply higher as needed, to ensure that test main frame 3 is believed normal voltage
Number and test slave 4 to the acquisition precision of actual voltage signal, lifting is to the test of DC voltage transformer class of accuracy
Accuracy.
Standard DC voltage transformer can be the transformer of analog output type, and tested DC voltage transformer can be
The transformer of analog output type, it is also possible to make the transformer of digital output type.In the present embodiment, standard DC voltage is mutual
Sensor class of accuracy is 0.05 grade, and rated voltage is ± 500kV.
Test slave 4 is provided with analog quantity interface and digital quantity interface, can meet the voltage transformer of different output types
Test.
Operationally, DC voltage power supply 1 gives standard DC voltage transformer 2 and tested DC voltage transformer to the system
5 provide primary voltage.The outputting standard voltage signal of standard DC voltage transformer 2, so that standard voltage signal is straight with tested
The actual voltage signal of the stream output of voltage transformer 5 is contrasted；Test main frame 3 obtains satellite positioning information, to satellite fix
Information is processed, and obtains synchronization pulse；According to synchronization pulse, the output of collection standard DC voltage transformer 2
Standard voltage signal, obtains the actual voltage signal of the tested output of DC voltage transformer 5；Calculate standard voltage signal and reality
Error between voltage signal；According to error, the class of accuracy of the tested DC voltage transformer 5 of test.Test slave 4 is used for
Satellite positioning information is obtained, satellite positioning information is processed, obtain synchronization pulse；According to synchronization pulse, adopt
The actual voltage signal of the tested output of DC voltage transformer 5 of collection；By wireless transmission method, by actual voltage signal send to
Test main frame 3, wherein, test main frame 3 is synchronous with the gatherer process of test slave 4.
The DC voltage transformer class of accuracy test system that the present embodiment is provided, based on wireless communication technology, will be by
The actual voltage signal of DC voltage transformer output is surveyed by wireless transmission method, is sent to test main frame, effectively solved
In DC converter station, due to being tested the secondary side of DC voltage transformer in protection control room, apart from DC fields farther out, if will
The secondary side of tested DC voltage transformer and the secondary side of standard DC voltage transformer together access tester, it is necessary to utilize
Optical fiber more long, wiring is relatively complicated, not easy-operating problem in testing at the scene, it is adaptable in DC converter station, to straight
The class of accuracy for flowing voltage transformer is tested.
Fig. 2 is referred to, is a kind of DC voltage transformer class of accuracy method of testing provided in an embodiment of the present invention
Flow chart, the method includes：
Step S11, test main frame obtain satellite positioning information, and satellite positioning information is processed, and obtain lock-out pulse
Signal.Test main frame can receive big-dipper satellite location information by big-dipper satellite antenna, and by test main frame inside high accuracy
Big-dipper satellite time service board is processed, and obtains synchronization pulse.
Step S12, test main frame are according to synchronization pulse, the normal voltage of collection standard DC voltage transformer output
Signal, obtains the actual voltage signal of tested DC voltage transformer output, wherein, actual voltage signal is gathered by test slave
Obtain, and sent to test main frame by wireless transmission method, test slave is synchronous with the gatherer process of test main frame.
Fig. 3 is referred to, the test main frame is according to the synchronization pulse, the DC voltage transformer output of collection standard
Standard voltage signal, it may include：
Step S121, test main frame are under the triggering of the synchronization pulse, and collection standard DC voltage transformer is defeated
The master die analog quantity voltage signal for going out.
The master die analog quantity voltage signal is carried out wavelet transformation decomposition by step S122, test main frame, obtains lowest frequency
The master die analog quantity voltage signal of section.The step is realized by electric pressure converter.
The master die analog quantity voltage signal of the peak low band is converted to standard digital amount electricity by step S123, test main frame
Pressure signal.The step is realized by analog-digital converter.
Step S124, test main frame have carried out the filter of limit for length's unit impulse response band logical to the standard digital amount voltage signal
Ripple treatment, obtains the standard voltage signal.
Wherein, the master die analog quantity voltage signal is carried out wavelet transformation decomposition by test main frame, obtains peak low band
Master die analog quantity voltage signal, high accuracy is converted to will pass through high-precision analog-digital converter by master die analog quantity voltage signal
Standard digital amount voltage signal.Analog-digital converter can be made up of the converter of several different sample frequencys, and with it is tested
The being consistent property of sample rate of DC voltage transformer, it is possible to achieve the collection under multiple sample frequencys.
Step S13, test main frame calculate the error between standard voltage signal and actual voltage signal, according to error, obtain
To the class of accuracy of tested DC voltage transformer.
Wherein, tested DC voltage mutual inductance can be drawn according to the class of accuracy standard of existing DC voltage transformer
The class of accuracy of device, for example, when the voltage measurement scope of tested DC voltage transformer is in 0.1p.u~1.0p.u, if mark
Error between quasi- voltage signal and the actual voltage signal is then tested the accuracy of DC voltage transformer 0.1%
Level is 0.1.If the error between standard voltage signal and the actual voltage signal is 0.2%, DC voltage mutual inductance is tested
The class of accuracy of device is 0.2.If the error between standard voltage signal and the actual voltage signal is tested 0.5%
The class of accuracy of DC voltage transformer is 0.5.If the error between standard voltage signal and the actual voltage signal exists
1%, then the class of accuracy for being tested DC voltage transformer is 1.0.
When the voltage measurement scope of tested DC voltage transformer is in 1.0p.u~1.5p.u, if standard voltage signal with
0.3%, then the class of accuracy for being tested DC voltage transformer is 0.1 to error between the actual voltage signal.If mark
Error between quasi- voltage signal and the actual voltage signal is then tested the accuracy of DC voltage transformer 0.5%
Level is 0.2.If the error between standard voltage signal and the actual voltage signal is 1%, DC voltage transformer is tested
Class of accuracy be 0.5.If the error between standard voltage signal and the actual voltage signal is 3%, 5% or 10%,
The class of accuracy for being then tested DC voltage transformer is 1.0.
The DC voltage transformer class of accuracy method of testing that the present embodiment is provided, using test main frame according to satellite
Position information obtains synchronization pulse, under the triggering of synchronization pulse, to the standard of standard DC voltage transformer output
Voltage signal, is acquired, and it is defeated that the tested DC voltage transformer of test slave transmission is received by way of being wirelessly transferred
The actual voltage signal for going out, so as to calculate the error between standard voltage signal and actual voltage signal using test main frame；
According to error, according to the class of accuracy standard of existing DC voltage transformer, the standard of the tested DC voltage transformer of test
Exactness grade, the method is based on wireless communication technology, and the actual voltage signal that tested DC voltage transformer is exported passes through nothing
Line transmission means, sends to test main frame, effectively solves in DC converter station, due to being tested the secondary of DC voltage transformer
Side in protection control room, apart from DC fields farther out, if by the secondary side of tested DC voltage transformer and standard DC voltage
The secondary side of transformer together accesses tester, it is necessary to using optical fiber more long, wiring is relatively complicated, is difficult in testing at the scene
The problem of operation, it is adaptable in DC converter station, the class of accuracy to DC voltage transformer is tested.
Fig. 4 is referred to, is another DC voltage transformer class of accuracy method of testing provided in an embodiment of the present invention
Flow chart, method includes：
Step S21, test slave obtain satellite positioning information, and the satellite positioning information is processed, and obtain synchronization
Pulse signal.In the present embodiment, test slave can receive big-dipper satellite location information by big-dipper satellite antenna, and by surveying
Examination slave inside high accuracy big-dipper satellite time service board is processed, and obtains synchronization pulse.
Step S22, test slave are tested the reality of DC voltage transformer output according to the synchronization pulse, collection
Voltage signal, by wireless transmission method, the actual voltage signal is sent to test main frame, so that test main frame calculates mark
Error between quasi- voltage signal and the actual voltage signal, according to the error, obtains the tested DC voltage mutual inductance
The class of accuracy of device, wherein, the standard voltage signal is collected by test main frame, the test main frame and the test
The gatherer process synchronization of slave.
Fig. 5 is referred to, if tested DC voltage transformer is the transformer of analog output type, the test slave root
According to the synchronization pulse, the actual voltage signal of the tested DC voltage transformer output of collection, including：
Under the triggering of the synchronization pulse, the tested DC voltage transformer of collection is exported for S221, test slave
Realistic simulation amount voltage signal.If the rated primary voltage of tested DC voltage transformer is Un, it is mutual that DC current is tested respectively
Sensor is in (0.1Un-1.2Un) in the range of arbitrfary point, or in these test points：0.1Un, 0.2Un, 0.5Un, 0.8Un, 1.0Un,
1.2UnThe realistic simulation amount voltage signal of output.
The realistic simulation amount voltage signal is carried out wavelet transformation decomposition by S222, test slave, obtains peak low band
Realistic simulation amount voltage signal.The step realized by electric pressure converter, can eliminate outside electromagnetic interference
The realistic simulation amount voltage signal of the peak low band is converted into real figure amount voltage letter by S223, test slave
Number.The step is realized by analog-digital converter.
S224, test slave have been carried out at limit for length's unit impulse response bandpass filtering to the real figure amount voltage signal
Reason, obtains the actual voltage signal.
Wherein, the processing procedure of the realistic simulation amount voltage signal that test slave is exported to tested DC voltage transformer,
Processing procedure with the master die analog quantity voltage signal that test main frame is exported to standard DC voltage transformer is similar.
Fig. 6 is referred to, if tested DC voltage transformer is the transformer of digital output type, the test slave root
According to the synchronization pulse, the actual voltage signal of the tested DC voltage transformer output of collection, including：
Under the triggering of the synchronization pulse, the tested DC voltage transformer of collection is exported for S225, test slave
Real figure amount voltage signal.
S226, test slave have been carried out at limit for length's unit impulse response bandpass filtering to the real figure amount voltage signal
Reason, obtains the actual voltage signal.
The DC voltage transformer class of accuracy method of testing that the present embodiment is provided, using test slave according to satellite
Position information obtains synchronization pulse, under the triggering of synchronization pulse, the reality to being tested DC voltage transformer output
Voltage signal is acquired, and test main frame is sent to by way of being wirelessly transferred, and is marked so as to be calculated using test main frame
Error between quasi- voltage signal and actual voltage signal；According to error, according to the degree of accuracy of existing DC voltage transformer
Classification standard, obtains the class of accuracy of tested DC voltage transformer, and the method is based on wireless communication technology, by tested direct current
The actual voltage signal of voltage transformer output is sent to test main frame by wireless transmission method, effectively solves to be changed in direct current
In stream station, due to being tested the secondary side of DC voltage transformer in protection control room, apart from DC fields farther out, if will be tested straight
The secondary side of the secondary side and standard DC voltage transformer that flow voltage transformer together accesses tester, it is necessary to using more long
Optical fiber, wiring is relatively complicated, not easy-operating problem in testing at the scene, it is adaptable in DC converter station, to DC voltage
The class of accuracy of transformer is tested.
Fig. 7 is referred to, a kind of DC voltage transformer class of accuracy test device provided in an embodiment of the present invention is used for
Above-mentioned DC voltage transformer class of accuracy method of testing is performed, the device includes：
Main frame satellite synchronization unit 31, for obtaining satellite positioning information, is processed the satellite positioning information, is obtained
To synchronization pulse.
Normal voltage collecting unit 32, for according to the synchronization pulse, collection standard DC voltage transformer to be defeated
The standard voltage signal for going out.
Wireless data receiving unit 33, the actual voltage signal for obtaining tested DC voltage transformer output.
Test analysis unit 34, for calculating the error between the standard voltage signal and the actual voltage signal,
According to the error, the class of accuracy of the tested DC voltage transformer is obtained.
Fig. 8 is referred to, is another DC voltage transformer class of accuracy test device provided in an embodiment of the present invention,
For performing above-mentioned another DC voltage transformer class of accuracy method of testing, the device includes：
Slave satellite synchronization unit 41, for obtaining satellite positioning information, is processed the satellite positioning information, is obtained
To synchronization pulse.
Virtual voltage collecting unit 42, for according to the synchronization pulse, the tested DC voltage transformer of collection to be defeated
The actual voltage signal for going out.
Wireless data transmission unit 43, for the actual voltage signal to be sent to test main frame, so that test main frame
The error between standard voltage signal and the actual voltage signal is calculated, according to the error, the tested direct current is obtained
Press the class of accuracy of transformer.
In implementing, the present invention also provides a kind of computer-readable storage medium, wherein, the computer-readable storage medium can be stored
There is program, the program may include DC voltage transformer each embodiment of class of accuracy method of testing of the present invention offer when performing
In part or all of step.Described storage medium can be magnetic disc, CD, read-only memory (English：read-only
Memory, referred to as：ROM) or random access memory (English：Random access memory, referred to as：RAM) etc..
It is required that those skilled in the art can be understood that the technology in the embodiment of the present invention can add by software
The mode of general hardware platform realize.Based on such understanding, the technical scheme in the embodiment of the present invention substantially or
Say that the part contributed to prior art can be embodied in the form of software product, the computer software product can be deposited
Storage in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are used to so that computer equipment (can be with
It is personal computer, server, or network equipment etc.) perform some part institutes of each embodiment of the invention or embodiment
The method stated.
In this specification between each embodiment identical similar part mutually referring to.Carried especially for the present invention
For the DC voltage transformer class of accuracy test device embodiment of confession, because it is substantially similar to embodiment of the method, institute
Fairly simple with what is described, related part is referring to the explanation in embodiment of the method.
Invention described above implementation method is not intended to limit the scope of the present invention..
Claims (8)
1. a kind of DC voltage transformer class of accuracy method of testing, it is characterised in that methods described includes：
Test main frame obtains satellite positioning information, and the satellite positioning information is processed, and obtains synchronization pulse；
Test main frame is obtained according to the synchronization pulse, the standard voltage signal of collection standard DC voltage transformer output
The actual voltage signal of tested DC voltage transformer output is taken, wherein, the actual voltage signal is gathered by test slave
Arrive, and sent to the test main frame by wireless transmission method, the gatherer process of the test slave and the test main frame
It is synchronous；
Test main frame calculates the error between the standard voltage signal and the actual voltage signal, according to the error, obtains
To the class of accuracy of the tested DC voltage transformer.
2. the method for claim 1, it is characterised in that the test main frame is according to the synchronization pulse, collection
The standard voltage signal of standard DC voltage transformer output, including：
Test main frame gathers the master die analog quantity of standard DC voltage transformer output under the triggering of the synchronization pulse
Voltage signal；
The master die analog quantity voltage signal is carried out wavelet transformation decomposition by test main frame, obtains the master die analog quantity of peak low band
Voltage signal；
The master die analog quantity voltage signal of the peak low band is converted to standard digital amount voltage signal by test main frame；
Test main frame has carried out limit for length's unit impulse response bandpass filtering treatment to the standard digital amount voltage signal, obtains institute
State standard voltage signal.
3. a kind of DC voltage transformer class of accuracy method of testing, it is characterised in that methods described includes：
Test slave obtains satellite positioning information, and the satellite positioning information is processed, and obtains synchronization pulse；
Test slave according to the synchronization pulse, lead to by the actual voltage signal of the tested DC voltage transformer output of collection
Wireless transmission method is crossed, the actual voltage signal is sent to test main frame, so that test main frame calculates standard voltage signal
With the error between the actual voltage signal, according to the error, the degree of accuracy of the tested DC voltage transformer is obtained
Grade, wherein, the standard voltage signal is collected by test main frame, the test main frame and it is described test slave collection
Process synchronization.
4. method as claimed in claim 3, it is characterised in that the test slave is according to the synchronization pulse, collection
The actual voltage signal of tested DC voltage transformer output, including：
Under the triggering of the synchronization pulse, collection is tested the realistic simulation amount of DC voltage transformer output to test slave
Voltage signal；
The realistic simulation amount voltage signal is carried out wavelet transformation decomposition by test slave, obtains the realistic simulation amount of peak low band
Voltage signal；
The realistic simulation amount voltage signal of the peak low band is converted into real figure amount voltage signal by test slave；
Test slave has carried out limit for length's unit impulse response bandpass filtering treatment to the real figure amount voltage signal, obtains institute
State actual voltage signal.
5. method as claimed in claim 3, it is characterised in that the test slave is according to the synchronization pulse, collection
The actual voltage signal of tested DC voltage transformer output, including：
Under the triggering of the synchronization pulse, collection is tested the real figure amount of DC voltage transformer output to test slave
Voltage signal；
Test slave has carried out limit for length's unit impulse response bandpass filtering treatment to the real figure amount voltage signal, obtains institute
State actual voltage signal.
6. a kind of DC voltage transformer class of accuracy test system, it is characterised in that including：DC voltage power supply, standard
DC voltage transformer, test main frame and test slave, the DC voltage power supply respectively with the standard direct current mutual induction of voltage
Device, and tested DC voltage transformer primary side connection, the test main frame and the standard DC voltage transformer
Secondary side is connected, and the test slave is connected with the secondary side of the tested DC voltage transformer；
The DC voltage power supply, for being that the standard DC voltage transformer and the tested DC voltage transformer are provided
Primary voltage；
The standard DC voltage transformer, for outputting standard voltage signal；
The test main frame, for obtaining satellite positioning information, is processed the satellite positioning information, obtains lock-out pulse
Signal；According to the synchronization pulse, the standard voltage signal of collection standard DC voltage transformer output obtains tested straight
The actual voltage signal of stream voltage transformer output；Calculate the mistake between the standard voltage signal and the actual voltage signal
Difference；According to the error, the class of accuracy of the tested DC voltage transformer is obtained；
The test slave, for obtaining satellite positioning information, is processed the satellite positioning information, obtains lock-out pulse
Signal；According to the synchronization pulse, the actual voltage signal of the tested DC voltage transformer output of collection；By wireless biography
Defeated mode, the actual voltage signal is sent to test main frame, wherein, the test main frame and it is described test slave collection
Process synchronization.
7. a kind of DC voltage transformer class of accuracy test device, it is characterised in that including：
Main frame satellite synchronization unit, for obtaining satellite positioning information, is processed the satellite positioning information, obtains synchronization
Pulse signal；
Normal voltage collecting unit, for according to the synchronization pulse, the mark of collection standard DC voltage transformer output
Quasi- voltage signal；
Wireless data receiving unit, the actual voltage signal for obtaining tested DC voltage transformer output；
Test analysis unit, for calculating the error between the standard voltage signal and the actual voltage signal, according to institute
Error is stated, the class of accuracy of the tested DC voltage transformer is obtained.
8. a kind of DC voltage transformer class of accuracy test device, it is characterised in that including：
Slave satellite synchronization unit, for obtaining satellite positioning information, is processed the satellite positioning information, obtains synchronization
Pulse signal；
Virtual voltage collecting unit, for according to the synchronization pulse, collection to be tested the reality of DC voltage transformer output
Border voltage signal；
Wireless data transmission unit, for the actual voltage signal to be sent to test main frame, so that test main frame calculates mark
Error between quasi- voltage signal and the actual voltage signal, according to the error, obtains the tested DC voltage mutual inductance
The class of accuracy of device.
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| CN201710008455.1A CN106680756A (en) | 2017-01-05 | 2017-01-05 | Testing method, system and device for accuracy grade of direct-current voltage transformer |
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| CN201710008455.1A CN106680756A (en) | 2017-01-05 | 2017-01-05 | Testing method, system and device for accuracy grade of direct-current voltage transformer |
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| CN112067031A (en) * | 2020-08-11 | 2020-12-11 | 华人运通(江苏)技术有限公司 | Gear signal checking method and device of automobile gear shifter, storage medium and system |
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