CN206331106U - A kind of instantaneous error test device for analog input formula combining unit - Google Patents
A kind of instantaneous error test device for analog input formula combining unit Download PDFInfo
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- CN206331106U CN206331106U CN201621181535.4U CN201621181535U CN206331106U CN 206331106 U CN206331106 U CN 206331106U CN 201621181535 U CN201621181535 U CN 201621181535U CN 206331106 U CN206331106 U CN 206331106U
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- 238000012360 testing method Methods 0.000 title claims abstract description 53
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Abstract
The utility model belongs to intelligent substation equipment verification technical field, there is provided a kind of instantaneous error test device for analog input formula combining unit, the instantaneous error test device includes embedded control system, synchronizing signal interface and light network interface, embedded control system sends default distorted wave under the synchronizing signal triggering that synchronizing signal interface is transmitted to analog input formula combining unit, and handle the sample waveform data exported by analog input formula combining unit of light network interface reception, the sample waveform data that the Wave data of above-mentioned default distorted wave and light network interface are received are contrasted, draw the instantaneous error of analog input formula combining unit.By the instantaneous error test device using built-in default distortional wave as standard signal, sample waveform data using the output of analog input formula combining unit is tested signals, can be with the transient state instantaneous error of test simulation amount input type combining unit, simple and easy to apply and measuring accuracy is high.
Description
Technical field
The utility model belongs to intelligent substation equipment verification technical field, more particularly to a kind of to be used for analog input formula
The instantaneous error test device of combining unit.
Background technology
Because electronic mutual inductor occurs in that variety of problems in intelligent substation actual motion, traditional transformer adds simulation
Measuring input type combining unit turns into the alternative solution that current intelligent substation is built, and therefore, analog input formula combining unit is
It is used widely in intelligent substation.
Analog input formula combining unit becomes crucial ring of the intelligent substation analog quantity into digital quantity transfer process
Section, when power network appearance overvoltage, or when atmospheric discharge, or switching manipulation, or short trouble, or circuit re-switching, power network
Transient process occurs in the voltage of system, then needs the modulus analog quantity input type combining unit can be in Millisecond in the process
So that no more than the accurate progress of disease primary voltage of error limit, this is most important for the IED equipment of secondary side in time.According to
Q/GDW 11015-2013《Analog input formula combining unit inspection criterion》It is required that, analog input formula combining unit should be met
5TPE class of accuracy is provided in the tables 20 of GB/T 20840.8, i.e. peak-peak instantaneous error should be not more than 10%.
At present, most of transient test technology of domestic electronic mutual inductor uses the mode of heavy current impact and produced
Transient process high current required for test equipment, is then surveyed to test equipment together with analog input formula combining unit again
Examination.The hardware test condition high investment that this mode is relied on is big, and measuring accuracy is low, takes up an area larger system while needing to build
Physics Dynamic Model Test room, therefore, the transient test technology are not particularly suited for the transient state wink of analog input formula combining unit
The test of time error.
Accordingly, it would be desirable to which the characteristics of being directed to analog input formula combining unit develops a kind of instantaneous error test device, to carry
The measuring accuracy of high transient state instantaneous error.
Utility model content
The utility model purpose is to provide a kind of instantaneous error test device for analog input formula combining unit,
Aim to solve the problem that existing transient test technology has the problem of measuring accuracy is low.
The utility model provides a kind of instantaneous error test device for analog input formula combining unit, including embedding
Enter formula control system, the embedded control system is built-in with default distorted wave, and the instantaneous error test device also includes：Together
Walk signaling interface and light network interface；
The embedded control system is connected with the synchronizing signal interface and the smooth network interface respectively；
The embedded control system is under the synchronizing signal triggering that the synchronizing signal interface is transmitted to analog input
Formula combining unit sends the default distorted wave, and handle that the smooth network interface receives by the analog input formula combining unit
The sample waveform data of output, the Wave data of the default distorted wave and the sample waveform data are contrasted, drawn
The instantaneous error of the analog input formula combining unit.
The utility model provides a kind of instantaneous error test device for analog input formula combining unit, and this is instantaneous
Error testing device includes embedded control system, synchronizing signal interface and light network interface, and embedded control system is in synchronous letter
Default distorted wave is sent to analog input formula combining unit under the synchronizing signal triggering of number interface transmission, and handles light network interface and is connect
The sample waveform data exported by analog input formula combining unit received, by the Wave data and light net of above-mentioned default distorted wave
The sample waveform data that mouth is received are contrasted, and draw the instantaneous error of analog input formula combining unit.Pass through the instantaneous mistake
Poor test device is using built-in default distortional wave as standard signal, and it is single to the merging of analog input formula to export default distortional wave
Member, realizes the reproduction to live transient signal；It is tested using the sample waveform data that analog input formula combining unit is exported
Signal, can be with the transient state instantaneous error of test simulation amount input type combining unit, and simple and easy to apply and measuring accuracy is high, solves
Existing transient test technology has the problem of measuring accuracy is low.
Brief description of the drawings
The instantaneous error test device for analog input formula combining unit that Fig. 1 provides for the utility model embodiment
Circuit theory schematic diagram.
The instantaneous error test device for analog input formula combining unit that Fig. 2 provides for the utility model embodiment
Concrete structure schematic diagram.
The instantaneous error test device for analog input formula combining unit that Fig. 3 provides for the utility model embodiment
Involved fundamental diagram.
Embodiment
In order that the technical problems to be solved in the utility model, technical scheme and beneficial effect are more clearly understood, below
With reference to drawings and Examples, the utility model is further elaborated.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
Fig. 1 shows that the instantaneous error for analog input formula combining unit that the utility model embodiment is provided is tested
The frame structure of device, for convenience of description, illustrate only the part related to the utility model embodiment, details are as follows：
This is used for the instantaneous error test device of analog input formula combining unit, including embedded control system 102, same
Signaling interface 103 and light network interface 104 are walked, embedded control system 102 is built-in with default distorted wave.
Embedded control system 102 is connected with synchronizing signal interface 103 and light network interface 104 respectively.
Embedded control system 102 is under the synchronizing signal triggering that synchronizing signal interface 103 is transmitted to analog input formula
Combining unit sends default distorted wave, and handles the sampling exported by analog input formula combining unit of the reception of light network interface 104
Wave data, the sample waveform data that the Wave data and light network interface 104 of above-mentioned default distorted wave are received are contrasted, and are drawn
The instantaneous error of analog input formula combining unit.
As the embodiment of the utility model one, the instantaneous error test device also includes digital analog converter 105 and power
Amplifier 107, the input of digital analog converter 105 is connected with embedded control system 102, the output of digital analog converter 105
End is connected with power amplifier 107, and the default distorted wave that embedded control system 102 is exported sequentially passes through digital analog converter
Optimization distorted wave is exported after 105 progress digital-to-analogue conversions, the progress signal enhanced processing of power amplifier 107 to close to analog input formula
And unit.
As the embodiment of the utility model one, the instantaneous error test device also includes man-machine interface 101, man-machine interface
101 are connected with the embedded control system 102；Man-machine interface 101 sends control instruction sum to embedded control system 102
According to, and receive and show the information that embedded control system 102 is returned.
As the embodiment of the utility model one, the instantaneous error test device also includes gear and controls output interface 106,
Gear control output interface 106 is connected between embedded control system 102 and power amplifier 107；Gear control output connects
Mouth 106 sends gearshift drive signal to power amplifier 107 according to the gear control instruction of embedded control system 102.
As the embodiment of the utility model one, embedded control system 102 is used with model DSPBF609 height
Fast dual microprocessors be core control system, wherein, microprocessor can also be single-chip microcomputer, arm processor or other
Possesses the programming device of mathematical logic disposal ability.
Digital analog converter 105 is used for the conversion from data signal to analog signal to the Wave data for presetting distorted wave, should
Instantaneous error test device employs DAC (the Digital toAnalog Converter, number for supporting multiplication reference input function
Word analog converter), therefore can support that dynamic reference voltage is inputted, so as to realize double DAC frameworks：Waveform DAC and amplitude
DAC.Waveform DAC is used for output waveform signals, and amplitude size is controlled by amplitude DAC, and two DAC are 16, so that not
The signal resolution degree of highest 32 is provided on the premise of sacrificing speed.
Power amplifier 107 is used for the enhanced processing of the analog signal of the Wave data to presetting distorted wave, current type
Small voltage signal is changed into electric current output by power amplifier 107.The power amplifier 107 of voltage-type is using Linear Power Amplifier design side
Case, high-amplification-factor and accurate feedback element are provided using accurate amplifier to reach the purpose of high pressure and power amplification.Electric current
The power amplifier 107 of formula increases accurate sample resistance as feedback sample link using Zero flux AC/DC mutual inductor.
Gear controls output interface 106, uses the model tpic6a595de deserializers for being exclusively used in relay driving
It is used as drive control device, deserializer can be realized is changed into parallel signal output serial signal, and supports multi-disc
Series connection, as long as therefore 4 I/O mouthful can expand it is any more than drive signals.It, which is also built-in with output pressure limiting mechanism, to suppress
Due to due to voltage spikes caused by inductive load, the driving of the relay class that is particularly suitable for use in load.
Synchronizing signal interface 103 receives and sent synchronizing signal, using model HFBR-1414TZ optical interface device.
Man-machine interface 101 complete and user interactive controlling, inputted, shown by what TFT liquid crystal displays, mouse, keyboard etc. were commonly used
Show that equipment, industrial computer are constituted, using the LX-801A industrial computers of Seatech, industrial computer operation windows operating systems, this is instantaneous
The system controlling software of error testing device is operated on industrial computer, by man-machine interface completion and the interactive controlling of user.
Fig. 2 shows that the instantaneous error for analog input formula combining unit that the utility model embodiment is provided is tested
The concrete structure of device, for convenience of description, illustrate only the part related to the utility model embodiment, details are as follows：
As the embodiment of the utility model one, the embedded control system includes 102：
Memory 1021, communication unit 1022, gear control logic unit 1027, protection location 1028, clock are synchronous single
Member 1023, waveform generating unit 1026, sampling value message processing unit 1024 and instantaneous error verification unit 1025；
Memory 1021 is same with communication unit 1022, gear control logic unit 1027, protection location 1028, clock respectively
Walk unit 1023, waveform generating unit 1026, sampling value message processing unit 1024 and the phase of instantaneous error verification unit 1025
Connection, communication unit 1022 is connected with man-machine interface 101, and clock synchronization unit 1023 is connected with synchronizing signal interface 103, sampling
Value message process unit 1024 is connected with light network interface 104, and waveform generating unit 1026 is connected with digital analog converter 105, gear control
Logic unit 1027 processed is connected with gear control output interface 106.
Communication unit 1022 is used for the communication with man-machine interface 101, receives control instruction and simultaneously returns to operating result.
The setting value and gear control logic value table that gear control logic unit 1027 is exported according to user complete gear control
Function processed.
Protection location 1028 is used for protection to the instantaneous error test device, mainly have voltage overload, current overload with
And system overheat, when protecting generation, the instantaneous error test device will stop exporting and providing prompt tone, and single by communicating
Member 1022 sends alarm signal toward the man-machine interface of host computer.
Clock synchronization unit 1023 receives the synchronizing signal of the transmission of synchronizing signal interface 103, completes instantaneous error test
Device clock is synchronous with outer synchronous signal, can also be exported together by synchronizing signal interface 103 in the case of synchronism output
Walk signal.
Waveform generating unit 1026 is used for waveform fitting and the rate-matched of digital analog converter 105 to presetting distorted wave；
Waveform generating unit 1026 parses waveform signal from the recorded wave file at scene, is made according to the switching rate of digital analog converter 105
A higher Wave data of points is rebuild with second order Lagrange's interpolation algorithm, the Wave data of generation is directly deposited in sequence
Storage is controlled in memory 1021, and by DMA (DirectMemory Access, direct memory access), is connect in synchronizing signal
Under the synchronizing signals triggering of the transmission of mouth 103, give digital analog converter 105 according to fixed speed and carry out digital-to-analogue conversion, and record
The output time and sequence number of first point of Wave data.
Every frame sampling Wave data that 1024 pairs of light network interfaces 104 of sampling value message processing unit are received stamps hardware time stamp,
According to the specified delay in sample waveform data, the sampling instant of each sampled value, sampling instant=hardware time stamp-specified are calculated
Delay.
Instantaneous error verification unit 1025 is used for the verification to the transient state instantaneous error of analog input formula combining unit, with
The sample waveform data exported by analog input formula combining unit that light network interface 104 is received are as tested signal value, according to adopting
Wave data sequence in the sampling instant of sample value, the output time and sequence number, memory 1021 of first point of Wave data, profit
The corresponding standard signal values of sampling instant with being detected signal value are calculated with Lagrange's interpolation algorithm, tested signal value is calculated
Error with standard signal values is that can obtain the transient state instantaneous error of tested combining unit.
Fig. 3 shows that the instantaneous error for analog input formula combining unit that the utility model embodiment is provided is tested
Operation principle involved by device, it is as described below：
Under the synchronizing signal triggering that clock source is exported by synchronizing signal interface, the output of instantaneous error test device is default
The analog signal of distortional wave gives analog input formula combining unit, and analog input formula combining unit is right under synchronizing signal control
Analog signal sampling is inputted, the digital messages of IEC61850-9-2 are exported to test device, instantaneous error test device is with inside
The Wave data of default distortional wave is standard signal, using the digital messages of the IEC61850-9-2 of reception as measured signal, realization pair
The transient state instantaneous error verification of tested combining unit.
In summary, the utility model embodiment provides a kind of instantaneous error for analog input formula combining unit
Test device, the instantaneous error test device includes embedded control system, synchronizing signal interface and light network interface, embedded control
System processed sends default distorted wave under the synchronizing signal triggering that synchronizing signal interface is transmitted to analog input formula combining unit,
And the sample waveform data exported by analog input formula combining unit of light network interface reception are handled, by above-mentioned default distorted wave
The sample waveform data that Wave data and light network interface are received are contrasted, and draw the instantaneous mistake of analog input formula combining unit
Difference.By the instantaneous error test device using built-in default distortional wave as standard signal, and default distortional wave is exported to simulation
Input type combining unit is measured, the reproduction to live transient signal is realized；The sampling exported with analog input formula combining unit
Wave data is tested signal, can be with the transient state instantaneous error of test simulation amount input type combining unit, simple and easy to apply and survey
High precision is tried, existing transient test technology is solved and there is the problem of measuring accuracy is low.The utility model embodiment is realized
Simply, it is not necessary to increase extra hardware, cost can be effectively reduced, with stronger usability and practicality.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of instantaneous error test device for analog input formula combining unit, including embedded control system, described
Embedded control system is built-in with default distorted wave, it is characterised in that the instantaneous error test device also includes：Synchronizing signal
Interface and light network interface；
The embedded control system is connected with the synchronizing signal interface and the smooth network interface respectively；
The embedded control system is closed under the synchronizing signal triggering that the synchronizing signal interface is transmitted to analog input formula
And unit sends the default distorted wave, and handle being exported by the analog input formula combining unit for the smooth network interface reception
Sample waveform data, the Wave data of the default distorted wave and the sample waveform data are contrasted, drawn described
The instantaneous error of analog input formula combining unit.
2. instantaneous error test device as claimed in claim 1, it is characterised in that the instantaneous error test device is also wrapped
Include：
Digital analog converter and power amplifier；
The input of the digital analog converter is connected with the embedded control system, the output end of the digital analog converter with
The power amplifier is connected；
The default distorted wave of embedded control system output sequentially pass through the digital analog converter carry out digital-to-analogue conversion, it is described
Power amplifier exported after signal enhanced processing optimization distorted wave to the analog input formula combining unit.
3. instantaneous error test device as claimed in claim 1, it is characterised in that the instantaneous error test device is also wrapped
Include：
Man-machine interface；
The man-machine interface is connected with the embedded control system；
The man-machine interface sends control instruction and data to the embedded control system, and receives and show described embedded
The information that control system is returned.
4. instantaneous error test device as claimed in claim 2, it is characterised in that the instantaneous error test device is also wrapped
Include：
Gear controls output interface；
The gear control output interface is connected between the embedded control system and the power amplifier；
The gear controls output interface according to the gear control instruction of the embedded control system to the power amplifier
Send gearshift drive signal.
5. instantaneous error test device as claimed in claim 4, it is characterised in that the embedded control system includes：
Memory, communication unit, gear control logic unit, protection location, clock synchronization unit, waveform generating unit, sampling
It is worth message process unit and instantaneous error verification unit；
The memory is same with the communication unit, the gear control logic unit, the protection location, the clock respectively
Step unit, the waveform generating unit, the sampling value message processing unit and the instantaneous error verification unit are connected,
The communication unit is connected with man-machine interface, and the clock synchronization unit is connected with the synchronizing signal interface, the sampled value
Message process unit and the smooth network interface connection, the waveform generating unit are connected with the digital analog converter, the gear control
Logic unit processed is connected with gear control output interface.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202972A (en) * | 2017-07-19 | 2017-09-26 | 广东电网有限责任公司电力科学研究院 | A kind of dynamic distortion Road test system |
| CN108021125A (en) * | 2017-12-28 | 2018-05-11 | 深圳市永达电子信息股份有限公司 | Industrial system signal of communication detecting system |
| CN110568233A (en) * | 2019-03-11 | 2019-12-13 | 河南省计量科学研究院 | meter-source integrated synchronous dynamic distortion power source with trigger and implementation method |
-
2016
- 2016-10-26 CN CN201621181535.4U patent/CN206331106U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202972A (en) * | 2017-07-19 | 2017-09-26 | 广东电网有限责任公司电力科学研究院 | A kind of dynamic distortion Road test system |
| CN107202972B (en) * | 2017-07-19 | 2023-12-22 | 广东电网有限责任公司电力科学研究院 | Dynamic distortion load test system |
| CN108021125A (en) * | 2017-12-28 | 2018-05-11 | 深圳市永达电子信息股份有限公司 | Industrial system signal of communication detecting system |
| CN110568233A (en) * | 2019-03-11 | 2019-12-13 | 河南省计量科学研究院 | meter-source integrated synchronous dynamic distortion power source with trigger and implementation method |
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