CN106054000A - Interval merging unit power factor angle consistency on-site test system and method - Google Patents
Interval merging unit power factor angle consistency on-site test system and method Download PDFInfo
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- CN106054000A CN106054000A CN201610583366.5A CN201610583366A CN106054000A CN 106054000 A CN106054000 A CN 106054000A CN 201610583366 A CN201610583366 A CN 201610583366A CN 106054000 A CN106054000 A CN 106054000A
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- 238000012360 testing method Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005070 sampling Methods 0.000 claims abstract description 14
- 238000010998 test method Methods 0.000 claims abstract description 5
- 230000001360 synchronised effect Effects 0.000 claims description 11
- 230000002950 deficient Effects 0.000 claims description 6
- 238000009432 framing Methods 0.000 claims description 6
- 238000003556 assay Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000002452 interceptive effect Effects 0.000 claims 1
- 238000012795 verification Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
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- Testing Electric Properties And Detecting Electric Faults (AREA)
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Abstract
The present invention relates to an interval merging unit power factor angle consistency on-site test system and method, and relates to the field of verification of the intelligent transformer device. The test system comprises a 0.02 grade band origin merging unit tester and a 0.05 grade standard FT3 generation device. The test method comprises: the standard FT3 generation device simulates the real condition of the cascade interval merging unit of the transformer station on-site bus merging unit, the band origin merging unit tester can test the sampling synchronization precision, and the power factor angle error and the stable state error conditions of the cascade interval merging unit through receiving the digit output of the interval merging unit. The problem is solved that the test is difficult because the transformer station on-site bus merging unit cascade interval merging unit is too far, and therefore the verification work wiring is greatly simplified, and the debugging time is shortened.
Description
Technical field
The present invention relates to intelligent substation UC field, be specifically related to be spaced combining unit power-factor angle concordance
On-site test system and method for testing.
Background technology
At present, domestic digital transformer station mainly uses the combining unit of analog input to complete front-end collection work, presses
According to Q/GDW 11015-2013 " analog input formula combining unit inspection criterion " requirement, the sample-synchronous error of combining unit is not
Exceeding the phase error requirement of respective mode analog quantity, voltage, the phase difference measurement error of electric current are exactly power factor measurement error,
And power factor measurement error directly affects meritorious, wattless power measurement and electric energy metering error, finally affect electricity trade
The fairness of clearing.Therefore it is necessary to the power-factor angle concordance of interval combining unit is tested.
The most generally employing method is to be directly connected to be spaced by the output of bus combining unit by actual span wire system
Combining unit, owing to on-the-spot bus combining unit and interval combining unit are distant, typically has more than 150 meter, being stranded of bracing wire
Difficult big, testing process is loaded down with trivial details, the longest, and the long measuring accuracy that will result directly in of circuit declines, and therefore the method does not has root
The problem of this solution cascade interval combining unit test.
Summary of the invention
The present invention provides a kind of interval combining unit power-factor angle concordance on-site test system and method for testing, to solve
Certainly substation field is due to bus combining unit and the problem of the distant test difficulty brought of interval combining unit.Achieve
Do not changing the sample-synchronous precision that field connection just can test the interval combining unit of cascade.
The present invention adopts the technical scheme that:
A kind of interval conforming on-site test system of combining unit power-factor angle, 0.02 grade of band source combining unit tester
Analog voltage outfan, current output terminal respectively with 0.05 grade standard FT3 generating means and the simulation of interval to be measured combining unit
Amount input is connected, and the FT3 outfan of described 0.05 grade standard FT3 generating means and the FT3 of interval to be measured combining unit receive
End is connected, the ethernet port of interval to be measured combining unit and the ethernet port of described 0.02 grade of band source combining unit tester
It is connected；
Inside described 0.02 grade of band source combining unit tester, the analog voltage current signal to output is sampled, as test
The standard signal of system, receives the IEC61850-9-2 numeral message quilt as test system of interval to be measured combining unit output
Inspection signal；
Described 0.05 grade standard FT3 generating means to input analog voltage signal sample, sample rate and described to be measured between
Consistent every the sample rate of combining unit, each sampling number is according to according to FT3 frame format framing, and output FT3 message is used for simulating
Busbar voltage, bus current；
FT3 message and the analog voltage signal of input, the current signal of reception are synchronized by described interval to be measured combining unit
Sampling, output IEC61850-9-2 numeral message gives described 0.02 grade of band source combining unit tester；
Further, described 0.05 grade standard FT3 generating means includes signal condition and acquisition module, FPGA main control module, FT3
Output module, human-computer interface module and PPS input expansion module；Described signal condition and acquisition module complete analogue signal
Gather and Digitization；Described FPGA main control module is for control signal conditioning and the acquisition controlling of acquisition module, man-machine boundary
The parsing of face instruction, the framing of FT3 message, and synchronization with outside PPS synchronizing signal under synchronous working mode；Described
FT3 output module completes the output of FT3 message；Described human-machine interface module is by I/O mouth and FPGA main control module two-way communication, complete
Become human-computer interaction function；Described PPS input expansion module completes to receive the work of outside PPS synchronizing signal, makes described 0.05 grade
Under standard FT3 generating means can be in the way of being operated in synchronous acquisition.
The present invention proposes a kind of interval conforming method of testing of combining unit power-factor angle, comprises the following steps:
(1) wiring, uses standard FT3 generating means analog bus to merge single in combining unit installation place, transformer station interval to be measured
Unit, and interval to be measured combining unit composition level tie, it may be assumed that the analog voltage of 0.02 grade of band source combining unit tester is exported
End, current output terminal are connected to the analog input end of interval to be measured combining unit as standard channel, are closed in 0.02 grade of band source
And the analog voltage outfan of unit testing instrument, current output terminal are connected to 0.05 grade standard FT3 generating means, by 0.05 grade of mark
The FT3 digital quantity of quasi-FT3 generating means output is connected to interval to be measured combining unit FT3 receiving terminal, interval to be measured combining unit
IEC61850-9-2 digital quantity be connected to the Ethernet input conduct of band source combining unit tester by ethernet port
Tested passage；
(2) test parameter of 0.02 grade of band source combining unit tester is set, including: output voltage, the amplitude of electric current, phase place,
Frequency, the passage configuration of interval to be measured combining unit, virtual no-load voltage ratio, and to arrange test pattern be Asynchronous Mode, starts record ripple
Function；
(3) the voltage x current output of 0.02 grade of band source combining unit tester is started, when 0.02 grade of band source combining unit tester
When demonstrating tested waveform, stop record ripple, thus have recorded the digital quantity of interval to be measured combining unit output from without value to there being value
Process；Reappeared by record ripple, detect tested passage and whether standard channel synchronizes to rise, can judge that the interval of cascade merges
Whether unit exists voltage x current postpones the situation in integer cycle, such that it is able to assay intervals combining unit merges single with bus
The problem that the voltage x current being likely to occur during unit's cascade synchronizes difference integer cycle；
(4) under conventional asynchronous test, calculate described interval to be measured by described 0.02 grade of band source combining unit tester and close
And phase contrast between busbar voltage, bus current, interval voltage, spacing current and the respective mode analog quantity of unit output；If phase
Potential difference is less than the phase error requirement of the interval corresponding class of accuracy of combining unit, and the sampling of interval the most to be measured combining unit is same
Step precision is qualified, the most defective；
(5) phase contrast of every phase voltage is subtracted each other with the phase contrast of corresponding phase current, i.e. can get each phase analogue signal and passing through
The difference of power-factor angle after the combining unit sampling of interval to be measured, if this difference is less than the standard of interval to be measured combining unit
2 times of the phase error limit value of exactness grade, then illustrate that the power-factor angle concordance of interval to be measured combining unit meets the requirements,
The most defective.
Beneficial effects of the present invention: achieve and do not changing field connection and just can test the interval combining unit of cascade
Sample-synchronous precision, solves on-the-spot bus combining unit cascade interval combining unit test bracing wire difficulty, low the asking of accuracy
Topic, greatly simplify verifying work wiring, shortens the time of debugging.
Accompanying drawing explanation
Fig. 1 is test principle block diagram of the present invention；
Fig. 2 is the theory diagram that the present invention tests 0.05 grade standard FT3 generating means of system；
Fig. 3 is the flow chart of method of testing of the present invention.
Detailed description of the invention
A kind of interval conforming on-site test system of combining unit power-factor angle, 0.02 grade of band source combining unit test
The analog voltage outfan of instrument, current output terminal respectively with 0.05 grade standard FT3 generating means and interval to be measured combining unit
Analog input end is connected, the FT3 outfan of described 0.05 grade standard FT3 generating means and the FT3 of interval to be measured combining unit
Receiving terminal is connected, the ethernet port of interval to be measured combining unit and the Ethernet of described 0.02 grade of band source combining unit tester
Port is connected；
Inside described 0.02 grade of band source combining unit tester, the analog voltage current signal to output is sampled, as test
The standard signal of system, receives the IEC61850-9-2 numeral message quilt as test system of interval to be measured combining unit output
Inspection signal；
Described 0.05 grade standard FT3 generating means to input analog voltage signal sample, sample rate and described to be measured between
Consistent every the sample rate of combining unit, each sampling number is according to according to FT3 frame format framing, and output FT3 message is used for simulating
Busbar voltage, bus current；
FT3 message and the analog voltage signal of input, the current signal of reception are synchronized by described interval to be measured combining unit
Sampling, output IEC61850-9-2 numeral message gives described 0.02 grade of band source combining unit tester；
Further, described 0.05 grade standard FT3 generating means includes signal condition and acquisition module, FPGA main control module, FT3
Output module, human-computer interface module and PPS input expansion module；Described signal condition and acquisition module complete analogue signal
Gather and Digitization；Described FPGA main control module is for control signal conditioning and the acquisition controlling of acquisition module, man-machine boundary
The parsing of face instruction, the framing of FT3 message, and synchronization with outside PPS synchronizing signal under synchronous working mode；Described
FT3 output module completes the output of FT3 message；Described human-machine interface module is by I/O mouth and FPGA main control module two-way communication, complete
Become human-computer interaction function；Described PPS input expansion module completes to receive the work of outside PPS synchronizing signal, makes described 0.05 grade
Under standard FT3 generating means can be in the way of being operated in synchronous acquisition.
Verification principle is as follows:
Standard FT3 generating means and interval to be measured combining unit being cascaded, band source combining unit tester is that standard FT3 fills
Put and interval to be measured combining unit applies rated value voltage and current, and the analog voltage current signal conduct of synchronous acquisition output
The standard signal of test system, receives the IEC61850-9-2 numeral message of interval to be measured combining unit output as test simultaneously
The tested signal of system；Standard FT3 generating means simulated field bus combining unit, output FT3 message merges to interval to be measured
Unit；Interval to be measured combining unit carries out synchronized sampling to the FT3 message of reception and the analog voltage current signal of input, output
IEC61850-9-2 numeral message is to band source combining unit tester.
Further, integrated described standard FT3 generating means in the combining unit tester of described band source, composition integration
Device, can simplify the wiring of test system further, reduces verifying work difficulty.
A kind of interval conforming method of testing of combining unit power-factor angle, comprises the following steps:
(1) wiring, uses standard FT3 generating means analog bus to merge single in combining unit installation place, transformer station interval to be measured
Unit, and interval to be measured combining unit composition level tie, it may be assumed that the analog voltage of 0.02 grade of band source combining unit tester is exported
End, current output terminal are connected to the analog input end of interval to be measured combining unit as standard channel, are closed in 0.02 grade of band source
And the analog voltage outfan of unit testing instrument, current output terminal are connected to 0.05 grade standard FT3 generating means, by 0.05 grade of mark
The FT3 digital quantity of quasi-FT3 generating means output is connected to interval to be measured combining unit FT3 receiving terminal, interval to be measured combining unit
IEC61850-9-2 digital quantity be connected to the Ethernet input conduct of band source combining unit tester by ethernet port
Tested passage；
(2) test parameter of 0.02 grade of band source combining unit tester is set, including: output voltage, the amplitude of electric current, phase place,
Frequency, the passage configuration of interval to be measured combining unit, virtual no-load voltage ratio, and to arrange test pattern be Asynchronous Mode, starts record ripple
Function；
(3) the voltage x current output of 0.02 grade of band source combining unit tester is started, when 0.02 grade of band source combining unit tester
When demonstrating tested waveform, stop record ripple, thus have recorded the digital quantity of interval to be measured combining unit output from without value to there being value
Process；Reappeared by record ripple, detect tested passage and whether standard channel synchronizes to rise, can judge that the interval of cascade merges
Whether unit exists voltage x current postpones the situation in integer cycle, such that it is able to assay intervals combining unit merges single with bus
The problem that the voltage x current being likely to occur during unit's cascade synchronizes difference integer cycle；
(4) under conventional asynchronous test, calculate described interval to be measured by described 0.02 grade of band source combining unit tester and close
And phase contrast between busbar voltage, bus current, interval voltage, spacing current and the respective mode analog quantity of unit output；If phase
Potential difference is less than the phase error requirement of the interval corresponding class of accuracy of combining unit, and the sampling of interval the most to be measured combining unit is same
Step precision is qualified, the most defective；
(5) phase contrast of every phase voltage is subtracted each other with the phase contrast of corresponding phase current, i.e. can get each phase analogue signal and passing through
The difference of power-factor angle after the combining unit sampling of interval to be measured, if this difference is less than the standard of interval to be measured combining unit
2 times of the phase error limit value of exactness grade, then illustrate that the power-factor angle concordance of interval to be measured combining unit meets the requirements,
The most defective.
Claims (6)
1. an interval combining unit power-factor angle concordance on-site test system, it is characterised in that: 0.02 grade of band source merges
The analog voltage outfan of unit testing instrument, current output terminal close with 0.05 grade standard FT3 generating means and interval to be measured respectively
And the analog input end of unit is connected, FT3 outfan and the interval to be measured of described 0.05 grade standard FT3 generating means merge single
The FT3 receiving terminal of unit is connected, the ethernet port of interval to be measured combining unit and described 0.02 grade of band source combining unit tester
Ethernet port be connected.
A kind of interval the most according to claim 1 combining unit power-factor angle concordance on-site test system, its feature
It is: inside described 0.02 grade of band source combining unit tester, the analog voltage current signal to output is sampled, as survey
The standard signal of test system, receives the IEC61850-9-2 numeral message of interval to be measured combining unit output as test system
Tested signal.
A kind of interval the most according to claim 1 combining unit power-factor angle concordance on-site test system, its feature
Be: described 0.05 grade standard FT3 generating means to input analog voltage signal sample, sample rate and described to be measured between
Consistent every the sample rate of combining unit, each sampling number is according to according to FT3 frame format framing, and output FT3 message is used for simulating
Busbar voltage, bus current.
A kind of interval the most according to claim 1 combining unit power-factor angle concordance on-site test system, its feature
It is: FT3 message and the analog voltage signal of input, the current signal of reception are synchronized by described interval to be measured combining unit
Sampling, output IEC61850-9-2 numeral message gives described 0.02 grade of band source combining unit tester.
5., according to a kind of interval combining unit power-factor angle concordance on-site test system described in claim 1 or 3, it is special
Levying and be: described 0.05 grade standard FT3 generating means includes signal condition and acquisition module, FPGA main control module, FT3 exports
Module, human-computer interface module and PPS input expansion module；Described signal condition and acquisition module complete the collection of analogue signal
And Digitization；Described FPGA main control module is for control signal conditioning and the acquisition controlling of acquisition module, and man machine interface refers to
The parsing of order, the framing of FT3 message, and synchronization with outside PPS synchronizing signal under synchronous working mode；Described FT3 is defeated
Go out module and complete the output of FT3 message；Described human-machine interface module, by I/O mouth and FPGA main control module two-way communication, completes people
Machine interactive function；Described PPS input expansion module completes to receive the work of outside PPS synchronizing signal, makes described 0.05 grade standard
Under FT3 generating means can be in the way of being operated in synchronous acquisition.
6. the interval conforming method of testing of combining unit power-factor angle, comprises the following steps:
(1) wiring, uses standard FT3 generating means analog bus to merge single in combining unit installation place, transformer station interval to be measured
Unit, and interval to be measured combining unit composition level tie, it may be assumed that the analog voltage of 0.02 grade of band source combining unit tester is exported
End, current output terminal are connected to the analog input end of interval to be measured combining unit as standard channel, are closed in 0.02 grade of band source
And the analog voltage outfan of unit testing instrument, current output terminal are connected to 0.05 grade standard FT3 generating means, by 0.05 grade of mark
The FT3 digital quantity of quasi-FT3 generating means output is connected to interval to be measured combining unit FT3 receiving terminal, interval to be measured combining unit
IEC61850-9-2 digital quantity be connected to the Ethernet input conduct of band source combining unit tester by ethernet port
Tested passage；
(2) test parameter of 0.02 grade of band source combining unit tester is set, including: output voltage, the amplitude of electric current, phase place,
Frequency, the passage configuration of interval to be measured combining unit, virtual no-load voltage ratio, and to arrange test pattern be Asynchronous Mode, starts record ripple
Function；
(3) the voltage x current output of 0.02 grade of band source combining unit tester is started, when 0.02 grade of band source combining unit tester
When demonstrating tested waveform, stop record ripple, thus have recorded the digital quantity of interval to be measured combining unit output from without value to there being value
Process；Reappeared by record ripple, detect tested passage and whether standard channel synchronizes to rise, can judge that the interval of cascade merges
Whether unit exists voltage x current postpones the situation in integer cycle, such that it is able to assay intervals combining unit merges single with bus
The problem that the voltage x current being likely to occur during unit's cascade synchronizes difference integer cycle；
(4) under conventional asynchronous test, calculate described interval to be measured by described 0.02 grade of band source combining unit tester and close
And phase contrast between busbar voltage, bus current, interval voltage, spacing current and the respective mode analog quantity of unit output；If phase
Potential difference is less than the phase error requirement of the interval corresponding class of accuracy of combining unit, and the sampling of interval the most to be measured combining unit is same
Step precision is qualified, the most defective；
(5) phase contrast of every phase voltage is subtracted each other with the phase contrast of corresponding phase current, i.e. can get each phase analogue signal and passing through
The difference of power-factor angle after the combining unit sampling of interval to be measured, if this difference is less than the standard of interval to be measured combining unit
2 times of the phase error limit value of exactness grade, then illustrate that the power-factor angle concordance of interval to be measured combining unit meets the requirements,
The most defective.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107300651A (en) * | 2017-07-24 | 2017-10-27 | 中国电力科学研究院 | A kind of digital quantity input type standard combining unit |
| CN109030971A (en) * | 2018-04-12 | 2018-12-18 | 广东电网有限责任公司 | A kind of method that flexible direct current FT3 message template library is formed |
| CN112014669A (en) * | 2020-08-25 | 2020-12-01 | 武汉中元华电电力设备有限公司 | Online detection method and system for angle difference and ratio difference of merging unit |
| CN115267372A (en) * | 2022-06-15 | 2022-11-01 | 国网山东省电力公司邹城市供电公司 | Integrated test method, system, medium and equipment for secondary system of transformer substation |
| CN117154798A (en) * | 2023-10-26 | 2023-12-01 | 深圳市德兰明海新能源股份有限公司 | Three-phase energy storage system and CT correction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107300651A (en) * | 2017-07-24 | 2017-10-27 | 中国电力科学研究院 | A kind of digital quantity input type standard combining unit |
| CN109030971A (en) * | 2018-04-12 | 2018-12-18 | 广东电网有限责任公司 | A kind of method that flexible direct current FT3 message template library is formed |
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| CN106054000B (en) | 2018-08-28 |
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