CN205826779U - A kind of interval combining unit power-factor angle concordance on-site test system - Google Patents
A kind of interval combining unit power-factor angle concordance on-site test system Download PDFInfo
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- CN205826779U CN205826779U CN201620778703.1U CN201620778703U CN205826779U CN 205826779 U CN205826779 U CN 205826779U CN 201620778703 U CN201620778703 U CN 201620778703U CN 205826779 U CN205826779 U CN 205826779U
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Abstract
This utility model relates to a kind of interval combining unit power-factor angle concordance on-site test system, belongs to intelligent substation UC field.The analog voltage outfan of 0.02 grade of band source combining unit tester, current output terminal analog input end with 0.05 grade standard FT3 generating means and interval to be measured combining unit respectively is connected, the described FT3 outfan of 0.05 grade standard FT3 generating means and the FT3 receiving terminal of interval to be measured combining unit are connected, and the ethernet port of interval to be measured combining unit is connected with the ethernet port of described 0.02 grade of band source combining unit tester.Advantage is novel structure, achieve and do not changing the sample-synchronous precision that field connection just can test the interval combining unit of cascade, solve the problem that the combining unit test bracing wire of on-the-spot bus combining unit cascade interval is difficult, accuracy is low, greatly simplify verifying work wiring, shorten the time of debugging.
Description
Technical field
This utility model relates to intelligent substation UC field, is specifically related to be spaced combining unit power-factor angle one
The on-site test system of cause property.
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.
It is currently and is directly connected to be spaced combining unit by the output of bus combining unit by actual span wire system, due to
On-the-spot bus combining unit and interval combining unit are distant, typically have more than 150 meter, and the difficulty of bracing wire is big, testing process
Loaded down with trivial details, the longest, and also the long measuring accuracy that will result directly in of circuit declines, and the most not basic cascade interval that solves merges single
The problem of unit's test.
Summary of the invention
This utility model provides one interval combining unit power-factor angle concordance on-site test system, to solve power transformation
The scene of standing is due to bus combining unit and the problem of the distant test difficulty brought of interval combining unit.
This utility model adopts the technical scheme that: the analog voltage outfan of 0.02 grade of band source combining unit tester,
Current output terminal analog input end with 0.05 grade standard FT3 generating means and interval to be measured combining unit respectively is connected, institute
The FT3 receiving terminal of the FT3 outfan and interval to be measured combining unit of stating 0.05 grade standard FT3 generating means is connected, interval to be measured
The ethernet port of combining unit is connected with the ethernet port of described 0.02 grade of band source combining unit tester；
Inside described 0.02 grade of band source combining unit tester, the analog voltage current signal to output is sampled, as
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；
The analog voltage signal of input is sampled by described 0.05 grade standard FT3 generating means, and sample rate is treated with described
The sample rate surveying interval combining unit is consistent, and each sampling number is according to according to FT3 frame format framing, and output FT3 message is used for
Analog bus voltage, bus current；
FT3 message and the analog voltage signal of input, the current signal of reception are carried out by described interval to be measured combining unit
Synchronized sampling, output IEC61850-9-2 numeral message gives described 0.02 grade of band source combining unit tester.
The utility model has the advantages that novel structure, it is achieved that at the interval not changing field connection and just can testing cascade
The sample-synchronous precision of combining unit, solves the combining unit test bracing wire of on-the-spot bus combining unit cascade interval difficult, accurate
The problem that really property is low, greatly simplify verifying work wiring, shortens the time of debugging.
Accompanying drawing explanation
Fig. 1 is this utility model test principle block diagram；
Fig. 2 is the theory diagram of 0.05 grade standard FT3 generating means of this utility model test system.
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
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；
The analog voltage signal of input is sampled by described 0.05 grade standard FT3 generating means, and sample rate is treated with described
The sample rate surveying interval combining unit is consistent, and each sampling number is according to according to FT3 frame format framing, and output FT3 message is used for
Analog bus voltage, bus current；
FT3 message and the analog voltage signal of input, the current signal of reception are carried out by described interval to be measured combining unit
Synchronized 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 simulation letter
Number collection and Digitization；Described FPGA main control module is for control signal conditioning and the acquisition controlling of acquisition module, people
The parsing of machine interface instructions, the framing of FT3 message, and synchronization with outside PPS synchronizing signal under synchronous working mode；Institute
State FT3 output module and complete the output of FT3 message；Described human-machine interface module passes through I/O mouth and FPGA main control module two-way communication,
Finishing man-machine interaction function；Described PPS input expansion module completes to receive the work of outside PPS synchronizing signal, makes described 0.05
Under grade 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 is sent out
Generating apparatus and interval to be measured combining unit apply rated value voltage and current, and the analog voltage current signal of synchronous acquisition output
As the standard signal of test system, receive the IEC61850-9-2 numeral message conduct of interval to be measured combining unit output simultaneously
The tested signal of test system；Standard FT3 generating means simulated field bus combining unit, output FT3 message gives interval to be measured
Combining 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.
Claims (4)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620778703.1U CN205826779U (en) | 2016-07-22 | 2016-07-22 | A kind of interval combining unit power-factor angle concordance on-site test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620778703.1U CN205826779U (en) | 2016-07-22 | 2016-07-22 | A kind of interval combining unit power-factor angle concordance on-site test system |
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| CN205826779U true CN205826779U (en) | 2016-12-21 |
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| CN201620778703.1U Active CN205826779U (en) | 2016-07-22 | 2016-07-22 | A kind of interval combining unit power-factor angle concordance on-site test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054000A (en) * | 2016-07-22 | 2016-10-26 | 吉林省电力科学研究院有限公司 | Interval merging unit power factor angle consistency on-site test system and method |
-
2016
- 2016-07-22 CN CN201620778703.1U patent/CN205826779U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054000A (en) * | 2016-07-22 | 2016-10-26 | 吉林省电力科学研究院有限公司 | Interval merging unit power factor angle consistency on-site test system and method |
| CN106054000B (en) * | 2016-07-22 | 2018-08-28 | 吉林省电力科学研究院有限公司 | It is spaced combining unit power-factor angle consistency on-site test system and test method |
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| GR01 | Patent grant |