CN106093563A - A kind of substation secondary side power measuring system and measuring method thereof - Google Patents
A kind of substation secondary side power measuring system and measuring method thereof Download PDFInfo
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- CN106093563A CN106093563A CN201610370582.1A CN201610370582A CN106093563A CN 106093563 A CN106093563 A CN 106093563A CN 201610370582 A CN201610370582 A CN 201610370582A CN 106093563 A CN106093563 A CN 106093563A
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- clock synchronization
- electric energy
- wireless communication
- communication module
- synchronization module
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/06—Non-electrical signal transmission systems, e.g. optical systems through light guides, e.g. optical fibres
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of substation secondary side power measuring system, including: voltage transformer, current transformer, the first optical transmitter, the second optical transmitter, the first optical receiver, the second optical receiver, combining unit, optical Ethernet switch, electric energy meter, calculating control centre, clock synchronization module, wireless communication module etc..It is remote that the present invention solves Intelligent substation merging unit distance, the unsafe problem of Site Detection, it is possible to achieve the combining unit of strange land distribution and the synchronization electric energy measurement of the electric energy meter of branch road, measures numerical value accurate, can keep synchronizing, improve accuracy and the reliability of the electric energy metrical of transformer station.This device has conveniently, succinct, efficiently and the feature such as safety.
Description
Technical field:
The invention belongs to Electric Energy Metering Technology field, be specifically related to a kind of substation secondary side power measuring system and
Measuring method.
Background technology:
In recent years, along with intelligent substation Switching, photoelectric current transformer, once operation equipment on-line state-detection, change
Training on operation emulation technology is run in power station, the network one-tenth increasingly developing the technology such as application in real-time system told by computer
Ripe, for transformer station information gathering, transmit and measure, measure, the aspect such as protection realize digitized processing provide theory and
Material base.The development of photoelectricity, microelectronics, computer and communication technology makes the various intelligent apparatus in transformer station possess number
The features such as word, intellectuality and low-power consumption.The equipment that combining unit is accompanied by intelligent substation rise and occurs, current intelligence
Can transformer substation system build mainly include several parts such as key-course, process layer, wall, process layer be responsible for transmit analog quantity,
The signal such as switching value, tripping operation, and combining unit is one of nucleus equipment of transformer station process layer, respectively with electronic type mutual inductance
The secondary side data-interface of device connects, and the data port of protection measuring and controlling equipment connects, in order to realize transformer station's electric current and electricity
The synchronous acquisition of the analog quantitys such as pressure and merging treatment.
Electric energy meter metering to having put into operation carries out in-site measurement, typically uses On-line Measuring Method, i.e. substation secondary side
Loop combining unit measurement and branch road electric energy meter metering.But owing to electric current merges circuit units, voltage merging loop
It is distributed that unit and electric energy meter are generally strange land, surveys carrying out substation secondary side electric energy on-line metering by loop combining unit
When amount and electric energy meter measure, it is consistent that the moment of measurement, period and duration are unable to reach more accurate synchronization, often produces one
Fixed error in dipping, lacks metering secondary is entered the quality of power supply of line to analyze in real time and comparison, for when peak of power consumption simultaneously
The electric energy metrical of the special periods such as section, the metering numerical value causing the secondary side electric energy of transformer station and electric energy meter is not accurate enough so that
The result that final school is surveyed is not satisfactory, causes the accuracy of the electric energy metrical of transformer station and reliability to reduce.
Summary of the invention:
To this end, the technical problem to be solved is in prior art the secondary side electric energy measurement for transformer station
System meters numerical value is inaccurate, it is impossible to keeping synchronizing, the accuracy and the reliability that ultimately result in the electric energy metrical of transformer station are low, from
And a kind of substation secondary side power measuring system and measuring method thereof are proposed.
For reaching above-mentioned purpose, technical scheme is as follows:
A kind of substation secondary side power measuring system, including:
Voltage transformer, described voltage transformer connects the first optical transmitter.
Current transformer, described current transformer connects the second optical transmitter.
Combining unit, described combining unit is connected to the first optical receiver and the second optical receiver, described first light
Receptor and described first optical transmitter communication connection, described second optical receiver and described second optical transmitter communication connection.
Optical Ethernet switch, the first end of described optical Ethernet switch is connected with described combining unit.
Electric energy meter, described electric energy meter is connected with the second end of described optical Ethernet switch.
Calculating control centre, described calculating control centre is connected with described optical Ethernet switch.
Clock synchronization module, described clock synchronization module include the first clock synchronization module, second clock synchronization module,
Three clock synchronization modules, described first clock synchronization module is connected with described combining unit, described second clock synchronization module with
Described electric energy meter connects, and described 3rd clock synchronization module is connected with described calculating control centre.
Preferred as technique scheme, also includes:
Wireless communication module, described wireless communication module include the first wireless communication module, the second wireless communication module,
Three wireless communication modules, described first wireless communication module is connected with described combining unit, described second wireless communication module with
Described electric energy meter connects, and described 3rd wireless communication module is connected with described calculating control centre.
Preferred as technique scheme, described first wireless communication module, described second wireless communication module, described
3rd wireless communication module is WIFI communication module.
Preferred as technique scheme, described electric energy meter is digitalized electrical energy meter.
Preferred as technique scheme, described optical Ethernet switch and described combining unit, described electric energy meter, institute
State calculating control centre and use fiber optic communication mode.
Preferred as technique scheme, described first clock synchronization module, described second clock synchronization module, described
3rd clock synchronization module is gps clock synchronization module, is provided with pulse per second (PPS) device and B in described gps clock synchronization module
Code advertiser.
A kind of substation secondary side electric energy measurement method, comprises the steps:
S1: select the combining unit that substation secondary side is tested, make outfan correspondence access by optical Ethernet switch
The voltage circuit of electric energy meter and current loop.
S2: be combined list respectively by the first clock synchronization module, second clock synchronization module, the 3rd clock synchronization module
Unit, electric energy meter, calculating control centre carry out time synchronized.
S3: voltage transformer measures acquisition the first voltage measuring value, and is sent to merge by the first optical transmitter
Unit, current transformer measures acquisition the first current measurement value, and is sent to combining unit by the second optical transmitter, closes
And the first voltage measuring value and the first current measurement value are sent to calculate control centre by unit by the first wireless communication module.
Electric energy meter obtains electrical energy pulse measured value, and is sent to calculate control centre by the second wireless communication module.
S4: calculate control centre by the 3rd wireless communication module receive the first voltage measuring value, the first current measurement value,
Electrical energy pulse measured value, and carry out total score analysis and calculating, obtain measurement result.
S5: complete to measure.
The beneficial effects of the present invention is: it is remote that the present invention solves Intelligent substation merging unit distance, and Site Detection is not
The problem of safety, it is possible to achieve the combining unit of strange land distribution and the synchronization electric energy measurement of the electric energy meter of branch road, measures numerical value
Accurately, it is possible to keep synchronizing, improve accuracy and the reliability of the electric energy metrical of transformer station.This device has conveniently, succinct,
Efficiently and the feature such as safety.
Accompanying drawing illustrates:
The following drawings is only intended to, in schematically illustrating the present invention and explaining, not delimit the scope of the invention.Wherein:
Fig. 1 is the substation secondary side power measuring system structural representation of one embodiment of the invention；
Fig. 2 is the substation secondary side electric energy measurement method flow diagram of one embodiment of the invention.
Symbol description in figure:
1-voltage transformer, 2-the first optical transmitter, 3-current transformer, 4-the second optical transmitter, 5-combining unit, 6-
First optical receiver, 7-the second optical receiver, 8-optical Ethernet switch, 9-electric energy meter, 10-calculates control centre, 11-clock
Synchronization module, 12-wireless communication module, 1101-the first clock synchronization module, 1102-second clock synchronization module, 1103-
Three clock synchronization modules, 1201-the first wireless communication module, 1202-the second wireless communication module, 1203-the 3rd radio communication
Module.
Detailed description of the invention:
Embodiment 1
As it is shown in figure 1, the substation secondary side power measuring system of the present invention, including:
Voltage transformer 1, described voltage transformer 1 connects the first optical transmitter 2.
Current transformer 3, described current transformer 3 connects the second optical transmitter 4.
Combining unit 5, described combining unit 5 is connected to the first optical receiver 6 and the second optical receiver 7, and described
One optical receiver 6 communicates to connect with described first optical transmitter 2, and described second optical receiver 7 leads to described second optical transmitter 4
Letter connects.
Optical Ethernet switch 8, the first end of described optical Ethernet switch 8 is connected with described combining unit 5.This enforcement
In example, described optical Ethernet switch 8 uses light with described combining unit 5, described electric energy meter 9, described calculating control centre 10
Fiber communication mode.
Electric energy meter 9, described electric energy meter 9 is connected with the second end of described optical Ethernet switch 8.In the present embodiment, described
Electric energy meter 9 is digitalized electrical energy meter.
Calculating control centre 10, described calculating control centre 10 is connected with described optical Ethernet switch 8.
Clock synchronization module 11, described clock synchronization module 11 includes that the first clock synchronization module 1101, second clock are same
Step module the 1102, the 3rd clock synchronization module 1103, described first clock synchronization module 1101 is connected with described combining unit 5,
Described second clock synchronization module 1102 is connected with described electric energy meter 9, described 3rd clock synchronization module 1103 and described calculating
Control centre 10 connects.In the present embodiment, described first clock synchronization module 1101, described second clock synchronization module 1102,
Described 3rd clock synchronization module 1103 is gps clock synchronization module, is provided with pulse per second (PPS) in described gps clock synchronization module
Device and B code advertiser.
Wireless communication module 12, described wireless communication module 12 includes first wireless communication module the 1201, second channel radio
Letter module the 1202, the 3rd wireless communication module 1203, described first wireless communication module 1201 is connected with described combining unit 5,
Described second wireless communication module 1202 is connected with described electric energy meter 9, described 3rd wireless communication module 1203 and described calculating
Control centre 10 connects.Described first wireless communication module 1201, described second wireless communication module 1202, described 3rd wireless
Communication module 1203 is WIFI communication module.
Substation secondary side power measuring system described in the present embodiment, including: voltage transformer, current transformer,
The exchange of one optical transmitter, the second optical transmitter, the first optical receiver, the second optical receiver, combining unit, optical Ethernet is mechanical, electrical
Can table, calculating control centre, clock synchronization module, wireless communication module etc..The present invention solves Intelligent substation merging unit
Distance is remote, the unsafe problem of Site Detection, it is possible to achieve the combining unit of strange land distribution and the synchronization of the electric energy meter of branch road
Electric energy measurement, measures numerical value accurate, it is possible to keeps synchronizing, improves accuracy and the reliability of the electric energy metrical of transformer station.This
Device has conveniently, succinct, efficiently and the feature such as safety.
Embodiment 2
As in figure 2 it is shown, the substation secondary side electric energy measurement method of the present invention, comprise the steps:
S1: select the combining unit 5 that substation secondary side is tested, make outfan correspondence connect by optical Ethernet switch 8
Enter voltage circuit and the current loop of electric energy meter 9.
S2: by the first clock synchronization module 1101, second clock synchronization module the 1102, the 3rd clock synchronization module 1103
Be combined respectively unit 5, electric energy meter 9, calculate control centre 10 carry out time synchronized.
S3: voltage transformer 1 measures acquisition the first voltage measuring value, and is sent to close by the first optical transmitter 2
And unit 5, current transformer 3 measures acquisition the first current measurement value, and is sent to merge list by the second optical transmitter 4
Unit 5, the first voltage measuring value and the first current measurement value are sent to meter by the first wireless communication module 1201 by combining unit 5
Calculate control centre 10.
Electric energy meter 9 obtains electrical energy pulse measured value, and is sent to calculate in control by the second wireless communication module 1202
The heart 10.
S4: calculate control centre 10 and receive the first voltage measuring value, the first electric current by the 3rd wireless communication module 1203
Measured value, electrical energy pulse measured value, and carry out total score analysis and calculating, obtain measurement result.
S5: complete to measure.
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.Right
For those of ordinary skill in the field, can also make on the basis of the above description other multi-form change or
Variation.Here without also cannot all of embodiment be given exhaustive.And the obvious change thus extended out or
Change among still in the protection domain of the invention.
Claims (7)
1. a substation secondary side power measuring system, it is characterised in that including:
Voltage transformer (1), described voltage transformer (1) connects the first optical transmitter (2)；
Current transformer (3), described current transformer (3) connects the second optical transmitter (4)；
Combining unit (5), described combining unit (5) is connected to the first optical receiver (6) and the second optical receiver (7), institute
State the first optical receiver (6) to communicate to connect with described first optical transmitter (2), described second optical receiver (7) and described second
Optical transmitter (4) communicates to connect；
Optical Ethernet switch (8), the first end of described optical Ethernet switch (8) is connected with described combining unit (5)；
Electric energy meter (9), described electric energy meter (9) is connected with the second end of described optical Ethernet switch (8)；
Calculating control centre (10), described calculating control centre (10) is connected with described optical Ethernet switch (8)；
Clock synchronization module (11), described clock synchronization module (11) includes the first clock synchronization module (1101), second clock
Synchronization module (1102), the 3rd clock synchronization module (1103), described first clock synchronization module (1101) merges list with described
Unit (5) connects, and described second clock synchronization module (1102) is connected with described electric energy meter (9), described 3rd clock synchronization module
(1103) it is connected with described calculating control centre (10).
Substation secondary side the most according to claim 1 power measuring system, it is characterised in that also include:
Wireless communication module (12), described wireless communication module (12) includes the first wireless communication module (1201), second wireless
Communication module (1202), the 3rd wireless communication module (1203), described first wireless communication module (1201) merges list with described
Unit (5) connects, and described second wireless communication module (1202) is connected with described electric energy meter (9), described 3rd wireless communication module
(1203) it is connected with described calculating control centre (10).
Substation secondary side the most according to claim 2 power measuring system, it is characterised in that:
Described first wireless communication module (1201), described second wireless communication module (1202), described 3rd radio communication mold
Block (1203) is WIFI communication module.
Substation secondary side the most according to claim 3 power measuring system, it is characterised in that:
Described electric energy meter (9) is digitalized electrical energy meter.
Substation secondary side the most according to claim 4 power measuring system, it is characterised in that:
Described optical Ethernet switch (8) and described combining unit (5), described electric energy meter (9), described calculating control centre (10)
Use fiber optic communication mode.
Substation secondary side the most according to claim 5 power measuring system, it is characterised in that:
Described first clock synchronization module (1101), described second clock synchronization module (1102), described 3rd clock synchronize mould
Block (1103) is gps clock synchronization module, is provided with pulse per second (PPS) device and B code signal dress in described gps clock synchronization module
Put.
7. a substation secondary side electric energy measurement method, it is characterised in that comprise the steps:
S1: select the combining unit (5) that substation secondary side is tested, make outfan correspondence connect by optical Ethernet switch (8)
Enter voltage circuit and the current loop of electric energy meter (9)；
S2: by the first clock synchronization module (1101), second clock synchronization module (1102), the 3rd clock synchronization module
(1103) be combined respectively unit (5), electric energy meter (9), calculate control centre (10) carry out time synchronized；
S3: voltage transformer (1) measures acquisition the first voltage measuring value, and is sent to close by the first optical transmitter (2)
And unit (5), current transformer (3) is measured acquisition the first current measurement value, and is sent to by the second optical transmitter (4)
Combining unit (5), the first voltage measuring value and the first current measurement value are passed through the first wireless communication module by combining unit (5)
(1201) it is sent to calculate control centre (10)；
Electric energy meter (9) obtains electrical energy pulse measured value, and is sent to calculate in control by the second wireless communication module (1202)
The heart (10)；
S4: calculate control centre (10) and receive the first voltage measuring value, the first electric current by the 3rd wireless communication module (1203)
Measured value, electrical energy pulse measured value, and carry out total score analysis and calculating, obtain measurement result；
S5: complete to measure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610370582.1A CN106093563A (en) | 2016-05-27 | 2016-05-27 | A kind of substation secondary side power measuring system and measuring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610370582.1A CN106093563A (en) | 2016-05-27 | 2016-05-27 | A kind of substation secondary side power measuring system and measuring method thereof |
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| CN106093563A true CN106093563A (en) | 2016-11-09 |
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| CN201610370582.1A Pending CN106093563A (en) | 2016-05-27 | 2016-05-27 | A kind of substation secondary side power measuring system and measuring method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110940854A (en) * | 2019-11-14 | 2020-03-31 | 国网江西省电力有限公司电力科学研究院 | Alternating current synchronous electric energy metering system based on Beidou/GPS clock |
| CN111090003A (en) * | 2019-11-14 | 2020-05-01 | 国网江西省电力有限公司电力科学研究院 | Synchronous direct current electric energy metering system based on Beidou/GPS clock |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305922A (en) * | 2011-05-25 | 2012-01-04 | 湖南省电力公司科学研究院 | On-load detection method and device for intelligent optical fiber electric energy meter in substation |
| CN102809741A (en) * | 2012-08-14 | 2012-12-05 | 河南弘正电气科技有限公司 | Intelligent monitoring and managing information system for electric energy metering devices of substations |
| CN103472433A (en) * | 2013-09-12 | 2013-12-25 | 国家电网公司 | Intelligent substation electric energy measuring secondary system virtual load error detection device and method |
| CN203433104U (en) * | 2013-09-12 | 2014-02-12 | 国家电网公司 | Real load error detector for secondary electric-energy metering loop of intelligent transformer station |
| CN103630868A (en) * | 2013-09-23 | 2014-03-12 | 中国电子科技集团公司第二十七研究所 | Remote substation electrical energy metering information detection system |
| CN203811795U (en) * | 2013-09-23 | 2014-09-03 | 中国电子科技集团公司第二十七研究所 | Remote detection system for electric energy metering information of transformer station |
| CN204065388U (en) * | 2014-03-28 | 2014-12-31 | 云南电力试验研究院（集团）有限公司电力研究院 | A kind of Secondary Circuit of Potential Transformer pressure drop wireless detection device |
| CN105467352A (en) * | 2015-07-13 | 2016-04-06 | 国家电网公司 | Intelligent substation secondary side electric energy metering system detection method |
-
2016
- 2016-05-27 CN CN201610370582.1A patent/CN106093563A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305922A (en) * | 2011-05-25 | 2012-01-04 | 湖南省电力公司科学研究院 | On-load detection method and device for intelligent optical fiber electric energy meter in substation |
| CN102809741A (en) * | 2012-08-14 | 2012-12-05 | 河南弘正电气科技有限公司 | Intelligent monitoring and managing information system for electric energy metering devices of substations |
| CN103472433A (en) * | 2013-09-12 | 2013-12-25 | 国家电网公司 | Intelligent substation electric energy measuring secondary system virtual load error detection device and method |
| CN203433104U (en) * | 2013-09-12 | 2014-02-12 | 国家电网公司 | Real load error detector for secondary electric-energy metering loop of intelligent transformer station |
| CN103630868A (en) * | 2013-09-23 | 2014-03-12 | 中国电子科技集团公司第二十七研究所 | Remote substation electrical energy metering information detection system |
| CN203811795U (en) * | 2013-09-23 | 2014-09-03 | 中国电子科技集团公司第二十七研究所 | Remote detection system for electric energy metering information of transformer station |
| CN204065388U (en) * | 2014-03-28 | 2014-12-31 | 云南电力试验研究院（集团）有限公司电力研究院 | A kind of Secondary Circuit of Potential Transformer pressure drop wireless detection device |
| CN105467352A (en) * | 2015-07-13 | 2016-04-06 | 国家电网公司 | Intelligent substation secondary side electric energy metering system detection method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110940854A (en) * | 2019-11-14 | 2020-03-31 | 国网江西省电力有限公司电力科学研究院 | Alternating current synchronous electric energy metering system based on Beidou/GPS clock |
| CN111090003A (en) * | 2019-11-14 | 2020-05-01 | 国网江西省电力有限公司电力科学研究院 | Synchronous direct current electric energy metering system based on Beidou/GPS clock |
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