CN109991509A - A kind of distribution network failure identification and positioning system based on wide area measurement technology - Google Patents
A kind of distribution network failure identification and positioning system based on wide area measurement technology Download PDFInfo
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- CN109991509A CN109991509A CN201711469125.9A CN201711469125A CN109991509A CN 109991509 A CN109991509 A CN 109991509A CN 201711469125 A CN201711469125 A CN 201711469125A CN 109991509 A CN109991509 A CN 109991509A
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- network failure
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- 238000005259 measurement Methods 0.000 title claims abstract description 27
- 238000005516 engineering process Methods 0.000 title claims abstract description 25
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 230000003750 conditioning effect Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 14
- 238000004891 communication Methods 0.000 description 11
- 230000003993 interaction Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
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- 235000013399 edible fruits Nutrition 0.000 description 1
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- 230000035945 sensitivity Effects 0.000 description 1
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Classifications
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Locating Faults (AREA)
Abstract
The present invention provides a kind of distribution network failure identification and positioning system based on wide area measurement technology, the distribution network failure identification and positioning system based on wide area measurement technology include: 3, the distribution network failure identification and positioning system according to claim 1 based on wide area measurement technology, it is characterized in that, the display screen is liquid crystal display.The beneficial effects of the present invention are: the distribution network failure identification based on wide area measurement technology is to realize the function of feeder line, section where quickly judging, determining fault point using intelligence system, device when occurring the failures such as short circuit or broken string in distribution network with positioning system.It needs while meeting reliability and accuracy, it is the basis and premise that distribution network failure is isolated, excludes, restoring electricity.
Description
Technical field
The present invention relates to the technical field of power grid more particularly to a kind of distribution network failures based on wide area measurement technology
Identification and positioning system.
Background technique
Power distribution network, which refers to from power transmission network or regional power plant, receives electric energy, distribute or is pressed on the spot by distribution facility voltage by
Grade distributes to the power network of all types of user.It is by overhead transmission line, cable, shaft tower, distribution transformer, disconnecting switch, reactive compensation
The compositions such as device and some affiliated facilities, the network of important distribution electric energy effect is played in power network.Power grid has voltage class
It is more, the complicated network structure, device type multiplicity, the features such as operation is multi-point and wide-ranging, and security context is relatively poor, therefore power distribution network
Security risk factor is also relatively more.In addition, since the function of power distribution network is to provide electric power energy for all types of user, this is just to matching
The safe and reliable operation of net proposes requirements at the higher level.
Distribution line lead line footpath is smaller than transmission line of electricity, and " main section and disagreement line " and " upper and lower adjacent lines "
Wire type size heterogeneity is big, causes the line short impedance angle φ of distribution wire smaller, i.e., R/X is larger.Not only transmitting electricity
Load flow calculation conventional algorithm employed in net is difficult to be restrained in distribution Load flow calculation, can also be short because of different point failures
Road impedance angle is inconsistent, generates certain influence to protection act sensitivity and reliability.But in the prior art to the prison of power grid
It is not especially desirable for controlling effect.
Summary of the invention
The purpose of the invention is to overcome the deficiencies of the prior art and provide a kind of distribution based on wide area measurement technology
Net fault identification and positioning system.
The present invention is achieved through the following technical solutions:
The present invention provides a kind of distribution network failure identification and positioning system based on wide area measurement technology, should be based on wide area measurement
Distribution network failure identification and the positioning system of technology include: electric power monitoring terminal and communicate to connect with the electric power monitoring terminal
Monitoring center；Wherein,
The electric power monitoring terminal includes: current transformer and voltage transformer, further include respectively with the current transformer and
The signal conditioning circuit module of voltage transformer connection, the AD conversion chip connecting with the signal conditioning circuit module are also wrapped
Include the control chip connecting with the AD conversion chip；It further include the GPS module being connect with the control chip signal, clock core
Piece, key and GPRS module.
Preferably, the electric power monitoring terminal further includes display screen, and the display screen is connect with the control chip signal.
Preferably, the display screen is liquid crystal display.
Preferably, the electric power monitoring terminal further includes memory module, the memory module and the control chip
Connection.
Preferably, the memory module is external flash storage.
Preferably, the control chip is STM32 chip.
Preferably, the AD conversion module is ADS8365 module.
The beneficial effects of the present invention are: distribution network failure identification and positioning system based on wide area measurement technology are to work as distribution
In network occur short circuit or broken string etc. failures, using intelligence system, device realization quickly judge, determine fault point place feeder line,
The function of section.It needs while meeting reliability and accuracy, it is the base that distribution network failure is isolated, excludes, restoring electricity
Plinth and premise.
Detailed description of the invention
Fig. 1 is the knot of the distribution network failure identification and positioning system provided in an embodiment of the present invention based on wide area measurement technology
Structure schematic diagram；
Fig. 2 is the structural schematic diagram of electric power monitoring terminal provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figs.1 and 2, Fig. 1 is the distribution network failure identification provided by the invention based on wide area measurement technology
With the structural schematic diagram of positioning system.Fig. 2 is the structural schematic diagram of electric power monitoring terminal provided in an embodiment of the present invention.
The present invention provides a kind of distribution network failure identification and positioning system based on wide area measurement technology, should be based on wide area
Distribution network failure identification and the positioning system of measuring technique include: electric power monitoring terminal 1 and lead to the electric power monitoring terminal 1
Believe the monitoring center 2 of connection；Wherein,
The electric power monitoring terminal 1 includes: current transformer and voltage transformer, further include respectively with the current transformer and
The signal conditioning circuit module of voltage transformer connection, the AD conversion chip connecting with the signal conditioning circuit module are also wrapped
Include the control chip connecting with the AD conversion chip；It further include the GPS module being connect with the control chip signal, clock core
Piece, key and GPRS module.
Preferably, the electric power monitoring terminal 1 further includes display screen, and the display screen and the control chip signal connect
It connects.
Preferably, the display screen is liquid crystal display.
Preferably, the electric power monitoring terminal 1 further includes memory module, the memory module and the control chip
Connection.
Preferably, the memory module is external flash storage.
Preferably, the control chip is STM32 chip.
Preferably, the AD conversion module is ADS8365 module.
In the above-described embodiments, the distribution network failure identification based on wide area measurement technology and positioning system are to work as distribution network
The failures such as middle appearance short circuit or broken string, feeder line, section where quickly judging using intelligence system, device realization, determine fault point
Function.It needs while meeting reliability and accuracy, it be the basis that distribution network failure is isolated, excludes, restoring electricity and
Premise.
To facilitate understanding of the present embodiment of the invention the distribution network failure identification and positioning based on wide area measurement technology provided
System is described in detail it below with reference to specific embodiment.
Based on wide area measurement technology distribution network failure identification and positioning system structure according to " unified planning, implement step by step,
The design and construction principle of technologically advanced, economical rationality "；
Electric power monitoring terminal 1 has local autonomous measurement and long-haul telemetry function, has automatic collection three-phase voltage, three-phase current
Signal, real-time perfoming power quality and frequency analysis operation, and optional wireless GPRS or wired ethernet communication mode will be electric
Energy quality and harmonic parameters are uploaded to host computer prepositive communication computer；
1 human-computer interaction interface of electric power monitoring terminal uses Chinese display, and system has the function of data backup and resume；
Electric power monitoring terminal 1 has wide area synchro measure mechanism and positioning function based on Beidou GPS module, can real-time Transmission
GPS positioning information is to master system；
Host computer prepositive communication computer has the function of TCP/IP communication, being capable of the progress wide area synchronization of remote control electric power acquisition terminal 1
Measurement, and distribution network failure identification and location algorithm are carried out to the parameters of electric power that reading terminals 1 periodically upload, finally analysis is tied
Fruit is stored in Database Systems, calls for distribution network failure identification with positioning system and shows with chart；
The identification of host computer distribution network failure has the function of database access with positioning system, can identify to distribution network failure and fixed
Position result carries out chart and shows, also has the function of generalized information system, the coordinate and failure letter of real-time display fault point on the electronic map
Breath.
The structure of electric power monitoring terminal 1 as shown in Fig. 2,
1) lead-in wire terminal detection and configuration requirement:
Enter 3 tunnel of line side (voltage, current transformer) input current, 3 tunnel of input voltage, totally 6 road signal.
Mutual inductor:
Three-phase current: being clamped using 5A/2.5mA high-precision current, and output is through difference conditioning circuit into ADS8365 sampling channel.
Three-phase voltage: being followed by voltage transformer (current mode) using electric resistance partial pressure, output through difference conditioning circuit into
ADS8365 sampling channel.
2) digital-to-analogue conversion
ADS8365 1,6 channels use (3 electric currents, 3 voltages), using 16 bit parallel data output modes.
3) human-computer interaction
Using 4 keys and 3.2 cun of color liquid crystals, human-computer interaction realizes that each system parameter settings, power quality and harmonic parameters are aobvious
The functions such as show.
4) GPS sync identification and positioning system
The data interaction with Beidou GPS module is realized using the USART2 serial ports of STM32.The PPS pulse per second (PPS) output end of GPS module
STM32 external interrupt is connect, realizes synchronous acquisition.GPS positioning information is saved into flash outside STM32.
5) GPRS wireless network communication module
The data interaction with GPRS module is realized using the USART1 serial ports of STM32.Realize 1 power quality of electric power monitoring terminal and
The upload of harmonic parameters and the reception of host computer prepositive communication computer control command.
6) RJ45 ethernet communication module
The data interaction with RJ45 ethernet communication module is realized using the USART3 serial ports of STM32.Realize electric power monitoring terminal 1
The upload of power quality and harmonic parameters and the reception of host computer prepositive communication computer control command.It can be logical with GPRS wireless network
Letter module selects to communicate using one of two ways with host computer front-end processor system in human-computer interaction interface.
7) memory module
Using external high capability flash memory, the store function to system parameter is realized.
Communication bridge of the monitoring center 2 as electric power monitoring terminal 1 and backstage efficiency analysis platform, software function are main
Including interface, TCP communication programming, resolve packet program, distribution network failure identification with location algorithm analysis program,
Database interface and concurrently access program etc..
Distribution network failure identification mainly includes main interface design, each monitoring point electricity with positioning system platform daemon software function
Can mass parameter chart display module, generalized information system fault identification and positioning result are shown, sampled data and power curve are shown,
Database interface and concurrently access program etc..
In the above-described embodiments, the distribution network failure identification based on wide area measurement technology and positioning system are to work as distribution network
The failures such as middle appearance short circuit or broken string, feeder line, section where quickly judging using intelligence system, device realization, determine fault point
Function.It needs while meeting reliability and accuracy, it be the basis that distribution network failure is isolated, excludes, restoring electricity and
Premise.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (7)
1. a kind of distribution network failure identification and positioning system based on wide area measurement technology characterized by comprising electric power monitoring
Terminal and the monitoring center communicated to connect with the electric power monitoring terminal；Wherein,
The electric power monitoring terminal includes: current transformer and voltage transformer, further include respectively with the current transformer and
The signal conditioning circuit module of voltage transformer connection, the AD conversion chip connecting with the signal conditioning circuit module are also wrapped
Include the control chip connecting with the AD conversion chip；It further include the GPS module being connect with the control chip signal, clock core
Piece, key and GPRS module.
2. the distribution network failure identification and positioning system, feature according to claim 1 based on wide area measurement technology exists
In the electric power monitoring terminal further includes display screen, and the display screen is connect with the control chip signal.
3. the distribution network failure identification and positioning system, feature according to claim 2 based on wide area measurement technology exists
In the display screen is liquid crystal display.
4. the distribution network failure identification and positioning system, feature according to claim 2 based on wide area measurement technology exists
In the electric power monitoring terminal further includes memory module, and the memory module is connect with the control chip.
5. the distribution network failure identification and positioning system, feature according to claim 4 based on wide area measurement technology exists
In the memory module is external flash storage.
6. the distribution network failure identification and positioning system, feature according to claim 1 based on wide area measurement technology exists
In the control chip is STM32 chip.
7. the distribution network failure identification and positioning system, feature according to claim 1 based on wide area measurement technology exists
In the AD conversion module is ADS8365 module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711469125.9A CN109991509A (en) | 2017-12-29 | 2017-12-29 | A kind of distribution network failure identification and positioning system based on wide area measurement technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711469125.9A CN109991509A (en) | 2017-12-29 | 2017-12-29 | A kind of distribution network failure identification and positioning system based on wide area measurement technology |
Publications (1)
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| CN109991509A true CN109991509A (en) | 2019-07-09 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204349582U (en) * | 2014-12-19 | 2015-05-20 | 国网山东诸城市供电公司 | A kind of power distribution network remote monitoring and managing system |
| CN204514997U (en) * | 2015-03-17 | 2015-07-29 | 湖南工程学院 | A kind of multifunction power system cloud gray model monitoring system |
| CN106771722A (en) * | 2016-11-30 | 2017-05-31 | 国网福建省电力有限公司 | Feeder line fault on-line monitoring system |
-
2017
- 2017-12-29 CN CN201711469125.9A patent/CN109991509A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204349582U (en) * | 2014-12-19 | 2015-05-20 | 国网山东诸城市供电公司 | A kind of power distribution network remote monitoring and managing system |
| CN204514997U (en) * | 2015-03-17 | 2015-07-29 | 湖南工程学院 | A kind of multifunction power system cloud gray model monitoring system |
| CN106771722A (en) * | 2016-11-30 | 2017-05-31 | 国网福建省电力有限公司 | Feeder line fault on-line monitoring system |
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Application publication date: 20190709 |
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