CN208369312U - The distributed DTU terminal of accurate detection singlephase earth fault - Google Patents
The distributed DTU terminal of accurate detection singlephase earth fault Download PDFInfo
- Publication number
- CN208369312U CN208369312U CN201820754831.1U CN201820754831U CN208369312U CN 208369312 U CN208369312 U CN 208369312U CN 201820754831 U CN201820754831 U CN 201820754831U CN 208369312 U CN208369312 U CN 208369312U
- Authority
- CN
- China
- Prior art keywords
- shell
- voltage
- data
- antenna
- zero sequence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/40—Display of information, e.g. of data or controls
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses a kind of accurate distributed DTU terminal of detection singlephase earth fault, the utility model overcomes traditional DTU equipment and shows without data and the problem of look facility.The utility model includes the shell of DTU terminal, the main control chip of diagnosable ground fault is equipped in shell, main control chip is connected with serial port module, shell is externally provided with the voltage detector for detecting the phase voltage in three-phase circuit, the zero sequence voltage detection device for detecting residual voltage is additionally provided with outside shell, surface of shell is equipped with the No.1 antenna for data transmission, No. two antennas for being used for transmission voltage data are designed on voltage detector and zero sequence voltage detection device, antenna is connected with the communication module for converting transmission data, surface of shell is equipped with the display screen for showing data information.The utility model has many advantages, such as long service life, can be simple and easy to use with real time inspection data, structure.
Description
Technical field
The utility model relates to a kind of DTU terminals, more specifically to a kind of point of accurate detection singlephase earth fault
Cloth DTU terminal.
Background technique
With the rapid development of distribution automation system, important component quilt of the DTU data transmission unit as system
It is a large amount of to use.In distribution automation, telemetering, remote control and the remote signalling data that the main acquisition terminal equipment of DTU detects, and meanwhile it is right
These initial data carry out corresponding calculation processing, obtain the data that we want.DTU has bidirectional data transmission function, energy
Enough receive terminal server issues data, parses order therein, completes corresponding function, while can be by collected end
End equipment data are sent to background server, complete remote terminal equipment data acquisition function.
Original DTU equipment mainly completes terminal data transmission function, does not have data look facility, user in equipment
It cannot can not inquire and currently adopt by current DTU equipment query current system configuration which remote signalling, telemetering and remote control etc.
These data values collected.This mode has following defect: lacking data display function, user on the terminal device cannot
Easily check data, when grid breaks down, background server can not receive the data of DTU transmission, and user will
The collected data of terminal device can not be viewed；It is unfavorable for system maintenance and troubleshooting, when system breaks down, system
Maintenance personnel cannot check current collected data by DTU, analyze the exception of wherein data, search the original that failure occurs
Cause；It is unfavorable for DTU to interact with user and data configuration, is unfavorable for DTU equipment during the installation process, checks its working condition.
Utility model content
The utility model shows and checks function to overcome traditional DTU equipment existing in the prior art not have data
The problem of energy, now providing to have can allow one kind of the collected data function of user's real time inspection is accurate to detect single-phase earthing
The distributed DTU terminal of failure.
The distributed DTU terminal of the accurate detection singlephase earth fault of one kind of the utility model, the shell including DTU terminal
Body, the interior main control chip for being equipped with diagnosable ground fault of the shell, the main control chip are connected with serial port module, institute
The shell stated is externally provided with the voltage detector for detecting the phase voltage in three-phase circuit, is additionally provided with outside the shell for examining
The zero sequence voltage detection device of residual voltage is surveyed, the surface of shell is equipped with the No.1 antenna for data transmission, the electricity
Be designed with No. two antennas for being used for transmission voltage data on pressure detector and zero sequence voltage detection device, the antenna with for turning
The communication module for changing transmission data is connected, and the surface of shell is equipped with the display screen for showing data information, described
Be equipped with key below display screen, the No.1 antenna, No. two antennas, communication module, display screen and key respectively with master control core
Piece is connected.Using No.1 antenna and No. two antennas, can allow voltage detector and zero sequence voltage detection device and main control chip into
Row wireless telecommunications, the design can limit more problem to avoid traditional wire transmission.The display screen can allow use
Collected data on person's real time inspection voltage detector and zero sequence voltage detection device, easily.
In use, user first will use the upper limit that key sets each bus in voltage electric power system into main control chip
Voltage threshold, lower threshold voltage.The voltage detector can detect the phase voltage on three buses, the zero sequence simultaneously
Voltage detector can detect the residual voltage on the zero curve in three-phase circuit.
When residual voltage is not present in examined bus, if the wherein two-phase phase voltage of the examined bus is higher than on described
Voltage limit threshold value, a remaining phase phase voltage are lower than the lower threshold voltage, then determine the examined bus to connect there are single-phase
The earth bus of earth fault, phase voltage are mutually Earth Phase lower than lower threshold voltage.
When examined bus is there are when residual voltage, if the residual voltage of the examined bus is higher than the upper limit voltage threshold
Value, also, the wherein two-phase phase voltage of the examined bus is higher than the upper limit voltage threshold value, and a remaining phase phase voltage is lower than institute
Lower threshold voltage is stated, then determines the examined bus for there are the earth bus of singlephase earth fault, under phase voltage is lower than
Voltage limit threshold value is mutually Earth Phase.
Preferably, the voltage detector front end is connected with the No.1 protective resistance for protecting voltage detector,
The zero sequence voltage detection device front end is connected with No. two protective resistances for protecting zero sequence voltage detection device.It is protected using No.1
Shield resistance and No. two protective resistances can be effectively protected voltage detector and zero sequence voltage detection device, to extend voltage detecting
The service life of device and zero sequence voltage detection device.
Preferably, the shell is rectangle, the shell two sides are designed with circular arc of the center of circle outside shell, institute
The circular arc stated is equipped with the cushion for absorbing pressure between finger and shell, and the cushion surface is equipped with for increasing
The striped of coefficient of friction.The cushion can effectively absorb pressure between finger and shell, to effectively extend shell
The service life of body.User can be allowed more steadily to take the utility model using striped, to reduce this
The probability that utility model slides.
Preferably, being all cased with outside the No.1 antenna and No. two antennas for protecting No.1 antenna and No. two antennas
Rubber sleeve.The rubber sleeve can be effectively protected No.1 antenna and No. two antennas, to extend No.1 antenna and No. two days
The service life of line.
The utility model has the following beneficial effects: long service life, it can be with real time inspection data, structure is simple, uses
It is convenient.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the utility model.
Attached drawing 2 is the system schematic of the utility model.
Attached drawing 3 is the connection schematic diagram of the utility model.
Attached drawing 4 is the cross-sectional view of the No.1 antenna of the utility model.
Shell 1, main control chip 2, serial port module 3, voltage detector 4, zero sequence voltage detection device 5, No.1 antenna 6, No. two
Antenna 7, communication module 8, display screen 9, key 10, No.1 protective resistance 11, No. two protective resistances 12, circular arc 13, cushion 14,
Striped 15, rubber sleeve 16.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment: the utility model is further described in 1, attached drawing 2, attached drawing 3 and attached drawing 4 with reference to the accompanying drawings, this example
A kind of distributed DTU terminal of accurate detection singlephase earth fault, the shell 1 including DTU terminal, the shell 1 is in rectangular
Shape, 1 two sides of shell are designed with circular arc 13 of the center of circle outside shell 1, and the circular arc 13 is equipped with for absorbing finger
The cushion 14 of pressure between shell 1,14 surface of cushion are equipped with the striped 15 for increasing coefficient of friction.
The main control chip 2 of diagnosable ground fault, the main control chip 2 and serial port module 3 are equipped in the shell 1
It is connected, the shell 1 is externally provided with the voltage detector 4 for detecting the phase voltage in three-phase circuit, outside the shell 1
It is additionally provided with the zero sequence voltage detection device 5 for detecting residual voltage, 4 front end of voltage detector is connected with for protecting electricity
The No.1 protective resistance 11 of detector 4 is pressed, 5 front end of zero sequence voltage detection device is connected with for protecting zero sequence voltage detection
No. two protective resistances 12 of device 5.
1 surface of shell is equipped with the No.1 antenna 6 for data transmission, the voltage detector 4 and zero sequence electricity
It is designed with No. two antennas 7 for being used for transmission voltage data on pressure detector 5, is all covered outside the No.1 antenna 6 and No. two antennas 7
There is the rubber sleeve 16 for protecting No.1 antenna 6 and No. two antennas 7.
The No.1 antenna 6 is connected with the communication module 8 for converting transmission data, and 1 surface of shell is set
There is the display screen 9 for showing data information, is equipped with key 10, the No.1 antenna 6, two below the display screen 9
Antenna 7, communication module 8, display screen 9 and key 10 are connected with main control chip 2 respectively.
The foregoing is merely the structure features of specific embodiment of the utility model, but the utility model to be not limited to
This, in the field of the utility model, made changes or modifications all cover practical new at this any those skilled in the art
Among the scope of the patents of type.
Claims (4)
1. a kind of distributed DTU terminal of accurate detection singlephase earth fault, the shell (1) including DTU terminal, characterized in that
It is equipped with the main control chip (2) of diagnosable ground fault in the shell (1), the main control chip (2) and serial port module (3)
It is connected, the shell (1) is externally provided with the voltage detector (4) for detecting the phase voltage in three-phase circuit, the shell
The zero sequence voltage detection device (5) for detecting residual voltage is additionally provided with outside body (1), the shell (1) surface is equipped with for counting
According to the No.1 antenna (6) of transmission, it is designed on the voltage detector (4) and zero sequence voltage detection device (5) and is used for transmission electricity
No. two antennas (7) of data are pressed, the No.1 antenna (6) is connected with the communication module (8) for converting transmission data, institute
Shell (1) surface stated is equipped with the display screen (9) for showing data information, is equipped with key below the display screen (9)
(10), the No.1 antenna (6), No. two antennas (7), communication module (8), display screen (9) and key (10) respectively with master control
Chip (2) is connected.
2. a kind of distributed DTU terminal of accurate detection singlephase earth fault according to claim 1, characterized in that institute
Voltage detector (4) front end stated is connected with the No.1 protective resistance (11) for protecting voltage detector (4), the zero sequence
Voltage detector (5) front end is connected with No. two protective resistances (12) for protecting zero sequence voltage detection device (5).
3. a kind of distributed DTU terminal of accurate detection singlephase earth fault according to claim 1, characterized in that institute
The shell (1) stated is rectangle, and the shell (1) two sides are designed with the circular arc (13) of the center of circle outside in shell (1), the circle
Arc (13) is equipped with the cushion (14) for absorbing pressure between finger and shell (1), and the cushion (14) surface is set
There is the striped (15) for increasing coefficient of friction.
4. a kind of distributed DTU terminal of accurate detection singlephase earth fault according to claim 1, characterized in that institute
The No.1 antenna (6) and No. two antennas (7) stated all are cased with the rubber sleeve for protecting No.1 antenna (6) and No. two antennas (7) outside
(16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820754831.1U CN208369312U (en) | 2018-05-21 | 2018-05-21 | The distributed DTU terminal of accurate detection singlephase earth fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820754831.1U CN208369312U (en) | 2018-05-21 | 2018-05-21 | The distributed DTU terminal of accurate detection singlephase earth fault |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208369312U true CN208369312U (en) | 2019-01-11 |
Family
ID=64935365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820754831.1U Expired - Fee Related CN208369312U (en) | 2018-05-21 | 2018-05-21 | The distributed DTU terminal of accurate detection singlephase earth fault |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208369312U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030634A (en) * | 2021-01-27 | 2021-06-25 | 国网浙江杭州市萧山区供电有限公司 | Ground fault positioning method based on network unit host |
-
2018
- 2018-05-21 CN CN201820754831.1U patent/CN208369312U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030634A (en) * | 2021-01-27 | 2021-06-25 | 国网浙江杭州市萧山区供电有限公司 | Ground fault positioning method based on network unit host |
| CN113030634B (en) * | 2021-01-27 | 2023-12-29 | 国网浙江杭州市萧山区供电有限公司 | Ground fault positioning method based on network unit host |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107328969B (en) | A kind of electric energy meter of measurable residual current | |
| CN109599941A (en) | A kind of distribute-electricity transformer district perception terminal device and method | |
| CN105527499A (en) | Grounding resistance detection and analysis system with automatic alarm function | |
| CN204495898U (en) | A kind of transformer superpotential on-line monitoring system | |
| CN105652098A (en) | Ground resistance detection and analysis system adopting solar energy to supply power | |
| CN208369312U (en) | The distributed DTU terminal of accurate detection singlephase earth fault | |
| CN207851142U (en) | A kind of acquisition of power information is long-range and local communication device | |
| CN203149066U (en) | Distributed on-line insulation monitoring device for electrical network operation equipment | |
| CN206657046U (en) | A kind of wireless high-voltage electriferous display device | |
| CN203086106U (en) | Low-voltage electric shock security apparatus | |
| CN202676819U (en) | Voltage testing switching equipment for multi-core cable | |
| CN107390017A (en) | A kind of power information gathers long-range and local communication device | |
| CN205539154U (en) | High voltage electrified display locking apparatus | |
| CN103245836B (en) | There is the intelligent megohmmeter of automatic discharging function | |
| CN207149071U (en) | Circuit for low-voltage centralized meter reading local detection of electric power and handheld terminal equipment | |
| CN206292339U (en) | A kind of fuse switch monitoring device based on image recognition | |
| CN105629075A (en) | Grounding resistance detection system with automatic detection function | |
| CN207166138U (en) | A kind of subway station distribution system | |
| CN201917627U (en) | Portable direct-current grounding fault searching instrument | |
| CN206759040U (en) | A kind of new wind-light storage low pressure microgrid group's protection coordination controller | |
| CN105629056A (en) | Use method of two-mode watt-hour meter | |
| CN102237714A (en) | Multipath residual current monitoring/protecting device with wireless or carrier transmission module | |
| CN111077405A (en) | Power distribution network detection device | |
| CN113325235B (en) | Asynchronous phase checking system and method based on same reference frequency | |
| CN109459661A (en) | A kind of distribution network failure automatic isolation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190111 Termination date: 20190521 |