CN202383231U - Undercurrent singlephase earth fault comprehensive line selection system - Google Patents
Undercurrent singlephase earth fault comprehensive line selection system Download PDFInfo
- Publication number
- CN202383231U CN202383231U CN2011204647440U CN201120464744U CN202383231U CN 202383231 U CN202383231 U CN 202383231U CN 2011204647440 U CN2011204647440 U CN 2011204647440U CN 201120464744 U CN201120464744 U CN 201120464744U CN 202383231 U CN202383231 U CN 202383231U
- Authority
- CN
- China
- Prior art keywords
- line selection
- switching station
- earth fault
- undercurrent
- selection system
- 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
Images
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
Provided is an undercurrent singlephase earth fault comprehensive line selection system, comprising a background computer monitor and a line selection system which are arranged at the centralized control center, a plurality of undercurrent grounding line selection apparatuses installed to every switching station, and a communication network connected to the line selection apparatuses, wherein the undercurrent grounding line selection apparatus is in charge of the singlephase earth fault line section in the switching stations and uploads the line selection information to the background computer monitor the line selection system via the Ethernet; and the background computer monitor and the line selection system, based on the line selection information provided by the line selection apparatuses of every switching station after single-phase grounding, finds out the real grounding line according to the preset logic relation. The undercurrent singlephase earth fault comprehensive line selection system solves the problem of singlephase earth fault line selection of the mutually connected switching stations of the power distribution network system, decreases the power failure faults resulting from undercurrent grounding, improves the power supply reliability, and reduces the burden for personnel.
Description
Technical field
The utility model belongs to field of power, relates to the monitoring technical field of electric system low-voltage network, particularly the route selection of small current system line single phase grounding failure.
Background technology
China 35kV and following low-voltage network mostly adopt the neutral non-effective grounding mode, and this type of national regulation electrical network must be installed Small Electric Current Earthing And Routing Device, to solve the single-phase earth fault line selection problem, guarantee the reliability of power supply.
At present, small current earthing wire-selecting equipment is used commonplace in transformer station or switching station, can solve the single-phase earth fault line selection problem of single transformer station or switching station more effectively.But along with the expansion of power distribution network scale, being separated by links together through interconnection between a plurality of transformer stations far away or the switching station, each other as subsequent use, to improve power supply reliability.In such system; When more arbitrarily singlephase earth fault taking place, total system all can get into malfunction, all can sense residual voltage; In the system each line selection apparatus all can start and provide a route selection result, is unique correct and in fact should have only a route selection result.Because each line selection apparatus is independent fully, the operations staff can't judge whether that at all our station takes place by ground connection, can only be through the experience investigation, to waste time and energy and unreliable, and influence is produced.
The utility model content
In order to address the above problem, the utility model provides a kind of little electric current singlephase earth fault comprehensive wire selection system, and it can solve a single-phase earth fault line selection difficult problem between a plurality of transformer stations that distribution network system gets in touch with each other or the switching station.
The utility model achieves the above object through following technical scheme: the comprehensive wire selection system of a kind of little electric current singlephase earth fault; Form by the background computer monitoring that is installed on collection control center and wire selection system and many Small Electric Current Earthing And Routing Devices that are installed on each switching station and the communication network that is connected them; Said Small Electric Current Earthing And Routing Device is responsible for belonging to the single-phase earth fault line selection of switching station, and route selection information is uploaded to background computer monitoring and wire selection system through Ethernet; Monitoring of said background computer and wire selection system in the route selection information that takes place to provide behind the single-phase earthing, by the logical relation of setting in advance, are found out real ground path according to the line selection apparatus of each switching station.
The realization of said background computer monitoring and wire selection system mainly comprises three aspects:
1), sets up the superior and the subordinate's logical relation of getting in touch with each other between each switching station according to actual electric main wiring diagram;
2) be installed on the route selection object information of the line selection apparatus of each switching station through the communication network collection;
3) carry out analysis and judgement according to the logical relation, the route selection result that set, find out real ground path.
Logical relation between switching station comprises three kinds:
1) each line selection apparatus only is responsible for the our station route selection, when the our station circuit takes place by ground connection, installs this line-to-ground of newspaper, and interconnection ground connection is reported in non-our station line-to-ground without exception, and not distinguishing is interconnection or other switching station ground connection;
2) when subordinate's switching station generation line-to-ground, higher level's switching station route selection result can report the contact network ground connection between the superior and the subordinate's switching station;
3) when interconnection took place by ground connection, the superior and the subordinate's switching station was all reported interconnection ground connection;
After the detailed description in conjunction with advantages the utility model embodiment, the utility model is had clearer understanding.
Description of drawings
Fig. 1 is the background monitoring and the wire selection system software flow pattern of the utility model;
Fig. 2 is the concrete application case of the utility model;
Embodiment
Below in conjunction with accompanying drawing and embodiment the technical scheme of the utility model is further specified.
Accompanying drawing 1 has provided background monitoring and the wire selection system software flow pattern of embodiment: at first start native system, carry out the memory bank initialization after, the little current flow devices that system is relevant with all is set up communication; Monitor the ground state of little current flow devices in real time by communication module,, then start analysis module in case there is ground signalling to take place; Get into logic analysis; Differentiate the type and the corresponding device of ground path, and according to the mutual logical message of setting, the interactional pacing items of establishment system; Thereby draw correct result, and on main wiring diagram, indicate with articulating.Its determination strategy is following:
When (1) having only a terminated line newspaper ground connection, obtain a result this line-to-ground; If 2 terminated line newspaper ground connection are arranged, and through interconnection search relevant device, if relevant device is not quoted interconnection ground connection, this circuit is not genuine ground connection so;
(2) if busbar grounding (bus connection switch branch) is divided into 2 parts to system, each system's separate analysis;
(3) if busbar grounding (bus connection switch closes), 2 sections buses are only used a little current flow devices, directly obtain a result busbar grounding;
(4) if busbar grounding, and 2 sections buses each with a little current flow devices, (bus connection switch closes) through judging the busbar grounding state of association,, obtained a result busbar grounding if related bus is also reported ground connection;
(5) if two table apparatus are quoted same line-to-ground, directly obtain a result this line ground connection.
Embodiment:
Fig. 2 has provided system architecture and the logical relation of embodiment; System is made up of 8 switching stations; Be respectively: switching station 1, switching station 2, switching station 3, switching station 4, switching station 5, switching station 6, switching station 7, switching station 4 buses 1 are respectively installed 1 little current flow devices with bus 2, and a little current flow devices is only installed by remaining each electric substation; Mainly by switching station 1 and switching station 7 power supplies, the communication relationship between them is following for total system:
(1) 1 one sections buses of switching station are set up communication relationship through 5101 circuits of circuit 5F15 and 2 one sections buses of switching station; 5201 circuits through circuit 5F11 and 3 one sections buses of switching station are set up communication relationship; 5300 circuits of zero section bus through circuit 5F13 and switching station 4 are set up communication relationship; 8F11 circuit through circuit 5F12 and 5 one sections buses of switching station is set up communication relationship; 8001 circuits through circuit 5F21 and 7 four sections buses of switching station are set up communication relationship;
(2) 1 two sections buses of switching station are set up communication relationship through 5102 circuits of circuit 5F26 and 2 two sections buses of switching station; 5202 circuits through circuit 5F221 and 3 two sections buses of switching station are set up communication relationship; 8F21 circuit through circuit 5F21 and 5 one sections buses of switching station is set up communication relationship;
(3) the 8F14 circuit of 5100 circuits of 2 zero sections buses of switching station and 5 one sections buses of switching station is set up communication relationship;
(4) the 8F23 circuit of 5200 circuits of 3 zero sections buses of switching station and 5 one sections buses of switching station is set up communication relationship;
(5) the 8F12 circuit of 5301 circuits of 4 one sections buses of switching station and 5 one sections buses of switching station is set up communication relationship; The 8F22 circuit of 5302 circuits of 4 two sections buses of switching station and 5 one sections buses of switching station is set up communication relationship;
(6) 5305 of 5401 circuits of 6 one sections buses of switching station and 4 one sections buses of switching station set up communication relationship; 5306 of one section bus of 5402 circuits of 6 two sections buses of switching station and gasification switching station is set up communication relationship;
(7) 8101 of 8F 13 circuits of 5 one sections buses of switching station and 7 one sections buses of switching station set up communication relationship; 8201 of the 8F25 circuit of 5 two sections buses of switching station and 7 two sections buses of switching station are set up communication relationship; 8301 of the 8F15 circuit of 5 one sections buses of switching station and 7 three sections buses of switching station are set up communication relationship.
Claims (1)
1. the comprehensive wire selection system of little electric current singlephase earth fault; It is characterized in that; This system is made up of the background computer monitoring that is installed on collection control center and wire selection system and many Small Electric Current Earthing And Routing Devices that are installed on each switching station and the communication network that is connected them
Said Small Electric Current Earthing And Routing Device is responsible for belonging to the single-phase earth fault line selection of switching station, and route selection information is uploaded to background computer monitoring and wire selection system through Ethernet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204647440U CN202383231U (en) | 2011-11-21 | 2011-11-21 | Undercurrent singlephase earth fault comprehensive line selection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204647440U CN202383231U (en) | 2011-11-21 | 2011-11-21 | Undercurrent singlephase earth fault comprehensive line selection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202383231U true CN202383231U (en) | 2012-08-15 |
Family
ID=46631724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204647440U Expired - Fee Related CN202383231U (en) | 2011-11-21 | 2011-11-21 | Undercurrent singlephase earth fault comprehensive line selection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202383231U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154106A (en) * | 2015-04-14 | 2016-11-23 | 济南置真电气有限公司 | Layering cascade system failure line selection logic decision method based on route selection result |
| CN107356840A (en) * | 2017-07-01 | 2017-11-17 | 合肥东玖电气有限公司 | One kind is used for earth fault Small Electric Current Earthing And Routing Device |
| CN108181540A (en) * | 2017-12-29 | 2018-06-19 | 广东电网有限责任公司韶关供电局 | A kind of line fault lookup method |
| CN110146766A (en) * | 2018-11-16 | 2019-08-20 | 国网江苏省电力有限公司盐城供电分公司 | The processing method of single-phase earthing signal in a kind of Loop Closing Operation |
-
2011
- 2011-11-21 CN CN2011204647440U patent/CN202383231U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154106A (en) * | 2015-04-14 | 2016-11-23 | 济南置真电气有限公司 | Layering cascade system failure line selection logic decision method based on route selection result |
| CN106154106B (en) * | 2015-04-14 | 2020-06-09 | 济南置真电气有限公司 | Hierarchical cascade system fault line selection logic judgment method based on line selection result |
| CN107356840A (en) * | 2017-07-01 | 2017-11-17 | 合肥东玖电气有限公司 | One kind is used for earth fault Small Electric Current Earthing And Routing Device |
| CN108181540A (en) * | 2017-12-29 | 2018-06-19 | 广东电网有限责任公司韶关供电局 | A kind of line fault lookup method |
| CN110146766A (en) * | 2018-11-16 | 2019-08-20 | 国网江苏省电力有限公司盐城供电分公司 | The processing method of single-phase earthing signal in a kind of Loop Closing Operation |
| CN110146766B (en) * | 2018-11-16 | 2021-09-03 | 国网江苏省电力有限公司盐城供电分公司 | Method for processing single-phase grounding signal in closed-loop operation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102684175B (en) | A kind of implementation method of micro-capacitance sensor protection | |
| CN105576660B (en) | Local distribution network in-circuit emulation analytical equipment and system | |
| CN102788933A (en) | Method for utilizing automatic switch-out controller to search power grid low-current single-phase ground fault | |
| CN202383231U (en) | Undercurrent singlephase earth fault comprehensive line selection system | |
| CN103199512B (en) | Power distribution network single-phase earth fault network reconstruction method | |
| CN104898018B (en) | One-phase earthing failure in electric distribution network tries to draw Detection ＆ Controling device automatically | |
| CN204668942U (en) | There is the distribution network structure pattern of high reliability | |
| CN105375465A (en) | City center area power distribution network and load transfer method | |
| CN103855810B (en) | A kind of stable system of the spontaneous recovery for 110 kv substations | |
| CN104778632A (en) | Intelligent decision making aiding method and system for transfer power supply | |
| Wan et al. | Multi-agent application in protection coordination of power system with distributed generations | |
| CN110120664A (en) | A kind of reliable urban power distribution network grid structure of intelligence | |
| WO2023005201A1 (en) | Distributed electrical monitoring management system for intelligent power plant | |
| CN102983627B (en) | Transition method of intellectualized monitoring system modification process of conventional transformer substation | |
| CN103855722A (en) | Micro-grid connection device | |
| CN106356905A (en) | Alternating-current and direct-current double-bus controllable power transmission system | |
| CN206023211U (en) | A kind of little bar coupler blocking device of direct current | |
| CN104035003A (en) | Single-segmented-bus parallel-PT logic judgment method for selecting line with small grounding current | |
| CN206671470U (en) | A kind of ring main unit on-line monitoring system | |
| CN205863765U (en) | Double bus scheme structure based on disconnecting switch segmentation in GIS power distribution equipment | |
| CN202330619U (en) | Novel intelligent low-current grounded line selection device | |
| CN103607053A (en) | Intelligent switching room system of three-layer structure | |
| CN204156604U (en) | A kind of Multifunctional power distribution automatization terminal | |
| CN211089136U (en) | 6kV house service power interconnection device | |
| CN203774631U (en) | High-voltage distribution device with dual circuit breakers in single bus sectionalizing mode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20120815 Termination date: 20161121 |