CN207117169U - Power distribution automation Feeder Terminal Unit for 10KV overhead line fault detects - Google Patents
Power distribution automation Feeder Terminal Unit for 10KV overhead line fault detects Download PDFInfo
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- CN207117169U CN207117169U CN201721129934.0U CN201721129934U CN207117169U CN 207117169 U CN207117169 U CN 207117169U CN 201721129934 U CN201721129934 U CN 201721129934U CN 207117169 U CN207117169 U CN 207117169U
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- 238000009826 distribution Methods 0.000 title claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000004224 protection Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000018199 S phase Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009131 signaling function Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
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- 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
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
It the utility model is related to the power distribution automation Feeder Terminal Unit for 10KV overhead line fault detects, distribution line including connection transformer station and user, demarcation switch is provided with the junction of the user and the distribution line, phase fault and singlephase earth fault can be distinguished and control trip switch to act.This practicality in demarcation switch newly by setting the built-in current transformer of Integral three-phase generally to gather each phase current and zero-sequence current, built-in voltage transformer is set to gather supply side voltage signal, master controller can judge overhead transmission line fault type according to the collection signal of built-in current transformer, built-in voltage transformer, and handled in time, ensure that overhead transmission line is safe for operation, it is ensured that the Electrical Safety of non-faulting user.
Description
Technical field
10kV overhead distribution fault detection techniques are the utility model is related to, are examined in particular for 10KV overhead lines failure
The power distribution automation Feeder Terminal Unit of survey.
Background technology
When being broken down inside the user that 10kV overhead distributions T connects, existing troubleshooting equipment can not be distinguished effectively
Overhead transmission line phase fault and singlephase earth fault, as failure at it enters line segment, though or failure occur to open in subscriber's drop
Side but its protection act time limit and transformer station's outlet switch protection cooperation not at that time, can cause transformer station's outlet switch to protect inside the Pass
Shield tripping operation.If nature of trouble is permanent, transformer station's unsuccessful reclosing, then the accident in Middle Voltage circle will make whole piece
Distribution line has a power failure, and this accident that involves is very common in power distribution network, and it is severe to influence comparison.
Utility model content
The power distribution automation Feeder Terminal Unit for 10KV overhead line fault detects is the utility model is related to, for area's phase
Between short trouble and singlephase earth fault and handled in time, ensure that overhead transmission line is safe for operation.
In order to solve the above problems, the power distribution automation provided by the utility model for 10KV overhead line fault detects is presented
Line terminal equipment, including the distribution line of connection transformer station and user, set in the user and the junction of the distribution line
There is a demarcation switch, the demarcation switch is included being connected with the distribution line to detect the binding post of primary current, described point
The built-in current transformer being connected with the binding post is provided with boundary's switch, the built-in current transformer is Integral three-phase
Current transformer；The binding post is also associated with built-in voltage transformer to gather supply side voltage signal, described built-in
Current transformer, the built-in voltage transformer are connected with master controller, and the master controller is also associated with trip switch；Institute
State A phase currents, B phase currents, C phase currents, zero-sequence current that master controller gathers according to the built-in current transformer and described
The supply side voltage signal of built-in voltage transformer collection and the on off state of trip switch distinguish phase fault and single-phase
Earth fault simultaneously controls the trip switch to act.
Power distribution automation Feeder Terminal Unit provided by the utility model for 10KV overhead line fault detects also has
Following technical characteristic：
Further, the master controller is also associated with GSM transport modules or GPRS transmission module, and the master controller leads to
Cross A phase currents, B phase currents that the GSM transport modules or the GPRS transmission module gather the built-in current transformer,
The supply side voltage signal of C phase currents, zero-sequence current and built-in voltage transformer collection is sent to remote server.
The utility model has the advantages that：By setting the built-in current of Integral three-phase mutual in demarcation switch
Sensor can generally gather each phase current and zero-sequence current, set built-in voltage transformer to gather supply side voltage signal, main
Controller can judge overhead transmission line fault type according to the collection signal of built-in current transformer, built-in voltage transformer, and and
Shi Jinhang processing, ensure that overhead transmission line is safe for operation, it is ensured that the Electrical Safety of non-faulting user.
Brief description of the drawings
Fig. 1 is the schematic view of the mounting position of the power distribution automation Feeder Terminal Unit of the utility model embodiment；
Fig. 2 is the structural representation of the power distribution automation Feeder Terminal Unit of the utility model embodiment.
Embodiment
Describe the utility model in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not rushing
In the case of prominent, the feature in embodiment and embodiment in the utility model can be mutually combined.
The power distribution automation feeder line of the present utility model for 10KV overhead line fault detects as shown in Figure 1 to Figure 2 is whole
In one embodiment of end equipment, the power distribution automation Feeder Terminal Unit for being used for 10KV overhead line fault detects includes connection
Transformer station 10 and the distribution line of user 20, demarcation switch 30 is provided with the junction of user 20 and the distribution line, is demarcated
Switch 30 includes with the distribution line being connected to detect the binding post of primary current, is provided with demarcation switch 30 and is connect with described
The connected built-in current transformer 31 of line terminals, built-in current transformer 31 are the current transformer of Integral three-phase；It is described to connect
Line terminals are also associated with built-in voltage transformer 32 to gather supply side voltage signal, built-in current transformer 31, built-in voltage
Transformer 32 is connected with master controller 33, and master controller 33 is also associated with trip switch 34；Master controller 33 is according to in-built electrical
The power supply that A phase currents, B phase currents, C phase currents, zero-sequence current and the built-in voltage transformer 32 that current transformer 31 gathers gather
The on off state of side voltage signal and trip switch 34 distinguishes phase fault and singlephase earth fault and controls trip switch
34 actions.Power distribution automation Feeder Terminal Unit in the embodiment, by being set in demarcation switch in Integral three-phase
Each phase current and zero-sequence current can generally be gathered by putting current transformer, set built-in voltage transformer to gather supply side voltage
Signal, master controller can judge overhead transmission line failure classes according to the collection signal of built-in current transformer, built-in voltage transformer
Type, and handled in time, ensure that overhead transmission line is safe for operation, it is ensured that the Electrical Safety of non-faulting user.
In the above-described embodiments, for 10KV overhead line fault detects power distribution automation Feeder Terminal Unit also have with
Lower technical characteristic：Master controller 33 is also associated with GSM transport modules or GPRS transmission module, and master controller 33 passes through the GSM
A phase currents that transport module or the GPRS transmission module gather built-in current transformer 31, B phase currents, C phase currents, zero
The supply side voltage signal that sequence electric current and built-in voltage transformer 32 gather is sent to remote server.
In the above-described embodiments, when phase fault occurs for overhead distribution, master controller passes through built in detection
Each phase current of current transformer collection, by three-phase current and definite value relatively come the generation of failure judgement, when more than definite value, standing
Trip Fault Isolation to fall, do not influence the power supply in non-faulting region, even if due to the selective problems of definite value, some failures are made
Into the also tripping operation of transformer station's outlet switch, but after transformer station's coincidence, trouble point has been isolated, and non-faulting region can be very
Restore electricity soon.Specifically, three sections of specified time overcurrent protections (I section of excessively stream, II section of excessively stream and overload), each section of electricity can be set
Stream and time definite value can be adjusted independently, set the throwing for adjusting control word control three section protection to move back respectively, overload can select to jump
Lock or alarm.Preferably, one section of accelerating sections current protection can be specially set, put into 3 seconds after hand conjunction or reclosing, rather than choosing
I section, II section of acceleration is selected, can be thrown and moved back by control word, the electric current of accelerating sections and time can independently adjust.Sent out in overhead distribution
During raw singlephase earth fault, demarcation switch can gather zero-sequence current by built-in current transformer, pass through zero-sequence current and setting
The comparison of value is distinguished and judges in user circle singlephase earth fault and out-of-bounds singlephase earth fault；For user out-of-bounds single-phase
Earth fault, because zero-sequence current is much smaller than the zero-sequence current in user circle during generation singlephase earth fault, therefore, pass through setting
Appropriate definite value can make accurate judgement.Ground protection can select band direction or without direction, can when having a residual voltage
With selection band direction, it can select to trip as the case may be or alert.
Power distribution automation Feeder Terminal Unit in the above-described embodiments can also have reclosing function, have maximum four times
Reclosing, each throwing, which is moved back, individually to be controlled, and each delay can be adjusted independently.Can throw move back combined floodgate after acceleration function.Also have
There is the communication function of GPRS or short message mode, GPRS modes or short message mode and monitoring system can be sampled by cell phone network
Communication, realizes long-range collection and control.Such as collection electric current, on off state etc., Remote tripping operation, close a floodgate, using short message
During mode, the short message of Chinese and two kinds of forms of character can be sent out, two kinds of forms can automatically switch, and can also select using special logical
Road, such as optical-fibre channel.The power distribution automation Feeder Terminal Unit also has remote control, remote measurement, remote signaling function, remote-controlled tripping operation behaviour
Make, remote control closing operation.Also there is PT monitoring functions, by ad hoc PT real time monitoring function, be less than threshold in electric current, voltage
(the 60% of rated voltage) is judged as PT exceptions during value, sends item SMS notification immediately.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (2)
1. match somebody with somebody for the power distribution automation Feeder Terminal Unit of 10KV overhead line fault detects, including connection transformer station and user
Electric line, it is characterised in that be provided with demarcation switch, the demarcation switch bag in the junction of the user and the distribution line
Include and be connected with the distribution line to detect the binding post of primary current, be provided with and the binding post in the demarcation switch
Connected built-in current transformer, the built-in current transformer are the current transformer of Integral three-phase；The binding post
Built-in voltage transformer is also associated with to gather supply side voltage signal, the built-in current transformer, the built-in voltage are mutual
Sensor is connected with master controller, and the master controller is also associated with trip switch；The master controller is according to the in-built electrical
A phase currents, B phase currents, C phase currents, zero-sequence current and the power supply of built-in voltage transformer collection of current transformer collection
The on off state of side voltage signal and trip switch distinguishes phase fault and singlephase earth fault and controls the tripping operation to open
Pass acts.
2. power distribution automation Feeder Terminal Unit according to claim 1, it is characterised in that the master controller is also connected with
There are GSM transport modules or GPRS transmission module, the master controller passes through the GSM transport modules or the GPRS transmission module
A phase currents, B phase currents, C phase currents, zero-sequence current and the built-in voltage mutual inductance that the built-in current transformer is gathered
The supply side voltage signal of device collection is sent to remote server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721129934.0U CN207117169U (en) | 2017-09-05 | 2017-09-05 | Power distribution automation Feeder Terminal Unit for 10KV overhead line fault detects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721129934.0U CN207117169U (en) | 2017-09-05 | 2017-09-05 | Power distribution automation Feeder Terminal Unit for 10KV overhead line fault detects |
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| Publication Number | Publication Date |
|---|---|
| CN207117169U true CN207117169U (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721129934.0U Active CN207117169U (en) | 2017-09-05 | 2017-09-05 | Power distribution automation Feeder Terminal Unit for 10KV overhead line fault detects |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281945A (en) * | 2018-04-12 | 2018-07-13 | 天津浩源慧能科技有限公司 | It is a kind of based on the singlephase earth fault shielding system and partition method of applying signal outside |
| CN109164736A (en) * | 2018-08-31 | 2019-01-08 | 保定云木电力科技有限公司 | switch controller |
| CN109444790A (en) * | 2018-10-29 | 2019-03-08 | 广西电网有限责任公司电力科学研究院 | A method of supply voltage mutual inductor working condition is identified suitable for line feed terminals |
| CN110401177A (en) * | 2019-06-26 | 2019-11-01 | 长安大学 | A 10KV line protection device and its application method |
| CN111142059A (en) * | 2019-07-08 | 2020-05-12 | 郑州祥和集团电气设备有限公司 | Intelligent detection device and method for PT unit of outdoor ring main unit |
| RU2786506C1 (en) * | 2022-03-15 | 2022-12-21 | Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Новосибирский Государственный Технический Университет" | A method for isolating an overhead power transmission line with a single-phase earth fault in three-phase electrical networks |
-
2017
- 2017-09-05 CN CN201721129934.0U patent/CN207117169U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281945A (en) * | 2018-04-12 | 2018-07-13 | 天津浩源慧能科技有限公司 | It is a kind of based on the singlephase earth fault shielding system and partition method of applying signal outside |
| CN108281945B (en) * | 2018-04-12 | 2024-04-26 | 天津浩源汇能股份有限公司 | Single-phase grounding fault isolation system and isolation method based on externally applied signals |
| CN109164736A (en) * | 2018-08-31 | 2019-01-08 | 保定云木电力科技有限公司 | switch controller |
| CN109444790A (en) * | 2018-10-29 | 2019-03-08 | 广西电网有限责任公司电力科学研究院 | A method of supply voltage mutual inductor working condition is identified suitable for line feed terminals |
| CN110401177A (en) * | 2019-06-26 | 2019-11-01 | 长安大学 | A 10KV line protection device and its application method |
| CN111142059A (en) * | 2019-07-08 | 2020-05-12 | 郑州祥和集团电气设备有限公司 | Intelligent detection device and method for PT unit of outdoor ring main unit |
| RU2786506C1 (en) * | 2022-03-15 | 2022-12-21 | Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Новосибирский Государственный Технический Университет" | A method for isolating an overhead power transmission line with a single-phase earth fault in three-phase electrical networks |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Ya Inventor after: Zhang Jingchun Inventor after: Liu Jikun Inventor after: Han Yuanyuan Inventor after: Wei Dong Inventor after: Li Chong Inventor after: Tian Wenxiang Inventor after: Liu Chunhui Inventor after: Wang Kai Inventor before: Sun Mu Inventor before: Zhang Jingchun Inventor before: Liu Jikun Inventor before: Han Yuanyuan Inventor before: Wei Dong Inventor before: Li Yu Inventor before: Tian Wenxiang Inventor before: Liu Chunhui |