CN106124926B - Outdoor signal source device on a kind of column - Google Patents
Outdoor signal source device on a kind of column Download PDFInfo
- Publication number
- CN106124926B CN106124926B CN201610422980.3A CN201610422980A CN106124926B CN 106124926 B CN106124926 B CN 106124926B CN 201610422980 A CN201610422980 A CN 201610422980A CN 106124926 B CN106124926 B CN 106124926B
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- China
- Prior art keywords
- source device
- signal source
- shell
- outlet casing
- casing tube
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
Abstract
Outdoor signal source device on a kind of column of present invention offer, including the entrance bushing and outlet casing tube outside shell and the stretching shell, the entrance bushing is connected with the line bus in distribution network, the outlet casing tube is connected with the ground wire in distribution network, two phase contacts and the resistor being connected with the contactor and the current transformer being sleeved on outlet casing tube are installed in the shell, after distribution network generates singlephase earth fault, the contactor that Earth Phase occurs closes a floodgate, and circuit is constituted with the resistor and the outlet casing tube.Outdoor signal source device has the beneficial effect that on column provided by the invention：The present invention is using the pouring-in principle for detecting signal of signal, it is not influenced by system operation mode, topological structure, neutral grounding mode and failure enchancement factor etc. uniquely, threshold value, the method that signal detection singlephase earth fault is actively sent after singlephase earth fault occurs need not be set to fault detector.
Description
Technical field
The present invention relates to outdoor signal source devices on a kind of column.
Background technology
China's distribution line is intricate, and transmission line of electricity is mostly overhead transmission line, especially in mountain area, overhead transmission line
It is exposed in air, and has comparable height.Under the environment such as harsh weather (rain, snow, mist, thunder), insulation damages easily occur,
Cause to generate the failures such as single-phase earthing, and because overhead transmission line is long, high apart from ground, bad environments (as passed through high mountain jungle) make
Obtaining failure has concealment, it is difficult to quickly and accurately find out fault point.It sometimes has in such a way that trial line charging is operated a switch in segmentation
Come determine failure occur where, to circuit, equipment operation continuity, safety it is very unfavorable.
Although there is the fault detector being hung on cable at present, coordinates and make somebody a mere figurehead remote signalling terminal to identify failure, it is detected
Principle is all passive detection, relies on the variation of distribution network parameters before and after singlephase earth fault occurs.And caused by earthed system
Earth-fault signal itself is weaker, when by electromagnetic interference and harmonic pollution, can making distorted signals, influence the choosing of fault detector
Selecting property and accuracy lose the accuracy implemented in time service.
Therefore, the signal source that can actively send signal detection singlephase earth fault that a principle is adapted with system is researched and developed
Device, to improve selectivity, the accuracy and reliability of singlephase earth fault indicator, being particularly important and urgent market needs
It asks.
Invention content
Technical problem to be solved by the present invention lies in the deficiency for overcoming the above-mentioned prior art, outdoor letter on a kind of column is provided
Number source device.
The main technical schemes used according to outdoor signal source device on a kind of column provided by the invention for：Including shell with
And entrance bushing and outlet casing tube outside the stretching shell, the entrance bushing are connected with the line bus in distribution network
It connects, the outlet casing tube is connected with the ground wire in distribution network.Be equipped in the shell two phase contacts and with institute
The resistor and the current transformer being sleeved on the outlet casing tube that contactor is connected are stated, machinery is provided on the contactor
Electric locking device, after distribution network generates singlephase earth fault, the contactor that Earth Phase occurs closes a floodgate, with the resistance
Device and the outlet casing tube constitute circuit.The load pulses sequence in the earth-return circuit generates a low frequency Injection Signal, matches
Fault detector in electric network is overturn after detecting the low frequency Injection Signal, indicating concurrent is sent has single-phase connect in this earth-return circuit
Earth fault, fault point are between the last one alarm and first fault detector that do not alarm.
Outdoor signal source device can also have following attached technical characteristic on column provided by the invention：
It is provided with the first connection row on the resistor and the second connection is arranged, the first connection row and the contactor phase
Connection, the second connection row are connected with the outlet casing tube.
The current transformer be mounted on the outlet casing tube in the connection line of second row of connection.
Third connection row is provided on the contactor, the third connection row is connected with the entrance bushing.
It is provided with explosion-protection equipment on the shell.
It is provided with mounting bracket on the shell.
Aviation socket, the aviation socket and the aviation plug phase on outside source controller are provided on the shell
Connection.
The shell is filled with sulfur hexafluoride gas.
It is had the beneficial effect that using what outdoor signal source device on column provided by the invention was brought：Family on column provided by the invention
The operation principle of external signal source device is the principle of the pouring-in detection signal of signal, is uniquely not by system operation mode, topology
The influence of structure, neutral grounding mode and failure enchancement factor etc. need not set threshold value to fault detector,
The method that signal detection singlephase earth fault is actively sent after generation singlephase earth fault；
The shell of outdoor signal source device is to select 304 stainless steels on column provided by the invention, with weldering after rushing reinforcing rib
It connects, high mechanical strength, good appearance, there is anticorrosive and antioxidation；Suitable for small current neutral grounding and through arc blowout wire
Enclose the singlephase earth fault positioning and route selection of earthed system.Compact-sized, small, light-weight, economy is high；Application range
Extensively, i.e., outdoor, highlands and environment be also can be widely used to other than it can be applied to city net, the extension of rural power grids and transformation
Compare the Special uses occasion such as severe, seriously polluted, is not influenced by external environment such as condensation, filth, chemical substance etc..It can be city
Net, rural power grids and substation's construction and transformation provide a kind of gas-insulated fault locator, coordinate my company's fault detector structure
It is accurate to find and positioning failure, transmission fault message at complete fault location system.
Description of the drawings
Fig. 1 is the internal structure chart of outdoor signal source device on column of the present invention.
Fig. 2 is the side view of outdoor signal source device on column of the present invention.
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1 to Figure 2, according to the embodiment of outdoor signal source device on a kind of column provided by the invention, including shell
Body 1 and entrance bushing 2 and outlet casing tube 3 outside the shell 1 are stretched out, the entrance bushing 2 and the circuit in distribution network
Busbar is connected, and the outlet casing tube 3 is connected with the ground wire in distribution network, and being equipped with two in the shell 1 is in contact
Device 4 and the resistor 5 being connected with the contactor 4 and the current transformer 6 being sleeved on outlet casing tube 3, distribution network production
After raw singlephase earth fault, the contactor 4 that Earth Phase occurs closes a floodgate, and is constituted back with the resistor 5 and outlet casing tube 3
Road, the load pulses sequence in the earth-return circuit generate a low frequency Injection Signal, in this way, between busbar and earth point
Other than the inductance current (system has arc suppression coil) of capacity current and arc suppression coil that ground connection generates, there are one by signal source
The special low frequency signal that controller generates flows through, and the fault detector in distribution network turns over after detecting the low frequency Injection Signal
Turn, indicating concurrent is sent has singlephase earth fault in this earth-return circuit, mechanical electric blocking device is provided on the contactor 4,
The mechanical electric blocking device is not shown in figure, fault point be the last one alarm and first fault detector that do not alarm it
Between；Rather than the ungrounded part of Earth Phase, ungrounded feeder line and earth connection will not overturn and send information.
The operation principle of outdoor signal source device is the principle of the pouring-in detection signal of signal on column provided by the invention, is
It is not influenced uniquely, is not needed by system operation mode, topological structure, neutral grounding mode and failure enchancement factor etc.
Threshold value is set to fault detector, the side of signal detection singlephase earth fault is actively sent after singlephase earth fault occurs
Method.
Since when single-phase earthing occurs, signal source controller is connect by the actuation of the contactor of automatic switching in systems
A resistor 5 is entered, has changed the condition of resonance occurred when ground connection, reduce the amplitude of overvoltage at this time in this way, reduce
Interference to the distinctive signal that signal source is sent out increases accuracy and the selection of fault detector detection singlephase earth fault
Property.It is also possible to do line-selected earthing device.In unattended operation transformer station, can ground signalling directly be passed into control centre.
In addition, signal source controller has retransmitting function, can again be signaled by artificial or remote control, to ensure that fault detector more may be used
It leans on, accurately act.It is final to solve the problems, such as that scene is in the urgent need to address：Improve the selection of singlephase earth fault indicator
Property, accuracy, reliability.
Referring to Fig. 1 to Fig. 2, according to outdoor signal source device on column provided by the invention, is provided on the resistor 5
One connection row 7 and the second connection row 8, the first connection row 7 are connected with the contactor 4, the second connection row 8 and institute
It states outlet casing tube 3 to be connected, the current transformer 6 is mounted on the connecting line of the outlet casing tube 3 and second row of connection 8
On the road, third connection row 9 is provided on the contactor 4, the third connection row 9 is connected with the entrance bushing 2, described
It is provided with explosion-protection equipment 10 on shell 1, mounting bracket 11 is provided on the shell 1, aviation socket is provided on the shell 1
12, the aviation socket 12 is connected with the aviation plug on outside source controller.Outdoor letter on column provided by the invention
The shell 1 of number source device is to select 304 stainless steels, and with being welded after rushing reinforcing rib, high mechanical strength, good appearance have
There is anticorrosive and antioxidation；Small current neutral grounding suitable for 6~10kV voltage class and compensated distribution network
Singlephase earth fault positions and route selection.Compact-sized, small, light-weight, economy is high；Have a wide range of application, i.e., in addition to can be with
It is outer applied to city net, the extension of rural power grids and transformation, it also can be widely used to that outdoor, highlands and environment be relatively more severe, pollution
It is serious to wait Special uses occasion, it is not influenced by external environment such as condensation, filth, chemical substance etc..Can be city net, rural power grids and power transformation
It stands to build and be transformed and a kind of gas-insulated fault locator is provided, coordinate my company's fault detector to constitute complete failure fixed
Position system, it is accurate to find and positioning failure, transmission fault message.
Referring to Fig. 1 to Fig. 2, according to outdoor signal source device on column provided by the invention, the shell 1 is interior filled with lithium
Sulphur gas, to realize the reliable insulation between 1 inside electric elements of shell.
Embodiment described above, only one kind of the present invention more preferably specific implementation mode, those skilled in the art
The usual variations and alternatives that member carries out within the scope of technical solution of the present invention should be all included within the scope of the present invention.
Claims (8)
1. entrance bushing and outlet casing tube outside outdoor signal source device on a kind of column, including shell and the stretching shell,
The entrance bushing is connected with the line bus in distribution network, and the outlet casing tube is connected with the ground wire in distribution network
It connects.It is characterized in that：Two phase contacts, the resistor being connected with the contactor are installed in the shell and are sleeved on described
Current transformer on outlet casing tube, mechanical electric blocking device is provided on the contactor, and distribution network generates single-phase connects
After earth fault, the contactor that Earth Phase occurs closes a floodgate, and circuit is constituted with the resistor and the outlet casing tube, described
Load pulses sequence in circuit, generates a low frequency Injection Signal, and the fault detector in distribution network detects that the low frequency is noted
Enter overturning after signal, indicating concurrent send that have singlephase earth fault, fault point in this earth-return circuit be the last one alarm and first
Between a fault detector that do not alarm.
2. outdoor signal source device on column according to claim 1, it is characterised in that：It is provided with first on the resistor
Connection row and the second connection are arranged, and the first connection row is connected with the contactor, the second connection row and the outlet
Casing is connected.
3. outdoor signal source device on column according to claim 2, it is characterised in that：The current transformer is mounted on institute
State outlet casing tube in the connection line of second row of connection.
4. outdoor signal source device on column according to claim 1 or 2, it is characterised in that：It is provided on the contactor
Third connection row, the third connection row are connected with the entrance bushing.
5. outdoor signal source device on column according to claim 1, it is characterised in that：Explosion-proof dress is provided on the shell
It sets.
6. outdoor signal source device on column according to claim 1, it is characterised in that：Installation is provided on the shell
Frame.
7. outdoor signal source device on column according to claim 1, it is characterised in that：Aviation is provided on the shell to insert
Seat, the aviation socket are connected with the aviation plug on outside source controller.
8. outdoor signal source device on column according to claim 1, it is characterised in that：The shell is filled with sulfur hexafluoride
Gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610422980.3A CN106124926B (en) | 2016-06-15 | 2016-06-15 | Outdoor signal source device on a kind of column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610422980.3A CN106124926B (en) | 2016-06-15 | 2016-06-15 | Outdoor signal source device on a kind of column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106124926A CN106124926A (en) | 2016-11-16 |
| CN106124926B true CN106124926B (en) | 2018-10-12 |
Family
ID=57270620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610422980.3A Active CN106124926B (en) | 2016-06-15 | 2016-06-15 | Outdoor signal source device on a kind of column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106124926B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703133A (en) * | 2019-10-15 | 2020-01-17 | 北京科锐配电自动化股份有限公司 | Outdoor signal source device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3400365B2 (en) * | 1998-11-18 | 2003-04-28 | 光商工株式会社 | Ground fault directional relay |
| US6184689B1 (en) * | 1999-01-21 | 2001-02-06 | H. J. Arnett Industries | Secondary service conductor tester |
| CN202362415U (en) * | 2011-11-02 | 2012-08-01 | 河南省电力公司信阳供电公司 | Low current single-phase grounding fault route selection and positioning device |
| CN102891448A (en) * | 2012-11-07 | 2013-01-23 | 北京科锐配电自动化股份有限公司 | Gas insulation indoor switch cabinet |
| CN203014360U (en) * | 2012-12-20 | 2013-06-19 | 诸暨市供电局 | On-line circuit fault monitoring and protecting device |
| CN205786741U (en) * | 2016-06-15 | 2016-12-07 | 北京科锐博实电气设备有限公司 | Outdoor signal source device on a kind of post |
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2016
- 2016-06-15 CN CN201610422980.3A patent/CN106124926B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106124926A (en) | 2016-11-16 |
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Effective date of registration: 20210326 Address after: 101499 No.3, Longyun Road, Beifang Town, Huairou District, Beijing Patentee after: CREATIVE BOHUA ELECTRICAL EQUIPMENT Co.,Ltd. Address before: No. 76, Hengli street, Beifang Town, Huairou District, Beijing Patentee before: BEIJING KERUI BOSHI ELECTRICAL EQUIPMENT Co.,Ltd. |
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