CN107884683A - The initial traveling wave detection means of electric current and transformer station's outlet cable fault monitoring method - Google Patents
The initial traveling wave detection means of electric current and transformer station's outlet cable fault monitoring method Download PDFInfo
- Publication number
- CN107884683A CN107884683A CN201711455727.9A CN201711455727A CN107884683A CN 107884683 A CN107884683 A CN 107884683A CN 201711455727 A CN201711455727 A CN 201711455727A CN 107884683 A CN107884683 A CN 107884683A
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- Prior art keywords
- traveling wave
- electric current
- initial traveling
- detection means
- conductive seat
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- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000012544 monitoring process Methods 0.000 title claims abstract description 10
- 238000002627 tracheal intubation Methods 0.000 claims description 34
- 229920001971 elastomer Polymers 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 230000001052 transient effect Effects 0.000 abstract description 2
- 238000013459 approach Methods 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009394 selective breeding Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- 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
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/14—Indicating direction of current; Indicating polarity of voltage
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention provides the initial traveling wave detection means of electric current and transformer station's outlet cable fault monitoring method, the initial traveling wave detection means of electric current includes current transformer, the current transformer is connected with the first lead and the second lead, first lead or the second lead are provided with the first breaker, first lead is connected with the first conductive seat, and the second breaker is provided between first conductive seat and the second conductive seat.Transformer station's outlet cable fault monitoring method, is made up of following steps：The initial traveling wave of the three-phase current of each bar circuit is obtained, the initial traveling wave of electric current is analyzed, determines faulty line.By adopting the above-described technical solution, compared with prior art, it is an advantage of the invention that：Suitable current transformer can be equipped with scene as needed, installation, easy to use, using the polarity and the opposite polarity of non-fault line this principle failure judgement circuit of the initial traveling wave of the transient zero mode current of faulty line, this method has the advantages of reliability is high.
Description
Technical field
The present invention relates to technical field of electric power.
Specifically, it is to be related to the initial traveling wave detection means of electric current and transformer station's outlet cable fault monitoring method.
Background technology
For transformer station's outlet cable fault monitoring, the past looks for using the artificial selection method for drawing road, this method
The circuit that is out of order takes long enough, and reduces the quality of power supply so that the economic benefit of power supply unit and user receive shadow
Ring.And power network is easily by the impact that switch on and off, switching overvoltage and resonance overvoltage can be caused, switch it is anti-
Double action is made again such that its service life reduces.
The content of the invention
It is an object of the invention to overcome the weak point of above-mentioned conventional art, there is provided a kind of initial traveling wave detector dress of electric current
Put and transformer station's outlet cable fault monitoring method, equipment is simply easy to install, and method reliability is high, and the used time is short.
The purpose of the present invention is reached by following technical measures：
The initial traveling wave detection means of electric current, including current transformer, the current transformer are connected with the first lead and second and drawn
Line, first lead or the second lead are provided with the first breaker, and first lead is connected with the first conductive seat, and described
One conductive seat is provided with the first intubation, and the first intubation outside screw is connected with the first nut, if first intubation is provided with
Dry first cracks, and second lead is connected with the second conductive seat, and second conductive seat is provided with second and is intubated, and described second
Intubation outside screw is connected with the second nut, and second intubation is provided with some second and cracked, first conductive seat and second
The second breaker is provided between conductive seat.
As an improvement：Insulation crust is provided between first conductive seat and the second conductive seat.
As an improvement：The shell is socketed with the first rubber tube close to one end of the first conductive seat, and the shell leans on
One end of nearly second conductive seat is socketed with the second rubber tube.
As an improvement：The outer side is provided with connecting groove.
As an improvement：The first intubation inner side is obliquely installed, and the second intubation inner side is obliquely installed.
As an improvement：Also include connecting rod, the connecting rod two end is respectively provided with a cable anchor ear.
As an improvement：Second breaker includes arc-chutes, and static contact and moving contact are provided with the arc-chutes,
The static contact is connected with stationary contact head rod, and described stationary contact head rod one end passes arc-chutes, and the stationary contact head rod is fixed with arc-chutes
Connection, one end that the stationary contact head rod passes arc-chutes are connected with the first conductive seat, and the moving contact is connected with movable contact rod, institute
State movable contact rod one end and pass arc-chutes, arc-chutes, which are provided with, holds the movable contact rod via that movable contact rod passes through, the movable contact rod
Sealing ring is provided with via, the movable contact rod is connected with drive device.
As an improvement：One end that the movable contact rod passes arc-chutes is connected with plate, on second conductive seat
Provided with two pieces conductive plate, between two pieces conductive plate, the plate is in contact with the electrically conductive plates the plate.
As an improvement：The plate is provided with push rod, and the drive device includes hydraulic cylinder, the push rod and hydraulic pressure
Cylinder output end connects.
Transformer station's outlet cable fault monitoring method, it is characterised in that：It is made up of following steps：
S1, by the initial traveling wave detection means of electric current as described above and each bar outlet connection；
S2, obtain each bar circuit three-phase current initial traveling wave, the sample frequency of current transformer is more than 1MHz；
S3, the initial traveling wave of electric current is analyzed, determine faulty line：Contrast the electric current initial row of all outlet line fault phases
Ripple polarity, the outlet circuit opposite with other outlet line polarities are faulty line.
By adopting the above-described technical solution, compared with prior art, it is an advantage of the invention that：Can be live as needed
Be equipped with suitable current transformer, it is installation, easy to use, using the initial traveling wave of the transient zero mode current of faulty line polarity with
This principle failure judgement circuit of the opposite polarity of non-fault line, this method have the advantages of reliability is high.
The invention will be further described with reference to the accompanying drawings and detailed description.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the initial traveling wave detection means of electric current of the present invention.
Accompanying drawing 2 is the structural representation of termination in the initial traveling wave detection means of electric current of the present invention.
Accompanying drawing 3 is the structural representation of the second breaker in the initial traveling wave detection means of electric current of the present invention.
Accompanying drawing 4 is the structural representation of the second breaker in the initial traveling wave detection means of electric current of the present invention.
Accompanying drawing 5 is the structural representation of arc-chutes in the initial traveling wave detection means of electric current of the present invention.
In figure：1- current transformers；The leads of 2- second；The leads of 3- first；The breakers of 4- first；The cables of 5- first；6- connects
Line apparatus；The breakers of 7- second；The cables of 8- second；9- cable anchor ears；The cable cores of 10- first；The nuts of 11- first；12- first
Intubation；13- connecting rods；14- hydraulic cylinders；15- shells；16- second is intubated；The nuts of 17- second；The cable cores of 18- second；19-
Two cable insulations；Second time anchor ear of 20-；The rubber tubes of 21- second；First time anchor ear of 22-；23- static contacts；Embraced on 24- first
Hoop；The rubber tubes of 25- first；Anchor ear on 26- second；The cable insulations of 27- first；28- connecting grooves；29- first cracks；30-
One conductive seat；The conductive seats of 31- second；32- second cracks；33- push rods；34- bar holes；35- conductive plates；36- plates；37- goes out
Arc chamber；38- stationary contact head rods；39- movable contact rods；40- movable contact rod vias；41- sealing rings；42- moving contacts.
Embodiment
Embodiment 1：As shown in Figure 1, the initial traveling wave detection means of electric current, including current transformer 1, current transformer 1
The first lead 3 and the second lead 2 are connected with known approaches, and the first breaker 4 is connected with known approaches on the first lead 3,
First breaker 4 uses prior art, will not be repeated here.
First cable 5 includes the first cable core 10 and the first cable insulation 27.
Second cable 8 includes the second cable core 18 and the second cable insulation 19.
Termination 6 includes shell 15, and shell 15 is made using ceramics, and shell 15 is shaped as cylindrical shape.Shell 15 1
End is bonded with the first conductive seat 30, and the other end of shell 15 is bonded with the second conductive seat 31.
As shown in accompanying drawing 2,3 and 4, the first intubation 12 is welded with the first conductive seat 30, the outside of the first intubation 12 is provided with the
One external screw thread, the first intubation 12 are provided with four first and crack 29.The inner side of first intubation 12 is obliquely installed, and the first intubation 12 is away from the
The internal diameter of the one end of one conductive seat 30 is less than internal diameter of first intubation 12 close to the one end of the first conductive seat 30.
The second intubation 16 is welded with second conductive seat 31, the outside of the second intubation 16 is provided with the second external screw thread, the second intubation
16, which are provided with four second, cracks 32.The inner side of second intubation 16 is obliquely installed, and the second intubation 16 is away from the one end of the second conductive seat 31
Internal diameter is less than internal diameter of second intubation 16 close to the one end of the second conductive seat 31.
The first cable core 10 is plugged with first intubation 12, the first 12 outside screws of intubation are connected with the first nut 11,
First intubation 12 clamps the first cable core 10.
The second cable core 18 is plugged with second intubation 16, the second 16 outside screws of intubation are connected with the second nut 17,
Second intubation 16 clamps the second cable core 18.
The one end of first rubber tube 25 is socketed with the outside of the first cable insulation 27, the other end of the first rubber tube 25 and shell 15
Outside is socketed.Anchor ear 26 fixes the first rubber tube 25 and the insulating barrier of the first cable 27 on second, and anchor ear 24 is by first on first
Rubber tube 25 is fixed with shell 15.
The one end of second rubber tube 21 is socketed with the outside of the second cable insulation 19, the other end of the second rubber tube 21 and shell 15
Outside is socketed.Second time anchor ear 20 fixes the second rubber tube 21 and the second cable insulation 19, and first time anchor ear 22 is by second
Rubber tube 21 is fixed with shell 15.
The both ends of connecting rod 13 are respectively welded with a cable anchor ear 9, wherein a cable anchor ear 9 clamps the first cable 27, it is another
Part cable anchor ear 9 clamps the second cable 19.
As shown in Figure 5, the second breaker 7 is bonded with shell 15, the second breaker 7 includes arc-chutes 37, arc-chutes
37 are made up of ceramics, and static contact 23 and moving contact 42 are provided with arc-chutes 37, and static contact 23 is welded with stationary contact head rod 38, stationary contact
The one end of head rod 38 passes arc-chutes 37, and stationary contact head rod 38 passes one end of arc-chutes 37 and the first conductive seat 30 welds, static contact
Bar 38 is be bonded with arc-chutes 37.Moving contact 42 is welded with movable contact rod 39, and the one end of movable contact rod 39 passes arc-chutes 37, arc-chutes
37 are provided with the movable contact rod via 40 that appearance movable contact rod 39 passes through, and movable contact rod via 40 is interior to be provided with sealing ring with known approaches
41, sealing ring 41 uses prior art, will not be repeated here.Static contact 23, moving contact 42, stationary contact head rod 38 and movable contact rod 39
It is made of copper.
One end that movable contact rod 39 passes arc-chutes 37 is welded with plate 36, and two pieces conduction is welded with the second conductive seat 31
Plate 35, between two pieces conductive plate 35, plate 36 contacts plate 36 with conductive plate 35.
Push rod 33 is bonded with plate 36, push rod 33 is made up of bakelite, and shell 15, which is provided with, holds the bar hole that push rod 33 passes through
34, hydraulic cylinder 14 is installed with known approaches on connecting rod 13, push rod 33 is connected with known approaches with the output end of hydraulic cylinder 14.
The outside of shell 15 is provided with connecting groove 28, and the one end of the first lead 3 is welded with the first conductive seat 30, and the first lead 3 is another
Drawn through connecting groove 28 at end.The one end of second lead 2 is welded with the second conductive seat 31, and the other end of the second lead 2 passes through connecting groove
28 draw.
The present apparatus is then turned off the second breaker 7, electric current passes through current transformer 1 in use, the first breaker 4 of closure；
The first breaker 4 is disconnected when not in use, is then closed the second breaker 7, is convenient for changing current transformer 1.In handoff procedure
One breaker 4 and the second breaker 7 load identical, and the impact that switch on and off is small.
Embodiment 2：Transformer station's outlet cable fault monitoring method, is made up of following steps：
S1, by the initial traveling wave detection means of electric current as described in example 1 above and each bar outlet connection；
S2, obtain each bar circuit three-phase current initial traveling wave, the sample frequency of current transformer is more than 1MHz；
S3, the initial traveling wave of electric current is analyzed, determine faulty line：Contrast the electric current initial row of all outlet line fault phases
Ripple polarity, the outlet circuit opposite with other outlet line polarities are faulty line；
Specifically, the initial traveling wave of electric current is analyzed using MATLAB simulation softwares.
Several embodiments of the present invention are described in detail above, but the content is only the preferable implementation of the present invention
Example, it is impossible to be considered as the practical range for limiting the present invention.All equivalent changes made according to the present patent application scope and improvement
Deng, all should belong to the present invention patent covering scope within.
Claims (10)
1. the initial traveling wave detection means of electric current, including current transformer（1）, the current transformer（1）It is connected with the first lead
（3）With the second lead（2）, it is characterised in that：First lead（3）Or second lead（2）It is provided with the first breaker（4）,
First lead（3）It is connected with the first conductive seat（30）, first conductive seat（30）It is provided with the first intubation（12）, it is described
First intubation（12）Outside screw is connected with the first nut（11）, first intubation（12）Some first are provided with to crack（29）,
Second lead（2）It is connected with the second conductive seat（31）, second conductive seat（31）It is provided with the second intubation（16）, it is described
Second intubation（16）Outside screw is connected with the second nut（17）, second intubation（16）Some second are provided with to crack（32）,
First conductive seat（30）With the second conductive seat（31）Between be provided with the second breaker（7）.
2. the initial traveling wave detection means of electric current according to claim 1, it is characterised in that：First conductive seat（30）With
Second conductive seat（31）Between be provided with insulation crust（15）.
3. the initial traveling wave detection means of electric current according to claim 2, it is characterised in that：The shell（15）Close to first
Conductive seat（30）One end be socketed with the first rubber tube（25）, the shell（15）Close to the second conductive seat（31）One end socket
There is the second rubber tube（21）.
4. the initial traveling wave detection means of electric current according to claim 2, it is characterised in that：The shell（15）Outside is provided with
Connecting groove（28）.
5. the initial traveling wave detection means of electric current according to claim 1, it is characterised in that：First intubation（12）Inner side
It is obliquely installed, second intubation（16）Inner side is obliquely installed.
6. the initial traveling wave detection means of electric current according to claim 1, it is characterised in that：Also include connecting rod（13）, it is described
Connecting rod（13）Both ends are respectively provided with a cable anchor ear（9）.
7. according to one of them described initial traveling wave detection means of electric current of claim 1 to 6, it is characterised in that：Described second
Breaker（7）Including arc-chutes（37）, the arc-chutes（37）It is interior to be provided with static contact（23）And moving contact（42）, the static contact
（23）It is connected with stationary contact head rod（38）, the stationary contact head rod（38）One end passes arc-chutes（37）, the stationary contact head rod（38）With
Arc-chutes（37）It is fixedly connected, the stationary contact head rod（38）Pass arc-chutes（37）One end and the first conductive seat（30）Connection,
The moving contact（42）It is connected with movable contact rod（39）, the movable contact rod（39）One end passes arc-chutes（37）, arc-chutes
（37）Provided with appearance movable contact rod（39）The movable contact rod via passed through（40）, the movable contact rod via（40）It is interior to be provided with sealing ring
（41）, the movable contact rod（39）It is connected with drive device.
8. the initial traveling wave detection means of electric current according to claim 7, it is characterised in that：The movable contact rod（39）Pass
Arc-chutes（37）One end be connected with plate（36）, second conductive seat（31）It is provided with two pieces conductive plate（35）, it is described to insert
Plate（36）Positioned at two pieces conductive plate（35）Between, the plate（36）With conductive plate（35）Contact.
9. the initial traveling wave detection means of electric current according to claim 8, it is characterised in that：The plate（36）It is provided with and pushes away
Bar（33）, the drive device includes hydraulic cylinder（14）, the push rod（33）With hydraulic cylinder（14）Output end connects.
10. transformer station's outlet cable fault monitoring method, it is characterised in that：It is made up of following steps：
S1, by the initial traveling wave detection means of electric current as described in claim 1 and each bar outlet connection；
S2, obtain each bar circuit three-phase current initial traveling wave, the sample frequency of current transformer is more than 1MHz；
S3, the initial traveling wave of electric current is analyzed, determine faulty line：Contrast the electric current initial row of all outlet line fault phases
Ripple polarity, the outlet circuit opposite with other outlet line polarities are faulty line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711455727.9A CN107884683A (en) | 2017-12-28 | 2017-12-28 | The initial traveling wave detection means of electric current and transformer station's outlet cable fault monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711455727.9A CN107884683A (en) | 2017-12-28 | 2017-12-28 | The initial traveling wave detection means of electric current and transformer station's outlet cable fault monitoring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107884683A true CN107884683A (en) | 2018-04-06 |
Family
ID=61770444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711455727.9A Pending CN107884683A (en) | 2017-12-28 | 2017-12-28 | The initial traveling wave detection means of electric current and transformer station's outlet cable fault monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107884683A (en) |
Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB276117A (en) * | 1926-07-10 | 1927-08-25 | George Ellison | Improvements relating to couplings for electric cables |
| CN86203018U (en) * | 1986-05-17 | 1987-01-21 | 机械工业部上海电缆研究所 | Flame-proof high-voltage cable coupler used in mine |
| TW543256B (en) * | 2001-10-08 | 2003-07-21 | You-Jia Lin | Cable and wire connector |
| CN2604773Y (en) * | 2003-03-02 | 2004-02-25 | 新艺集团有限公司 | Invertible wiring electrical leakage breaker |
| CN101068078A (en) * | 2007-06-05 | 2007-11-07 | 北海银河高科技产业股份有限公司 | Small current earthing wire-selecting method |
| CN201004553Y (en) * | 2007-01-08 | 2008-01-09 | 李永吉 | Arc over voltage limit for power transmission and distribution system and integrated device for small current grounding and line selection |
| CN201060794Y (en) * | 2007-07-13 | 2008-05-14 | 宁波鑫鑫鑫寅电气有限公司 | Vacuum breaker |
| CN201307651Y (en) * | 2007-11-30 | 2009-09-09 | 北京市电力公司 | Arc extinguishing grounding device for a cross-interconnected system |
| CN201877348U (en) * | 2010-12-09 | 2011-06-22 | 上海德力西集团有限公司 | Outdoor high-voltage alternating-current vacuum breaker |
| CN102290280A (en) * | 2011-07-06 | 2011-12-21 | 江苏省如高高压电器有限公司 | Vacuum circuit breaker body |
| CN202564125U (en) * | 2012-03-23 | 2012-11-28 | 平高集团有限公司 | Vacuum circuit breaker |
| CN203232841U (en) * | 2013-05-08 | 2013-10-09 | 河北国文电气设备有限公司 | Intelligent vacuum circuit breaker configured with independent zero-sequence current transformer |
| CN103683070A (en) * | 2013-11-30 | 2014-03-26 | 国家电网公司 | Switch cabinet and incoming and outgoing line function module thereof |
| CN103871775A (en) * | 2012-12-14 | 2014-06-18 | 伊顿公司 | Vacuum arc extinguish chamber and vacuum breaker with same |
| CN104283030A (en) * | 2014-10-23 | 2015-01-14 | 国家电网公司 | Grounding wire lengthening wire clamp |
| CN104360226A (en) * | 2014-10-31 | 2015-02-18 | 国家电网公司 | Method for monitoring fault of cable outgoing lines of transformer substation on basis of current initial traveling wave polarity |
| CN104375056A (en) * | 2014-10-31 | 2015-02-25 | 国家电网公司 | Substation cable outgoing line fault monitoring method based on voltage and current initial row waves |
| CN204230848U (en) * | 2014-12-15 | 2015-03-25 | 浙江恒光电气有限公司 | Protection against electric shock road lamp wiring box |
| CN104483594A (en) * | 2014-12-08 | 2015-04-01 | 国网山东省电力公司日照供电公司 | Method for carrying out line selection on low-current grounded fault traveling waves |
| CN204615165U (en) * | 2015-04-30 | 2015-09-02 | 安徽合电正泰电气成套设备有限公司 | A kind of AC metal sealed switch apparatus with bypass functionality |
| CN105895392A (en) * | 2014-11-05 | 2016-08-24 | 宁波市镇海匡正电子科技有限公司 | Circuit breaker structure |
| CN207817130U (en) * | 2017-12-28 | 2018-09-04 | 国网山东省电力公司高密市供电公司 | The initial traveling wave detection device of electric current |
-
2017
- 2017-12-28 CN CN201711455727.9A patent/CN107884683A/en active Pending
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB276117A (en) * | 1926-07-10 | 1927-08-25 | George Ellison | Improvements relating to couplings for electric cables |
| CN86203018U (en) * | 1986-05-17 | 1987-01-21 | 机械工业部上海电缆研究所 | Flame-proof high-voltage cable coupler used in mine |
| TW543256B (en) * | 2001-10-08 | 2003-07-21 | You-Jia Lin | Cable and wire connector |
| CN2604773Y (en) * | 2003-03-02 | 2004-02-25 | 新艺集团有限公司 | Invertible wiring electrical leakage breaker |
| CN201004553Y (en) * | 2007-01-08 | 2008-01-09 | 李永吉 | Arc over voltage limit for power transmission and distribution system and integrated device for small current grounding and line selection |
| CN101068078A (en) * | 2007-06-05 | 2007-11-07 | 北海银河高科技产业股份有限公司 | Small current earthing wire-selecting method |
| CN201060794Y (en) * | 2007-07-13 | 2008-05-14 | 宁波鑫鑫鑫寅电气有限公司 | Vacuum breaker |
| CN201307651Y (en) * | 2007-11-30 | 2009-09-09 | 北京市电力公司 | Arc extinguishing grounding device for a cross-interconnected system |
| CN201877348U (en) * | 2010-12-09 | 2011-06-22 | 上海德力西集团有限公司 | Outdoor high-voltage alternating-current vacuum breaker |
| CN102290280A (en) * | 2011-07-06 | 2011-12-21 | 江苏省如高高压电器有限公司 | Vacuum circuit breaker body |
| CN202564125U (en) * | 2012-03-23 | 2012-11-28 | 平高集团有限公司 | Vacuum circuit breaker |
| CN103871775A (en) * | 2012-12-14 | 2014-06-18 | 伊顿公司 | Vacuum arc extinguish chamber and vacuum breaker with same |
| CN203232841U (en) * | 2013-05-08 | 2013-10-09 | 河北国文电气设备有限公司 | Intelligent vacuum circuit breaker configured with independent zero-sequence current transformer |
| CN103683070A (en) * | 2013-11-30 | 2014-03-26 | 国家电网公司 | Switch cabinet and incoming and outgoing line function module thereof |
| CN104283030A (en) * | 2014-10-23 | 2015-01-14 | 国家电网公司 | Grounding wire lengthening wire clamp |
| CN104360226A (en) * | 2014-10-31 | 2015-02-18 | 国家电网公司 | Method for monitoring fault of cable outgoing lines of transformer substation on basis of current initial traveling wave polarity |
| CN104375056A (en) * | 2014-10-31 | 2015-02-25 | 国家电网公司 | Substation cable outgoing line fault monitoring method based on voltage and current initial row waves |
| CN105895392A (en) * | 2014-11-05 | 2016-08-24 | 宁波市镇海匡正电子科技有限公司 | Circuit breaker structure |
| CN104483594A (en) * | 2014-12-08 | 2015-04-01 | 国网山东省电力公司日照供电公司 | Method for carrying out line selection on low-current grounded fault traveling waves |
| CN204230848U (en) * | 2014-12-15 | 2015-03-25 | 浙江恒光电气有限公司 | Protection against electric shock road lamp wiring box |
| CN204615165U (en) * | 2015-04-30 | 2015-09-02 | 安徽合电正泰电气成套设备有限公司 | A kind of AC metal sealed switch apparatus with bypass functionality |
| CN207817130U (en) * | 2017-12-28 | 2018-09-04 | 国网山东省电力公司高密市供电公司 | The initial traveling wave detection device of electric current |
Non-Patent Citations (3)
| Title |
|---|
| 孙树森: "《利用暂态行波的变电站10kV电缆故障选线方法研究》" * |
| 曹运刚;陈平;杨茂亭;姜映辉;孙树森;: "基于人工神经网络的小电流接地故障选线方法研究", no. 01 * |
| 鲍新;刘双喜;何峰;孙树森;李垂有;: "变电站10kV电缆出线单相故障初始行波特性分析", no. 05 * |
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Application publication date: 20180406 |