CN107329036A - A kind of short-circuit sensor for high-tension line - Google Patents
A kind of short-circuit sensor for high-tension line Download PDFInfo
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- CN107329036A CN107329036A CN201710701367.XA CN201710701367A CN107329036A CN 107329036 A CN107329036 A CN 107329036A CN 201710701367 A CN201710701367 A CN 201710701367A CN 107329036 A CN107329036 A CN 107329036A
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- resistance
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- luminescent device
- tension line
- current transformer
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- 239000013307 optical fiber Substances 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 8
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 230000008054 signal transmission Effects 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 13
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 206010064127 Solar lentigo Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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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 discloses a kind of short-circuit sensor for high-tension line, including the current transformer with cable connection, it is connected with the current transformer, the signal processing circuit luminous for the signal control luminescent device exported according to the current transformer, the optical fiber being arranged at the luminescent device, for by the optical signal transmission of the luminescent device to main frame.As can be seen here, this sensor can determine whether cable breaks down in time, and staff can be rapid to determine line fault section by local alarm situation, and finds out trouble point.In addition, realizing the transmission for gathering signal by optical fiber, Phototube Coupling is not only realized, Insulation Problems are efficiently solved, and make it that signal energy loss in transmitting procedure is small, is difficult by external interference, it is adaptable to high-tension line.
Description
Technical field
The present invention relates to electric and electronic technical field, more particularly to a kind of short-circuit sensor for high-tension line.
Background technology
In looped network distribution system, particularly in system largely using ring net load switch, if next stage distribution
When line short fault or earth fault are there occurs in network system, the electric power system of upper level must be entered within the defined time
Row disjunction, to prevent major accident.
And in the prior art, although short-circuit sensor comparative maturity, but be due to that high-tension line surrounding interferers are more,
It is due to, by external interference, to cause the signal collected can not be accurate although causing short-circuit sensor to perceive short-circuit signal
Really transmit to outside platform, for example, monitoring host computer etc..
As can be seen here, how to realize to the temperature monitoring of high-tension line it is those skilled in the art's urgent problem to be solved.
The content of the invention
It is an object of the invention to provide a kind of short-circuit sensor for high-tension line, realized by optical fiber to collection signal
Transmission have the advantages that it is anti-interference strong.
In order to solve the above technical problems, the present invention provide a kind of short-circuit sensor for high-tension line, including with cable
The current transformer of connection, is connected with the current transformer, and the signal for being exported according to the current transformer is controlled
The luminous signal processing circuit of luminescent device, the optical fiber being arranged at the luminescent device, for by the light of the luminescent device
Signal is transmitted to main frame.
Preferably, the signal processing circuit specifically includes first resistor, second resistance, 3rd resistor, the 4th resistance,
Five resistance, the 6th resistance, adjustable potentiometer, the 8th resistance, two-way killer tube, rectifier, voltage detector, PNP type triode；
Wherein, the coil of the current transformer successively with the two-way killer tube, the first resistor and described whole
Flow that device is in parallel, the negative pole ground connection of the output end of the rectifier, the positive pole of the output end of the rectifier is respectively with described second
The first end of resistance, the first end of the 3rd resistor, the of the emitter stage of the PNP type triode and the 6th resistance
The first of one end connection, the second end of the 3rd resistor and the first fixing end of the adjustable potentiometer and the 4th resistance
End connection, the second fixing end of the adjustable potentiometer is connected with the first end of the 8th resistance, and the of the 8th resistance
Two ends are grounded, and the second end of the second resistance is connected with the positive pole of the luminescent device, the negative pole of the luminescent device and institute
The output end connection of voltage detector is stated, the input of the voltage detector is connected with the sliding end of the adjustable potentiometer,
First end of the negative pole of the luminescent device also with the 5th resistance is connected, the second end and the described 6th of the 5th resistance
Second end of resistance and the base stage connection of the PNP type triode, the colelctor electrode of the PNP type triode and the 4th resistance
The second end connection.
Preferably, the rectifier is full-bridge rectifier.
Preferably, the full-bridge rectifier is HD06 rectifiers.
Preferably, the voltage detector is HT2027 voltage detectors.
Preferably, the luminescent device is light emitting diode.
Short-circuit sensor for high-tension line provided by the present invention for high-tension line, including with cable connection
Current transformer, is connected with the current transformer, and the signal for being exported according to the current transformer controls photophore
The luminous signal processing circuit of part, the optical fiber being arranged at the luminescent device, for the optical signal of the luminescent device to be passed
Transport to main frame.As can be seen here, this sensor can determine whether cable breaks down in time, and staff can be by local report
Alert device situation, it is rapid to determine line fault section, and find out trouble point.In addition, realizing the transmission for gathering signal by optical fiber, no
Phototube Coupling is only realized, Insulation Problems are efficiently solved, and make it that signal energy loss in transmitting procedure is small, is difficult
By external interference, it is adaptable to high-tension line.
Brief description of the drawings
In order to illustrate the embodiments of the present invention more clearly, the required accompanying drawing used in embodiment will be done simply below
Introduce, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ordinary skill people
For member, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structure chart of short-circuit sensor for high-tension line provided in an embodiment of the present invention；
Fig. 2 is a kind of physical circuit figure of short-circuit sensor provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
Embodiment in invention, those of ordinary skill in the art are not under the premise of creative work is made, and what is obtained is every other
Embodiment, belongs to the scope of the present invention.
The core of the present invention is to provide a kind of short-circuit sensor for high-tension line, is realized by optical fiber to collection signal
Transmission have the advantages that it is anti-interference strong.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Fig. 1 is a kind of structure chart of short-circuit sensor for high-tension line provided in an embodiment of the present invention.Such as Fig. 1 institutes
Show, the short-circuit sensor includes the current transformer 10 with cable connection, is connected with current transformer 10, for according to electric current
The signal that transformer 10 is exported controls the luminous signal processing circuit 12 of luminescent device 11, the optical fiber being arranged at luminescent device 11
13, for by the optical signal transmission of luminescent device 12 to main frame.
In specific implementation, current transformer 10 is reliable in order to ensure by the electric current of the circuit on coil-induced cable
Property, three short-circuit sensors can be set on cable, connected one to one respectively with the three-phase line in cable.When electric current is mutual
When sensor 10 perceives the electric current on circuit, induced signal is inputted to signal processing circuit 12, signal processing circuit 12 is being sentenced
Break when induced signal for short circuit current flow, control connected luminescent device 11 to light.Optical fiber 12 is arranged on luminescent device 11
Around, for when luminescent device 11 lights, transmitting a signal to main frame.So main frame is after optical signal is received, it becomes possible to
Determine that short circuit phenomenon occurs in cable.
In the present embodiment, the signal of luminescent device 11 is to be transmitted by optical fiber 13 to main frame, use optical-fibre communications have with
Lower advantage：
1) electric property, high mechanical strength, sealing, corrosion resistance and good ensure the finger of optical fiber under rugged environment
Mark does not decline, and service life is long；
2) optical fiber electromagnetism interference performance is excellent.Optical fiber is insulating material, so not by thunder and lightning interference, the ionization of nature
The change of layer and the interference of Sunspot Activities, are not also done by industrial electrical equipments such as electric railway feed line and high-tension apparatuses
Disturb；
3) fibre loss is low, long transmission distance.Fibre loss can be less than 0.2dB/km, and this is than current any transmission medium
Loss is all low, in unrepeatered transmission distance up to tens, kilometer even up to a hundred；
4) signal cross-talk is small, security performance is good, and size is small, lightweight, is easy to lay；
5) material source enriches, and environmental protection is good, is conducive to saving non-ferrous metal copper；
6) it is radiationless, it is difficult to eavesdrop, because the light wave of optical fiber transmission can not be run out of beyond optical fiber.
The short-circuit sensor for high-tension line that the present embodiment is provided, passes through short circuit current flow of the current transformer to cable
It is acquired, and is transmitted through the fiber to main frame and carries out signal analysis.As can be seen here, this sensor can determine cable in time
Whether break down, staff can be rapid to determine line fault section by local alarm situation, and finds out trouble point.
In addition, realizing the transmission for gathering signal by optical fiber, Phototube Coupling is not only realized, Insulation Problems are efficiently solved, and
So that signal energy loss in transmitting procedure is small, it is difficult by external interference, it is adaptable to high-tension line.
In order to allow those skilled in the art more to understand the specific implementation of short-circuit sensor provided by the present invention, under
It will be explained in text.Fig. 2 is a kind of physical circuit figure of short-circuit sensor provided in an embodiment of the present invention.As shown in Fig. 2 letter
Number process circuit 12 specifically includes first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5,
Six resistance R6, adjustable potentiometer R7, the 8th resistance R8, two-way killer tube D1, rectifier D3, voltage detector U1, the pole of positive-negative-positive three
Pipe Q1.
Wherein, the coil K1 of current transformer is in parallel with two-way killer tube D1, first resistor R1 and rectifier D3 successively,
The negative pole ground connection of rectifier D3 output end, the positive pole of rectifier D3 output end first end respectively with second resistance R2, the
The first end connection of three resistance R3 first end, PNP type triode Q1 emitter stage and the 6th resistance R6,3rd resistor R3's
Second end is connected with adjustable potentiometer R7 the first fixing end and the 4th resistance R4 first end, and the second of adjustable potentiometer R7 consolidates
Fixed end is connected with the 8th resistance R8 first end, the 8th resistance R8 the second end ground connection, and second resistance R2 the second end is with lighting
The positive pole connection of device (being light emitting diode D2 in figure), light emitting diode D2 negative pole connects with voltage detector U1 output end
Connect, voltage detector U1 input is connected with adjustable potentiometer R7 sliding end, light emitting diode D2 negative pole is also with the 5th
Resistance R5 first end connection, the 5th resistance R5 the second end and the 6th resistance R6 the second end and PNP type triode Q1 base
Pole is connected, and PNP type triode Q1 colelctor electrode is connected with the 4th resistance R4 the second end.
As shown in Fig. 2 when coil K1 using highly sensitive Current Mutual Inductance induces current signal, and pass through first resistor R1
Voltage signal is converted to, by being exported after rectifier D3 rectifications, is exported respectively to PNP type triode Q1 emitter stage, and it is defeated
Go out the input that signal enters voltage detector U1 after 3rd resistor R3 and adjustable potentiometer R7, when electric current exceedes set point
When, after voltage detector U1 detection voltages transfinite, low level is exported, and light luminescent device D2.Preferably embodiment,
Rectifier D3 is full-bridge rectifier, more specifically, and full-bridge rectifier is HD06 rectifiers.In addition, voltage detector U1 is
HT2027 voltage detectors.
In specific implementation, short circuit current flow during short trouble can be set, it is possible to understand that ground is, alarm current, delay
Time, adjustment can be needed when dispatching from the factory according to client.
A) action current scope is continuously adjustabe in 400A to 1600A, factory, and factory default is 630A；
B) it is delayed：40~300ms is adjustable in factory, and factory default is 40ms；
C) precision：＜ ± 10% (in operating temperature range).
When this product is designed, in short trouble context of detection, Microcomputer Protection principle is introduced into the designing technique of this product,
I.e. using the method for detection electric current ratio-change If/I0 (ratio of fault current and load current) mutation value, and combined circuit is jumped
Lock has a power failure to detect short trouble.This ratio-change mutation value, according to the curve built in the short-circuit sensor for high-tension line
Algorithm is simultaneously adjusted according to the size automatic dynamic of load current, and the current break value static state for overcoming " current break method " use is solid
Fixed constant defect.
Therefore this product is not influenceed by line construction, management mode, geographical environment, the even time of running, from root
The false alarm in the market based on " excessively stream method or " and the presence of " current break method " design principle is overcome in sheet or police is failed to report
Defect, therefore short trouble detection accurately and reliably.
The short-circuit sensor provided by the present invention for high-tension line is described in detail above.It is each in specification
Individual embodiment is described by the way of progressive, and what each embodiment was stressed is the difference with other embodiment, respectively
Between individual embodiment identical similar portion mutually referring to.It should be pointed out that coming for those skilled in the art
Say, under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these improve and modified
Also fall into the protection domain of the claims in the present invention.
It should also be noted that, in this manual, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that
A little key elements, but also other key elements including being not expressly set out.In the absence of more restrictions, by sentence " including one
It is individual ... " limit key element, it is not excluded that in the process including the key element, method, article or equipment also exist in addition
Identical element.
Claims (6)
1. a kind of short-circuit sensor for high-tension line, it is characterised in that including the current transformer with cable connection, with institute
Current transformer connection is stated, the luminous signal transacting of the signal control luminescent device for being exported according to the current transformer
Circuit, the optical fiber being arranged at the luminescent device, for by the optical signal transmission of the luminescent device to main frame.
2. the short-circuit sensor according to claim 1 for high-tension line, it is characterised in that the signal processing circuit
Specifically include first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, adjustable potentiometer, the 8th
Resistance, two-way killer tube, rectifier, voltage detector, PNP type triode；
Wherein, the coil of the current transformer successively with the two-way killer tube, the first resistor and the rectifier
Parallel connection, the negative pole ground connection of the output end of the rectifier, the positive pole of the output end of the rectifier respectively with the second resistance
First end, the first end of the 3rd resistor, the first end of the emitter stage of the PNP type triode and the 6th resistance
Connection, the second end of the 3rd resistor connects with the first fixing end of the adjustable potentiometer and the first end of the 4th resistance
Connect, the second fixing end of the adjustable potentiometer is connected with the first end of the 8th resistance, the second end of the 8th resistance
Ground connection, the second end of the second resistance is connected with the positive pole of the luminescent device, the negative pole of the luminescent device and the electricity
The output end connection of detector is pressed, the input of the voltage detector is connected with the sliding end of the adjustable potentiometer, described
First end of the negative pole of luminescent device also with the 5th resistance is connected, the second end and the 6th resistance of the 5th resistance
The second end and the PNP type triode base stage connection, the of the colelctor electrode of the PNP type triode and the 4th resistance
Two ends are connected.
3. the short-circuit sensor according to claim 2 for high-tension line, it is characterised in that the rectifier is full-bridge
Rectifier.
4. the short-circuit sensor according to claim 3 for high-tension line, it is characterised in that the full-bridge rectifier is
HD06 rectifiers.
5. the short-circuit sensor according to claim 2 for high-tension line, it is characterised in that the voltage detector is
HT2027 voltage detectors.
6. the short-circuit sensor for high-tension line according to claim 1-5 any one, it is characterised in that the hair
Optical device is light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710701367.XA CN107329036B (en) | 2017-08-16 | 2017-08-16 | A kind of short-circuit sensor for high-tension line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710701367.XA CN107329036B (en) | 2017-08-16 | 2017-08-16 | A kind of short-circuit sensor for high-tension line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107329036A true CN107329036A (en) | 2017-11-07 |
| CN107329036B CN107329036B (en) | 2019-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710701367.XA Active CN107329036B (en) | 2017-08-16 | 2017-08-16 | A kind of short-circuit sensor for high-tension line |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129008A (en) * | 2011-01-07 | 2011-07-20 | 杭州市电力局 | Fault detection device for distribution network |
| CN103267922A (en) * | 2013-05-15 | 2013-08-28 | 国家电网公司 | Intelligent cable short circuit grounding and temperature fault indicator |
| CN103884961A (en) * | 2014-03-12 | 2014-06-25 | 珠海创能科世摩电气科技有限公司 | Cable fault on-line monitoring system |
| CN203870190U (en) * | 2014-04-30 | 2014-10-08 | 杭州欣美成套电器制造有限公司 | Fiber-style grounding and short-circuit fault indicator |
| CN207020267U (en) * | 2017-08-16 | 2018-02-16 | 杭州大有科技发展有限公司 | A kind of short-circuit sensor for high-tension line |
-
2017
- 2017-08-16 CN CN201710701367.XA patent/CN107329036B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129008A (en) * | 2011-01-07 | 2011-07-20 | 杭州市电力局 | Fault detection device for distribution network |
| CN103267922A (en) * | 2013-05-15 | 2013-08-28 | 国家电网公司 | Intelligent cable short circuit grounding and temperature fault indicator |
| CN103884961A (en) * | 2014-03-12 | 2014-06-25 | 珠海创能科世摩电气科技有限公司 | Cable fault on-line monitoring system |
| CN203870190U (en) * | 2014-04-30 | 2014-10-08 | 杭州欣美成套电器制造有限公司 | Fiber-style grounding and short-circuit fault indicator |
| CN207020267U (en) * | 2017-08-16 | 2018-02-16 | 杭州大有科技发展有限公司 | A kind of short-circuit sensor for high-tension line |
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| Publication number | Publication date |
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| CN107329036B (en) | 2019-08-06 |
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Address after: 310051 No. 263, MII Hou Wang Road, Binjiang District Xi Xing street, Hangzhou, Zhejiang. Applicant after: HANGZHOU DA YOU SCIENCE TECHNOLOGY DEVELOPMENT Co.,Ltd. Applicant after: HANGZHOU POWER SUPPLY COMPANY, STATE GRID ZHEJIANG ELECTRIC POWER Co.,Ltd. Applicant after: STATE GRID CORPORATION OF CHINA Address before: 310051 No. 263, MII Hou Wang Road, Binjiang District Xi Xing street, Hangzhou, Zhejiang. Applicant before: HANGZHOU DA YOU SCIENCE TECHNOLOGY DEVELOPMENT Co.,Ltd. Applicant before: HANGZHOU POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER Co. Applicant before: State Grid Corporation of China |
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Effective date of registration: 20181205 Address after: 310009 158 Jianguo South Road, Hangzhou, Zhejiang Applicant after: ZHEJIANG DAYOU INDUSTRIAL Co.,Ltd. Applicant after: ZHEJIANG DAYOU INDUSTRIAL Co.,Ltd. HANGZHOU SCIENCE AND TECHNOLOGY DEVELOPMENT BRANCH Applicant after: HANGZHOU POWER SUPPLY COMPANY, STATE GRID ZHEJIANG ELECTRIC POWER Co.,Ltd. Applicant after: STATE GRID CORPORATION OF CHINA Address before: 310051 No. 263, MII Hou Wang Road, Binjiang District Xi Xing street, Hangzhou, Zhejiang. Applicant before: HANGZHOU DA YOU SCIENCE TECHNOLOGY DEVELOPMENT Co.,Ltd. Applicant before: HANGZHOU POWER SUPPLY COMPANY, STATE GRID ZHEJIANG ELECTRIC POWER Co.,Ltd. Applicant before: STATE GRID CORPORATION OF CHINA |
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