CN108205097A - Contactless dead line earthing position detecting system and detection method - Google Patents
Contactless dead line earthing position detecting system and detection method Download PDFInfo
- Publication number
- CN108205097A CN108205097A CN201810110197.2A CN201810110197A CN108205097A CN 108205097 A CN108205097 A CN 108205097A CN 201810110197 A CN201810110197 A CN 201810110197A CN 108205097 A CN108205097 A CN 108205097A
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- 238000001514 detection method Methods 0.000 title claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 230000005611 electricity Effects 0.000 claims abstract description 18
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 12
- 230000006837 decompression Effects 0.000 claims abstract description 6
- 238000005070 sampling Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
-
- 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
Abstract
The present invention relates to contactless dead line earthing position detecting system and detection method, including direct voltage source, square wave generation circuit, the first primary coil, the first secondary coil, the second primary coil, second subprime coil, signal sample circuit and main control chip；Direct voltage source connects rear wave generation circuit and the first primary coil, the first secondary coil is pushed to carry out square wave power decompression, and the square wave power after decompression supplies the second primary coil；Second primary coil port is connected on first grade coil port on power transmission line, if power transmission line is not opened a way, the second primary coil forms closed loop circuit, and second subprime coil generates sensing electric current, induced electricity stream is transformed into voltage signal by signal sample circuit, is transferred to main control chip；Last main control chip determines whether to drive warning indicator light and buzzer, and show the impedance value of access power transmission line in liquid crystal display, whole using non-contact detection, easy to operate, safe, efficient.
Description
Technical field
The present invention relates to a kind of contactless dead line earthing position detecting system and detection methods, belong to electric system
Detection technique field.
Background technology
Needed before newly-built or improved transmission line of electricity power transmission by nuclear phase come check circuit with the presence or absence of ground connection, break with
And whether both sides phase is consistent, but as transmission line of electricity is more and more narrow, multiple-loop line road and long range scissors crossing set up feelings
Condition is more and more frequent.When carrying out nuclear phase to a circuit, in the case that other circuits are currently running, it is tested the induced voltage of circuit
Kilovolt even volts up to ten thousand are likely to be breached, for traditional nuclear phase instrument, easily cause instrument damage, and testing crew is also deposited
In great security risk.Therefore it is badly in need of new test system and method, to ensure that experiment is smoothed out.
Invention content
One of purpose of the present invention is to provide for a kind of contactless safety verification nuclear phase and fault ground position
Dead line earthing position detecting system.
In order to achieve the above objectives, the technical solution adopted by the present invention is：Contactless dead line earthing position detection system
System, including according at the beginning of circuit trend successively electric connection side's wave generation circuit, the first primary coil, the first secondary coil, second
Grade coil, second subprime coil, signal sample circuit and main control chip；It is connect altogether on side's wave generation circuit and main control chip
One direct voltage source；Transmission line of electricity is connected between the port of second primary coil and the port of the first secondary coil；It is described
Alarm lamp, buzzer and liquid crystal display are circumscribed on main control chip.
Preferably, the direct voltage source, square wave generation circuit, the first primary coil, the first secondary coil, the second primary
Coil, second subprime coil, signal sample circuit and main control chip, alarm lamp, buzzer and liquid crystal display are integrated in
It closes in housing.
Preferably, the port of second primary coil with connecting an extension respectively on the port of the first secondary coil
Hook；It is described to be articulated on the transmission line of electricity.
It is a further object to provide a kind of detection sides of contactless dead line earthing position detecting system
Method, including following detecting step：
First, the direct voltage source connect rear wave generation circuit push the first primary coil, the first secondary coil into
Row square wave power is depressured, and the square wave power after decompression supplies the second primary coil；
The second primary coil port hook is articulated in first grade coil port on power transmission line later, if transmission of electricity
Line is not opened a way, and the second primary coil forms closed loop circuit, and second subprime coil generates sensing electric current at this time, and induced electricity flows through
It crosses signal sample circuit and is transformed into voltage signal, be transferred to main control chip；
Last main control chip determines whether to drive warning indicator light and buzzer, and defeated in liquid crystal display display access
The impedance value of electric wire.
Due to the utilization of above-mentioned technical proposal, the present invention has following advantages compared with prior art：
Circuit is realized by the contactless dead line earthing position detecting system and detection method of the present invention program
Power transmission line two-terminal-grounding is formed into a loop after power failure, and the port of the second primary coil and the port of the first secondary coil are connected to power transmission line
On, if power transmission line is not opened a way, the second primary coil will generate sensing electric current, be transmitted a signal to by signal sample circuit
The AD ports of CPU main control chips；The position of failure point of circuit is judged by main control chip, solves that failure accuracy rate is not high asks
Topic, can rapidly and accurately determine abort situation in circuit；Finally prompted again by warning indicator light and buzzer, and
The impedance value of access power transmission line is shown in liquid crystal display.
Transmission line of electricity is made to be examined by both ends by the contactless dead line earthing position detecting system of the present invention program
Whether survey time road is connected determining phase；It is formed into a loop after transmission line of electricity ground connection, exists in circuit after conducting and sense electric current, after open circuit
Non-inductive electric current in circuit, so that it is determined that whether nuclear phase succeeds, whole process is using non-contact detection, easy to operate, safety, efficiency
It is high.
Description of the drawings
Technical solution of the present invention is described further below in conjunction with the accompanying drawings：
Theory structure schematic diagram of the attached drawing 1 for the contactless dead line earthing position detecting system of the present invention；
Wherein：1- direct voltage sources；2- main control chips；3- alarm lamps；4- buzzers；5- liquid crystal displays；6- side
Wave generation circuit；The first primary coils of 7-, the first secondary coils of 8-；The second primary coils of 9-；10- second subprime coils, 11- letters
Number sample circuit；The second primary coils of 12- port, 13- second subprime coil ports；14- closes housing.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
Contactless dead line earthing position detecting system of the present invention as shown in Figure 1, including according to circuit
Move towards electric connection side's wave generation circuit 6, the first primary coil 7, the first secondary coil 8, the second primary coil 9, second successively
Secondary coil 10, signal sample circuit 11 and main control chip 2；A direct current is connect altogether on square wave generation circuit 6 and main control chip 2
Potential source 1；Transmission line of electricity is connected between the second primary coil port 12 and first grade coil port 13；It is external on main control chip 2
There are alarm lamp 3, buzzer 4 and liquid crystal display 5.
Wherein, direct voltage source 1, square wave generation circuit 6, the first primary coil 7, first the 8, second primary line of secondary coil
Circle 9, second subprime coil 10, signal sample circuit 11 and main control chip 2, alarm lamp 3, buzzer 4 and liquid crystal display 5
It is integrated in closing housing 14.
Second primary coil port 12 connect a hook respectively in first grade coil port 13；By being articulated in
On transmission line of electricity.
The contactless dead line earthing position detection method of the present invention, including following detecting step：
First, the direct voltage source 1 connects rear wave generation circuit 6 and pushes the first primary coil 7, the first secondary coil
8 carry out square wave power decompression, and the square wave power after decompression supplies the second primary coil 9；
The second primary coil port hook is articulated in first grade coil port on power transmission line later, if transmission of electricity
Line is not opened a way, and the second primary coil forms closed loop circuit, and second subprime coil generates sensing electric current at this time, and induced electricity flows through
It crosses signal sample circuit and is transformed into voltage signal, be transferred to main control chip；
Last main control chip determines whether to drive warning indicator light and buzzer, and defeated in liquid crystal display display access
The impedance value of electric wire.
Since product is non-contact phasing tester device, so can be further improved to the safety guarantee of testing crew；
The dead line earthing position detecting system of the present invention, is controlled by CPU main control chips, saves some analog circuits
Structure, thus it is small, it is carried convenient for testing crew.
CPU main control chips can calculate the position of trouble point by calculating sampled signal, by wire rod of transmitting electricity
Material (ρ), power transmission line cross-sectional area (S) estimate the line length of trouble point, are converted by formula R=ρ * L/S.
It the above is only the concrete application example of the present invention, protection scope of the present invention be not limited in any way.All uses
Equivalent transformation or equivalent replacement and the technical solution formed, all fall within rights protection scope of the present invention.
Claims (4)
1. contactless dead line earthing position detecting system, it is characterised in that：Including electrically connecting successively according to circuit trend
The side's of connecing wave generation circuit, the first primary coil, the first secondary coil, the second primary coil, second subprime coil, signal sampling electricity
Road and main control chip；A direct voltage source is connect altogether on side's wave generation circuit and main control chip；Transmission line of electricity is connected on described
Between the port of second primary coil and the port of the first secondary coil；Alarm lamp, bee are circumscribed on the main control chip
Ring device and liquid crystal display.
2. contactless dead line earthing position detecting system according to claim 1, it is characterised in that：The direct current
Voltage source, square wave generation circuit, the first primary coil, the first secondary coil, the second primary coil, second subprime coil, signal
Sample circuit and main control chip, alarm lamp, buzzer and liquid crystal display are integrated in closing housing.
3. contactless dead line earthing position detecting system according to claim 1, it is characterised in that：It is described
The port of second primary coil with connecting a hook respectively on the port of the first secondary coil；It is described to be articulated in the transmission of electricity
On circuit.
4. the detection method of contactless dead line earthing position detecting system according to claim 3, feature exist
In：Including following detecting step：
First, the direct voltage source connects rear wave generation circuit and pushes the first primary coil, the first secondary coil progress side
Wave power voltage step down, the square wave power after decompression supply the second primary coil；
The second primary coil port hook is articulated in first grade coil port on power transmission line later, if power transmission line does not have
There is open circuit, the second primary coil forms closed loop circuit, and second subprime coil generates sensing electric current at this time, and induced electricity stream is by letter
Number sample circuit is transformed into voltage signal, is transferred to main control chip；
Last main control chip determines whether to drive warning indicator light and buzzer, and show access power transmission line in liquid crystal display
Impedance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810110197.2A CN108205097A (en) | 2018-02-05 | 2018-02-05 | Contactless dead line earthing position detecting system and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810110197.2A CN108205097A (en) | 2018-02-05 | 2018-02-05 | Contactless dead line earthing position detecting system and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108205097A true CN108205097A (en) | 2018-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810110197.2A Pending CN108205097A (en) | 2018-02-05 | 2018-02-05 | Contactless dead line earthing position detecting system and detection method |
Country Status (1)
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| CN (1) | CN108205097A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820631A (en) * | 2021-08-23 | 2021-12-21 | 珠海优特电力科技股份有限公司 | Intelligent ground wire hanging and dismounting state recognition device and recognition method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4982156A (en) * | 1988-09-02 | 1991-01-01 | Allied-Signal Inc. | Position transducer apparatus and associated circuitry including pulse energized primary winding and pair of waveform sampled secondary windings |
| CN205246811U (en) * | 2015-12-21 | 2016-05-18 | 浙江科畅电子有限公司 | Portable line fault indicator tester |
| CN106556774A (en) * | 2015-09-25 | 2017-04-05 | 浙江科畅电子有限公司 | Overhead transmission line grounding fault searching instrument |
| CN107462772A (en) * | 2017-09-18 | 2017-12-12 | 海南电网有限责任公司电力科学研究院 | A kind of anti-induced voltage phase checking device of contactless transmission line of electricity |
| CN207965025U (en) * | 2018-02-05 | 2018-10-12 | 苏州工业园区海沃科技有限公司 | Contactless dead line earthing position detecting system |
-
2018
- 2018-02-05 CN CN201810110197.2A patent/CN108205097A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4982156A (en) * | 1988-09-02 | 1991-01-01 | Allied-Signal Inc. | Position transducer apparatus and associated circuitry including pulse energized primary winding and pair of waveform sampled secondary windings |
| CN106556774A (en) * | 2015-09-25 | 2017-04-05 | 浙江科畅电子有限公司 | Overhead transmission line grounding fault searching instrument |
| CN205246811U (en) * | 2015-12-21 | 2016-05-18 | 浙江科畅电子有限公司 | Portable line fault indicator tester |
| CN107462772A (en) * | 2017-09-18 | 2017-12-12 | 海南电网有限责任公司电力科学研究院 | A kind of anti-induced voltage phase checking device of contactless transmission line of electricity |
| CN207965025U (en) * | 2018-02-05 | 2018-10-12 | 苏州工业园区海沃科技有限公司 | Contactless dead line earthing position detecting system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820631A (en) * | 2021-08-23 | 2021-12-21 | 珠海优特电力科技股份有限公司 | Intelligent ground wire hanging and dismounting state recognition device and recognition method thereof |
| CN113820631B (en) * | 2021-08-23 | 2024-04-09 | 珠海优特电力科技股份有限公司 | Intelligent ground wire hanging and detaching state identification device and identification method thereof |
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