CN106199094A - A kind of direct current for 35KV overhead transmission line tries to send instrument - Google Patents
A kind of direct current for 35KV overhead transmission line tries to send instrument Download PDFInfo
- Publication number
- CN106199094A CN106199094A CN201610554122.4A CN201610554122A CN106199094A CN 106199094 A CN106199094 A CN 106199094A CN 201610554122 A CN201610554122 A CN 201610554122A CN 106199094 A CN106199094 A CN 106199094A
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- module
- telecommunication
- circuit
- detected
- transmission line
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
-
- 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 direct current for 35KV overhead transmission line to try to send instrument, relate to power cable detection technique field, the highest exportable 35KV DC detecting signal of telecommunication, solve a difficult problem for current high-tension line detection；Detection method is simple, easy to operate, saves the working time；Having self-protection function, safety coefficient is high.Drip irrigation device is: power transfer module obtains the power supply signal of telecommunication and changes；Boost module carries out boost conversion, obtains the detection signal of telecommunication；Export via output module, put on circuit to be detected；Judge module obtains real-time tele-communication parameter, it is judged that whether circuit to be detected exists fault.Present invention is mainly used in high-tension line detection.
Description
Technical field
The present invention relates to power cable detection technique field, particularly relate to a kind of direct current for 35KV overhead transmission line and try to send
Instrument.
Background technology
After power cable is electrified pressure, insulation but be not the most non-conductive, have ion displacement, meeting inside it
Produce faint electric current, be leakage current.The size of Leakage Current is relevant, due to south China with the insulating properties power of cable
Air humidity is big so that the insulating properties of cable weakens, and leakage current increases；The size of leakage current also with apply voltage levels
Relevant, apply voltage the highest, leakage current is the biggest.Therefore, a instrument being capable of the examination censorship survey of south China high-tension line
Device is the important topic of technical staff's research and development instantly.
Existing typically by making an inspection tour completely or utilizing High-Voltage Insulation megger to realize the survey of the examination censorship to high-tension line.Wherein
High-Voltage Insulation megger send detection method, i.e. Insulation test relative method, connects insulation resistance, insulated by judgement on high-tension line
Ohmically electrical quantity completes the examination censorship to high-tension line and surveys.
Realizing the survey of the examination censorship to high-tension line above by making an inspection tour completely, workload is huge, expends man-hour, and detection knot
Fruit is accurately；Utilizing High-Voltage Insulation megger that high-tension line carries out try censorship to survey, output voltage is low, and the scope of application is little, it is impossible to realize
The complete detection of whole high-tension line.
Summary of the invention
A kind of direct current for 35KV overhead transmission line that the present invention provides tries to send instrument, the highest exportable 35KV DC detecting electricity
Signal, solves a difficult problem for current high-tension line detection；Detection method is simple, easy to operate, saves the working time；Have certainly
Defencive function, safety coefficient is high.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
The present invention provides a kind of direct current for 35KV overhead transmission line to try to send instrument, including: power transfer module, boost module, defeated
Go out module, read module and judge module；
Described power transfer module is connected with described boost module, and described power transfer module obtains the power supply signal of telecommunication, and to institute
State the power supply signal of telecommunication to change；After described boost module will be changed, the described power supply signal of telecommunication boosts, and obtains the detection signal of telecommunication；Institute
Stating boost module to be connected with described output module, the described detection signal of telecommunication exports via described output module, in order to puts on and treats
Detection circuit；
Described read module is connected with described output module, and described read module is divided into voltage to read unit and electric current reads single
Unit, is respectively used to read the voltage data on described circuit to be detected and current data；
Described judge module is connected with described read module, is used for judging whether described circuit to be detected exists fault: if described
Described voltage data on circuit to be detected and the proportional linear change of described current data, the most described circuit to be detected does not exists
Fault；If the described voltage data on described circuit to be detected and described current data are nonlinear change, and described electric current number
According to tending to infinitely great, there is fault in the most described circuit to be detected.
In conjunction with above-mentioned, described power transfer module includes: connect unit and pressure regulation unit；Described connection unit obtains described
The power supply signal of telecommunication, the described power supply signal of telecommunication is changed by described pressure regulation unit.
In conjunction with above-mentioned, described detection electrical signal voltage output area is 0 kilovolt 35 kilovolts, and range of current output is 0 milli
Pacify 15 milliamperes.
In conjunction with above-mentioned, further, the described direct current for 35KV overhead transmission line tries to send instrument, also includes: protection module；
Described protection module is connected with described judge module, when described circuit to be detected exists fault, starts described protection mould
Block cuts off the output of the described detection signal of telecommunication.
In conjunction with above-mentioned, further, the described direct current for 35KV overhead transmission line tries to send instrument, also includes: automatic discharging
Module；
Described automatic discharging module is connected with described judge module, when described judge module judges whether described circuit to be detected is deposited
After a failure, described automatic discharging module is discharged.
In conjunction with above-mentioned, it is voltmeter that described voltage reads unit；It is ammeter that described electric current reads unit.
In conjunction with above-mentioned, described automatic discharging module is realized by the electrical connection of discharge tube and capacitor, and is parallel to described
On circuit to be detected.
In conjunction with above-mentioned, the described power supply signal of telecommunication that described connection unit obtains is alternating current 220V.
In conjunction with above-mentioned, the described power supply signal of telecommunication is converted to exchange the 0 V 220V signal of telecommunication by described pressure regulation unit.
In conjunction with above-mentioned, described boost module is multistage Cascade rectification circuit.
A kind of direct current for 35KV overhead transmission line that the present invention provides tries to send instrument, including: power transfer module obtains and supplies
The electricity signal of telecommunication is also changed；Boost module carries out boost conversion, obtains the detection signal of telecommunication；Export via output module, apply
In circuit to be detected；Judge module obtains real-time tele-communication parameter, it is judged that whether circuit to be detected exists fault, compared to existing
Technology, the highest exportable 35KV DC detecting signal of telecommunication of the present invention, solve a difficult problem for current high-tension line detection；Detection method
Simply, easy to operate, save the working time；Having self-protection function, safety coefficient is high.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required use in below embodiment being described
Accompanying drawing be briefly described.
Fig. 1 is that in the embodiment of the present invention 1, a kind of direct current for 35KV overhead transmission line tries to send instrument structure to form schematic diagram；
Fig. 2 is that in the embodiment of the present invention 1, a kind of direct current for 35KV overhead transmission line tries to send instrument boost module circuit to connect signal
Figure；
Fig. 3 is that in the embodiment of the present invention 2, a kind of direct current for 35KV overhead transmission line tries to send instrument structure to form schematic diagram；
Fig. 4 is that in the embodiment of the present invention 2, a kind of direct current for 35KV overhead transmission line tries to send instrument automatic discharging element circuit to connect
Schematic diagram.
In figure, 1. power transfer module, 11. connection unit, 12. pressure regulation unit, 2. boost module, 3. output modules, 4.
Read module, 41. voltages read unit, and 42. electric currents read unit, 5. judge module, 6. protection module, 7. automatic discharging mould
Block.
Detailed description of the invention
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
Describe wholely.Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Embodiment 1
The embodiment of the present invention provides a kind of direct current for 35KV overhead transmission line to try to send instrument, as it is shown in figure 1, power transfer module 1,
Boost module 2, output module 3, read module 4 and judge module 5.
Described power transfer module 1 is connected with described boost module 2, and described power transfer module 1 comprises connection unit 11
With pressure regulation unit 12；Described connection unit 11 obtains the described power supply signal of telecommunication, and described pressure regulation unit 12 is to the described power supply signal of telecommunication
Change；After described boost module 2 will be changed, the described power supply signal of telecommunication boosts, and obtains the detection signal of telecommunication；Described boost module 2
Being connected with described output module 3, the described detection signal of telecommunication exports via described output module 3, in order to put on circuit to be detected.
Wherein, the present embodiment uses household AC 220V for the power supply signal of telecommunication, connects unit 11 by connecting alternating current 220V
Delivery outlet obtains alternating current 220V and powers the signal of telecommunication, and it is 0 ~ 220V signal of telecommunication that alternating current 220V is converted to scope by pressure regulation unit 12.
As in figure 2 it is shown, boost module 2 is multistage Cascade rectification circuit, according to the difference of required voltage, times piezoelectricity of different progression
Road is connected in series composition tandem DC high-voltage circuit, Cascade Output Voltage in Rectified Circuits formula:, wherein: Ud is output voltage,
The i.e. voltage of the detection signal of telecommunication in the present embodiment, n is tandem multiple, and U2 is 0 ~ 220V in primary voltage, i.e. the present embodiment
The signal of telecommunication, K is the pressure regulation ratio of pressure regulation unit 12, is the ratio of real-time pressure regulation output valve and 220, such as: pressure regulation unit 12 will
Alternating current 220V telecommunication signal of powering is converted to 110V ac signal, then K=110/220=0.5.Boost module 2 is by adjusting accordingly
0 ~ 220V signal of telecommunication is boosted to detect the signal of telecommunication by joint tandem multiple, and the detection signal of telecommunication exports via output module 3, in order to apply
In circuit to be detected.
It should be understood that the present embodiment detection signal of telecommunication scope is: voltage output range is 0 kilovolt 35 kilovolts, electricity
Stream output area is 0 milliampere 15 milliamperes, when detecting, usually, makes detection electrical signal voltage value ascending gradually
Increasing, therefore boost module 2 is the detection electrical signal voltage numerical value boosting to 0 ~ 220V ac signal preset in real time.
Described read module 4 is connected with described output module 3, and described read module 4 is divided into voltage to read unit 41 and electricity
Stream reads unit 42, and correspondence reads described line voltage distribution data to be detected and current data respectively.
Wherein, described voltage reads unit 41 is voltmeter；It is ammeter that described electric current reads unit 42.
Described judge module 5 is connected with described read module 4, is used for judging whether described circuit to be detected exists fault:
If the described voltage data on described circuit to be detected and the proportional linear change of described current data, the most described circuit to be detected
There is not fault；If the described voltage data on described circuit to be detected and described current data are nonlinear change, and described
Current data tends to infinitely great, and the most described circuit to be detected exists fault.
Wherein, make when detecting that the voltage of the output detections signal of telecommunication is ascending to be gradually increased, because survey line to be checked
The resistance value on road is changeless, if circuit to be detected is normal, the electric current on circuit the most to be detected can be with the increase of voltage
And proportional linear change.Judge module 5 obtains voltage data and the real-time current data that read module 4 reads, and judges:
If the voltage data on circuit to be detected and the proportional linear change of current data, there is not fault in circuit the most to be detected；If treating
Voltage data on detection circuit is nonlinear change with current data, and current data tends to infinitely great, circuit the most to be detected
There is fault.
A kind of direct current for 35KV overhead transmission line that the present invention provides tries to send instrument, including: power transfer module obtains and supplies
The electricity signal of telecommunication is also changed；Boost module carries out boost conversion, obtains the detection signal of telecommunication；Export via output module, apply
In circuit to be detected；Judge module obtains real-time tele-communication parameter, it is judged that whether circuit to be detected exists fault, compared to existing
Technology, the highest exportable 35KV DC detecting signal of telecommunication of the present invention, solve a difficult problem for current high-tension line detection；Detection method
Simply, easy to operate, save the working time；Having self-protection function, safety coefficient is high.
Embodiment 2
The embodiment of the present invention provides a kind of direct current for 35KV overhead transmission line to try to send instrument, as it is shown on figure 3, include: Power convert
Module 1, boost module 2, output module 3, read module 4, it is judged that module 5, protection module 6 and automatic discharging module 7.
Described power transfer module 1 is connected with described boost module 2, and described power transfer module 1 obtains the power supply signal of telecommunication,
And the described power supply signal of telecommunication is changed；After described boost module 2 will be changed, the described power supply signal of telecommunication boosts, and obtains detection electricity
Signal；Described boost module 2 is connected with described output module 3, and the described detection signal of telecommunication exports via described output module 3, with
Just circuit to be detected is put on；
Described read module 4 is connected with described output module 3, and described read module 4 is divided into voltage to read unit 41 and electric current is read
Take unit 42, be respectively used to read the voltage data on described circuit to be detected and current data；
Described judge module 5 is connected with described read module 4, is used for judging whether described circuit to be detected exists fault: if institute
Stating the described voltage data on circuit to be detected and the proportional linear change of described current data, the most described circuit to be detected is not deposited
In fault；If the described voltage data on described circuit to be detected and described current data are nonlinear change, and described electric current
Data tend to infinitely great, and the most described circuit to be detected exists fault.
Herein need explanation: power transfer module 1, boost module 2, output module 3, read module 4 and judge module 5
Here is omitted for related content, refers to embodiment 1 corresponding content.
Described protection module 6 is connected with described judge module 5, when circuit to be detected exists fault, starts described protection
Module 6 cuts off the output of the described detection signal of telecommunication.
As shown in Figure 4, after completing wireline inspection to be detected, automatic discharging module 7 is to instrument of the present invention and survey line to be checked
Discharge in road, in order to Keep Clear-High Voltage in elimination.Automatic discharging module 7 uses discharge tube F and capacitor C electrical connection, is parallel to treat
On detection circuit.It is parallel to the switch K at ammeter two ends for short circuit microampere meter, only opens when starting instrument and testing；
Capacitor C and discharge tube F is used for shunting the short circuit current of circuit to be detected；The resistance R connected with ammeter is used for producing voltage,
When making the electric current flowing through ammeter reach certain value, discharge tube punctures, and it is ammeter that the resistance of R is typically chosen as flowing through its electric current
Ull-scale value time, voltage thereon is equal to the breakdown voltage of discharge tube F.
A kind of direct current for 35KV overhead transmission line that the present invention provides tries to send instrument, including: power transfer module obtains and supplies
The electricity signal of telecommunication is also changed；Boost module carries out boost conversion, obtains the detection signal of telecommunication；Export via output module, apply
In circuit to be detected；Judge module obtains real-time tele-communication parameter, it is judged that whether circuit to be detected exists fault, when determining existence
During fault, starting protection module cuts off detection High voltage output, and after completing detection, automatic discharging module is discharged, and eliminates high pressure
Danger, compared to prior art, the highest exportable 35KV DC detecting signal of telecommunication of the present invention, solve the detection of current high-tension line
A difficult problem；Detection method is simple, easy to operate, saves the working time；Having self-protection function, safety coefficient is high.
Further, the embodiment of the present invention adds protection module and automatic discharging module, has ensured personal safety, safety
Coefficient is high.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art in the technical scope that the invention discloses, the change that can readily occur in or replacement, all answer
Contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with described scope of the claims
Accurate.
Claims (10)
1. the direct current for 35KV overhead transmission line tries to send instrument, it is characterised in that including: power transfer module (1), rises pressing mold
Block (2), output module (3), read module (4) and judge module (5)；
Described power transfer module (1) is connected with described boost module (2), and described power transfer module (1) obtains power supply telecommunications
Number, and the described power supply signal of telecommunication is changed；After described boost module (2) will be changed, the described power supply signal of telecommunication boosts, and obtains
The detection signal of telecommunication；Described boost module (2) is connected with described output module (3), and the described detection signal of telecommunication is via described output mould
Block (3) exports, in order to put on circuit to be detected；
Described read module (4) is connected with described output module (3), and described read module (4) is divided into voltage to read unit (41)
Read unit (42) with electric current, be respectively used to read the voltage data on described circuit to be detected and current data；
Described judge module (5) is connected with described read module (4), is used for judging whether described circuit to be detected exists fault:
If the described voltage data on described circuit to be detected and the proportional linear change of described current data, the most described circuit to be detected
There is not fault；If the described voltage data on described circuit to be detected and described current data are nonlinear change, and described
Current data tends to infinitely great, and the most described circuit to be detected exists fault.
Direct current for 35KV overhead transmission line the most according to claim 1 tries to send instrument, it is characterised in that described Power convert
Module (1) including: connects unit (11) and pressure regulation unit (12)；Described connection unit (11) obtains the described power supply signal of telecommunication, institute
State pressure regulation unit (12) the described power supply signal of telecommunication is changed.
Direct current for 35KV overhead transmission line the most according to claim 1 tries to send instrument, it is characterised in that:
Described detection electrical signal voltage output area is 0 kilovolt 35 kilovolts, and range of current output is 0 milliampere 15 milliamperes.
Direct current for 35KV overhead transmission line the most according to claim 1 tries to send instrument, it is characterised in that also include: protection
Module (6)；
Described protection module (6) is connected with described judge module (5), when described circuit to be detected exists fault, starts described
The output of the described detection signal of telecommunication is cut off in protection module (6).
Direct current for 35KV overhead transmission line the most according to claim 1 tries to send instrument, it is characterised in that also include: automatically
Discharge module (7)；
Described automatic discharging module (7) is connected with described judge module (5), when described judge module (5) judges described to be detected
Whether circuit is deposited after a failure, and described automatic discharging module (7) is discharged.
Direct current for 35KV overhead transmission line the most according to claim 1 tries to send instrument, it is characterised in that:
It is voltmeter that described voltage reads unit (41)；It is ammeter that described electric current reads unit (42).
Direct current for 35KV overhead transmission line the most according to claim 5 tries to send instrument, it is characterised in that:
Described automatic discharging module (7) is realized by the electrical connection of discharge tube and capacitor, and is parallel to described circuit to be detected
On.
Direct current for 35KV overhead transmission line the most according to claim 2 tries to send instrument, it is characterised in that:
The described power supply signal of telecommunication that described connection unit (11) obtains is alternating current 220V.
Direct current for 35KV overhead transmission line the most according to claim 2 tries to send instrument, it is characterised in that: described pressure regulation unit
(12) be converted to the described power supply signal of telecommunication exchange the 0 V 220V signal of telecommunication.
Direct current for 35KV overhead transmission line the most according to claim 1 tries to send instrument, it is characterised in that:
Described boost module (2) is multistage Cascade rectification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610554122.4A CN106199094A (en) | 2016-07-14 | 2016-07-14 | A kind of direct current for 35KV overhead transmission line tries to send instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610554122.4A CN106199094A (en) | 2016-07-14 | 2016-07-14 | A kind of direct current for 35KV overhead transmission line tries to send instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106199094A true CN106199094A (en) | 2016-12-07 |
Family
ID=57475047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610554122.4A Pending CN106199094A (en) | 2016-07-14 | 2016-07-14 | A kind of direct current for 35KV overhead transmission line tries to send instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN106199094A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579920A (en) * | 2020-04-17 | 2020-08-25 | 深圳供电局有限公司 | Fault detection device and method |
| CN113219299A (en) * | 2021-04-19 | 2021-08-06 | 深圳供电局有限公司 | Portable comprehensive diagnosis device for distribution line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102981092A (en) * | 2012-11-15 | 2013-03-20 | 广东电网公司肇庆供电局 | Detecting device of electric transmission circuit ground connection state |
| CN203249975U (en) * | 2013-04-26 | 2013-10-23 | 广西电网公司柳州供电局 | DC transmission instrument |
| JP2013257150A (en) * | 2012-06-11 | 2013-12-26 | Mitsubishi Electric Corp | Insulation defect position locating device and insulation defect position locating method for power cable |
| CN205139284U (en) * | 2015-10-10 | 2016-04-06 | 珠海润科电力设备有限公司 | Instrument is sent in direct current examination |
-
2016
- 2016-07-14 CN CN201610554122.4A patent/CN106199094A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013257150A (en) * | 2012-06-11 | 2013-12-26 | Mitsubishi Electric Corp | Insulation defect position locating device and insulation defect position locating method for power cable |
| CN102981092A (en) * | 2012-11-15 | 2013-03-20 | 广东电网公司肇庆供电局 | Detecting device of electric transmission circuit ground connection state |
| CN203249975U (en) * | 2013-04-26 | 2013-10-23 | 广西电网公司柳州供电局 | DC transmission instrument |
| CN205139284U (en) * | 2015-10-10 | 2016-04-06 | 珠海润科电力设备有限公司 | Instrument is sent in direct current examination |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579920A (en) * | 2020-04-17 | 2020-08-25 | 深圳供电局有限公司 | Fault detection device and method |
| CN113219299A (en) * | 2021-04-19 | 2021-08-06 | 深圳供电局有限公司 | Portable comprehensive diagnosis device for distribution line |
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Application publication date: 20161207 |