CN106771639A - High pressure pole tower ground resistance on-line monitoring system - Google Patents
High pressure pole tower ground resistance on-line monitoring system Download PDFInfo
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- CN106771639A CN106771639A CN201611153763.5A CN201611153763A CN106771639A CN 106771639 A CN106771639 A CN 106771639A CN 201611153763 A CN201611153763 A CN 201611153763A CN 106771639 A CN106771639 A CN 106771639A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/20—Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
- G01R27/205—Measuring contact resistance of connections, e.g. of earth connections
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Abstract
A kind of high pressure pole tower ground resistance on-line monitoring system that the present invention is provided, including constant-current supply, voltage processing circuitry, inverter circuit, power amplification circuit, trap circuit, coupling loader, voltage sensor PT, current sensor CT, control circuit and remote controllers；The output end of the constant-current supply is connected with the input of voltage processing circuitry, the output end of voltage processing circuitry is connected with the input of inverter circuit, the output end of the inverter circuit is connected with the input of power amplification circuit, the output end of power amplification circuit is connected with the input of trap circuit, the output end of trap circuit is connected with coupling loader, alternating current is loaded on the coupling loader anode of the earthing or grounding means of high pressure shaft tower, the voltage sensor PT is arranged at the anode of earthing or grounding means, current sensor CT is arranged at the negative terminal of earthing or grounding means, the output end of voltage sensor PT and current sensor CT is connected with control circuit, control circuit is communicated to connect with remote controllers, the constant-current supply is controllable constant-current power supply, the control end of the constant-current supply is connected with the order output terminal of control circuit.
Description
Technical field
The present invention relates to a kind of electric detection system, more particularly to a kind of high pressure pole tower ground resistance on-line monitoring system.
Background technology
High pressure shaft tower is the visual plant of transmission line of electricity, for being supported to overhead transmission line, is thrown in high pressure shaft tower
Enter when using, it is necessary to be grounded by grounding apparatus to high pressure shaft tower；However as the use of grounding apparatus, its ground connection can go out
Whether existing undesirable condition, high pressure tower grounding is well typically detected by earth resistance, when earth resistance is less than 10 ohm,
Then show that ground connection is good, otherwise imperfect earth, once there is the situation of imperfect earth in high pressure shaft tower, it will and cause power supply unit to miss
It is dynamic, cause accident of power supply；The earth resistance also not to transmission line of electricity carries out the means of effective detection in the prior art.
It is, therefore, desirable to provide a kind of high pressure pole tower ground resistance monitoring system, can enter to the earth resistance of high pressure shaft tower
Row accurate measurements simultaneously can in real time obtain Monitoring Data, can be prevented effectively from manpower, thing that manual inspection in conventional art is caused
The waste of power resource, effectively ensures that power transmission network continues safe and stable operation.
The content of the invention
In view of this, it is an object of the invention to provide a kind of high pressure pole tower ground resistance on-line monitoring system, can be to height
The earth resistance of depression bar tower carries out accurate measurements and can in real time obtain Monitoring Data, can be prevented effectively from conventional art artificial
The waste of the human and material resources resource for causing is patrolled and examined, effectively ensures that power transmission network continues safe and stable operation.
A kind of high pressure pole tower ground resistance on-line monitoring system that the present invention is provided, including constant-current supply, voltage treatment electricity
Road, inverter circuit, power amplification circuit, trap circuit, coupling loader, voltage sensor PT, current sensor CT, control electricity
Road and remote controllers；
The output end of the constant-current supply is connected with the input of voltage processing circuitry, the output end of voltage processing circuitry with
The input connection of inverter circuit, the output end of the inverter circuit is connected with the input of power amplification circuit, power amplification
The output end of circuit is connected with the input of trap circuit, and the output end of trap circuit is connected with coupling loader, the coupling
Alternating current is loaded on loader the anode of the earthing or grounding means of high pressure shaft tower, and the voltage sensor PT is arranged at earthing or grounding means
Anode, current sensor CT is arranged at the negative terminal of earthing or grounding means, output end and the control of voltage sensor PT and current sensor CT
Circuit connection processed, control circuit is communicated to connect with remote controllers, and the constant-current supply is controllable constant-current power supply, the Constant Electric Current
The control end in source is connected with the order output terminal of control circuit.
Further, also including power circuit, the power circuit is the DC/DC electricity with 5V voltages and 12V voltage outputs
Road, the 5V voltage output ends of the power circuit are connected with the power end of control circuit, at the input and voltage of power circuit
Manage the output end connection of circuit.
Further, the voltage processing circuitry includes resistance R1, resistance R2, electric capacity C1 and diode D1；
The output end of the constant-current supply is connected with one end of resistance R2, the other end of resistance R2 and the positive pole of diode D1
Connection, the negative pole of diode D1 is connected as the first output end of voltage processing circuitry with the input of inverter circuit, the perseverance
Stream power supply is grounded with the points of common connection of resistance R2 by resistance R1, and the points of common connection of resistance R2 and diode D1 passes through electric capacity
C1 is grounded, and the points of common connection of resistance R2 and diode D1 is defeated with power circuit as the second output end of voltage processing circuitry
Enter end connection.
Further, the coupling loader includes ring-type iron core and is wound on the coil of ring-type iron core, ring-type iron core overcoat
In in the anode connecting wire of earthing or grounding means, the two ends of coil are connected with the positive output end of trap circuit and negative output terminal.
Further, also including protection location, the protection location includes contactor J1 and controllable silicon SCR 1, contactor J1's
One end of coil is connected with the negative electrode of controllable silicon SCR 1, the coil other end ground connection of contactor J1, the normally closed switch of contactor J1
K1 is arranged at trap circuit and couples between loader, and the anode of controllable silicon SCR 1 is connected to the 12V output ends of power circuit, can
The control pole of control silicon SCR1 is connected with control circuit.
Further, the trap circuit leaches the voltage signal of 50Hz and 50Hz integral multiples.
Beneficial effects of the present invention：High pressure pole tower ground resistance on-line monitoring system of the invention, can be to high pressure shaft tower
Earth resistance carry out accurate measurements and can in real time obtain Monitoring Data, manual inspection is made in being prevented effectively from conventional art
Into human and material resources resource waste, effectively ensure power transmission network continue safe and stable operation.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is schematic diagram of the invention.
Fig. 2 is the structure chart of coupling loader of the invention.
Specific embodiment
Fig. 1 is schematic diagram of the invention, a kind of high pressure pole tower ground resistance on-line monitoring system for providing of the invention, including
Constant-current supply, voltage processing circuitry, inverter circuit, power amplification circuit, trap circuit, coupling loader, voltage sensor PT,
Current sensor CT, control circuit and remote controllers；
The output end of the constant-current supply is connected with the input of voltage processing circuitry, the output end of voltage processing circuitry with
The input connection of inverter circuit, the output end of the inverter circuit is connected with the input of power amplification circuit, power amplification
The output end of circuit is connected with the input of trap circuit, and the output end of trap circuit is connected with coupling loader, the coupling
Alternating current is loaded on loader the anode of the earthing or grounding means of high pressure shaft tower, and the voltage sensor PT is arranged at earthing or grounding means
Anode, current sensor CT is arranged at the negative terminal of earthing or grounding means, output end and the control of voltage sensor PT and current sensor CT
Circuit connection processed, control circuit is communicated to connect with remote controllers, and the constant-current supply is controllable constant-current power supply, the Constant Electric Current
The control end in source is connected with the order output terminal of control circuit, by said structure, the earth resistance of high pressure shaft tower can be entered
Row accurate measurements simultaneously can in real time obtain Monitoring Data, can be prevented effectively from manpower, thing that manual inspection in conventional art is caused
The waste of power resource, effectively ensures that power transmission network continues safe and stable operation.
Wherein, voltage sensor PT and current sensor are respectively used to detect the voltage and current signal of earthing or grounding means, and
It is input in control circuit, the frequency of control circuit analysis voltage signal and current signal excludes power frequency component and integral multiple
In the voltage signal and current signal of power frequency component, earth resistance is then calculated according to voltage signal and current signal, work as ground connection
Resistance is more than 10 ohm, generates alarm signal, if less than 10 ohm, then exports corresponding Monitoring Data to remote controllers；
The trap circuit leaches the voltage signal of 50Hz and 50Hz integral multiples, and trap circuit uses existing circuit, inverter circuit
The voltage signal frequency of output is controlled by control circuit, and control circuit uses existing single-chip microcomputer, remote controllers to use industry control
Main frame, certainly equipped with corresponding display and order keyboard, belongs to prior art, and remote controllers are with control circuit by moving
Dynamic communication module connection, such as 3G module, 4G modules etc.
In the present embodiment, also including power circuit, the power circuit is the DC/ with 5V voltages and 12V voltage outputs
DC circuits, the 5V voltage output ends of the power circuit are connected with the power end of control circuit, input and the electricity of power circuit
The output end connection of process circuit is pressed, by this structure, the work electricity consumption of stabilization can be exported to control circuit and protection
Unit.
In the present embodiment, the voltage processing circuitry includes resistance R1, resistance R2, electric capacity C1 and diode D1；
The output end of the constant-current supply is connected with one end of resistance R2, the other end of resistance R2 and the positive pole of diode D1
Connection, the negative pole of diode D1 is connected as the first output end of voltage processing circuitry with the input of inverter circuit, the perseverance
Stream power supply is grounded with the points of common connection of resistance R2 by resistance R1, and the points of common connection of resistance R2 and diode D1 passes through electric capacity
C1 is grounded, and the points of common connection of resistance R2 and diode D1 is defeated with power circuit as the second output end of voltage processing circuitry
Enter end connection, by said structure, be on the one hand converted to voltage for the electric current for exporting constant-current supply, on the other hand can filter
Go out interference signal, and diode D1 can play a part of good protection to constant-current supply.
In the present embodiment, the coupling loader includes ring-type iron core 1 and is wound on the coil 2 of ring-type iron core, ring-type iron
Core 1 is coated in the anode connecting wire 3 of earthing or grounding means, the two ends of coil 2 and the positive output end of trap circuit and negative output terminal
Connection, as shown in Fig. 2 by this structure, in earthing or grounding means, conveniently tested beneficial to by signal loading, wherein, it is attached in Fig. 2
Icon note 3 is between earthing or grounding means and shaft tower.
In the present embodiment, also including protection location, the protection location includes contactor J1 and controllable silicon SCR 1, contactor
One end of the coil of J1 is connected with the negative electrode of controllable silicon SCR 1, the coil other end ground connection of contactor J1, and contactor J1's is normally closed
Switch K1 is arranged at trap circuit and couple between loader, and the 12V that the anode of controllable silicon SCR 1 is connected to power circuit is exported
End, the control pole of controllable silicon SCR 1 is connected with control circuit, and when there is thunder-strike current, voltage sensor and current sensor are defeated
Go out the signal much larger than secure threshold, the SCR1 conductings of control circuit controling thyristor, contactor work, the switch K1 of contactor J1
Disconnect, so as to prevent lightning current from flowing backwards, after lightning current is released, control circuit control constant-current supply is in temporary transient resting state,
The now civil power of controllable silicon SCR 1, the switch K1 of contactor J1 is re-closed, and by said structure, can form good protection
Effect.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to skill of the invention
Art scheme is modified or equivalent, and without deviating from the objective and scope of technical solution of the present invention, it all should cover at this
In the middle of the right of invention.
Claims (6)
1. a kind of high pressure pole tower ground resistance on-line monitoring system, it is characterised in that：Including constant-current supply, voltage processing circuitry,
Inverter circuit, power amplification circuit, trap circuit, coupling loader, voltage sensor PT, current sensor CT, control circuit
And remote controllers；
The output end of the constant-current supply is connected with the input of voltage processing circuitry, the output end of voltage processing circuitry and inversion
The input connection of circuit, the output end of the inverter circuit is connected with the input of power amplification circuit, power amplification circuit
Output end be connected with the input of trap circuit, the output end of trap circuit be connected with coupling loader, and the coupling is loaded
Alternating current is loaded on device the anode of the earthing or grounding means of high pressure shaft tower, and the voltage sensor PT is being arranged at earthing or grounding means just
End, current sensor CT is arranged at the negative terminal of earthing or grounding means, output end and the control of voltage sensor PT and current sensor CT
Circuit is connected, and control circuit is communicated to connect with remote controllers, and the constant-current supply is controllable constant-current power supply, the constant-current supply
Control end with control circuit order output terminal be connected.
2. high pressure pole tower ground resistance on-line monitoring system according to claim 1, it is characterised in that：Also include power supply electricity
Road, the power circuit is the DC/DC circuits with 5V voltages and 12V voltage outputs, the 5V voltage outputs of the power circuit
Hold and be connected with the power end of control circuit, the input of power circuit is connected with the output end of voltage processing circuitry.
3. high pressure pole tower ground resistance on-line monitoring system according to claim 2, it is characterised in that：The voltage treatment electricity
Road includes resistance R1, resistance R2, electric capacity C1 and diode D1；
The output end of the constant-current supply is connected with one end of resistance R2, and the other end of resistance R2 connects with the positive pole of diode D1
Connect, the negative pole of diode D1 is connected as the first output end of voltage processing circuitry with the input of inverter circuit, the constant current
Power supply is grounded with the points of common connection of resistance R2 by resistance R1, and the points of common connection of resistance R2 and diode D1 passes through electric capacity C1
Ground connection, the points of common connection of resistance R2 and diode D1 is used as the second output end of voltage processing circuitry and the input of power circuit
End connection.
4. high pressure pole tower ground resistance on-line monitoring system according to claim 1, it is characterised in that：The coupling loader
Including ring-type iron core and the coil for being wound on ring-type iron core, ring-type iron core is coated in the anode connecting wire of earthing or grounding means, line
The two ends of circle are connected with the positive output end of trap circuit and negative output terminal.
5. high pressure pole tower ground resistance on-line monitoring system according to claim 2, it is characterised in that：Also include that protection is single
Unit, the protection location includes contactor J1 and controllable silicon SCR 1, one end of the coil of contactor J1 and the moon of controllable silicon SCR 1
Pole connects, and the coil other end ground connection of contactor J1, the normally closed switch K1 of contactor J1 is arranged at trap circuit and couples loading
Between device, the anode of controllable silicon SCR 1 is connected to the 12V output ends of power circuit, control pole and the control circuit of controllable silicon SCR 1
Connection.
6. high pressure pole tower ground resistance on-line monitoring system according to claim 1, it is characterised in that：The trap circuit filter
Go out the voltage signal of 50Hz and 50Hz integral multiples.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611153763.5A CN106771639B (en) | 2016-12-14 | 2016-12-14 | High pressure pole tower ground resistance on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611153763.5A CN106771639B (en) | 2016-12-14 | 2016-12-14 | High pressure pole tower ground resistance on-line monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106771639A true CN106771639A (en) | 2017-05-31 |
| CN106771639B CN106771639B (en) | 2019-11-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201611153763.5A Active CN106771639B (en) | 2016-12-14 | 2016-12-14 | High pressure pole tower ground resistance on-line monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907745A (en) * | 2017-12-31 | 2018-04-13 | 广东立信防雷科技有限公司 | A kind of earth resistance tester and its grounding monitor method |
| CN109030951A (en) * | 2018-08-27 | 2018-12-18 | 云南电网有限责任公司电力科学研究院 | A kind of on-line measurement system and method for shared electric power tower ground resistance |
| CN109490635A (en) * | 2018-12-25 | 2019-03-19 | 国网江苏省电力有限公司南京供电分公司 | Pole tower ground resistance on-line monitoring system and on-line monitoring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107907745A (en) * | 2017-12-31 | 2018-04-13 | 广东立信防雷科技有限公司 | A kind of earth resistance tester and its grounding monitor method |
| CN109030951A (en) * | 2018-08-27 | 2018-12-18 | 云南电网有限责任公司电力科学研究院 | A kind of on-line measurement system and method for shared electric power tower ground resistance |
| CN109490635A (en) * | 2018-12-25 | 2019-03-19 | 国网江苏省电力有限公司南京供电分公司 | Pole tower ground resistance on-line monitoring system and on-line monitoring method |
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| CN106771639B (en) | 2019-11-15 |
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Effective date of registration: 20190917 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: STATE GRID CORPORATION OF CHINA Applicant after: MAINTENANCE BRANCH OF STATE GRID CHONGQING ELECTRIC POWER Co. Applicant after: BEIBEI POWER SUPPLY BRANCH OF STATE GRID CHONGQING ELECTRIC POWER Co. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Grid Corporation of China Applicant before: MAINTENANCE BRANCH OF STATE GRID CHONGQING ELECTRIC POWER Co. |
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