CN106705937A - Differential-capacitor-based voltage tower inclination monitoring system and method - Google Patents
Differential-capacitor-based voltage tower inclination monitoring system and method Download PDFInfo
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- CN106705937A CN106705937A CN201611148147.0A CN201611148147A CN106705937A CN 106705937 A CN106705937 A CN 106705937A CN 201611148147 A CN201611148147 A CN 201611148147A CN 106705937 A CN106705937 A CN 106705937A
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- resonance
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- 239000003990 capacitor Substances 0.000 title claims abstract description 38
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 230000003321 amplification Effects 0.000 claims description 12
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 12
- 238000011068 load Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 230000001808 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 abstract 3
- 238000005259 measurement Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000000737 periodic Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/02—Details
- G01C9/06—Electric or photoelectric indication or reading means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/02—Details
- G01C9/06—Electric or photoelectric indication or reading means
- G01C2009/062—Electric or photoelectric indication or reading means capacitive
Abstract
The invention provides a differential-capacitor-based voltage tower inclination monitoring system which comprises a signal generation unit, a resonance unit and a detection unit, wherein the resonance unit is used for receiving an alternating current signal generated by the signal generation unit to enter resonance, and outputting a resonance signal; the detection unit is used for receiving the resonance signal output by the resonance unit, and judging whether the high-pressure tower is inclined according to the resonance signal frequency changes; the resonance unit comprises a coil L1, a capacitor C1 and two plate-type capacitors; first pole plates of the two plate-type capacitors are fixed to both sides of the high-pressure tower, and are parallel and opposite each other; second pole plates of the two plate-type capacitors are respectively opposite the first pole plates of the respective capacitors; one end of the coil L1 is connected with the output end of the signal generation unit, and the other end is connected to the ground through the capacitor C1; the common connection point of the coil L1 and capacitor C1 is connected with the second pole plate of one plate-type capacitor, and the second pole plate of the other plate-type capacitor is connected to the ground; and the common connection point of the coil L1 and capacitor C1 is used as the output end of the resonance unit. The system can be used for accurately monitoring the inclination state of the high-pressure tower.
Description
Technical field
The present invention relates to the monitoring device and its method of power equipment, more particularly to a kind of voltage bar based on differential capacitance
Tower inclines monitoring system and its method.
Background technology
High pressure shaft tower be for supporting the device of the power supply units such as power transmission line, insulator in power transmission network, high pressure shaft tower it is steady
Solidity is related to power transmission network safe operation, accordingly, it would be desirable to accurately be supervised to the state of high pressure shaft tower, especially heeling condition
Survey, once discovery must be repaired immediately, can otherwise cause serious power outage and then form serious economic loss；It is existing
Have in technology, typically whether high pressure shaft tower is inclined and is typically detected by manual type, efficiency is low, poor real, and
Manual inspection is all periodic duty, often there is shaft tower run-off the straight manually also without cyclic in-position measuring, although people it is also proposed that
On-line checking mode, but because the interference by environment is larger, cause monitoring result inaccurate.
It is, therefore, desirable to provide a kind of new high pressure shaft tower inclines monitoring system, the heeling condition of high pressure shaft tower can be entered
Row accurate measurements, exclude environmental disturbances, beneficial to dispatching of power netwoks make accurately reply treatment measures, and effectively reduce manpower,
Material resources cost, improves monitoring efficiency, and with extremely strong real-time.
The content of the invention
In view of this, monitoring system, energy are inclined it is an object of the invention to provide a kind of high pressure shaft tower based on differential capacitance
Enough heeling conditions to high pressure shaft tower carry out accurate measurements, exclude environmental disturbances, are made at accurate reply beneficial to dispatching of power netwoks
Reason measure, and human and material resources cost is effectively reduced, monitoring efficiency is improved, and with extremely strong real-time.
A kind of high pressure shaft tower based on differential capacitance that the present invention is provided inclines monitoring system, including：
Signal generating unit, for producing sinusoidal ac signal and exporting；
Resonant element, resonance, and export resonance signal are entered for receiving the AC signal produced by signal generating unit；
Detection unit, the resonance signal for receiving resonant element output, and judge high according to the change of resonance signal frequency
Whether depression bar tower inclines；
The resonant element includes coil L1, electric capacity C1 and two plate capacitors, two the first pole plates of plate capacitor
It is fixedly installed on both sides of high pressure shaft tower and parallel just right；Second pole plate of two plate capacitors is right against each self-capacitance respectively
First pole plate is set；One end of coil L1 is connected with the output end of signal generating unit, and the other end is grounded by electric capacity C1, coil
Points of common connection between L1 and electric capacity C1 is connected with the second pole plate of one of plate capacitor, and the second of another plate capacitor
Pole plate is grounded, the points of common connection of coil L1 and electric capacity C1 as resonant element output end.
Further, the signal generating unit includes：
Signal generating circuit, for producing sinusoidal ac signal and exporting；
Power amplification circuit, puts for being amplified to process and export to the sinusoidal ac signal that signal generating circuit is exported
Big signal；
Coupler, for by the amplification signal loading of power amplification circuit output end in resonant element.
Further, the coupler is that no-load voltage ratio is 1:1 transformer.
Further, the signal generating unit also includes filter circuit I, and input and the power of the filter circuit I are put
The output end of big circuit, the output end of filter circuit I is connected with the input of coupler.
Further, the detection unit includes：
Rectification circuit, its input is connected with the output end of resonant element, for the resonance signal exported to resonance circuit
Carry out rectification and export direct current signal；
Filter circuit II, its input is connected with the output end of rectification circuit, enters for the direct current signal to rectification circuit
Row filtering；
Frequency detection circuit, its input is connected with the output end of filter circuit, for the signal exported to filter circuit
Carry out frequency detecting；
Whether central processing circuit, frequency signal and determination frequency for receives frequency detection circuit output change, such as
Change, then export warning message.
Correspondingly, monitoring method is inclined present invention also offers a kind of high pressure shaft tower based on differential capacitance, including it is as follows
Step：
S1. differential capacitance is arranged in high pressure shaft tower：Differential capacitance is two plate capacitors composition, the of two plate capacitors
One pole plate is fixedly installed on both sides of high pressure shaft tower and parallel just right；Second pole plate of two plate capacitors is right against each respectively
First pole plate of electric capacity is set；
S2. differential capacitance is connected in LC resonant tanks；
S3. it is input into sinusoidal ac signal from signal generating unit to LC resonant tanks；
S4. the frequency for being exported by detecting signal unit detection LC resonant tanks, and first secondary frequencies are recorded as reference frequency,
And the practical frequency after first secondary frequencies is compared with first secondary frequencies, secondary frequencies are more than with the difference of practical frequency and set as before
Determine scope, then judge high pressure shaft tower run-off the straight.
Beneficial effects of the present invention：By system and method for the invention, the heeling condition of high pressure shaft tower can be carried out
Accurate measurements, exclude environmental disturbances, and accurately reply treatment measures are made beneficial to dispatching of power netwoks, and effectively reduce manpower, thing
Power cost, improves monitoring efficiency, and with extremely strong real-time.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is differential capacitance arrangement schematic diagram of the invention.
Fig. 2 is schematic diagram of the invention.
Specific embodiment
Fig. 1 is differential capacitance arrangement schematic diagram of the invention, and Fig. 2 is schematic diagram of the invention, as illustrated, this hair
A kind of high pressure shaft tower based on differential capacitance of bright offer inclines monitoring system, including：
Signal generating unit, for producing sinusoidal ac signal and exporting；
Resonant element, resonance, and export resonance signal are entered for receiving the AC signal produced by signal generating unit；
Detection unit, the resonance signal for receiving resonant element output, and judge high according to the change of resonance signal frequency
Whether depression bar tower inclines；
The resonant element includes coil L1, electric capacity C1 and two plate capacitors, two the first pole plates 2 of plate capacitor
It is fixedly installed on both sides of high pressure shaft tower 1 and parallel just right；Second pole plate 3 of two plate capacitors is right against each self-capacitance respectively
The first pole plate 2 set；One end of coil L1 is connected with the output end of signal generating unit, and the other end is grounded by electric capacity C1,
Points of common connection between coil L1 and electric capacity C1 is connected with the second pole plate of one of plate capacitor, another plate capacitor
Second pole plate is grounded, the points of common connection of coil L1 and electric capacity C1 as resonant element output end, the arrangement knot of differential capacitance
Structure as shown in figure 1, wherein, the second pole plate of plate capacitor is fixed by existing mode, so that it is guaranteed that the distance of pole plate part
It is fixed, and this arrangement can effectively suppress the influence that environmental factor is brought to monitoring result；By above-mentioned knot
Structure, can carry out accurate measurements to the heeling condition of high pressure shaft tower, exclude environmental disturbances, made beneficial to dispatching of power netwoks and accurately should
To treatment measures, and human and material resources cost is effectively reduced, improve monitoring efficiency, and with extremely strong real-time；Wherein,
In Fig. 2, differential capacitance is equivalent to electric capacity C2.
Wherein, the present invention completes monitoring by the following method：
S1. differential capacitance is arranged in high pressure shaft tower：Differential capacitance is two plate capacitors composition, the of two plate capacitors
One pole plate is fixedly installed on both sides of high pressure shaft tower and parallel just right；Second pole plate of two plate capacitors is right against each respectively
First pole plate of electric capacity is set；
S2. differential capacitance is connected in LC resonant tanks；
S3. it is input into sinusoidal ac signal from signal generating unit to LC resonant tanks；
S4. the frequency for being exported by detecting signal unit detection LC resonant tanks, and first secondary frequencies are recorded as reference frequency,
And the practical frequency after first secondary frequencies is compared with first secondary frequencies, secondary frequencies are more than with the difference of practical frequency and set as before
Determine scope, then judge high pressure shaft tower run-off the straight；That is, after the completion of whole system arrangement, the resonance of resonant tank is frequently
Rate is also just fixed, therefore, the frequency that monitoring unit will be monitored first is not sent out as reference frequency, now high pressure shaft tower
Changing, when high pressure shaft tower run-off the straight, high pressure shaft tower will drive the first pole plate and the second pole plate that relative motion occurs, according to plate
The formula of formula electric capacityThe motion of capacitor plate will cause facing area and distance between polar plate between pole plate to become
Change, so as to cause capacitance variations, capacitance variations to have influence on resonant frequency, therefore, by the difference of practical frequency and first secondary frequencies
Value with setting threshold range be compared, then can determine whether shaft tower whether run-off the straight.
In the present embodiment, the signal generating unit includes：
Signal generating circuit, for producing sinusoidal ac signal and exporting；Wherein, signal generating circuit using it is existing just
String signal generator, such as ML2035, ML2036 etc.；
Power amplification circuit, puts for being amplified to process and export to the sinusoidal ac signal that signal generating circuit is exported
Big signal；
Coupler, for by the amplification signal loading of power amplification circuit output end in resonant element；The coupler is
No-load voltage ratio is 1:1 transformer, this structure can be prevented effectively from signal be there is distortion and monitoring result is impacted；By upper
Structure is stated, accurate measurements to the heeling condition of high pressure shaft tower are ensure that.
In the present embodiment, the signal generating unit also includes filter circuit I, the input and work(of the filter circuit I
The output end of rate amplifying circuit, the output end of filter circuit I is connected with the input of coupler, by this structure, can filter
Except the noise signal in the signal of power amplification circuit output, so that beneficial to the accuracy for improving final judged result.
In the present embodiment, the detection unit includes：
Rectification circuit, its input is connected with the output end of resonant element, for the resonance signal exported to resonance circuit
Carry out rectification and export direct current signal；Rectification circuit uses existing bridge rectifier；
Filter circuit II, its input is connected with the output end of rectification circuit, enters for the direct current signal to rectification circuit
Row filtering；
Frequency detection circuit, its input is connected with the output end of filter circuit, for the signal exported to filter circuit
Frequency detecting is carried out, wherein, frequency detection circuit is using CY8C29666 chips, LM2917 chips etc.；
Whether central processing circuit, frequency signal and determination frequency for receives frequency detection circuit output change, such as
Change, then export warning message, central processing circuit uses existing embedded processing circuit, such as STM32 series is single
Piece machine；Certainly, detection unit can also set GPRS module, GPS location circuit, after high pressure shaft tower run-off the straight, centre
Reason circuit obtains current location information from GPS location circuit, and current location information and warning message are sent collectively into prison
The server at control center, corresponding alert information is found so as to Surveillance center in time, and inspection measure is tieed up beneficial to making in time.
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 shaft tower based on differential capacitance inclines monitoring system, it is characterised in that：Including：
Signal generating unit, for producing sinusoidal ac signal and exporting；
Resonant element, resonance, and export resonance signal are entered for receiving the AC signal produced by signal generating unit；
Detection unit, the resonance signal for receiving resonant element output, and high pressure stem is judged according to the change of resonance signal frequency
Whether tower inclines；
The resonant element includes coil L1, electric capacity C1 and two plate capacitors, and the first pole plate of two plate capacitors is fixed
It is arranged at both sides of high pressure shaft tower and parallel just right；Second pole plate of two plate capacitors is right against the first of each self-capacitance respectively
Pole plate is set；One end of coil L1 is connected with the output end of signal generating unit, and the other end is grounded by electric capacity C1, coil L1 with
Points of common connection between electric capacity C1 is connected with the second pole plate of one of plate capacitor, the second pole plate of another plate capacitor
Ground connection, the points of common connection of coil L1 and electric capacity C1 as resonant element output end.
2. the high pressure shaft tower based on differential capacitance inclines monitoring system according to claim 1, it is characterised in that：The signal
Generating unit includes：
Signal generating circuit, for producing sinusoidal ac signal and exporting；
Power amplification circuit, amplification letter is processed and exports for being amplified to the sinusoidal ac signal that signal generating circuit is exported
Number；
Coupler, for by the amplification signal loading of power amplification circuit output end in resonant element.
3. the voltage shaft tower based on differential capacitance inclines monitoring system according to claim 2, it is characterised in that：The coupling
Device is that no-load voltage ratio is 1:1 transformer.
4. the voltage shaft tower based on differential capacitance inclines monitoring system according to claim 2, it is characterised in that：The signal
Generating unit also includes filter circuit I, the input of the filter circuit I and the output end of power amplification circuit, filter circuit I
Output end be connected with the input of coupler.
5. the voltage shaft tower based on differential capacitance inclines monitoring system according to claim 1, it is characterised in that：The detection
Unit includes：
Rectification circuit, its input is connected with the output end of resonant element, and the resonance signal for being exported to resonance circuit is carried out
Rectification simultaneously exports direct current signal；
Filter circuit II, its input is connected with the output end of rectification circuit, is filtered for the direct current signal to rectification circuit
Ripple；
Frequency detection circuit, its input is connected with the output end of filter circuit, and the signal for being exported to filter circuit is carried out
Frequency detecting；
Whether central processing circuit, frequency signal and determination frequency for receives frequency detection circuit output change, and such as occur
Change, then export warning message.
6. a kind of high pressure shaft tower based on differential capacitance inclines monitoring method, it is characterised in that：Comprise the following steps：
S1. differential capacitance is arranged in high pressure shaft tower：Differential capacitance is two plate capacitor compositions, two the first poles of plate capacitor
Plate is fixedly installed on both sides of high pressure shaft tower and parallel just right；Second pole plate of two plate capacitors is right against each self-capacitance respectively
The first pole plate set；
S2. differential capacitance is connected in LC resonant tanks；
S3. it is input into sinusoidal ac signal from signal generating unit to LC resonant tanks；
S4. the frequency for being exported by detecting signal unit detection LC resonant tanks, and first secondary frequencies are recorded as reference frequency, and will
Practical frequency after first secondary frequencies is compared with first secondary frequencies, and secondary frequencies are more than setting model with the difference of practical frequency as before
Enclose, then judge high pressure shaft tower run-off the straight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611148147.0A CN106705937B (en) | 2016-12-13 | 2016-12-13 | Voltage shaft tower inclination monitoring system and method based on differential capacitance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611148147.0A CN106705937B (en) | 2016-12-13 | 2016-12-13 | Voltage shaft tower inclination monitoring system and method based on differential capacitance |
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| Publication Number | Publication Date |
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| CN106705937A true CN106705937A (en) | 2017-05-24 |
| CN106705937B CN106705937B (en) | 2019-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611148147.0A Active CN106705937B (en) | 2016-12-13 | 2016-12-13 | Voltage shaft tower inclination monitoring system and method based on differential capacitance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282794A (en) * | 2018-11-05 | 2019-01-29 | 山东省科学院激光研究所 | Device is inclined in optical fiber survey and difference survey is inclined system |
| CN110146006A (en) * | 2019-05-23 | 2019-08-20 | 西安工程大学 | The monitoring device and monitoring method of electric power pylon deformation based on plane-parallel capacitor |
| CN114609412A (en) * | 2022-03-11 | 2022-06-10 | 西安交通大学 | Electric iron gesture recognition intelligent sensor based on MEMS capacitive acceleration sensor |
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| US20030133372A1 (en) * | 2002-01-11 | 2003-07-17 | Fasen Donald J. | Capacitance-based position sensor |
| CN101285859A (en) * | 2008-05-22 | 2008-10-15 | 北京航空航天大学 | Detection circuit for measuring tiny differential capacitance |
| CN201716103U (en) * | 2010-06-13 | 2011-01-19 | 重庆市电力建设总公司 | Vibration detection device for micro-variation capacitance pole tower |
| CN103344219A (en) * | 2013-06-17 | 2013-10-09 | 华中科技大学 | Two-dimensional static relative inclinometer |
| CN103968936A (en) * | 2014-05-23 | 2014-08-06 | 国家电网公司 | Tower vibration monitoring device based on differential micro-variation capacitance |
-
2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030133372A1 (en) * | 2002-01-11 | 2003-07-17 | Fasen Donald J. | Capacitance-based position sensor |
| CN101285859A (en) * | 2008-05-22 | 2008-10-15 | 北京航空航天大学 | Detection circuit for measuring tiny differential capacitance |
| CN201716103U (en) * | 2010-06-13 | 2011-01-19 | 重庆市电力建设总公司 | Vibration detection device for micro-variation capacitance pole tower |
| CN103344219A (en) * | 2013-06-17 | 2013-10-09 | 华中科技大学 | Two-dimensional static relative inclinometer |
| CN103968936A (en) * | 2014-05-23 | 2014-08-06 | 国家电网公司 | Tower vibration monitoring device based on differential micro-variation capacitance |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282794A (en) * | 2018-11-05 | 2019-01-29 | 山东省科学院激光研究所 | Device is inclined in optical fiber survey and difference survey is inclined system |
| CN110146006A (en) * | 2019-05-23 | 2019-08-20 | 西安工程大学 | The monitoring device and monitoring method of electric power pylon deformation based on plane-parallel capacitor |
| CN110146006B (en) * | 2019-05-23 | 2020-10-27 | 西安工程大学 | Device and method for monitoring deformation of power transmission tower based on parallel plate capacitor |
| CN114609412A (en) * | 2022-03-11 | 2022-06-10 | 西安交通大学 | Electric iron gesture recognition intelligent sensor based on MEMS capacitive acceleration sensor |
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| CN106705937B (en) | 2019-11-15 |
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