CN106705937A - Differential-capacitor-based voltage tower inclination monitoring system and method - Google Patents

Differential-capacitor-based voltage tower inclination monitoring system and method Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
signal
plate
circuit
shaft tower
resonance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201611148147.0A
Other languages
Chinese (zh)
Other versions
CN106705937B (en
Inventor
张明
何勇
郑凯
李自勇
胡应华
陈航
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Maintenance Branch of State Grid Chongqing Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Maintenance Branch of State Grid Chongqing Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Maintenance Branch of State Grid Chongqing Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201611148147.0A priority Critical patent/CN106705937B/en
Publication of CN106705937A publication Critical patent/CN106705937A/en
Application granted granted Critical
Publication of CN106705937B publication Critical patent/CN106705937B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00Measuring inclination, e.g. by clinometers, by levels
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00Measuring inclination, e.g. by clinometers, by levels
    • G01C9/02Details
    • G01C9/06Electric or photoelectric indication or reading means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00Measuring inclination, e.g. by clinometers, by levels
    • G01C9/02Details
    • G01C9/06Electric or photoelectric indication or reading means
    • G01C2009/062Electric 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

Voltage shaft tower based on differential capacitance inclines monitoring system and its method
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.
CN201611148147.0A 2016-12-13 2016-12-13 Voltage shaft tower inclination monitoring system and method based on differential capacitance Active CN106705937B (en)

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

Applications Claiming Priority (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

Publications (2)

Publication Number Publication Date
CN106705937A true CN106705937A (en) 2017-05-24
CN106705937B CN106705937B (en) 2019-11-15

Family

ID=58937364

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611148147.0A Active CN106705937B (en) 2016-12-13 2016-12-13 Voltage shaft tower inclination monitoring system and method based on differential capacitance

Country Status (1)

Country Link
CN (1) CN106705937B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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

Citations (5)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CN106705937B (en) 2019-11-15

Similar Documents

Publication Publication Date Title
CN100373166C (en) Device for detecting transformer winding state utilizing sweep frequency power source exciting
CN103454517B (en) Capacitance type potential transformer on-line monitoring method
US20140216157A1 (en) Method for Determining Arc Discharge as well as Failure of Mechanical Vibration and Abnormal Displacement in Power Equipment Using Acoustic Energy Feature
CN106705937A (en) Differential-capacitor-based voltage tower inclination monitoring system and method
CN206975158U (en) A kind of detection means of generator rotor interturn short-circuit situation
CN103954815A (en) Electricity larceny prevention check main machine
CN101755221B (en) Method and device for off-line testing of electric motors
CN104154854B (en) Method based on Lee's Sa such as characteristic on-line monitoring winding deformation of power transformer
CN105911499A (en) Ultrasonically local discharging metering system under onsite environment and method
CN109830972B (en) New energy station oscillation source rapid identification system and method
CN105182126A (en) Improved distribution transformer energy efficiency measuring detection method
CN101358875A (en) Method for measuring capacitor noise by multi-frequency power implantation and apparatus thereof
CN107247204A (en) The condition monitoring system and monitoring method of voltage limiter in super, extra-high voltage series compensation device
CN102798758B (en) Method and system for measuring series reactance rate of shunt capacitor bank
CN103675560A (en) Online identifying method for detuning of direct current side filter of high-voltage direct current transmission system
CN2864705Y (en) Device for detecting transformer winding state utilizing sweep frequency power source exciting
CN204085686U (en) Power transformer inside loosens judgement system
CN102590290A (en) Detection device and detection method
CN202041624U (en) Direct-current high-voltage test integrated device for internal water cooling generator
CN105182116B (en) A kind of transformer winding working state detecting method based on weighted gradient structural similarity
CN205562734U (en) Be used for insulating diagnostic electrified detection and on -line monitoring device of ultrahigh -voltage power cable
CN112505430A (en) Passive high-voltage capacitor capacitance online monitoring system and method
CN205176191U (en) Transformer winding deformation test system
CN202583111U (en) Detection device
CN106199200A (en) Accumulator internal resistance on-line monitoring system and method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant