CN106525219A - Tower material vibration displacement real time monitoring method for power transmission iron tower - Google Patents
Tower material vibration displacement real time monitoring method for power transmission iron tower Download PDFInfo
- Publication number
- CN106525219A CN106525219A CN201610911199.2A CN201610911199A CN106525219A CN 106525219 A CN106525219 A CN 106525219A CN 201610911199 A CN201610911199 A CN 201610911199A CN 106525219 A CN106525219 A CN 106525219A
- Authority
- CN
- China
- Prior art keywords
- tower
- acceleration
- signal
- displacement
- tower material
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
Abstract
The invention discloses a tower material vibration displacement real time monitoring method for a power transmission iron tower. The tower material vibration displacement real time monitoring method includes the steps: 1) acquiring an acceleration signal of the tower material of an iron tower; 2) utilizing Fourier transform to convert an acceleration time domain signal into a frequency domain signal, and divided an acceleration frequency spectrum by omega 2, wherein omega is an angular frequency; 3) selecting a Qualcomm high channel to perform filtering truncation on the obtained frequency domain signal in the step 2 and then convert the frequency domain signal into displacement frequency spectrum; and 4) performing Fourier inversion on the displacement frequency spectrum to convert the displacement frequency spectrum into a displacement time domain signal so as to obtain the real time displacement of the tower material of the iron tower. The tower material vibration displacement real time monitoring method for a power transmission iron tower can monitor the vibration displacement of the tower material of the tower in real time, thus being convenient for monitoring the magnitude of the displacement of the tower in real time for a power worker when a transmission conductor is galloping so as to determine the safety state of the tower, wherein once the tower has the trend of danger, remedial action can be taken timely.
Description
Technical field
The present invention relates to electric power pylon monitoring field, more particularly, to a kind of electric power pylon tower material vibration displacement real-time monitoring
Method.
Background technology
The ultra-high-tension power transmission line brandishing of Northern Part of China is the subject matter for threatening electric power netting safe running, especially
500kV and its above backbone network circuit, once there is windage yaw electric discharge, cause tripping operation, will cause large-area power-cuts, not only produce straight
The economic loss for connecing, can also seriously threaten the security and the reliability of electrical network.
In recent years, with the development of power grid construction, and the impact of disastrous meteorological condition, China's galloping of overhead transmission line
The frequency and intensity that accident occurs all substantially increase.Waving in addition to it may cause electrical hazard for ice coating wire, goes back when serious
The impaired even major accident such as tower of broken string, steel tower can be caused.Wave and typically cause tower material bolt looseness first, and then cross-arm is disconnected
Split, then go offline accident.Before waving and producing ill effect, Real Time Monitoring tower material waves vibration characteristics, for
Simultaneously the harm of early warning line oscillation is most important for research.
Publication number CN 104501769 provides a kind of electric power line pole tower condition detection method and its device, by surveying
Away from measurement device data, the step of calculate latitude, longitude, height above sea level, and the step of calculate side-play amount.Publication number CN
102494650 provide a kind of pole tower displacement monitoring system, the next including shaft tower displacement monitoring terminal and the ground being connected electrically
Move monitoring terminal；Shaft tower displacement monitoring terminal is arranged on shaft tower, including main control module, and is electrically connected with main control module
Ground shaft tower displacement transducer, power module and communication module；Underground displacement monitoring terminal is arranged on subterrane, including
Control module and the displacement transducer being connected electrically, monitor the displacement of shaft tower and basement rock respectively by using displacement transducer
Amount, by shaft tower displacement and bed rock displacement amount, can calculate displacement of the shaft tower relative to basement rock.
The Chinese patent of publication number CN201233275 discloses a kind of accurate measurement high-tension line throw amplitude value and frequency
Detection means, including the power supply sensor circuit and data processing circuit that arrange in seal casinghousing and housing；Data processing circuit bag
Include low-power scm, vibration amplitude detection circuit, vibration frequency detection circuit, signal amplification circuit, sampling hold circuit, A/
D change-over circuits and signal long-distance radiating circuit.The Chinese patent of publication number CN201134152 provides a kind of overhead transmission line
Monitoring device and system are waved in road, including：Acceleration transducer, signal condition unit, wireless transmit/receive units and power supply；Accelerate
Degree sensor is coupled with signal condition unit, and signal condition unit is coupled with wireless transmit/receive units；Acceleration transducer pair
The acceleration signal of waving for waving monitoring point on overhead transmission line conductor is monitored, and the acceleration signal of monitoring is passed
Give signal condition unit；Signal condition unit carries out signal condition to acceleration signal, and the acceleration standard for generating is believed
Number send wireless transmit/receive units to；The acceleration standard signal of reception is carried out wireless transmission by wireless transmit/receive units；Power supply is used for
Work energy is provided.
And the shaft tower tower material vibration that conductor galloping is caused belongs to the low frequency of 0.1-3Hz, surpasses different from general oscillatory type
Low-frequency vibration, therefore measuring method is different from general shaft tower displacement measurement.Collecting existing transmission line galloping e measurement technology more
In in the measurement of conductor galloping track；Conductor galloping is characterized in that low frequency, large amplitude, and tower material vibration displacement feature is low frequency, position
Shifting amount is little, therefore measuring method is different from the measurement of conductor galloping track, and not yet has at present and wave for electric power pylon tower material
The device of displacement monitoring.
The content of the invention
In view of this, the purpose of the present invention is for the deficiencies in the prior art, there is provided a kind of electric power pylon tower material vibrates position
Method of real-time is moved, to the vibration displacement of real-time monitoring tower material.
For reaching above-mentioned purpose, the present invention is employed the following technical solutions：
A kind of electric power pylon tower material vibration displacement method of real-time, comprises the steps：
Step 1, obtains the acceleration signal of tower material of iron tower；
Acceleration time domain signal using Fourier transformation, is converted to frequency-region signal, to acceleration frequency spectrum divided by ω by step 22,
ω is angular frequency；
Step 3, the frequency-region signal that selection high pass channel is obtained to step 2 are converted to shift spectrum after carrying out blocking filtering；
Step 4, it is displacement time-domain signal that the shift spectrum is carried out Fourier inversion, obtains the real-time position of tower material of iron tower
Move.
Preferably, the step 1, obtains the acceleration signal of tower material of iron tower, including：
Acceleration transducer gathers the acceleration signal of tower material of iron tower；
The acceleration signal for collecting is sent to into NIcRIO signals collecting platforms Jing after signal condition isolation；
Measurement and control unit is transmitted signals to by the NIcRIO signals collectings platform Jing communication units, it is offline to read acceleration letter
Number.
Preferably, the acceleration transducer adopts capacitance acceleration transducer.
Preferably, the acceleration transducer includes 3-axis acceleration sensor and single-axis acceleration sensors.
Preferably, the acceleration signal for collecting is transmitted Jing after signal condition isolation under 1-5V standard voltage signals
To NIcRIO signals collecting platforms.
The invention has the beneficial effects as follows：
The present invention arranges multiple acceleration transducers on tower material of iron tower, is capable of the vibration displacement of real-time monitoring shaft tower tower material；Will
The acceleration time domain signal of the shaft tower vibration that conductor galloping causes is converted to displacement time-domain signal, and the method degree of accuracy is high, accurate
Property it is good, for eliminate trend term and low-frequency disturbance effect it is obvious.Under Galloping of Overhead Transmission Line state, it is easy to work about electric power personnel's reality
When monitor shaft tower amount of displacement, come according to this to judge the safe condition of shaft tower, once shaft tower has the trend caused danger,
Can adopt remedial measures in time.
The acceleration transducer of the present invention adopts capacitance acceleration transducer as tower material vibration displacement measuring sensor,
The output for avoiding piezoelectric transducer is increasing with the dropout error of frequency, is difficult to apply in tower material Vibration-Measuring System
Problem.
Because electric power pylon tower material volume is larger, during using single sensor measurement data, a tower material part can only be measured
Displacement, it is difficult to realize the monitoring of whole tower material.The present invention adopts multiple acceleration transducers, in the portion that tower material easily breaks down
Divide and be respectively mounted acceleration transducer, the misalignment of multiple monitoring points, the dance of the whole tower material of Real Time Monitoring can be measured simultaneously
Dynamic vibration characteristics.
Other features and advantages of the present invention will be illustrated in the following description, also, partly be become from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
In book, claims and accompanying drawing, specifically noted structure is realizing and obtain.
Description of the drawings
Fig. 1 is a kind of method flow diagram of electric power pylon tower material vibration displacement method of real-time of the invention.
Fig. 2 is a kind of flow chart of electric power pylon tower material vibration displacement method of real-time step S101 of the invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in figure 1, the present invention provides a kind of electric power pylon tower material vibration displacement method of real-time, comprise the steps
S101-S104：
Step 101, obtains the acceleration signal of tower material of iron tower；
Acceleration time domain signal, using Fourier transformation, is converted to frequency-region signal by step 102, to acceleration frequency spectrum divided by
ω2, ω is angular frequency；
Step 103, the frequency-region signal that selection high pass channel is obtained to step 2 are converted to shift spectrum after carrying out blocking filtering；
Step 104, it is displacement time-domain signal that the shift spectrum is carried out Fourier inversion, obtains the real-time position of tower material of iron tower
Move.
Displacement measurement typically has indirectly and directly two ways, and direct measurement generally requires reference bit as fixing point, right
It is difficult to adopt which in tower material vibration displacement, indirect mode can only be adopted.Thing to measuring is accomplished by using indirect mode
Reason amount is changed, and the selection of the displacement transfer algorithm is larger for the impact of final precision.The present invention is vibrated in real time for tower material
The acceleration information that monitoring system is collected is converted to the computational methods of tower material vibration displacement.
In the embodiment, for by the way of relative measurement vibration displacement, need to carry out displacement calculating.Measuring
After acceleration, need to carry out A-V-D conversion, that is, acceleration-speed-shift transformation, the process is exactly to accumulate in simple terms
Divide process：Integrated acceleration is changed into speed, and rate integrating is changed into displacement.The method utilizes Fourier transformation, by acceleration time domain
Signal is converted to frequency-region signal, to acceleration frequency spectrum divided by ω2, ω is angular frequency；Then suitable high-pass equipment is selected to carry out cutting
After disconnected filtering, shift spectrum is converted to, Fourier inversion is then carried out for displacement time-domain signal.For measured shaft tower object
Periodically stronger the characteristics of, suitable frequency filtering is selected according to its frequency spectrum, the shaft tower vibration acceleration signal for collecting is turned
The displacement signal of shaft tower vibration is changed to, real-time monitoring is carried out to tower material vibration displacement.
The vibration frequency of different objects is different, and the cut-off frequency of selection is also differed, and cut-off frequency bandwidth is adjustable.With certain
As a example by one base shaft tower, the conductor galloping frequency of the shaft tower two ends span is 0.4 Hz, then the vibration frequency of the shaft tower for causing
0.4 Hz, by test repeatedly can the bandpass filtering low-frequency cut-off frequency of vibration of the shaft tower be 0.3 Hz, high-frequency cut-off
Frequency is 5Hz.
In one embodiment, the acceleration transducer adopts capacitance acceleration transducer.
In the embodiment, acceleration transducer is sensed as the measurement of tower material vibration displacement using capacitance acceleration transducer
Device, it is to avoid the output of piezoelectric transducer is increasing with the dropout error of frequency, is difficult in tower material Vibration-Measuring System
Using problem.
In one embodiment, the acceleration transducer includes 3-axis acceleration sensor and individual axis acceleration sensing
Device.
In the embodiment, because electric power pylon tower material volume is larger, during using single sensor measurement data, tower can only be measured
The a part of displacement of material, it is difficult to realize the monitoring of whole tower material.The present invention adopts multiple acceleration transducers, easily goes out in tower material
The part of existing failure is respectively mounted acceleration transducer, can measure the misalignment of multiple monitoring points simultaneously, and Real Time Monitoring is whole
Individual tower material waves vibration characteristics.
In one embodiment, as shown in Fig. 2 step S101 may be embodied as following steps：
Step S201, acceleration transducer gather the acceleration signal of tower material of iron tower；
The acceleration signal for collecting is sent to NIcRIO signals collecting platforms Jing after signal condition isolation by step S202；
Step S203, transmits signals to measurement and control unit by the NIcRIO signals collectings platform Jing communication units, offline to read
Acceleration signal.
In the embodiment, using the NIcRIO signals collecting platforms of NI companies of the U.S.（Abbreviation cRIO platforms）, cRIO platforms
It is not required to it is to be understood that sensor foremost is pulling force signal on earth, or acceleration signal, it is only necessary to 1 finally sent for which
~ 5V voltage signals are acquired, due to being operated in outdoor, it is necessary to possess and determine antijamming capability, and NIcRIO signals collectings are put down
Platform typically also carries the GPS cards of time service.
NIcRIO signals collectings platform is used for the storage and transmission of control signal, the injection of GPS time stamps etc., and for controlling
Capture card gathers signal.
NIcRIO signals collectings platform is arranged comprising user and two parts of real-time sampling, and user's setting unit is used for initial
Change sample frequency, the proportionality coefficient of setting final output signal, IP of ftp server of setting upload data etc., real-time sampling
After user's setting terminates, can open carries out data acquisition for part.Sample rate can adjust, can be from 0.1Hz ~ 1000Hz, again
Need to restart reboot cRIO after setting and can just come into force.GPS cards are obtained into all numbers that the injection of real-time criteria time is collected
According in, and preserve together, transmit with the data for sampling.Real-time voltage of the data display interface comprising all passages for collecting
Data, and corresponding real-time experiment curv, while will also there is the final data and its curve for arranging signal proportion coefficient.Adopted
The data of collection can be saved in NIcRIO signals collecting platforms, also will in real time, synchronized upload to user set the FTP of IP
On server.Data preserving according to the circulation storage principle for covering oldest data in NIcRIO signals collecting platforms；Data
Real-time mode is adopted to the upload of ftp server.Host computer possesses Data Format Transform function, can be by NIcRIO signals collectings
Platform is transferred to the data of the TMDS forms on ftp server, is converted to excel files, is easy to analyze and processes.
It should be noted that above example is only to illustrate technical scheme and unrestricted, this area is common
Other modifications or equivalent that technical staff is made to technical scheme, without departing from technical solution of the present invention
Spirit and scope, all should cover in the middle of scope of the presently claimed invention.
Claims (5)
1. a kind of electric power pylon tower material vibration displacement method of real-time, it is characterised in that：Comprise the steps：
Step 1, obtains the acceleration signal of tower material of iron tower；
Acceleration time domain signal using Fourier transformation, is converted to frequency-region signal, to acceleration frequency spectrum divided by ω by step 22, ω
For angular frequency；
Step 3, the frequency-region signal that selection high pass channel is obtained to step 2 are converted to shift spectrum after carrying out blocking filtering；
Step 4, it is displacement time-domain signal that the shift spectrum is carried out Fourier inversion, obtains the real-time position of tower material of iron tower
Move.
2. a kind of electric power pylon tower material vibration displacement method of real-time according to claim 1, it is characterised in that：It is described
Step 1, obtains the acceleration signal of tower material of iron tower, including：
Acceleration transducer gathers the acceleration signal of tower material of iron tower；
The acceleration signal for collecting is sent to into NIcRIO signals collecting platforms Jing after signal condition isolation；
Measurement and control unit is transmitted signals to by the NIcRIO signals collectings platform Jing communication units, it is offline to read acceleration letter
Number.
3. a kind of electric power pylon tower material vibration displacement method of real-time according to claim 2, it is characterised in that：It is described
Acceleration transducer adopts capacitance acceleration transducer.
4. a kind of electric power pylon tower material vibration displacement method of real-time according to claim 2, it is characterised in that：It is described
Acceleration transducer includes 3-axis acceleration sensor and single-axis acceleration sensors.
5. a kind of electric power pylon tower material vibration displacement method of real-time according to claim 2, it is characterised in that：To adopt
The acceleration signal for collecting Jing after signal condition isolation is sent to NIcRIO signals collectings under 1-5V standard voltage signals and puts down
Platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610911199.2A CN106525219A (en) | 2016-10-19 | 2016-10-19 | Tower material vibration displacement real time monitoring method for power transmission iron tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610911199.2A CN106525219A (en) | 2016-10-19 | 2016-10-19 | Tower material vibration displacement real time monitoring method for power transmission iron tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106525219A true CN106525219A (en) | 2017-03-22 |
Family
ID=58332548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610911199.2A Pending CN106525219A (en) | 2016-10-19 | 2016-10-19 | Tower material vibration displacement real time monitoring method for power transmission iron tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106525219A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706107A (en) * | 2017-03-30 | 2017-05-24 | 中国环境监测总站 | Deep vibration testing signal collector and deep vibration testing device |
| CN113720442A (en) * | 2021-09-01 | 2021-11-30 | 国网吉林省电力有限公司松原供电公司 | Transmission tower vibration monitoring method and device |
| CN114034376A (en) * | 2021-11-05 | 2022-02-11 | 国网山东省电力公司青岛供电公司 | Vibration monitoring terminal for transmission tower |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201555658U (en) * | 2009-12-15 | 2010-08-18 | 中国铁道科学研究院机车车辆研究所 | Railway contact net vibration performance test device |
| CN202614367U (en) * | 2012-04-28 | 2012-12-19 | 长安大学 | Fault diagnosis apparatus for induced draught fan |
| CN103196407A (en) * | 2012-01-09 | 2013-07-10 | 中联重科股份有限公司 | Method, device and system for vibration displacement measurement of cantilever crane of pump truck and engineering machinery device |
| JP2015210110A (en) * | 2014-04-24 | 2015-11-24 | 株式会社小野測器 | FFT analyzer |
-
2016
- 2016-10-19 CN CN201610911199.2A patent/CN106525219A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201555658U (en) * | 2009-12-15 | 2010-08-18 | 中国铁道科学研究院机车车辆研究所 | Railway contact net vibration performance test device |
| CN103196407A (en) * | 2012-01-09 | 2013-07-10 | 中联重科股份有限公司 | Method, device and system for vibration displacement measurement of cantilever crane of pump truck and engineering machinery device |
| CN202614367U (en) * | 2012-04-28 | 2012-12-19 | 长安大学 | Fault diagnosis apparatus for induced draught fan |
| JP2015210110A (en) * | 2014-04-24 | 2015-11-24 | 株式会社小野測器 | FFT analyzer |
Non-Patent Citations (1)
| Title |
|---|
| 顾名坤等: "基于振动加速度测量的振动速度和位移信号识别方法探讨", 《机械科学与技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706107A (en) * | 2017-03-30 | 2017-05-24 | 中国环境监测总站 | Deep vibration testing signal collector and deep vibration testing device |
| CN113720442A (en) * | 2021-09-01 | 2021-11-30 | 国网吉林省电力有限公司松原供电公司 | Transmission tower vibration monitoring method and device |
| CN114034376A (en) * | 2021-11-05 | 2022-02-11 | 国网山东省电力公司青岛供电公司 | Vibration monitoring terminal for transmission tower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106500825A (en) | A kind of electric power pylon vibration displacement real-time monitoring system | |
| CN101975909B (en) | Method for judging failure properties of shielding failure and counterattack of transmission line | |
| CN102506986B (en) | Test system and method for mode and vibration of self-supporting tower and large-span power transmission tower | |
| CN106846736A (en) | A kind of sensing system of landslide Geological Hazards Monitoring | |
| Girard et al. | A custom acoustic emission monitoring system for harsh environments: application to freezing-induced damage in alpine rock walls | |
| CN106525219A (en) | Tower material vibration displacement real time monitoring method for power transmission iron tower | |
| CN105785430A (en) | Real-time monitoring system and method for mine earthquake | |
| CN102141434A (en) | Online monitoring system for power transmission line oscillation | |
| CN104634870A (en) | Tunnel structure damage identification device based on vibration response test | |
| CN215639386U (en) | Transmission line wire state integrated monitoring system | |
| CN107205285A (en) | Structural healthy monitoring system, collection device and structure health monitoring method | |
| CN104390710A (en) | Power transmission line conductive wire temperature online detection system and method | |
| CN105553101A (en) | Intelligent detection method of power transmission line | |
| CN103760591A (en) | Seismic detection system of detecting underground water level | |
| CN205138471U (en) | Railway roadbed subsides real -time monitoring system based on big dipper dual -frenquency is measured | |
| CN203011379U (en) | Inclination angle on-line monitoring system of transmission tower | |
| CN204705726U (en) | Ocean platform Integrated Observation System | |
| CN206113898U (en) | Displacement real -time monitoring system is waved to steel pylons tower material | |
| CN203700917U (en) | Information acquisition device of vibratory roller | |
| CN106706086A (en) | Ultra-high voltage transmission line on-line monitoring system | |
| CN209673237U (en) | Point location detection instrument occurs for gangue spontaneous combustion | |
| CN102831665B (en) | Power transmission tower intensity and vibration off-line intelligent routing inspection system and early warning method thereof | |
| CN103868565A (en) | Wireless water level sensor | |
| CN202748234U (en) | Power transmission iron tower intensity and vibration off-line intelligent inspection tour system | |
| CN206684904U (en) | A kind of Mine production monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |
|
| RJ01 | Rejection of invention patent application after publication |