CN106546210A - A kind of disconnecting switch outer corner measurement system and method for on-line monitoring - Google Patents
A kind of disconnecting switch outer corner measurement system and method for on-line monitoring Download PDFInfo
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- CN106546210A CN106546210A CN201611056548.3A CN201611056548A CN106546210A CN 106546210 A CN106546210 A CN 106546210A CN 201611056548 A CN201611056548 A CN 201611056548A CN 106546210 A CN106546210 A CN 106546210A
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- corner
- disconnecting switch
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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- 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
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of disconnecting switch outer corner measurement system and method for on-line monitoring, system includes rotary angle transmitter, DC power supply unit and processor.Measuring method includes that the acquisition of crank degree, the setting of corner acquisition parameter, rotation curve fitting, rotation curve derivation, standard deviation calculating and standard deviation compare, the final running status for determining disconnecting switch.The present invention installs rotary angle transmitter in rotating shaft additional, without the need for dismantling to existing structure, easy for installation, by interconnected with wireless network, completes the on-line monitoring to all disconnecting switch of transformer station；Real-time Collection and crank degree during each disconnecting switch divide-shut brake of transformer station can be shown, detection and isolation switch fault situation is including but not limited to closed a floodgate not in place, disconnecting link bite etc., monitoring is convenient, accuracy of judgement.
Description
Technical field
The present invention relates to high voltage electric equipment technical field, more particularly to a kind of disconnecting switch corner for on-line monitoring
Measuring system and method.
Background technology
In power system, disconnecting switch consumption is usually 2-4 times of chopper consumption, is a kind of maximum high pressure of consumption
Switchgear.High voltage isolator is generally used cooperatively with chopper, is mainly used in grid switching operation, insulating power supply or division little
Load equipment, when the method for operation or equipment interruption maintenance is switched, disconnecting switch can smooth operation directly influence system
Power supply reliability and safety.The structural principle of disconnecting switch is relatively easy, usage amount is big, functional reliability has high demands, but
Power supply administration can not show a candle to transformator and chopper to its attention degree, and its processing technique, installation and debugging and quality control are often given birth to
Product department is ignored.As disconnecting switch works in outdoor environment, rotate or drive mechanism be chronically exposed in severe atmospheric environment,
Endure the erosion of wind and frost sleet to the fullest extent, operation maintenance in addition occurs various accident defects not in time, easily.
These accident defects are concentrated mainly on galvanic circle heating, Insulator detection, operation failure and corrosion this four class, it
Be frequently not independent but inter-related, such as disconnecting switch corrosion bite problem can cause disconnecting switch mechanical strength to drop
It is low or even damage deformation so as to the failure such as cause malfunction, divide-shut brake not in place, can also cause galvanic circle loose contact
Cause overheated, simultaneously because operational torque increase is likely to result in pillar porcelain insulator and damages even rupturing.These typical isolations
In switch fault in addition to the heating of galvanic circle, other belong to mechanical breakdown, and mechanical breakdown accounts for disconnecting switch whole according to statistics
The 70% of failure, seriously threatens power grid security, stable operation.For disconnecting switch overheat of conducting circuit failure, both at home and abroad
Carry out numerous studies work, develop infrared measurement of temperature, contact temperature on-line monitoring system, sensing finger pressure detection technique etc.
The maintained equipment such as detection method and the powered polishing device of contact.
Disconnecting switch mechanical breakdown does not cause production unit, operation department, the enough attention of scientific research institution at present, its
Mechanical failure diagnostic method is not perfect with equipment.Existing diagnostic techniquess such as ultrasonic examination technology, vibroacoustics method, infrared
Heat detection etc. all be directed to defects of insulator, the mechanical breakdown such as not in place for corrosion bite, stroke, it is at present many with the precautionary measures with
Based on experience diagnosis, rarely has diagnostic method directly perceived, effective.No matter existing checkout and diagnosis method is from safety, economy point
On, cannot all meet power system security, stable, expanding economy requirement.
The content of the invention
It is an object of the invention to provide a kind of disconnecting switch outer corner measurement system and method for on-line monitoring, can be real-time
Crank degree during each disconnecting switch divide-shut brake of collection and display transformer station, detection and isolation switch fault situation, accuracy of judgement.
A kind of embodiments in accordance with the present invention, there is provided disconnecting switch outer corner measurement system for on-line monitoring,
The system includes disconnecting switch, and the disconnecting switch includes what powder operation device was connected with the powder operation device
Rotating shaft and the insulator being connected with the rotating shaft, the rotating shaft upper end are provided with rotary angle transmitter, and the system also includes：
Rotary angle transmitter, for detecting crank degree during divide-shut brake；
DC power supply unit, for powering to the rotary angle transmitter；
Processor, for obtaining the crank degree of the rotary angle transmitter detection, according to the crank degree, obtains
Rotation curve；According to the rotation curve, the running status of the disconnecting switch is determined.
Preferably, the processor includes：
Rotation curve fitting unit, for carrying out Function Fitting to the rotation curve, obtains fitting function；
Corner derivative unit, for calculating first derivative to fitting function, obtains corner first derivative function, according to described
Corner first derivative function, obtains corner first derivative function curve；
Standard deviation computing unit, for according to the corner first derivative function curve, being calculated corner first derivative
The standard deviation of curve；
Comparing unit, for by the mark of the standard deviation of the corner first derivative curve and default corner first derivative curve
Quasi- difference compares, and determines the running status of disconnecting switch.
Preferably, the processor also includes corner acquisition parameter setting unit, obtains the crank degree for arranging
Frequency and time.
Preferably, the system also includes display, for showing the running status of the disconnecting switch.
Preferably, the comparing unit, if being additionally operable to the standard deviation of the corner first derivative curve more than default corner
The standard deviation of first derivative curve, and corner first derivative is less than zero, then there are disconnecting link jam faults in the disconnecting switch.
Preferably, the system also includes wireless transport module, for sending the running status of the disconnecting switch.
A kind of disconnecting switch Rotating Angle Measurement for on-line monitoring, methods described include：
Crank degree during detection disconnecting switch divide-shut brake；
The frequency and time for obtaining the crank degree is set；
According to the crank degree, rotation curve is obtained；
Function Fitting is carried out to the rotation curve, fitting function is obtained；
First derivative is calculated to the fitting function, corner first derivative function is obtained, according to the corner first derivative
Function, obtains corner first derivative function curve；
It is calculated the standard deviation of the corner first derivative curve；
Determine the running status of the disconnecting switch.
From above technical scheme, a kind of disconnecting switch outer corner measurement system for on-line monitoring that the present invention is provided
And method, install rotary angle transmitter in rotating shaft additional, it is without the need for dismantling to existing structure, easy for installation, it is mutual by wireless network
Connection, completes the on-line monitoring to all disconnecting switch of transformer station；Being capable of each disconnecting switch division of Real-time Collection and display transformer station
Crank degree during lock, detection and isolation switch fault situation include but is not limited to not in place, the disconnecting link bite etc. that closes a floodgate, monitoring side
Just, accuracy of judgement.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing that needs are used is briefly described, it should be apparent that, drawings in the following description are only some enforcements of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can be being obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation of disconnecting switch provided in an embodiment of the present invention；
Fig. 2 is that a kind of structure of disconnecting switch outer corner measurement system for on-line monitoring provided in an embodiment of the present invention is shown
It is intended to；
Fig. 3 is rotary angle transmitter provided in an embodiment of the present invention and DC power supply unit and the wiring schematic diagram of processor；
Fig. 4 is the rotation curve of three kinds of ruuning situations of disconnecting switch provided in an embodiment of the present invention；
Fig. 5 is the corner first derivative curve of three kinds of ruuning situations of disconnecting switch provided in an embodiment of the present invention.
Fig. 6 is a kind of method flow of disconnecting switch outer corner measurement for on-line monitoring provided in an embodiment of the present invention
Figure；
In figure：1- rotary angle transmitters, 2- rotating shafts, 3- powder operation devices, 4- insulators, 5- DC power supply units, 6- processors,
7- wireless base stations, 8- is wireless main website, 9- display.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Disconnecting switch is generally referred to as the disconnecting switch of high voltage isolator, i.e. rated voltage in more than 1kV, is that height is pressed off
Most a kind of electrical equipment used in powered-down device, the principles and structure of itself are fairly simple, but due to usage amount greatly, work
Make reliability requirement height, the impact to electric substation, the design of power plant, foundation and safe operation is larger.Disconnecting switch it is main
Feature is, without arc extinguishing ability, can only to divide, close circuit in the case of no load current.Disconnecting switch is used for each step voltage, uses
Make to change circuit connection or make circuit or equipment and isolated from power, it does not have cutout abilities, can only be first with miscellaneous equipment by circuit
Operated after disconnection again.The general interlock with maloperation when preventing from switching on-load, it is sometimes desirable to which pin is preventing big
Failure magneticaction under disconnect switch.
As depicted in figs. 1 and 2, a kind of first aspect disconnecting switch for on-line monitoring provided in an embodiment of the present invention turns
Angle measuring system, the system include that disconnecting switch (is handed over using model GW6H-252 type single-pole vertical Telescopic outdoor high pressure
Stream disconnecting switch), the disconnecting switch includes powder operation device 3 (model CJ2 type electric operating device), and the powder operation device
3 rotating shafts 2 being connected and the insulator 4 being connected with the rotating shaft 2,2 upper end of the rotating shaft are provided with rotary angle transmitter 1, described turn
Angle transducer 1 is the sensor for measuring or monitoring object rotational angle, and such as wind turbine shaft rotational angle, welded pipe are rotated
Angle monitoring and the measurement of offshore platform positioning corner etc..
The rotary angle transmitter 1 adopts TDR-BZ-V-180 ° of-Φ 38-II magnetic sensitive angle sensor, by DC power supply unit
5 power supplies (adopt DC24V Switching Power Supplies), and the rotary angle transmitter 1 is coaxially connected using flexible clutch viscosity with the rotating shaft 2
Connect, for detecting crank degree during divide-shut brake；
Processor 6, for obtaining the crank degree of the detection of the rotary angle transmitter 1, according to the crank degree, obtains
To rotation curve；According to the rotation curve, the running status of the disconnecting switch is determined, wherein obtaining the crank degree
Element is the NI-USB6210 data collecting cards of NI companies of U.S. production.
Concrete connected mode such as Fig. 3 institutes of the processor 6, the rotary angle transmitter 1 and the DC power supply unit 5
Show, the red wiring connection DC24V positive sources of the rotary angle transmitter 1, (0 is electric for black wiring connection DC24V power cathodes
Position), yellow wiring is 1 output signal end of corner induction apparatuss, connects 6 input channel of processor, DC24V Switching Power Supplies
Two AC ports access AC220V power supplys.
The processor 6 includes corner acquisition parameter setting unit, and the method for gathering corner can have various, such as this enforcement
Example is gathered using LabVIEW software platforms, can be arranged according to practical situation, for example, arrange sample frequency for 512Hz, and setting is adopted
The sample time is 10s.LabVIEW softwares are a kind of programming development environments, are developed by American National instrument (NI) company, are similar to
In C and BASIC development environments.As C and BASIC, LabVIEW softwares are also general programing system, have one to complete to appoint
The huge function library of what programmed tasks.The function library of LabVIEW softwares includes data acquisition, GPIB, serial ports control, data point
Analysis, data display and data storage, etc..LabVIEW softwares also have traditional program debugging tool, as arranged breakpoint, with dynamic
The result of picture mode video data and its subprogram (sub- VI), single step are performed etc., are easy to the debugging of program.
The processor 6 also includes, rotation curve fitting unit, by the Function Fitting function of MATLAB softwares to described
Rotation curve, as shown in figure 4, carrying out Function Fitting, obtains fitting function；
MATLAB softwares are the business mathematics software that MathWorks companies of the U.S. produce, for algorithm development, data visualization
The advanced techniques computational language and interactive environment of change, data analysiss and numerical computations.
MATLAB softwares are two contaminations of matrix＆laboratory, mean matrix factory (matrix labotstory).It is
The main high-tech meter in the face of scientific algorithm, visualization and programming of interactive issued by mathworks companies of the U.S.
Calculate environment.It will be the modeling and simulation of numerical analysis, matrix calculus, science data visualization and nonlinear dynamic system etc. all
Many powers are integrated in a wieldy windowing environment, are scientific research, engineering design and must be carried out effectively
Numerous scientific domains of numerical computations provide a kind of comprehensive solution.MATLAB can carry out matrix operationss, draw letter
Number and data, realize algorithm, create user interface, connect program of other programming languages etc., be mainly used in engineering calculation, control
Set up the fields such as meter, signal processing and communication, image procossing, signal detection, financial Modeling and Design and analysis.
In addition, the processor 6 also includes corner derivative unit, letter is fitted by the DIFF () function pair of MATLAB softwares
Number calculates first derivative, obtains corner first derivative function, according to corner first derivative function, obtains corner first derivative function
Curve；Standard deviation computing unit, reads corner first derivative data from the operation interval of MATLAB softwares, public according to standard deviation
Formula, is calculated the standard deviation of corner first derivative curve；
In MATLAB softwares, DIFF () function be used for differentiate or vector sum matrix comparison.
The processor 6 also includes, comparing unit, for the standard deviation of the corner first derivative curve is turned with default
The standard deviation of angle first derivative curve compares, and determines the running status of disconnecting switch.The default corner first derivative curve
Standard difference be the first preset value and the second preset value, first preset value is that the corner single order under normal operation is led
The standard deviation of number curve, second preset value be close a floodgate it is not in place in the case of corner first derivative curve standard deviation.
If as shown in figure 5, the standard deviation of the corner first derivative curve is more than first preset value and described second
Preset value, and corner first derivative is less than zero, it is determined that there are disconnecting link jam faults in the disconnecting switch.
The system also includes wireless transport module, and the wireless transport module includes wireless base station 7 and wireless main website 8,
For sending the running status of the disconnecting switch.
The system also includes display 9, for showing the running status of the disconnecting switch.
As shown in fig. 6, second aspect, a kind of disconnecting switch outer corner measurement for on-line monitoring of embodiment of the present invention offer
Method, methods described include：
Output corner angle during detection disconnecting switch divide-shut brake；
The frequency and time for obtaining the crank degree is set；
According to the crank degree, rotation curve is obtained；
Function Fitting is carried out to the rotation curve, fitting function is obtained；
First derivative is calculated to the fitting function, corner first derivative function is obtained, according to the corner first derivative
Function, obtains corner first derivative function curve；
It is calculated the standard deviation of the corner first derivative curve；
Determine the running status of disconnecting switch.
From above technical scheme, a kind of disconnecting switch outer corner measurement system for on-line monitoring that the present invention is provided
And method, install rotary angle transmitter in rotating shaft additional, it is without the need for dismantling to existing structure, easy for installation, it is mutual by wireless network
Connection, completes the on-line monitoring to all disconnecting switch of transformer station；Being capable of each disconnecting switch division of Real-time Collection and display transformer station
Crank degree during lock, detection and isolation switch fault situation include but is not limited to not in place, the disconnecting link bite etc. that closes a floodgate, monitoring side
Just, accuracy of judgement.
Those skilled in the art will readily occur to its of the present invention after considering description and putting into practice invention disclosed herein
Its embodiment.The application is intended to any modification of the present invention, purposes or adaptations, these modifications, purposes or
Person's adaptations follow the general principle of the present invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be appreciated that the precision architecture for being described above and being shown in the drawings is the invention is not limited in, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is limited only by appended claim.
Claims (7)
1. it is a kind of for on-line monitoring disconnecting switch outer corner measurement system, the system includes disconnecting switch, described to keep apart
Close the rotating shaft and the insulator being connected with the rotating shaft for including that powder operation device is connected with the powder operation device, it is characterised in that
The rotating shaft upper end is provided with rotary angle transmitter, and the system also includes：
Rotary angle transmitter, for detecting crank degree during divide-shut brake；
DC power supply unit, for powering to the rotary angle transmitter；
Processor, for obtaining the crank degree of the rotary angle transmitter detection, according to the crank degree, obtains corner
Curve；According to the rotation curve, the running status of the disconnecting switch is determined.
2. it is according to claim 1 it is a kind of for on-line monitoring disconnecting switch outer corner measurement system, it is characterised in that institute
Stating processor includes,
Rotation curve fitting unit, for carrying out Function Fitting to the rotation curve, obtains fitting function；
Corner derivative unit, for calculating first derivative to the fitting function, obtains corner first derivative function, according to described
Corner first derivative function, obtains corner first derivative function curve；
Standard deviation computing unit, for according to the corner first derivative function curve, being calculated corner first derivative curve
Standard deviation；
Comparing unit, for by the standard deviation of the standard deviation of the corner first derivative curve and default corner first derivative curve
Compare, determine the running status of disconnecting switch.
3. it is according to claim 1 it is a kind of for on-line monitoring disconnecting switch outer corner measurement system, it is characterised in that institute
Stating processor also includes,
Corner acquisition parameter setting unit, for arranging the frequency and time that obtain the crank degree.
4. it is according to claim 1 it is a kind of for on-line monitoring disconnecting switch outer corner measurement system, it is characterised in that institute
Stating system also includes display, for showing the running status of the disconnecting switch.
5. it is according to claim 2 it is a kind of for on-line monitoring disconnecting switch outer corner measurement system, it is characterised in that institute
Comparing unit is stated, if being additionally operable to the standard of the standard deviation more than default corner first derivative curve of the corner first derivative curve
Difference, and corner first derivative is less than zero, it is determined that there are disconnecting link jam faults in the disconnecting switch.
6. it is according to claim 4 it is a kind of for on-line monitoring disconnecting switch outer corner measurement system, it is characterised in that institute
Stating system also includes wireless transport module, for sending the running status of the disconnecting switch.
7. it is a kind of for on-line monitoring disconnecting switch Rotating Angle Measurement, it is characterised in that methods described includes：
Crank degree during detection disconnecting switch divide-shut brake；
The frequency and time for obtaining the crank degree is set；
According to the crank degree, rotation curve is obtained；
Function Fitting is carried out to the rotation curve, fitting function is obtained；
First derivative is calculated to the fitting function, corner first derivative function is obtained, according to the corner first derivative function,
Obtain corner first derivative function curve；
It is calculated the standard deviation of the corner first derivative curve；
Determine the running status of the disconnecting switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611056548.3A CN106546210A (en) | 2016-11-25 | 2016-11-25 | A kind of disconnecting switch outer corner measurement system and method for on-line monitoring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611056548.3A CN106546210A (en) | 2016-11-25 | 2016-11-25 | A kind of disconnecting switch outer corner measurement system and method for on-line monitoring |
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| CN201611056548.3A Pending CN106546210A (en) | 2016-11-25 | 2016-11-25 | A kind of disconnecting switch outer corner measurement system and method for on-line monitoring |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414200A (en) * | 2018-02-14 | 2018-08-17 | 武汉大学 | A kind of high voltage isolator mechanical defect diagnostic method |
| CN110595350A (en) * | 2019-08-29 | 2019-12-20 | 国网四川省电力公司电力科学研究院 | Angular displacement detection system and detection method for high-voltage isolating switch |
| CN110966915A (en) * | 2019-08-19 | 2020-04-07 | 平高集团有限公司 | Isolator manufacturing method and driving mechanism output corner-temperature testing device |
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| CN202794455U (en) * | 2012-08-07 | 2013-03-13 | 国家电网公司 | Closing-in-place monitoring device of isolating switch |
| CN203932794U (en) * | 2014-06-10 | 2014-11-05 | 广东电网公司惠州供电局 | Electric power system gas insulated combined electric appliance equipment divide-shut brake stroke monitoring system |
| CN105548876A (en) * | 2016-01-28 | 2016-05-04 | 国网北京市电力公司 | Method and device for detection of mechanical features of disconnection switch |
| CN206192321U (en) * | 2016-11-25 | 2017-05-24 | 云南电网有限责任公司电力科学研究院 | A isolator corner measurement system for on -line monitoring |
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2016
- 2016-11-25 CN CN201611056548.3A patent/CN106546210A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202794455U (en) * | 2012-08-07 | 2013-03-13 | 国家电网公司 | Closing-in-place monitoring device of isolating switch |
| CN203932794U (en) * | 2014-06-10 | 2014-11-05 | 广东电网公司惠州供电局 | Electric power system gas insulated combined electric appliance equipment divide-shut brake stroke monitoring system |
| CN105548876A (en) * | 2016-01-28 | 2016-05-04 | 国网北京市电力公司 | Method and device for detection of mechanical features of disconnection switch |
| CN206192321U (en) * | 2016-11-25 | 2017-05-24 | 云南电网有限责任公司电力科学研究院 | A isolator corner measurement system for on -line monitoring |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414200A (en) * | 2018-02-14 | 2018-08-17 | 武汉大学 | A kind of high voltage isolator mechanical defect diagnostic method |
| CN110966915A (en) * | 2019-08-19 | 2020-04-07 | 平高集团有限公司 | Isolator manufacturing method and driving mechanism output corner-temperature testing device |
| CN110595350A (en) * | 2019-08-29 | 2019-12-20 | 国网四川省电力公司电力科学研究院 | Angular displacement detection system and detection method for high-voltage isolating switch |
| CN110595350B (en) * | 2019-08-29 | 2024-04-09 | 国网四川省电力公司电力科学研究院 | High-voltage isolating switch angular displacement detection system and detection method thereof |
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