CN206192321U - A isolator corner measurement system for on -line monitoring - Google Patents
A isolator corner measurement system for on -line monitoring Download PDFInfo
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- CN206192321U CN206192321U CN201621277143.8U CN201621277143U CN206192321U CN 206192321 U CN206192321 U CN 206192321U CN 201621277143 U CN201621277143 U CN 201621277143U CN 206192321 U CN206192321 U CN 206192321U
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- disconnecting switch
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Abstract
The utility model discloses an isolator corner measurement system for on -line monitoring, system include rotary angle transmitter, dc supply unit and treater. The utility model discloses installing rotary angle transmitter additional in the pivot, need not to dismantle current structure, simple to operate through the wireless network interconnection, accomplishes the on -line monitoring to all isolator of transformer substation, can gather in real time and show each isolator divide -shut brake in -process corner angle of transformer substation, judge that the isolator trouble condition is not in place including but not limited to closing a floodgate, switch bite etc. The monitoring is convenient, and it is accurate to judge.
Description
Technical field
The utility model is related to high voltage electric equipment technical field, more particularly to a kind of disconnecting switch for monitoring on-line
Outer corner measurement system.
Background technology
In power system, disconnecting switch consumption is usually 2-4 times of breaker consumption, is a kind of maximum high pressure of consumption
Switchgear.High voltage isolator is generally used cooperatively with breaker, is mainly used in grid switching operation, insulating power supply or division small
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 security.The structural principle of disconnecting switch is relatively easy, usage amount is big, functional reliability requirement is high, but
Power supply administration can not show a candle to transformer and breaker to its attention degree, and its processing technology, installation and debugging and quality control are often given birth to
Product department is ignored.Because disconnecting switch works in outdoor environment, rotate or transmission mechanism be chronically exposed in severe atmospheric environment,
Endure the erosion of wind and frost sleet to the fullest extent, various accident defects occurs not in time, easily in operation maintenance in addition.
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 overheat, simultaneously because operational torque increase is likely to result in pillar porcelain insulator damages even fracture.These typical isolations
In switch fault in addition to galvanic circle generates heat, 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.
Current disconnecting switch mechanical breakdown does not cause production unit, operation department, the enough attention of scientific research institution, its
Mechanical failure diagnostic method is not perfect with equipment.Existing diagnostic techniques such as ultrasonic examination technology, vibroacoustics method, infrared
Heat detection etc. is all directed to defects of insulator, the mechanical breakdown such as not in place for corrosion bite, stroke, it is many at present with the precautionary measures and
Based on experience diagnosis, rarely has directly perceived, effective diagnostic system.No matter existing detection and diagnosis system is from security, economy point
On, cannot all meet power system security, stabilization, expanding economy requirement.
Utility model content
Goal of the invention of the present utility model is to provide a kind of disconnecting switch outer corner measurement system energy for monitoring on-line
Crank degree during each disconnecting switch divide-shut brake of enough Real-time Collections and display transformer station, detection and isolation switch fault situation includes
But not in place, the disconnecting link bite etc. that closes a floodgate is not limited to, monitoring is convenient, accuracy of judgement.
According to embodiment of the present utility model, there is provided a kind of disconnecting switch outer corner measurement system for monitoring on-line,
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 being powered to the rotary angle transmitter；
Processor, the crank degree for obtaining 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, and the crank degree is obtained for setting
Frequency and time.
Preferably, the system also includes display, the running status for showing the disconnecting switch.
Preferably, the comparing unit, if the standard deviation for being additionally operable to the corner first derivative curve is 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, the running status for sending the disconnecting switch.
From above technical scheme, a kind of disconnecting switch outer corner measurement for monitoring on-line that the utility model is provided
System, installs rotary angle transmitter additional in rotating shaft, easy for installation without being dismantled to existing structure, by interconnected with wireless network,
Complete the on-line monitoring to all disconnecting switch of transformer station；Being capable of each disconnecting switch divide-shut brake mistake of Real-time Collection and display transformer station
Crank degree in journey, detection and isolation switch fault situation includes but is not limited to not in place, the disconnecting link bite etc. that closes a floodgate, and monitoring is convenient,
Accuracy of judgement.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Needed for the accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
The structural representation of the disconnecting switch that Fig. 1 is provided for the utility model embodiment；
A kind of knot of disconnecting switch outer corner measurement system for monitoring on-line that Fig. 2 is provided for the utility model embodiment
Structure schematic diagram；
Fig. 3 illustrates for the rotary angle transmitter that the utility model embodiment is provided with the wiring of DC power supply unit and processor
Figure；
Three kinds of rotation curves of ruuning situation of disconnecting switch that Fig. 4 is provided for the utility model embodiment；
The corner first derivative curve of three kinds of ruuning situations of disconnecting switch that Fig. 5 is provided for the utility model embodiment.
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- displays.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clear, complete description, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
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
A kind of most electrical equipment is used in powered-down device, the principles and structure of itself is fairly simple, but because usage amount is big, work
Make that reliability requirement is high, to electric substation, the design of power plant, set up and the influence of safe operation is larger.Disconnecting switch it is main
Feature is, without arc extinguishing ability, can only to divide in the case of no load current, close circuit.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 again after disconnection.The general interlock with maloperation when preventing from switching on-load, it is sometimes desirable to which pin is prevented big
Failure magneticaction under disconnect switch.
As depicted in figs. 1 and 2, a kind of disconnecting switch corner for monitoring on-line that the utility model embodiment is provided is surveyed
Amount system, the system include disconnecting switch (using model GW6H-252 types single-column vertical telescopic outdoor high-voltage alternating current every
Leave pass), the disconnecting switch includes powder operation device 3 (model CJ2 types electric operating device) and the phase of the powder operation device 3
The rotating shaft 2 of connection and the insulator 4 being connected with the rotating shaft 2, the upper end of the rotating shaft 2 are provided with rotary angle transmitter 1, and the corner is passed
Sensor 1 is the sensor for measuring or monitoring object rotational angle, for example wind turbine shaft rotational angle, welded pipe rotational angle
Monitoring and the measurement of offshore platform positioning corner etc..
The rotary angle transmitter 1 uses TDR-BZ-V-180 ° of-Φ 38-II magnetic sensitive angle sensor, by DC power supply unit
5 power supplies (using DC24V Switching Power Supplies), the rotary angle transmitter 1 connects with the rotating shaft 2 using flexible clutch viscosity is coaxial
Connect, for detecting crank degree during divide-shut brake；
Processor 6, the crank degree for obtaining 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.
Specific 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, black wiring connection DC24V power cathode (0 electricity
Position), yellow wiring is the output signal end of corner inductor 1, connects the input channel of processor 6, 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 implementation
Example can be set using the collection of LabVIEW software platforms according to actual conditions, and it is 512Hz for example to set sample frequency, 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 set breakpoint, with dynamic
Result, single step execution of picture mode display data and its subprogram (sub- VI) 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 analysis and numerical computations.
MATLAB softwares are two contaminations of matrix＆laboratory, mean matrix factory (matrix labotstory).It is
The main high-tech meter in face of scientific algorithm, visualization and programming of interactive issued by mathworks companies of the U.S.
Calculate environment.It is all by the modeling and simulation of numerical analysis, matrix computations, science data visualization and nonlinear dynamic system etc.
Many powers are integrated in a wieldy windowing environment, be scientific research, engineering design and must carry out effectively
Numerous scientific domains of numerical computations provide a kind of comprehensive solution.MATLAB can carry out matrix operation, draw letter
Number and data, algorithm, the program etc. for creating user interface, connecting other programming languages are realized, be mainly used in engineering calculation, control
Set up the fields such as meter, signal transacting 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 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 comparing.
The processor 6 also includes, comparing unit, for the standard deviation of the corner first derivative curve to be 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 be normal operation under corner single order lead
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,
Running status for sending the disconnecting switch.
The system also includes display 9, the running status for showing the disconnecting switch.
From above technical scheme, a kind of disconnecting switch outer corner measurement for monitoring on-line that the utility model is provided
System, installs rotary angle transmitter additional in rotating shaft, easy for installation without being dismantled to existing structure, by interconnected with wireless network,
Complete the on-line monitoring to all disconnecting switch of transformer station；Being capable of each disconnecting switch divide-shut brake mistake of Real-time Collection and display transformer station
Crank degree in journey, detection and isolation switch fault situation includes but is not limited to not in place, the disconnecting link bite etc. that closes a floodgate, and monitoring is convenient,
Accuracy of judgement.
Those skilled in the art will readily occur to the utility model after considering specification and putting into practice invention disclosed herein
Other embodiments.The application is intended to any modification of the present utility model, purposes or adaptations, these changes
Type, purposes or adaptations follow general principle of the present utility model and including the undocumented this technology of the utility model
Common knowledge or conventional techniques in field.Description and embodiments be considered only as it is exemplary, it is of the present utility model true
Positive scope and spirit are pointed out by following claim.
It should be appreciated that the utility model is not limited to the accurate knot for being described above and being shown in the drawings
Structure, and can without departing from the scope carry out various modifications and changes.Scope of the present utility model only will by appended right
Ask to limit.
Claims (6)
1. it is a kind of for monitor on-line disconnecting switch outer corner measurement system, the system include disconnecting switch, it is described to keep apart
Pass includes the rotating shaft that powder operation device is connected with the powder operation device and the insulator being connected with the rotating shaft, 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 being powered to the rotary angle transmitter；
Processor, the crank degree for obtaining 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 monitor on-line 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 monitor on-line disconnecting switch outer corner measurement system, it is characterised in that institute
Stating processor also includes,
Corner acquisition parameter setting unit, frequency and the time of the crank degree are obtained for setting.
4. it is according to claim 1 it is a kind of for monitor on-line disconnecting switch outer corner measurement system, it is characterised in that institute
Stating system also includes display, the running status for showing the disconnecting switch.
5. it is according to claim 2 it is a kind of for monitor on-line disconnecting switch outer corner measurement system, it is characterised in that institute
Comparing unit is stated, if the standard deviation for being additionally operable to the corner first derivative curve is more than the standard of default 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 monitor on-line disconnecting switch outer corner measurement system, it is characterised in that institute
Stating system also includes wireless transport module, the running status for sending the disconnecting switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621277143.8U CN206192321U (en) | 2016-11-25 | 2016-11-25 | A isolator corner measurement system for on -line monitoring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621277143.8U CN206192321U (en) | 2016-11-25 | 2016-11-25 | A isolator corner measurement system for on -line monitoring |
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| CN206192321U true CN206192321U (en) | 2017-05-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546210A (en) * | 2016-11-25 | 2017-03-29 | 云南电网有限责任公司电力科学研究院 | A kind of disconnecting switch outer corner measurement system and method for on-line monitoring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546210A (en) * | 2016-11-25 | 2017-03-29 | 云南电网有限责任公司电力科学研究院 | A kind of disconnecting switch outer corner measurement system and method for on-line monitoring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210425 Address after: Yunda economic and Technological Development Zone in Yunnan province Kunming city 650217 West Road No. 105 Patentee after: YUNNAN POWER GRID CO., LTD. ELECTRIC POWER Research Institute Address before: Yunda economic and Technological Development Zone in Yunnan province Kunming city 650217 West Road No. 105 Patentee before: YUNNAN POWER GRID CO., LTD. ELECTRIC POWER Research Institute Patentee before: WUHAN HONGMEN ELECTRICAL TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |