CN109708855A - A kind of high voltage isolator division state monitoring method and device - Google Patents
A kind of high voltage isolator division state monitoring method and device Download PDFInfo
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- CN109708855A CN109708855A CN201711009643.2A CN201711009643A CN109708855A CN 109708855 A CN109708855 A CN 109708855A CN 201711009643 A CN201711009643 A CN 201711009643A CN 109708855 A CN109708855 A CN 109708855A
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Abstract
The present invention provides a kind of high voltage isolator division state monitoring method and device, relationship when being operating normally first according to high voltage isolator between main rotary shaft amount of spin and run duration, establish the master pattern of high voltage isolator main rotary shaft movement travel curve, then according to the similarity between main rotary shaft amount of spin and run duration when high voltage isolator actual act between relation curve and master pattern, judge high voltage isolator whether opening and closing in place.Due to technical solution provided by the present invention be according to high voltage isolator actual act and regular event between difference judge high voltage isolator whether opening and closing in place, so judging result is more accurate.
Description
Technical field
The invention belongs to high voltage isolators to test and analyze technical field, and in particular to a kind of high voltage isolator division shape
State monitoring method and device.
Background technique
With the continuous propulsion that the continuous development of China's power industry and smart grid are built, to power equipment intelligence and
The requirement of operational reliability is higher and higher.Deeply, comprehensively promote presence service work meet Guo Wang company construction it is strong
The requirement of smart grid and " three collection five are big " development strategy, is that the interior of equipment of itself condition managing ability improves in modern power network enterprise
It is the inevitable choice of assets whole-life cycle fee in demand.
High voltage isolator is very important in most commonly used primary equipment and substation in power grid once to set
Standby, major function is the safety for guaranteeing High-Voltage Electrical Appliances and device in service work, plays isolation voltage.High_voltage isolation
The normal work of switch is the guarantee of whole transformer station safe and stable operation.Technological problems when due to manufacturing, Yi Ji
The reasons such as environmental pollution when use, long-play, overload operation, contact oxidation and electric arc impact, high_voltage isolation are opened
Pass is likely to occur failure, causes its division not in place.And the division of high voltage isolator is not in place, it will cause electric grid large area
Power outage, not only cause huge economic loss to electric system, and the person of substation maintenance personnel can be jeopardized
Safety.
Detect high voltage isolator division whether conventional method in place, be visually to be seen at the scene by people service personnel
Video when examining, or being acted by acquisition high voltage isolator, according to the visual determination high voltage isolator of service personnel point
Whether in place to close.The accuracy of this detection mode is relatively low, is largely influenced by service personnel's subjective consciousness；And
With the extensive propulsion that smart grid is built, the heavy workload of this maintenance mode is increasing, additionally, due to operation and maintenance
Personnel do not know much have less understanding to devices from different manufacturers performance, cannot meet repair quality well.
Summary of the invention
The purpose of the present invention is to provide a kind of high voltage isolator division state monitoring method and devices, existing for solving
Have in technology detect high voltage isolator division whether in place when the relatively low problem of accuracy.
To achieve the above object, present invention provide the technical scheme that
A kind of high voltage isolator division state monitoring method, includes the following steps:
The amount of spin for detecting its main rotary shaft in high voltage isolator normal movements, it is normal to obtain high voltage isolator
It is bent to establish the movement travel of high voltage isolator main rotary shaft for the relation curve of its main rotary shaft amount of spin and run duration when movement
The master pattern of line；
The main rotary shaft amount of spin includes at least one in driving torque, movement travel and the operation angle of main rotary shaft
Kind；
Relationship during the detection practical divide-shut brake of high voltage isolator between its main rotary shaft amount of spin and run duration
Curve, and the similarity of the relation curve Yu response curve master pattern is calculated, as the stroke phase of high voltage isolator
Like degree；
When high voltage isolator similarity is less than the threshold value of setting, be judged as the divide-shut brake of high voltage isolator less than
Position.
Technical solution provided by the present invention, main axis amount and movement when being operating normally first according to high voltage isolator
Relationship between time establishes the master pattern of its main rotary shaft movement travel curve, then according to high voltage isolator reality
Similarity when movement between main rotary shaft amount of spin and run duration between relation curve and master pattern, judges high_voltage isolation
Switch whether opening and closing in place.Since technical solution provided by the present invention is according to high voltage isolator actual act and normally dynamic
Difference between work judge high voltage isolator whether opening and closing in place, so judging result is more accurate.
Further, the main rotary shaft amount of spin includes driving torque, movement travel and the operation angle of main rotary shaft,
When the master pattern of the high voltage isolator main rotary shaft movement travel curve includes driving torque and the movement of main rotary shaft
Between the master pattern of relation curve, the master pattern of movement travel and run duration relation curve and operation angle and run duration
The master pattern of relation curve；
During high voltage isolator practical divide-shut brake, the relationship of main rotary shaft driving torque and run duration is bent
Line, movement travel and any one and the phase in the relation curve and operation angle of run duration and the relation curve of run duration
Answer similarity between relation curve standard to be less than corresponding given threshold, be judged as the divide-shut brake of high voltage isolator less than
Position.
Using the amount of spin of a variety of main rotary shafts judge high voltage isolator whether opening and closing in place, can further guarantee
To the accuracy of high voltage isolator state-detection.
Further, using the curve similarity algorithm based on Ken Deer similarity factor, the high voltage isolator is calculated
Stroke similarity.
Further, further include following steps:
The vibration signal of its horizontal brace rod in high voltage isolator normal movements is detected, high voltage isolator is obtained
Relation curve when regular event between its horizontal brace rod vibration signal and run duration, establishes high voltage isolator divide-shut brake
The master pattern of oscillating curve in the process；
Determine the value range of characteristic value in high voltage isolator divide-shut brake process vibrations curve master pattern；
During the detection practical divide-shut brake of high voltage isolator between its horizontal brace rod vibration signal and run duration
Relation curve extracts characteristic value therein and sentences when the characteristic value exceeds corresponding value range in oscillating curve master pattern
Break for the divide-shut brake of high voltage isolator it is not in place；
The characteristic value includes starting of oscillation moment, vibration time, crest value number, valley value number, average wave peak amplitude and is averaged
At least one of trough amplitude, at the time of wherein the starting of oscillation moment is that amplitude is greater than the first setting amplitude, vibration time is
It shakes in the moment to the section of setting duration, at the time of mean amplitude of tide is less than the second setting amplitude, crest value number is vibration time
Section internal vibration curve wave crest quantity, valley value number is the trough quantity of the section internal vibration curve of vibration time, average
Wave crest amplitude is the average value of the amplitude of all wave crests in the section of vibration time, and average trough amplitude is the section of vibration time
The average value of the amplitude of interior all troughs.
By according to high voltage isolator main rotary shaft stroke judge its division whether method in place, and according to high_voltage isolation
Switch vibration signal judges whether in place whether method in place combines for its division, can be realized to high voltage isolator division
Double confirmations, be further ensured that the reliability to high voltage isolator state-detection.
Further, the method for asking extreme point to combine with time domain using wavelet analysis obtains high voltage isolator division
In lock operating process in oscillating curve master pattern characteristic value value range.
A kind of high voltage isolator division state monitoring apparatus, including processor, processor be connected with for be arranged to
Survey the displacement rotating encoder at high voltage isolator main rotary shaft；
The displacement rotating encoder is used to detect the amount of spin of high voltage isolator main rotary shaft to be measured；
The processor is used for:
According to the amount of spin of its main rotary shaft in high voltage isolator normal movements, it is normal to obtain high voltage isolator
It is bent to establish the movement travel of high voltage isolator main rotary shaft for the relation curve of its main rotary shaft amount of spin and run duration when movement
The master pattern of line；
Relationship during the detection practical divide-shut brake of high voltage isolator between its main rotary shaft amount of spin and run duration
Curve, and the similarity of the relation curve Yu response curve master pattern is calculated, as the stroke phase of high voltage isolator
Like degree；
When whether high voltage isolator similarity is greater than the threshold value of setting, it is judged as the divide-shut brake of high voltage isolator not
In place；
The main rotary shaft amount of spin includes at least one in driving torque, movement travel and the operation angle of main rotary shaft
Kind.
Further, the main rotary shaft amount of spin includes driving torque, movement travel and the operation angle of main rotary shaft,
When the master pattern of the high voltage isolator main rotary shaft movement travel curve includes driving torque and the movement of main rotary shaft
Between the master pattern of relation curve, the master pattern of movement travel and run duration relation curve and operation angle and run duration
The master pattern of relation curve；
During high voltage isolator practical divide-shut brake, the relationship of main rotary shaft driving torque and run duration is bent
Line, movement travel and any one and the phase in the relation curve and operation angle of run duration and the relation curve of run duration
Answer similarity between relation curve standard to be less than corresponding given threshold, be judged as the divide-shut brake of high voltage isolator less than
Position.
Further, using the curve similarity algorithm based on Ken Deer similarity factor, the high voltage isolator is calculated
Stroke similarity.
Further, the processor is also connected with for being arranged in high voltage isolator horizontal connection vibration of bar to be measured
Sensor；
Vibrating sensor is used to detect the vibration signal of high voltage isolator to be measured；
The processor is also used to:
The vibration signal for obtaining its horizontal brace rod in high voltage isolator normal movements, obtains high voltage isolator
Relation curve when regular event between its horizontal brace rod vibration signal and run duration, establishes high voltage isolator divide-shut brake
The master pattern of oscillating curve in the process；
Determine the value range of characteristic value in high voltage isolator divide-shut brake process vibrations curve master pattern；
During the detection practical divide-shut brake of high voltage isolator between its horizontal brace rod vibration signal and run duration
Relation curve extracts characteristic value therein and sentences when the characteristic value exceeds corresponding value range in oscillating curve master pattern
Break for the divide-shut brake of high voltage isolator it is not in place；
The characteristic value includes starting of oscillation moment, vibration time, crest value number, valley value number, average wave peak amplitude and is averaged
At least one of trough amplitude, at the time of wherein the starting of oscillation moment is that amplitude is greater than the first setting amplitude, vibration time is
It shakes in the moment to the section of setting duration, at the time of mean amplitude of tide is less than the second setting amplitude, crest value number is vibration time
Section internal vibration curve wave crest quantity, valley value number is the trough quantity of the section internal vibration curve of vibration time, average
Wave crest amplitude is the average value of the amplitude of all wave crests in the section of vibration time, and average trough amplitude is the section of vibration time
The average value of the amplitude of interior all troughs.
Further, the method for asking extreme point to combine with time domain using wavelet analysis obtains high voltage isolator division
In lock operating process in oscillating curve master pattern characteristic value value range.
Detailed description of the invention
Fig. 1 is the structure principle chart of embodiment mesohigh disconnecting switch；
Fig. 2 is the schematic diagram that high voltage isolator is arranged in vibrating sensor and displacement encoder in embodiment；
Fig. 3 is the signal acquisition schematic diagram of embodiment mesohigh disconnecting switch；
Fig. 4 is the integrated stand composition of the embodiment mesohigh disconnecting switch division condition detecting system course of work；
Fig. 5 is the schematic diagram of embodiment mesohigh disconnecting switch vibration signal；
Fig. 6 is the time domain waveform of embodiment mesohigh disconnecting switch vibration signal；
Fig. 7 is the frequency-domain waveform figure of embodiment mesohigh disconnecting switch vibration signal；
In Fig. 1: 11 assemble for fingertip side contact tube, and 12 assemble for contact side contact tube, and 2 be insulator, and 3 be operator operation
Mechanism, 41 be operator waling stripe, and 42 be earthing knife-switch waling stripe, and 5 assemble for grounding static contact, and 6 assemble for pedestal, and 7 be reference
Mounting bracket, 8 be ground connection knife bar assembly, and 9 be operator vertical links, and 10 be earthing knife-switch operating mechanism；
In Fig. 2: 201 be cross link, and 202 be active connecting lever, and 203 be active rotating shaft, and 204 be driven spindle, and 205 be drawing
Bar assembly, 206 is are grounded to dress, and 207 be waling stripe, and 208 be earthing knife-switch active connecting lever.
Specific embodiment
The purpose of the present invention is to provide a kind of high voltage isolator division state monitoring method and devices, existing for solving
Have in technology detect high voltage isolator division whether in place when the relatively low problem of accuracy.
To achieve the above object, present invention provide the technical scheme that
A kind of high voltage isolator division state monitoring method, includes the following steps:
The amount of spin for detecting its main rotary shaft in high voltage isolator normal movements, it is normal to obtain high voltage isolator
Its relation curve for rotating main rotary shaft amount of spin and run duration when movement establishes high voltage isolator main rotary shaft movement row
The master pattern of journey curve；
The main rotary shaft amount of spin includes at least one in driving torque, movement travel and the operation angle of main rotary shaft
Kind；
Relationship during the detection practical divide-shut brake of high voltage isolator between its main rotary shaft amount of spin and run duration
Curve, and the similarity of the relation curve Yu response curve master pattern is calculated, as the stroke phase of high voltage isolator
Like degree；
When high voltage isolator similarity is less than the threshold value of setting, be judged as the divide-shut brake of high voltage isolator less than
Position.
Embodiments of the present invention are described further with reference to the accompanying drawing.
The present embodiment provides a kind of high voltage isolator division state monitoring apparatus, for detecting point of high voltage isolator
It closes a floodgate and whether acts in place, the structure chart of high voltage isolator is as shown in Figure 1.
In the present embodiment, high voltage isolator division state monitoring apparatus includes processor, and processor is connected with displacement rotation
Turn encoder and vibrating sensor.Displacement rotating encoder is arranged on the main rotary shaft of high voltage isolator, i.e. master in Fig. 1
On knife vertical links 9, the driving torque of its main rotary shaft, movement travel, operation angle when for detecting high voltage isolator movement
Degree and run duration, vibrating sensor are arranged on horizontal brace rod, including the operator waling stripe 41 and earthing knife-switch level in Fig. 1
Connecting rod 42, the vibration signal of its horizontal brace rod when for detecting high voltage isolator movement, as shown in Figure 2.
Fig. 2 is the top view of Fig. 1 mesohigh disconnecting switch, for the knot for more intuitively indicating high-voltage isolating switch transmission mechanism
Structure composition, has done corresponding simplification to high voltage isolator shown in FIG. 1 in Fig. 2.
In the present embodiment, processor judges that high voltage isolator division is by vibrating sensor and displacement rotating encoder
It is no in place, the schematic diagram of signal acquisition as shown in figure 3, acquisition high voltage isolator vibration signal, torque signal, movement row
Journey and movement angle；The process of judgement is as shown in figure 4, specific as follows:
For vibrating sensor, its working principles are as follows:
The vibration signal of its horizontal brace rod when vibrating sensor detects high voltage isolator regular event, and send place to
Manage device；
After processor receives the vibration signal from vibrating sensor, using modal analysis method for high voltage isolator point
Lock and the vibration data to close a floodgate in the 3ms of front and back are analyzed, and the mode vibration under the normal breaking-closing operating of high voltage isolator is obtained
Type, as shown in Figure 5；
Processor obtains under the normal breaking-closing operating of multiple groups high voltage isolator according to repeated tests test result
Mode Shape, it is established that the standard vibration shape of high voltage isolator vibration signal；
The method for asking extreme point to combine with time domain using wavelet analysis, according to test of many times as a result, obtaining high_voltage isolation
Switch the value range of characteristic value in the master pattern of vibration signal；
When to monitoring collected high voltage isolator Typical Vibration signal data and carrying out feature extraction, by threshold value into
Row judges initial time.It is assumed that playing amplitude is f0, main such as the lower eigenvalue that extracts: (1) starting of oscillation moment Tb, i.e. amplitude are greater than f0
At the time of；(2) vibration time Tz, i.e., at the time of mean amplitude of tide is less than particular value in the starting of oscillation moment to 10ms duration；(3) crest value
Number Nmax, i.e. the wave crest quantity of the section internal vibration curve of vibration time；(4) valley value number Nmin, the i.e. section of vibration time
The trough quantity of internal vibration curve；(5) average wave peak amplitude Fmax, i.e., the average value of the amplitude of all wave crests；(6) average trough
Amplitude Fmin, i.e., the average value of the amplitude of all troughs.
Vibration signal curve when high voltage isolator actual act is detected, and determines feature in actual vibration signal curve
The actual value of value；
Whether the actual value of judging characteristic value is in master pattern in the value range of corresponding eigenvalue, if sentenced
Opening and closing in place when breaking as high voltage isolator actual act, if it was not then being judged as the high voltage isolator actual act time-division
It closes not in place.
For displacement rotating encoder, its working principles are as follows:
The amount of spin of its main rotary shaft when displacement rotating encoder detects high voltage isolator regular event, and send place to
Manage device；The amount of spin of main rotary shaft includes driving torque, movement travel, operation angle and the run duration of main rotary shaft；
After processor receives the amount of spin of high voltage isolator main rotary shaft, by the position and the end that move initial time
The only relative mistake between the position at moment, the high pressure directly measured in conjunction with parameters such as radius, the auxiliary nodes of main rotary shaft
Relationship between disconnecting switch main rotary shaft amount of spin and run duration, including main rotary shaft driving torque and run duration
Between relationship, the relationship between relationship and operation angle and run duration between movement travel and run duration；
It is tested by repeated multiple times experiment, obtains its main axis amount and runing time when high voltage isolator works normally
Between relation curve master pattern, including the master die of relation curve between main rotary shaft driving torque and run duration
Type, relation curve between the master pattern and operation angle and run duration of relation curve between movement travel and run duration
Master pattern；
Displacement rotating encoder acquire high voltage isolator actual act when its main rotary shaft amount of spin, obtain high pressure every
Leave relation curve when closing actual act between its main rotary shaft amount of spin and run duration；
Using the curve similarity algorithm based on Ken Deer similarity factor, high voltage isolator actual act Shi Qizhu is calculated
Relation curve between rotation axis amount of spin and run duration, and the degree of correlation between corresponding master pattern, such as driving torque and fortune
The degree of correlation of relation curve master pattern between dynamic time Relationship curve and driving torque and run duration, movement travel with
The degree of correlation of relation curve master pattern between relation curve and movement travel and run duration between run duration runs angle
The degree of correlation of the relation curve master pattern between relation curve and operation angle and run duration between degree and run duration；
Judge whether above-mentioned each degree of correlation is less than corresponding given threshold, if be all not less than, is judged as high_voltage isolation
Opening and closing in place is switched, is otherwise judged as that the division of high voltage isolator is not in place.
When processor judges height according to the signal any of them of the signal of vibrating sensor and mobile rotary encoder
When pressing the division of disconnecting switch not in place, then it is assumed that the division of high voltage isolator is not in place.
In the present embodiment, in order to guarantee the reliability whether judged in place high voltage isolator division, displacement rotating is compiled
These three amount of spin of driving torque, movement travel and the operation angle of code device acquisition high voltage isolator main rotary shaft, in each biography
In the case that sensor does not break down, judge that the division of high voltage isolator is not in place according to wherein any one amount of spin
When, that is, it is judged as that the division of high voltage isolator is not in place.
In the present embodiment, the amount of spin of vibration signal and main rotary shaft when being acted according to high voltage isolator judges high pressure
Whether in place the division of disconnecting switch, realizes double confirmations to disconnecting switch division position；It, can be only as other embodiments
The amount of spin of vibration signal or main rotary shaft when being acted by high voltage isolator judges that the division of high voltage isolator is
It is no in place.
As other embodiments, main rotary shaft driving torque, switch over travel and the rotation of the detection of displacement rotating encoder
Angle equivalent can use other sensors, direct or indirect detection, as the driving torque of main rotary shaft can pass through driving
Electric current expression of motor etc..
As other embodiments, characteristic value further includes frequency spectrum energy in the master pattern of high voltage isolator vibration signal
The gas pressure characteristics parameter such as amount, envelope curve.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications can be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.
Claims (10)
1. a kind of high voltage isolator division state monitoring method, which comprises the steps of:
The amount of spin for detecting its main rotary shaft in high voltage isolator normal movements obtains high voltage isolator regular event
When its main rotary shaft amount of spin and run duration relation curve, establish high voltage isolator main rotary shaft movement travel curve
Master pattern；
The main rotary shaft amount of spin includes at least one of driving torque, movement travel and operation angle of main rotary shaft；
Relation curve during the detection practical divide-shut brake of high voltage isolator between its main rotary shaft amount of spin and run duration,
And the similarity of the relation curve Yu response curve master pattern is calculated, as the stroke similarity of high voltage isolator；
When high voltage isolator similarity is less than the threshold value of setting, it is judged as that the divide-shut brake of high voltage isolator is not in place.
2. a kind of high voltage isolator division state monitoring method according to claim 1, which is characterized in that the master turns
Moving axis amount of spin includes driving torque, movement travel and the operation angle of main rotary shaft, the high voltage isolator main rotary shaft
The master pattern of movement travel curve includes master pattern, the movement of the driving torque and run duration relation curve of main rotary shaft
Stroke and the master pattern of run duration relation curve and the master pattern of operation angle and run duration relation curve；
During high voltage isolator practical divide-shut brake, the relation curve of main rotary shaft driving torque and run duration,
Movement travel in the relation curve of run duration and operation angle and the relation curve of run duration any one with it is corresponding
Similarity between relation curve standard is less than corresponding given threshold, is judged as that the divide-shut brake of high voltage isolator is not in place.
3. a kind of high voltage isolator division state monitoring method according to claim 1, which is characterized in that use and be based on
The curve similarity algorithm for agreeing Dare similarity factor, calculates the stroke similarity of the high voltage isolator.
4. a kind of high voltage isolator division state monitoring method according to claim 1, which is characterized in that further include as
Lower step:
The vibration signal of its horizontal brace rod in high voltage isolator normal movements is detected, it is normal to obtain high voltage isolator
Relation curve when movement between its horizontal brace rod vibration signal and run duration establishes high voltage isolator divide-shut brake process
The master pattern of middle oscillating curve；
Determine the value range of characteristic value in high voltage isolator divide-shut brake process vibrations curve master pattern；
Relationship during the detection practical divide-shut brake of high voltage isolator between its horizontal brace rod vibration signal and run duration
Curve extracts characteristic value therein, when the characteristic value is beyond corresponding value range in oscillating curve master pattern, judgement
It is not in place for the divide-shut brake of high voltage isolator；
The characteristic value includes starting of oscillation moment, vibration time, crest value number, valley value number, average wave peak amplitude and average trough
At least one of amplitude, at the time of wherein the starting of oscillation moment is that amplitude is greater than the first setting amplitude, when vibration time is starting of oscillation
It is carved into the section of setting duration, at the time of mean amplitude of tide is less than the second setting amplitude, crest value number is the area of vibration time
Between internal vibration curve wave crest quantity, valley value number is the trough quantity of the section internal vibration curve of vibration time, average wave crest
Amplitude is the average value of the amplitude of all wave crests in the section of vibration time, and average trough amplitude is institute in the section of vibration time
There is the average value of the amplitude of trough.
5. a kind of high voltage isolator division state monitoring method according to claim 4, which is characterized in that utilize small echo
The method for asking extreme point to combine with time domain is analyzed, oscillating curve master die during high voltage isolator breaking-closing operating is obtained
The value range of characteristic value in type.
6. a kind of high voltage isolator division state monitoring apparatus, which is characterized in that including processor, processor, which is connected with, to be used for
Displacement rotating encoder at high voltage isolator main rotary shaft to be measured is set；
The displacement rotating encoder is used to detect the amount of spin of high voltage isolator main rotary shaft to be measured；
The processor is used for: according to the amount of spin of its main rotary shaft in high voltage isolator normal movements, obtaining high pressure
The relation curve of its main rotary shaft amount of spin and run duration, establishes the main rotation of high voltage isolator when disconnecting switch is operating normally
The master pattern of axis movement travel curve；
Relation curve during the detection practical divide-shut brake of high voltage isolator between its main rotary shaft amount of spin and run duration,
And the similarity of the relation curve Yu response curve master pattern is calculated, as the stroke similarity of high voltage isolator；
When whether high voltage isolator similarity is greater than the threshold value of setting, be judged as the divide-shut brake of high voltage isolator less than
Position；
The main rotary shaft amount of spin includes at least one of driving torque, movement travel and operation angle of main rotary shaft.
7. a kind of high voltage isolator division state monitoring apparatus according to claim 6, which is characterized in that the master turns
Moving axis amount of spin includes driving torque, movement travel and the operation angle of main rotary shaft, the high voltage isolator main rotary shaft
The master pattern of movement travel curve includes master pattern, the movement of the driving torque and run duration relation curve of main rotary shaft
Stroke and the master pattern of run duration relation curve and the master pattern of operation angle and run duration relation curve；
During high voltage isolator practical divide-shut brake, the relation curve of main rotary shaft driving torque and run duration,
Movement travel in the relation curve of run duration and operation angle and the relation curve of run duration any one with it is corresponding
Similarity between relation curve standard is less than corresponding given threshold, is judged as that the divide-shut brake of high voltage isolator is not in place.
8. a kind of high voltage isolator division state monitoring apparatus according to claim 6, which is characterized in that use and be based on
The curve similarity algorithm for agreeing Dare similarity factor, calculates the stroke similarity of the high voltage isolator.
9. a kind of high voltage isolator division state monitoring apparatus according to claim 6, which is characterized in that the processing
Device is also connected with the vibrating sensor for high voltage isolator horizontal brace rod to be measured to be arranged in；Vibrating sensor is for detecting
The vibration signal of high voltage isolator to be measured；
The processor is also used to:
The vibration signal for obtaining its horizontal brace rod in high voltage isolator normal movements, it is normal to obtain high voltage isolator
Relation curve when movement between its horizontal brace rod vibration signal and run duration establishes high voltage isolator divide-shut brake process
The master pattern of middle oscillating curve；
Determine the value range of characteristic value in high voltage isolator divide-shut brake process vibrations curve master pattern；
Relationship during the detection practical divide-shut brake of high voltage isolator between its horizontal brace rod vibration signal and run duration
Curve extracts characteristic value therein and is judged as when the characteristic value exceeds corresponding value range in oscillating curve master pattern
The divide-shut brake of high voltage isolator is not in place；
The characteristic value includes starting of oscillation moment, vibration time, crest value number, valley value number, average wave peak amplitude and average trough
At least one of amplitude, at the time of wherein the starting of oscillation moment is that amplitude is greater than the first setting amplitude, when vibration time is starting of oscillation
It is carved into the section of setting duration, at the time of mean amplitude of tide is less than the second setting amplitude, crest value number is the area of vibration time
Between internal vibration curve wave crest quantity, valley value number is the trough quantity of the section internal vibration curve of vibration time, average wave crest
Amplitude is the average value of the amplitude of all wave crests in the section of vibration time, and average trough amplitude is institute in the section of vibration time
There is the average value of the amplitude of trough.
10. a kind of high voltage isolator division state monitoring apparatus according to claim 9, which is characterized in that utilize small
The method that wave analysis asks extreme point to combine with time domain obtains oscillating curve standard during high voltage isolator breaking-closing operating
The value range of characteristic value in model.
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| CN201711009643.2A CN109708855A (en) | 2017-10-25 | 2017-10-25 | A kind of high voltage isolator division state monitoring method and device |
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| CN201711009643.2A CN109708855A (en) | 2017-10-25 | 2017-10-25 | A kind of high voltage isolator division state monitoring method and device |
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| CN112816860A (en) * | 2021-01-27 | 2021-05-18 | 河海大学 | Device and method for monitoring switching action state of GIS (gas insulated switchgear) isolating switch in real time |
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| CN113189480A (en) * | 2021-04-22 | 2021-07-30 | 西安交通大学 | Fault diagnosis method and device in closing/opening process of isolating switch |
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