CN108398635A - A kind of high voltage isolator mechanical defect diagnostic method based on output power of motor detection - Google Patents
A kind of high voltage isolator mechanical defect diagnostic method based on output power of motor detection Download PDFInfo
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- CN108398635A CN108398635A CN201810151924.XA CN201810151924A CN108398635A CN 108398635 A CN108398635 A CN 108398635A CN 201810151924 A CN201810151924 A CN 201810151924A CN 108398635 A CN108398635 A CN 108398635A
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- disconnecting switch
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
- G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The present invention relates to a kind of high voltage isolator mechanical defect diagnostic methods based on output power of motor detection, output power of motor in gained disconnecting switch action process is detected according to power rotation angle detecting apparatus (4), transmission shaft rotational angle draws output power of motor corner condition curve (1) in disconnecting switch action process, the power corner standard curve (2) of the type disconnecting switch is calculated by electromechanical Coupling Model (5), comparator (6) is by comparing tested disconnecting switch power corner condition curve (1) and power corner standard curve (2) and the stop angle of the good power corner history curve (3) of operating status, rigid close angle degree, engage peak value, power mean data, to judge the machine performance of tested disconnecting switch.The present invention can provide effective diagnostic method for disconnecting switch installation and debugging, repair and maintenance personnel when detection and isolation switchs machine performance.
Description
Technical field
The present invention relates to high voltage isolator, it is specifically related to a kind of high_voltage isolation detected based on output power of motor and opens
Shut down tool defect diagnostic method.
Background technology
High voltage isolator is the high-tension switch gear that dosage is more in electric system, and long-term work turns in outdoor environment
Dynamic or transmission mechanism is chronically exposed in severe atmospheric environment, is endured the erosion of wind and frost sleet to the fullest extent, is susceptible to various accident defects,
It is mainly shown as Insulator detection, galvanic circle fever, control failure, corrosion bite at driving joint.
Disconnecting switch Frequent Accidents constitute larger threat, but corresponding fault detection and diagnosis technology to the safety of China's power grid
It is also in the Primary Study stage, the mechanical breakdowns such as, corrosion bite not in place in particular for stroke, presently relevant checkout and diagnosis side
There are obvious shortcomings for method, such as：1) hand torque sensor checkout and diagnosis method, passes through the power on manual-operating mechanism handle
Square sensor starts action process operational torque to measure isolation, and detection and isolation switchs machine performance, this method operation letter accordingly
It is single, but " at the uniform velocity " swinging handle is required when measurement, and the rotation that can not possibly remain a constant speed when crank handle is found in practical application, it surveys
Amount gained torque data fluctuations are larger, and severe jamming is caused to machine performance judgement；2) driving motor current detecting diagnosis, root
Carry out detection and isolation according to disconnecting switch action process operating mechanism box current of electric envelope and switch machine performance, powers in motor electric
In the case that pressure is stablized, the change of disconnecting switch machine performance can be reacted to a certain extent by detecting the current of electric envelope of drafting
Change, but the supply voltage that disconnecting switch operating mechanism box is powered in practical application leads to current of electric there are the fluctuation of randomness
It changes, causes to be difficult to judge that the fluctuation of current of electric envelope is caused by by machine performance being changed or due to power supply electricity
Caused by pressure fluctuation；3) power input to machine detects, and machine performance is switched come detection and isolation according to power input to a machine curve,
Power input to a machine is subtracted obtains output power of motor by slippages power inside motor, which directly feeds negative
It carries, and the loss power of motor and motor operating voltage, electric current, motor model etc. are related, are not fixed values, so cannot basis
Isolator operating mechanism case power input to machine curve carrys out detection and isolation switch machine performance.《A kind of outdoor high-voltage is kept apart
The detection device and detection method of pass》The power detected in (application No. is CN201410333992.X) patent is that detection is kept apart
Close operating mechanism box power input to machine.
Disconnecting switch machine performance changes, and when such as there is corrosion bite problem, causes to move vice division chief's friction coefficient increasing
Add, causes to move vice division chief's frictional resistance moment increase, and then its operational torque value is made to increase, and when electric operating, operational torque is
By in operating mechanism box output power of motor provide, so can by detect operating mechanism box output power of motor come judge every
Leave pass machine performance.
Invention content
For background technology there are the problem of, the present invention proposes that a kind of high_voltage isolation detected based on output power of motor is opened
Shut down tool defect diagnostic method, by the work(of the data and the model disconnecting switch that detect power of motor-rotation angle detecting apparatus
Rate-corner standard curve or the good history curve of operating status are compared, and judge to be tested disconnecting switch machine performance,
Reference is provided for the machine performance diagnosis of disconnecting switch, to carry out rational repair and maintenance management work to disconnecting switch, really
Protect the safe and stable operation of disconnecting switch.
Method proposed by the present invention can accurately detect under presence output power of motor in isolator operating mechanism case
With transmission shaft rotational angle, disconnecting switch is carried out in conjunction with its power-corner standard curve or the good history curve of operating status
Mechanical fault diagnosis.
To achieve the above object, the present invention uses following technical proposals：
A kind of high voltage isolator mechanical defect diagnostic method based on output power of motor detection, by turning power-
Angle detecting device (4) measures obtained power-corner condition curve (1) and power-corner standard curve (2), operating status are good
Good power-corner history curve (3) is compared by comparing device (6), determines defect state existing for disconnecting switch.
The power-corner condition curve (1) is obtained by power-rotation angle detecting apparatus (4) measurement；Power-turns
Angle detecting device (4) includes output power of motor detection (7), transmission shaft roll angle inspection (8), data acquisition controller (9)；Data
Acquisition controller (9) controls disconnecting switch driving motor and starts, while acquiring output power of motor detection (7), transmission Shaft angle
Detect the power and angle data of (8).
The power-corner standard curve (2) is by establishing the electromechanical Coupling Model of disconnecting switch (5) simulation calculation
It obtains.
The power-corner history curve (3) includes that all previous power-rotation angle detecting apparatus (4) of disconnecting switch measures
The power arrived-corner condition curve (1) and corresponding machine performance information.
The comparator (6) is to compare power-corner condition curve (1) and power-corner standard curve (2), operation
The stop angle of power in good condition-corner history curve (3), rigid close angle degree are (i.e.：Contact fingertip is driven shaft rotation when just contacting
Dynamic angle), engagement peak value (i.e.：Output power of motor maximum instantaneous value in contact fingertip engagement process), power mean data.Such as
0.5 ° smaller than normal condition of fruit stop angle or more, then there are stroke defects not in place for disconnecting switch；It is engaged in fingertip fingertip
Stage, if just 0.5 ° smaller than normal condition of close angle degree or more or engagement peak value are bigger 5W or more than normal condition, disconnecting switch
There are three-phase not same period defects；In the non-engagement stage of fingertip fingertip, if the big 2.5W of output power of motor average ratio normal condition
More than, then there are bite defects for disconnecting switch.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of high voltage isolator mechanical defect diagnostic method based on output power of motor detection proposed by the present invention,
Do not change in the case that damage containment switchs original shafting, the motor that can accurately measure during the electronic divide-shut brake of disconnecting switch is defeated
Go out power and transmission shaft rotational angle, and according to detection data, power-corner in conjunction with obtained by its electromechanical Coupling Model simulation calculation
Standard curve and the good power of operating status-corner history curve carry out machine performance judgement to tested disconnecting switch, are phase
It closes technical staff's detection and isolation switch machine performance and reference is provided.
Description of the drawings
Fig. 1 is that a kind of high voltage isolator mechanical defect diagnostic method detected based on output power of motor of the present invention is former
Reason figure；
Fig. 2 is power-rotation angle detecting apparatus detection scheme of installation of the present invention；
Output power of motor-rotation curve when Fig. 3 is GW4A-126 type disconnecting switch difference machine performances；
Fig. 4 is to use patent《A kind of detection device and detection method of outdoor high-voltage isolating switch》(application No. is
CN201410333992.X the GW4A-126 type disconnecting switch motors in normal mechanical state that power detecting method measures in)
The asynchronous power input to machine of power source supplying voltage-transmission shaft rotation curve；
Fig. 5 be the GW4A-126 types in normal mechanical state that are measured using power-rotation angle detecting apparatus of the present invention every
Leave the asynchronous output power of motor of powered-down electromechanical source supply voltage-transmission shaft rotation curve；
In Fig. 3, curve 1 is the output power of motor-of making process when GW4A-126 type disconnecting switch machine performances are normal
Transmission shaft rotation curve, curve 2 be there are three-phase not the same period when output power of motor-rotation curve, curve 3 be there are bites
Output power of motor-rotation curve when failure.
In Fig. 4, curve 1,2,3,4 is respectively GW4A-126 type isolator operating mechanism case motor power supply voltages point
Not Wei 380V, 390V, 400V, 408V when power input to machine-transmission shaft rotation curve.
In Fig. 5,4 curves are respectively that GW4A-126 type isolator operating mechanism case motor power supply voltages are respectively
Output power of motor-transmission shaft rotation curve when 380V, 390V, 400V, 408V.
Specific implementation mode
Below with reference to the embodiments and with reference to the accompanying drawing further being illustrated to technical scheme of the present invention.
Realize that the method for the present invention includes the following steps：
Step 1, the output power of motor detection part (7) of power-rotation angle detecting apparatus (4) is installed on motor power-supply wire
Side, output power of motor when detecting disconnecting switch electric operating；Transmission shaft roll angle inspection component (8) is installed on disconnecting switch
On transmission shaft, to measure the rotational angle of transmission shaft.And the output of two detection parts is connected to data acquisition controller
(9), the start and stop of data acquisition controller (9) control motor, and detection data is acquired；Line schematic diagram such as Fig. 2 is installed
It is shown.
Step 2, it is ensured that after wiring is correct, starts disconnecting switch Action Button, make it be run under electric operating mode, work(
Rate-rotation angle detecting apparatus (4) measures output power-rotation curve of disconnecting switch action process operating mechanism box motor.
Step 3, comparator (6) is by the power measured-corner condition curve (1) and power-corner standard curve, operation shape
The good power of state-corner history curve is compared, equal by the stop angle of curve, rigid close angle degree, engagement peak value, power
Value Data judges tested disconnecting switch machine performance.
In the present embodiment, it is applied to a kind of high voltage isolator mechanical defect based on output power of motor detection above
Diagnostic method includes power-corner condition curve (1), power-corner standard curve (2) (when reference user does not have emulation
When the condition of calculating, it can also be measured by power-rotation angle detecting apparatus (4) and pass through disconnecting switch manufacturer professional technique people
Obtained in the disconnecting switch of normal condition after member's debugging), power-corner history curve (3), power-rotation angle detecting apparatus
(4), electromechanical Coupling Model (5), comparator (6).
See Fig. 1, this illustrates a kind of high voltage isolator mechanical defect detected based on output power of motor of the present invention
Diagnosis principle figure；
See Fig. 2, this illustrates power in the present invention-rotation angle detecting apparatus detection scheme of installation；
See Fig. 3, it is bent that this illustrates the asynchronous output power of motor of GW4A-126 type disconnecting switch machine performances-corner
Line, curve 1 is output power of motor-transmission shaft rotation curve when machine performance is normal in figure, and curve 2 is that there are three-phase differences
Output power of motor-transmission shaft rotation curve when the phase, curve 3 are that there are output power of motor-transmission shafts when jam faults
Rotation curve.The stop angle of three curves is identical (when i.e. disconnecting switch stops operating, the angle of transmission shaft rotation)；Curve 2
Rigid close angle degree (when contact fingertip just contacts in disconnecting switch making process, transmission shaft rotation angle) θ2Less than curve 1
Just close angle, θ1, engagement peak value is significantly greater than the normal condition of curve 1 in contact fingertip engagement process, and rotates 0 in transmission shaft
~θ2In range, curve 2 and the output power of motor of curve 1 are not much different, thus 2 corresponding machine performance of curve be three-phase not
The same period；In the non-engagement stage of fingertip fingertip, 3 corresponding output power of motor of curve when normal condition go curve 1 obviously than
Greatly, thus 3 corresponding disconnecting switch of curve there are jam faults.By the comparative analysis of measured curve, illustrate using the present invention
Mechanical defect diagnostic method can be distinguish diagnosis to disconnecting switch machine performance, and its each state lower curve changing rule with
The description of Fig. 1 criterions is consistent.
Contrast test：
Be utilized respectively two kinds of distinct methods of Fig. 4, Fig. 5 to the GW4A-126 types disconnecting switch in normal mechanical state into
Row power detection contrast test, Fig. 4 are the GW4A-126 type disconnecting switch motor power supply voltages in normal mechanical state
Asynchronous power input to machine-transmission shaft rotation curve；Fig. 5 is in normal mechanical shape for what device using the present invention measured
The asynchronous output power of motor of GW4A-126 type disconnecting switch motor power supply voltages-transmission shaft rotation curve of state.
As seen from Figure 4 under same machine performance disconnecting switch power input to machine with motor operating voltage raising
And increase, and there are notable differences for input power-rotation curve of different operating voltage；Motor work electricity as seen from Figure 5
Asynchronous disconnecting switch output power of motor-transmission shaft rotation curve is pressed to essentially coincide.Since disconnecting switch is in just always
Normal machine performance, the power that theoretically its each making process needs is identical, i.e. power-rotation curve of making process ought to base
This coincidence can be obtained in conjunction with the curve of Fig. 4 and Fig. 5：It is unable to detection and isolation according to power input to machine-transmission shaft rotation curve
Machine performance is switched, machine performance effectively can be switched by detection and isolation according to output power of motor-transmission shaft rotation curve.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (5)
1. a kind of high voltage isolator mechanical defect diagnostic method based on output power of motor detection, it is characterised in that：By work(
Rate-rotation angle detecting apparatus (4) measures obtained power-corner condition curve (1) and power-corner standard curve (2), power-
Corner history curve (3) is compared by comparing device (6), determines defect state existing for disconnecting switch.
2. the high voltage isolator mechanical defect diagnostic method according to claim 1 based on output power of motor detection,
It is characterized in that：The power-corner condition curve (1) is obtained by power-rotation angle detecting apparatus (4) measurement；Power-corner
Detection device (4) includes output power of motor detection module (7), transmission shaft roll angle inspection module (8), data acquisition controller
(9)；Data acquisition controller (9) controls disconnecting switch driving motor and starts, while acquiring output power of motor detection module
(7), the power and angle data of transmission shaft roll angle inspection module (8).
3. the high voltage isolator mechanical defect diagnostic method according to claim 1 based on output power of motor detection,
It is characterized in that：The power-corner standard curve (2) is by establishing the electromechanical Coupling Model of disconnecting switch (5) emulation meter
It obtains.
4. the high voltage isolator mechanical defect diagnostic method according to claim 1 based on output power of motor detection,
It is characterized in that：The power-corner history curve (3) includes that all previous power-rotation angle detecting apparatus (4) of disconnecting switch measures
The power arrived-corner condition curve (1) and corresponding machine performance information.
5. the high voltage isolator machinery based on output power of motor detection according to any one of claim 1-4 lacks
Fall into diagnostic method, it is characterised in that：The comparator (6) compares power-corner condition curve (1) and power-corner standard is bent
Stop angle, rigid close angle degree, engagement peak value, the power mean data of line (2), power-corner history curve (3)；If stopped
0.5 ° smaller than normal condition of angle or more, then there are stroke defects not in place for disconnecting switch；In fingertip fingertip engagement stage, such as
0.5 ° smaller than normal condition of rigid close angle degree of fruit or more or engagement peak value are bigger 5W or more than normal condition, then there are three-phases for disconnecting switch
Not same period defect；In the non-engagement stage of fingertip fingertip, if the big 2.5W or more of output power of motor average ratio normal condition, every
Leaving pass, there are bite defects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810151924.XA CN108398635A (en) | 2018-02-14 | 2018-02-14 | A kind of high voltage isolator mechanical defect diagnostic method based on output power of motor detection |
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| CN201810151924.XA CN108398635A (en) | 2018-02-14 | 2018-02-14 | A kind of high voltage isolator mechanical defect diagnostic method based on output power of motor detection |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530625A (en) * | 2019-09-17 | 2019-12-03 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of high voltage isolator mechanical fault diagnosis device and 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 |
| CN111562492A (en) * | 2020-05-08 | 2020-08-21 | 广东电网有限责任公司 | Remote monitoring system for operating state of disconnecting link motor |
| CN113533841A (en) * | 2021-06-08 | 2021-10-22 | 云南电网有限责任公司红河供电局 | Non-invasive detection method for power of high-voltage isolating switch driving motor |
| CN114355183A (en) * | 2021-12-03 | 2022-04-15 | 云南电网有限责任公司红河供电局 | Open type isolating switch mechanical fault diagnosis method based on rotating speed observation |
| CN116184182A (en) * | 2022-12-15 | 2023-05-30 | 国网安徽省电力有限公司电力科学研究院 | GIS isolating switch mechanical state identification method based on curve similarity |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN113533841A (en) * | 2021-06-08 | 2021-10-22 | 云南电网有限责任公司红河供电局 | Non-invasive detection method for power of high-voltage isolating switch driving motor |
| CN114355183A (en) * | 2021-12-03 | 2022-04-15 | 云南电网有限责任公司红河供电局 | Open type isolating switch mechanical fault diagnosis method based on rotating speed observation |
| CN116184182A (en) * | 2022-12-15 | 2023-05-30 | 国网安徽省电力有限公司电力科学研究院 | GIS isolating switch mechanical state identification method based on curve similarity |
| CN116184182B (en) * | 2022-12-15 | 2024-04-12 | 国网安徽省电力有限公司电力科学研究院 | GIS isolating switch mechanical state identification method based on curve similarity |
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