CN109870143A - The graph scanning recognition methods of transformer substation protection pressure plate state - Google Patents
The graph scanning recognition methods of transformer substation protection pressure plate state Download PDFInfo
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- CN109870143A CN109870143A CN201910175474.2A CN201910175474A CN109870143A CN 109870143 A CN109870143 A CN 109870143A CN 201910175474 A CN201910175474 A CN 201910175474A CN 109870143 A CN109870143 A CN 109870143A
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- pressing plate
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Abstract
The invention discloses a kind of graph scanning recognition methods of transformer substation protection pressure plate state, it includes step a, obtain the whole photochrome of all pressing plates in single screen cabinet；Whole photochrome is converted into gray scale picture by step b；Step c identifies " dividing ", " conjunction " state of each pressing plate according to dot matrix recognizer；The graph scanning recognition methods of the pressing plate state can realize the automatic identification and automatic detecting of transformer substation protection pressure plate state through the invention; routing inspection efficiency greatly improves, and recognition accuracy improves, intelligent, automation; without manual identified and inspection, the investment of labour is substantially reduced.
Description
Technical field
The present invention relates to a kind of graph scanning recognition methods of transformer substation protection pressure plate state.
Background technique
The safe operation of relay protection system is the most important safety guarantee of electric system, and phase in relay protection system
The safe operation for closing equipment is even more important.Because of the particularity of the equipment such as protective relaying device, in trip(ping) circuit, it is necessary to design
" pressing plate ", be to ensure that relay protection system safe operation important leverage means.Protection pressing plate is also named protection in flakes, or jumps
Lock pressing plate is the bridge and tie of protective device contact external wiring, and can the function and movement outlet that be related to protection normal
It plays a role.
Protection pressing plate is the cut-off point of a macroscopic, and the tripping electricity of protective relaying device is judged convenient for operations staff
Road, if can coupling cock (breaker) breaking coil, provide great convenience to overhaul, running, but also make substation
Protection system in, increase one cannot completely closed loop cut-off point.Because of the particularity of relay protection trip pressing plate, normal shape
Under state when (no trip signal), two sides cannot be charged simultaneously.And the throwing of pressing plate is moved back by manual operation, leans on the duty of operations staff completely
Ren Xin, actual techniques level are checked on.Therefore in actual operation, because pressing plate throwing is moved back improper, cause protection system cannot correct row
For the phenomenon that happen occasionally.
Currently, the walkaround inspection of transformer substation protection pressure plate is divided into daily periodical inspection inspection and monthly pressing plate is comprehensive
Verification.Periodical inspection checks work, due to the time, walkaround inspection, verification can only be carried out to important pressing plate, is not accomplished pair
The comprehensive careful inspection of pressing plate；Pressing plate is checked to comprehensively careful, can only monthly be arranged once to the comprehensive of pressing plate
Verification checks, but this test mode has very big drawback since pressing plate quantity is more, inspection cycle is long.Traditional is artificial
Regular visit mode is checked pressing plate state and is gradually increased in substation, is no longer satisfied inspection under conditions of O&M task is heavy
It is required that.
Summary of the invention
The present invention provides a kind of graph scanning recognition methods of transformer substation protection pressure plate state, and which overcome background techniques
Described in the deficiencies in the prior art.
The technical solution adopted by the present invention to solve the technical problems is:
The graph scanning recognition methods of transformer substation protection pressure plate state, it is characterised in that: include:
Step a obtains the whole photochrome of all pressing plates in single screen cabinet；
Whole photochrome is converted into gray scale picture by step b；
Step c identifies " dividing ", " conjunction " state of each pressing plate according to dot matrix recognizer；
The dot matrix recognizer includes the following steps:
Step 1 calculate each pixel of gray scale picture gray value, obtain by it is multiple spatially adjacent and have it is close
The pixel collection that the pixel of gray value is constituted, pixel quantity difference are no more than each pixel point set of the first setting ratio
It closes, and the pixel quantity in those pixel collections is greater than residual pixel point set, is the pixel aggregation where pressing plate
Set；Wherein, the size of the difference of the gray value of each pixel in pixel collection can be set, any in the pixel collection
Pixel is at least adjacent with a pixel in the pixel collection, and first setting ratio is less than 50%；
Step 2, space two-dimensional rectangular coordinate system is established in the pixel collection where the pressing plate, and there is X-axis and Y-axis,
The pixel collection hints obliquely at the gray value for each pixel that the minimum X-axis in X-axis is worth in corresponding Y direction in the second setting
There is close gray value, then it is assumed that it is the pressing plate of " conjunction " state that the pixel collection is corresponding, is otherwise " dividing " in ratio
The pressing plate of state；Second setting ratio is greater than 50%.
Among one embodiment: the first setting ratio is small is equal to 30% for this.
Among one embodiment: second setting ratio is equal to greatly 80%.
Among one embodiment: further including step d, " dividing ", " conjunction " of each pressing plate are identified according to fuzzy volume recognizer
State exports correct pressing plate state, otherwise to corresponding pressing plate when the pressing plate state that step c and step d is identified is identical
Issue warning information；
The fuzzy volume recognizer are as follows: the pixel quantity in pixel collection where more each pressing plate, pixel
It is the pressing plate of " dividing " state that the biggish pixel collection of quantity is corresponding, and the lesser pixel collection of pixel quantity is corresponding to be
The pressing plate of " conjunction " state.
Among one embodiment: further including step e, after identifying pressing plate, each state of pressing plate and pressing plate is matched to protection
The matrix model library of pressing plate, to obtain specifically protecting pressing plate status list.
Among one embodiment: further including step f, after identifying pressing plate, each state of pressing plate and pressing plate is matched to protection
The matrix model library of pressing plate, to obtain specifically protecting pressing plate status list.
Among one embodiment: obtaining the method for the whole photochrome of all pressing plates in single screen cabinet in the step a
Are as follows: multiple local pictures under using photographic device successively to shoot in a manner of step-scan before shielding cabinet, multiple local pictures
And then synthesize the global photo of all pressing plates in the screen cabinet.
Among one embodiment: installing the detour track of S type on the transparent glass door of screen cabinet, which is installed in this
The photographic device is driven to advance along the detour track and in equally spaced travel distance on detour track and by stepper motor
Successively take local pictures in place.
The technical program compared with the background art, it has the following advantages:
The graph scanning recognition methods of the pressing plate state can realize transformer substation protection pressure plate state through the invention
Automatic identification and automatic detecting, routing inspection efficiency greatly improve, and recognition accuracy improves, and intelligent, automation is not necessarily to manual identified
And inspection, substantially reduce the investment of labour.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is photochrome acquisition device schematic diagram described in the present embodiment.
Fig. 2 is the gray scale picture that single screen cabinet photochrome described in the present embodiment is converted into.
Fig. 3 is the graph scanning recognition methods flow chart of transformer substation protection pressure plate state described in the present embodiment two.
Specific embodiment
Embodiment one, please refers to Fig. 1 and Fig. 2:
The graph scanning recognition methods of transformer substation protection pressure plate state, it includes:
Step a obtains the whole photochrome of all pressing plates in single screen cabinet；It is obtained in the step in single screen cabinet
The method of the whole photochrome of all pressing plates are as follows: photographic device 10 is used successively to shoot in a manner of step-scan before shielding cabinet
Multiple lower local pictures, multiple local pictures synthesize the global photo of all pressing plates in the screen cabinet in turn.In the present embodiment, ask
Fig. 1 is consulted, the detour track 20 of S type can be installed on the transparent glass door of screen cabinet, which is installed in the detour rail
On road 20 and by stepper motor 30 drive the photographic device 10 along the detour track 20 advance and it is equally spaced advance away from
Local pictures are successively taken from place.
Whole photochrome is converted into gray scale picture by step b；
Step c identifies " dividing ", " conjunction " state of each pressing plate according to dot matrix recognizer；
The dot matrix recognizer includes the following steps:
Step 1 calculate each pixel of gray scale picture gray value, obtain by it is multiple spatially adjacent and have it is close
The pixel collection that the pixel of gray value is constituted, pixel quantity difference are no more than each pixel point set of the first setting ratio
It closes, and the pixel quantity in those pixel collections is greater than residual pixel point set, is the pixel aggregation where pressing plate
Set；Wherein, the size of the difference of the gray value of each pixel in pixel collection can be set, any in the pixel collection
Pixel is at least adjacent with a pixel in the pixel collection, and first setting ratio is less than 50%；That is, the step is
Pressing plate figure is found out from gray scale picture.
In the present embodiment, as shown in Fig. 2, pressing plate presented in gray scale picture be more black color pixel accumulation regions
(i.e. pixel collection), these pixel accumulation regions are to form (pixel accumulation regions where pressing plate by adjacent pixel aggregation
One feature), and each pixel gray value in the pixel accumulation regions where pressing plate is not much different that (pixel where pressing plate is poly-
Ji Qu's secondly feature), therefore, the difference of gray value appropriate can be set as needed to define whether the pixel belongs to pressure
Pixel accumulation regions where plate；Simultaneously as the size of pressing plate is uniform in the same switchboard cabinet, therefore each pressure defined
The pixel number that pixel accumulation regions where plate are included also be not much different (pixel accumulation regions where pressing plate thirdly special
Sign), furthermore, since a pressing plate is shielding the area occupied in cabinet greatly compared with other objects (label etc.) in screen cabinet, pressing plate
The pixel quantity of place pixel accumulation regions is most, greater than the pixel number of other pixel accumulation regions with close gray value
Amount (its four feature of pixel accumulation regions where pressing plate).
Step 2, space two-dimensional rectangular coordinate system is established in the pixel collection where the pressing plate, and there is X-axis and Y-axis,
The pixel collection hints obliquely at the gray value for each pixel that the minimum X-axis in X-axis is worth in corresponding Y direction in the second setting
There is close gray value, then it is assumed that it is the pressing plate of " conjunction " state that the pixel collection is corresponding, is otherwise " dividing " in ratio
The pressing plate of state；Second setting ratio is greater than 50%.In the present embodiment, as shown in Fig. 2, when pressing plate is in " conjunction " state,
Pixel collection where pressing plate is close to rectangular-shaped, then as shown in Fig. 2, X-axis and Y-axis are established in the pixel collection
Coordinate system, as X=0, all pixels point in corresponding Y direction is nearly all to connect pullous pixel, is had close
Gray value；When pressing plate is in " dividing " state, the pixel collection where pressing plate is in the figure intersected, then in the pixel point set
The coordinate system for establishing X-axis and Y-axis is closed, as X=0, all pixels point part in corresponding Y direction is partially white, part
Inclined black；Therefore the state of pressing plate can be distinguished using features described above.
Preferably, this first setting ratio is small is equal to 30%.Second setting ratio is equal to greatly 80%.
Each state of pressing plate and pressing plate after identifying pressing plate, is matched to the matrix model library of protection pressing plate by step e, from
And obtain specifically protecting pressing plate status list, it calls directly and checks convenient for background terminal.
Embodiment two please refers to Fig. 1 to Fig. 3:
In order to improve the accuracy rate of state recognition, after the step c of embodiment one, including step d, according to fuzzy volume
Recognizer identifies " the dividing " of each pressing plate, " conjunction " state, when the pressing plate state that step c and step d is identified is identical, output
Correct pressing plate state, otherwise issues warning information to corresponding pressing plate；
The fuzzy volume recognizer are as follows: the pixel quantity in pixel collection where more each pressing plate, pixel
It is the pressing plate of " dividing " state that the biggish pixel collection of quantity is corresponding, and the lesser pixel collection of pixel quantity is corresponding to be
The pressing plate of " conjunction " state.As shown in Fig. 2, when pressing plate is in conjunction state, the pixel quantity of the pixel collection where pressing plate compared with
Few, when pressing plate is in isloation state, the pixel quantity of the pixel collection where pressing plate is more.
Further include step f, after identifying pressing plate, each state of pressing plate and pressing plate is matched to the matrix model of protection pressing plate
Library calls directly convenient for background terminal and checks to obtain specifically protecting pressing plate status list.
The above is only the preferred embodiment of the present invention, the range implemented of the present invention that therefore, it cannot be limited according to, i.e., according to
Equivalent changes and modifications made by the invention patent range and description, should still be within the scope of the present invention.
Claims (8)
1. the graph scanning recognition methods of transformer substation protection pressure plate state, it is characterised in that: include:
Step a obtains the whole photochrome of all pressing plates in single screen cabinet；
Whole photochrome is converted into gray scale picture by step b；
Step c identifies " dividing ", " conjunction " state of each pressing plate according to dot matrix recognizer；
The dot matrix recognizer includes the following steps:
Step 1 calculate each pixel of gray scale picture gray value, obtain by it is multiple spatially adjacent and have close gray scale
The pixel collection that the pixel of value is constituted, pixel quantity difference are no more than each pixel collection of the first setting ratio, and
Pixel quantity in those pixel collections is greater than residual pixel point set, is that the pixel where pressing plate assembles set；
Wherein, the size of the difference of the gray value of each pixel in pixel collection can be set, any pixel in the pixel collection
Point is at least adjacent with a pixel in the pixel collection, and first setting ratio is less than 50%；
Step 2, space two-dimensional rectangular coordinate system is established in the pixel collection where the pressing plate, and there is X-axis and Y-axis, the picture
Vegetarian refreshments set hints obliquely at the gray value for each pixel that the minimum X-axis in X-axis is worth in corresponding Y direction in the second setting ratio
On there is close gray value, then it is assumed that it is the pressing plate of " conjunction " state that the pixel collection is corresponding, is otherwise " dividing " state
Pressing plate；Second setting ratio is greater than 50%.
2. the graph scanning recognition methods of transformer substation protection pressure plate state according to claim 1, it is characterised in that: this
One setting ratio is small to be equal to 30%.
3. the graph scanning recognition methods of transformer substation protection pressure plate state according to claim 1, it is characterised in that: this
Two setting ratios are equal to greatly 80%.
4. the graph scanning recognition methods of transformer substation protection pressure plate state according to claim 1, it is characterised in that: also wrap
Step d is included, " dividing ", " conjunction " state of each pressing plate are identified according to fuzzy volume recognizer, when step c and step d are identified
Pressing plate state it is identical when, export correct pressing plate state, otherwise to corresponding pressing plate issue warning information；
The fuzzy volume recognizer are as follows: the pixel quantity in pixel collection where more each pressing plate, pixel quantity
It is the pressing plate of " dividing " state that biggish pixel collection is corresponding, and the corresponding lesser pixel collection of pixel quantity is " conjunction "
The pressing plate of state.
5. the graph scanning recognition methods of transformer substation protection pressure plate state according to claim 1, it is characterised in that: also wrap
Step e is included, after identifying pressing plate, each state of pressing plate and pressing plate is matched to the matrix model library of protection pressing plate, to obtain
Specific protection pressing plate status list.
6. the graph scanning recognition methods of transformer substation protection pressure plate state according to claim 4, it is characterised in that: also wrap
Step f is included, after identifying pressing plate, each state of pressing plate and pressing plate is matched to the matrix model library of protection pressing plate, to obtain
Specific protection pressing plate status list.
7. the graph scanning recognition methods of transformer substation protection pressure plate state according to claim 1, it is characterised in that: described
The method of the whole photochrome of all pressing plates in single screen cabinet is obtained in step a are as follows: use photographic device before shielding cabinet with
The mode of step-scan successively shoots multiple lower local pictures, which synthesizes all pressing plates in the screen cabinet in turn
Global photo.
8. the graph scanning recognition methods of transformer substation protection pressure plate state according to claim 7, it is characterised in that: shielding
The detour track of S type is installed on the transparent glass door of cabinet, which is installed on the detour track and passes through stepper motor
It drives the photographic device to advance along the detour track and successively takes local pictures at equally spaced travel distance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910175474.2A CN109870143A (en) | 2019-03-08 | 2019-03-08 | The graph scanning recognition methods of transformer substation protection pressure plate state |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910175474.2A CN109870143A (en) | 2019-03-08 | 2019-03-08 | The graph scanning recognition methods of transformer substation protection pressure plate state |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110827333A (en) * | 2019-10-31 | 2020-02-21 | 国网河北省电力有限公司电力科学研究院 | Relay protection pressing plate splicing identification method, system and medium |
| CN111683188A (en) * | 2020-06-12 | 2020-09-18 | 湖南省骏北科技有限公司 | Operating equipment platform for collecting and analyzing homework of primary and secondary school students by using smart pen |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107274382A (en) * | 2017-05-03 | 2017-10-20 | 国网湖北省电力公司 | A kind of state identification method, device and the electronic equipment of hard pressing plate |
-
2019
- 2019-03-08 CN CN201910175474.2A patent/CN109870143A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107274382A (en) * | 2017-05-03 | 2017-10-20 | 国网湖北省电力公司 | A kind of state identification method, device and the electronic equipment of hard pressing plate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110827333A (en) * | 2019-10-31 | 2020-02-21 | 国网河北省电力有限公司电力科学研究院 | Relay protection pressing plate splicing identification method, system and medium |
| CN110827333B (en) * | 2019-10-31 | 2022-05-03 | 国网河北省电力有限公司电力科学研究院 | Relay protection pressing plate splicing identification method, system and medium |
| CN111683188A (en) * | 2020-06-12 | 2020-09-18 | 湖南省骏北科技有限公司 | Operating equipment platform for collecting and analyzing homework of primary and secondary school students by using smart pen |
| CN111683188B (en) * | 2020-06-12 | 2022-07-05 | 湖南省骏北科技有限公司 | Operating equipment platform for collecting and analyzing homework of primary and secondary school students by using smart pen |
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Application publication date: 20190611 |