CN113866620A - Disconnecting link state detection device and method based on wireless photoelectric sensing - Google Patents
Disconnecting link state detection device and method based on wireless photoelectric sensing Download PDFInfo
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Abstract
The invention discloses a disconnecting link state detection device and a method based on wireless photoelectric sensing, belonging to the technical field of disconnecting link state detection, the device comprises a main control module, a photoelectric sensor transmitting module and a photoelectric sensor receiving module, wherein the main control module comprises a computer terminal and a wireless communication receiving terminal, the photoelectric sensor transmitting module comprises a laser transmitting terminal and a solar power supply assembly, the photoelectric sensor receiving module comprises a laser receiving terminal, a solar power supply assembly, a wireless communication transmitting terminal and a main control chip, the wireless photoelectric sensor technology is added into a comprehensive automation system of a transformer substation and is combined with the sequence control of the transformer substation to realize the direct information acquisition of the disconnecting link state position, thereby autonomously judging the current operating state of the disconnecting link, automatically alarming when equipment failure is found or the disconnecting link is not matched with an expected state, saving a manual on-site confirmation link, the efficiency of sequence control operation of the transformer substation can be effectively improved.
Description
Technical Field
The invention relates to the technical field of disconnecting link state detection, in particular to a disconnecting link state detection device and method based on wireless photoelectric sensing.
Background
With the intelligent development of the transformer substation, the number of transformer substations in use is increased year by year, so that the workload of operation and maintenance personnel is greatly increased, and the complexity of equipment operation in the transformer substation is increased day by day, so that a series of challenges are faced to switching operation. In the actual operation of the transformer substation, when the transformer substation performs one-key sequential control switching operation, the operation cannot be performed frequently because the on-off state identification of the disconnecting link cannot meet the requirement, and then manual forced intervention is required to realize one-key sequential control, so that the fact that the real-time state of the disconnecting link is accurately and effectively acquired is very important.
In actual use, a transformer substation needs to detect the opening and closing state of the disconnecting link in real time, the state of the disconnecting link is confirmed only through opening/closing double-position auxiliary contact signals and image identification of the disconnecting link at present, and the reliable perception of the state and the position of the disconnecting link cannot be achieved generally. .
Based on this, the invention designs a device and a method for detecting the state of a disconnecting link based on wireless photoelectric sensing, so as to solve the problems.
Disclosure of Invention
The invention aims to provide a disconnecting link state detection device and method based on wireless photoelectric sensing to solve the technical problems.
In order to realize the purpose, the invention provides the following technical scheme: the utility model provides a switch state detection device based on wireless photoelectric sensing, includes host system, photoelectric sensor transmitting module and photoelectric sensor receiving module, host system includes computer terminal and wireless communication receiving terminal, photoelectric sensor transmitting module includes laser emission end and solar energy power supply subassembly, photoelectric sensor receiving module includes laser receiving terminal, solar energy power supply subassembly, wireless communication sending end and main control chip, laser emission end and laser receiving terminal set up respectively in the both ends of switch arm and are used for detecting and acquire switch state signal, main control chip sends switch state data for the wireless communication receiving terminal through the wireless communication sending end, and then transmits extremely computer terminal.
Preferably, the photoelectric sensor transmitting module and the photoelectric sensor receiving module both comprise a shell assembly, the shell assembly comprises a stainless steel square shell and a photoelectric sensor support, and the laser transmitting end and the laser receiving end are fixedly mounted on the shell assembly through the photoelectric sensor support respectively.
Preferably, all offer the laser that is used for the laser to pass through on the square casing of stainless steel and let a mouthful, be used for the installation the mounting hole of photoelectric sensor support and be used for radiating louvre, wherein the laser that is used for on the square casing of stainless steel of photoelectric sensor receiving module lets a mouthful and mounting hole along vertically widening so that the mounted position of adjustment laser receiving end from top to bottom.
Preferably, the top of the stainless steel square shell adopts a toughened glass plate as the top surface, and the surfaces of all electronic devices in the stainless steel square shell are wrapped with a layer of polyester film.
Preferably, the solar power supply assembly comprises a solar electric plate, a solar controller and a lithium battery pack, and the solar electric plate converts light energy into electric energy through the solar controller and then stores the electric energy in the lithium battery pack.
Preferably, the wireless communication receiving end and the wireless communication sending end adopt LORA as a communication medium, use an SX1278 chip and adopt a spread spectrum technology to carry out wireless communication, and the main control chip is an STM32 singlechip.
Preferably, the computer terminal comprises a processor, a communication interface, a communication bus, a memory and a visual interface, wherein the communication interface is connected with the wireless communication receiving end and used for transmitting the state data of the target disconnecting link, the state data is preprocessed and analyzed by the processor according to multiple criteria, and finally the real-time state of the target disconnecting link is displayed through the visual interface.
A method for detecting the state of a disconnecting link based on wireless photoelectric sensing comprises the following steps:
step S100: acquiring target disconnecting link state data, wherein the target disconnecting link state data comprise state signals received by a photoelectric sensor and auxiliary contact signals;
step S200: transmitting the acquired state data of the target disconnecting link to a master control station through wireless communication;
step S300: the master control station preprocesses the state data;
step S400: carrying out multi-criterion analysis operation on the preprocessed state data;
step S500: and displaying the state of the knife switch after the analysis processing on an interface at the terminal.
Preferably, in step S300, the master control station performs preprocessing, including cyclic redundancy check, through an upper computer of the computer terminal, so as to ensure integrity and correctness of the data.
Preferably, in step S400, the photoelectric sensing signal and the auxiliary contact signal received by the master station are both status data, so an entropy weight method is used for analysis; determining objective weight according to the index variability, wherein if the entropy weight method of the information entropy index weight determination method of a certain index is smaller, the larger the variation degree of the index value is, the more information is provided, the larger the function can be played in the comprehensive evaluation is, and the larger the weight is; conversely, the smaller the weight; performing weight assignment w on each state data by using the entropy weight methodiAnd (i is 1, 2, …, n), and after the analysis and voting, the maximum weight is the target knife switch state after the multi-criterion analysis.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a mechanism for confirming the state positions of the disconnecting link in the opening and closing states by a wireless photoelectric sensing technology, and provides a safety guarantee multi-confirmation mechanism for one-key sequential control operation of the state conversion of the isolation disconnecting link of the transformer substation. The wireless photoelectric sensor technology is added into a transformer substation integrated automation system and is combined with the sequence control of a transformer substation to realize direct information acquisition of the state position of the disconnecting link, so that the current operation state of the disconnecting link is judged autonomously, the disconnecting link can be used for detecting the state of the disconnecting link, energy can be supplied autonomously and achieve a communication effect, the automatic detection of the state of the disconnecting link by a device is realized, if an equipment fault is found or the current operation state is not matched with an expected state, an automatic alarm is given, a manual on-site confirmation link is omitted, the error rate of detecting the state of the disconnecting link can be effectively reduced, the working reliability of the disconnecting link is ensured, and the sequential control operation efficiency of the transformer substation is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a device for detecting the status of a disconnecting link based on wireless photoelectric sensing according to the present invention;
FIG. 2 is a schematic view of a solar power supply assembly of the device for detecting the status of a disconnecting link based on wireless photoelectric sensing according to the present invention;
FIG. 3 is a schematic view of a housing assembly for a photosensor emitter module of the present invention;
FIG. 4 is a schematic view of a housing assembly for a photosensor receiving module of the present invention;
FIG. 5 is a schematic view of a photoelectric sensor holder of the device for detecting status of disconnecting link based on wireless photoelectric sensing according to the present invention;
fig. 6 is a flowchart of a method for detecting a state of a knife switch based on wireless photoelectric sensing according to an embodiment of the present application.
In the drawings, the components represented by the respective reference numerals are listed below:
100-a main control module, 110-a computer terminal and 120-a wireless communication receiving end;
200-a photoelectric sensor transmitting module, 210-a laser transmitting end, 220-a solar power supply assembly;
300-a photoelectric sensor receiving module, 310-a laser receiving end, 320-a solar power supply assembly, 330-a wireless communication transmitting end, 340-a main control chip;
231-solar panel, 232-solar controller, 233-lithium battery pack;
400-shell component, 410-stainless steel square shell, 420-photoelectric sensor bracket, 430-toughened glass plate, 440-6020 mylar, 450-laser relief port, 460-mounting hole, 470-heat dissipation hole, 480-mounting bracket and shell fixing hole site, 490-laser sensor and mounting bracket fixing hole site.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2-6, the present invention provides a technical solution: a switch state detection device based on wireless photoelectric sensing comprises a main control module 100, a photoelectric sensor transmitting module 200 and a photoelectric sensor receiving module 300, wherein the main control module 100 comprises a computer terminal 110 and a wireless communication receiving terminal 120, the photoelectric sensor transmitting module 200 comprises a laser transmitting terminal 210 and a solar power supply component 220, the photoelectric sensor receiving module 300 comprises a laser receiving terminal 310, a solar power supply component 320, a wireless communication transmitting terminal 330 and a main control chip 340, the laser transmitting terminal 210 and the laser receiving terminal 310 are respectively arranged at two ends of a switch arm and used for detecting and acquiring a switch state signal, and the main control chip 340 transmits switch state data to the wireless communication receiving terminal 120 through the wireless communication transmitting terminal 330 and then transmits the switch state data to the computer terminal 110;
specifically, the laser emitting end 210 and the laser receiving end 310 employ a correlation type photoelectric sensor, and laser is used as a light source due to the characteristics of high precision, high directivity, high brightness, and the like of laser. The laser transmitting end 210 emits a light beam by using an optical element, the laser receiving end 310 receives the light signal and converts the light signal into an electric signal, then the effective signal is filtered by a detection circuit, and finally the signal is transmitted to a main control station through wireless communication; wherein the laser receiving end 310 requires a threshold of 10mm to meet the deflection of the target knife gate when closed in line.
Specifically, the solar power supply assemblies 220 and 320 are used for realizing intelligent power supply of the photoelectric sensing detection device and providing continuous and stable energy supply support for the detection device; the embodiment of the application adopts solar energy lithium cell modular power module to supply power for the device, and this module includes solar energy electroplax 231, solar controller 232 and lithium cell group 233, and solar energy electroplax 231 saves in lithium cell group 233 after converting light energy into the electric energy through solar controller 232, realizes that the double cell among the energy storage module switches and the energy consumption is independently managed, lets the device continuously stable work.
Specifically, the wireless communication receiving end 120 and the wireless communication transmitting end 330 use LORA as communication media, use SX1278 chips, and use spread spectrum technology for wireless communication, which has the advantages of low power consumption, long transmission distance, strong anti-interference capability, and the like; meanwhile, a low-power STM32 single chip microcomputer is needed as the main control chip 340, and the laser receiving end 310 mainly functions to send state data generated by the photoelectric sensor assembly to the main control chip 340 and transmit the state data to the main control module 100 through the wireless communication sending end 330.
Specifically, the computer terminal 110 includes a processor, a communication interface, a communication bus, a memory, and a visual interface, where the communication interface is connected to the wireless communication receiving terminal 120 for transmitting the target switch status data, and the processor is used to perform preprocessing and multi-criterion analysis on the status data, and finally present the real-time target switch status through the visual interface.
Specifically, each of the photosensor emitting module 200 and the photosensor receiving module 300 includes a housing assembly 400, the housing assembly 400 includes a stainless steel square housing 410 and a photosensor bracket 420, the photosensor bracket 420 is fixedly mounted in the stainless steel square housing 410, the laser emitting end 210 and the laser receiving end 310 are respectively and fixedly mounted on the housing assembly 400 through the photosensor bracket 420, and the photosensor bracket 420 is correspondingly provided with a mounting bracket and housing fixing hole 480 and a laser sensor and mounting bracket fixing hole 490;
the stainless steel square shell 410 is provided with a laser let-position port 450 for laser to pass through, a mounting hole 460 for mounting the photoelectric sensor support 420 and heat dissipation holes 470 for heat dissipation, the laser let-position port 450 is used for laser to pass through, the mounting hole 460 is used for mounting the photoelectric sensor support 420, and the heat dissipation holes 470 are arranged on two sides of the stainless steel square shell 410 to improve the heat dissipation performance of the device, wherein the laser let-position port 450 and the mounting hole 460 on the stainless steel square shell 410 for the photoelectric sensor receiving module 300 are longitudinally widened so as to adjust the mounting position of the laser receiving end 310 up and down, so that the laser receiving end 310 corresponds to the laser emitting end 210 in position correction;
the top of the stainless steel square shell 410 adopts a toughened glass plate 430 as a top surface for sunlight transmission, so that the solar panel 231 works normally, the shell assembly 400 aims to reduce the interference of high-voltage strong electromagnetism of the transformer substation on the detection device, and the surface of each electronic device in the stainless steel square shell 410 is wrapped with a layer of 6020 polyester film 440, so that the influence of high voltage on each assembly is further reduced.
As shown in fig. 1, a method for detecting a state of a disconnecting link based on wireless photoelectric sensing comprises the following steps:
step S100: acquiring target disconnecting link state data, wherein the target disconnecting link state data comprise state signals received by a photoelectric sensor and auxiliary contact signals;
in an embodiment, when an opening and closing instruction corresponding to a target disconnecting link is detected, the photoelectric sensing assembly starts to work, namely, the photoelectric sensor performs laser correlation operation, and whether the state of the disconnecting link is abnormal or not is further judged.
The correlation operation is that the laser emitting end 210 emits laser and the laser receiving end 310 receives the laser; if the target disconnecting link is in a closed state, laser correlation is conducted to judge whether the disconnecting link arm is in a horizontal state or not under a certain threshold degree, and the laser receiving end 310 needs the threshold degree of 10mm to meet the deviation of the target disconnecting link when the target disconnecting link is closed to be in a straight line; when the receiving end of the laser sensor receives a laser signal, the receiving end generates a high-level signal; otherwise, the receiving end generates a low level signal.
In addition, when the opening and closing command corresponding to the target knife switch is detected, the auxiliary contact of the knife switch can generate state data at the same time.
Step S200: transmitting the acquired state data of the target disconnecting link to a master control station through wireless communication;
in an implementation, the level signal generated by the laser sensor detecting the target switch may filter out valid status data through the detection circuit of the laser receiving terminal 310, and transmit the status data of the detected target switch to the computer terminal 110 of the main control module 100 through the wireless communication receiving terminal 120 and the wireless communication transmitting terminal 330.
Step S300: the master control station preprocesses the state data;
in implementation, in consideration of the fact that data acquired by the photoelectric sensor may be influenced by high-voltage electromagnetism in the wireless communication transmission process, the master control station performs preprocessing including CRC (cyclic redundancy check) through debugging software of the terminal, so that the integrity and the correctness of the data are guaranteed.
Step S400: carrying out multi-criterion analysis operation on the preprocessed state data;
in the implementation, the preprocessed disconnecting link state data and the auxiliary contact state data need to be subjected to multi-criterion analysis operation; in the embodiment of the present application, the photoelectric sensing signal and the auxiliary contact signal received by the main control module 100 are both status data, so an entropy weight method is used for analysis; determining objective weight according to the index variability, wherein if the entropy weight method of the information entropy index weight determination method of a certain index is smaller, the larger the variation degree of the index value is, the more information is provided, the larger the function can be played in the comprehensive evaluation is, and the larger the weight is; conversely, the smaller the weight. Weighting each state data by entropy weight method wiAnd (i is 1, 2, …, n), and after the analysis and voting, the maximum weight is the target knife switch state after the multi-criterion analysis.
Step S500: displaying the fused disconnecting link state on an interface at a terminal;
after the multi-criterion analysis, the computer terminal 110 informs the staff of the state of the target disconnecting link in an interface display mode; meanwhile, if the state of the target disconnecting link is abnormal, alarm information is generated, and the staff is reminded that the target disconnecting link is not in the preset opening and closing state.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings, and is for convenience of description and simplicity of description only, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be construed as limiting the invention.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the terms in the invention is understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a switch state detection device based on wireless photoelectric sensing which characterized in that: comprises a main control module (100), a photoelectric sensor transmitting module (200) and a photoelectric sensor receiving module (300), the main control module (100) comprises a computer terminal (110) and a wireless communication receiving end (120), the photoelectric sensor emitting module (200) comprises a laser emitting end (210) and a solar power supply component (220), the photoelectric sensor receiving module (300) comprises a laser receiving end (310), a solar power supply assembly (320), a wireless communication transmitting end (330) and a main control chip (340), the laser emitting end (210) and the laser receiving end (310) are respectively arranged at two ends of the disconnecting link arm and used for detecting and acquiring disconnecting link state signals, the master control chip (340) sends the disconnecting link state data to the wireless communication receiving end (120) through the wireless communication sending end (330), and then transmits the disconnecting link state data to the computer terminal (110).
2. The switch state detection device based on wireless photoelectric sensing of claim 1, characterized in that: photoelectric sensor emission module (200) and photoelectric sensor receiving module (300) are all including shell subassembly (400) respectively, shell subassembly (400) include stainless steel square casing (410) and photoelectric sensor support (420), laser emission end (210) and laser receiving end (310) all pass through photoelectric sensor support (420) fixed mounting in on the shell subassembly (400).
3. The switch state detection device based on wireless photoelectric sensing of claim 2, characterized in that: all offer on stainless steel square casing (410) and be used for the laser that the laser passes through let a mouthful (450), be used for the installation photoelectric sensor support (420) mounting hole (460) and be used for radiating louvre (470), wherein be used for the laser on stainless steel square casing (410) of photoelectric sensor receiving module (300) to let a mouthful (450) and mounting hole (460) along vertically widening so that adjust the mounted position of laser receiving end (310) from top to bottom.
4. The switch state detection device based on wireless photoelectric sensing of claim 2, characterized in that: the top of the stainless steel square shell (410) adopts a toughened glass plate (430) as the top surface, and the surfaces of all electronic devices in the stainless steel square shell (410) are wrapped with a layer of 6020 polyester film (440).
5. The device and the method for detecting the state of the disconnecting link based on the wireless photoelectric sensing according to claim 1 are characterized in that: the solar power supply assemblies (220, 320) respectively comprise a solar electric plate (231), a solar controller (232) and a lithium battery pack (233), wherein the solar electric plate (231) converts light energy into electric energy through the solar controller (232) and then stores the electric energy in the lithium battery pack (233).
6. The switch state detection device based on wireless photoelectric sensing of claim 1, characterized in that: the wireless communication receiving end (120) and the wireless communication sending end (330) adopt LORA as a communication medium, SX1278 chips and a spread spectrum technology to carry out wireless communication, and the main control chip (340) is an STM32 single chip microcomputer.
7. The switch state detection device based on wireless photoelectric sensing of claim 1, characterized in that: the computer terminal (110) comprises a processor, a communication interface, a communication bus, a memory and a visual interface, wherein the communication interface is connected with the wireless communication receiving end (120) and used for transmitting target disconnecting link state data, the state data is subjected to preprocessing and multi-criterion analysis by the processor, and finally the real-time target disconnecting link state is presented through the visual interface.
8. A method for detecting the state of a disconnecting link based on wireless photoelectric sensing is characterized by comprising the following steps:
step S100: acquiring target disconnecting link state data, wherein the target disconnecting link state data comprise state signals received by a photoelectric sensor and auxiliary contact signals;
step S200: transmitting the acquired state data of the target disconnecting link to a master control station through wireless communication;
step S300: the master control station preprocesses the state data;
step S400: carrying out multi-criterion analysis operation on the preprocessed state data;
step S500: and displaying the state of the knife switch after the analysis processing on an interface at the terminal.
9. The method for detecting the state of the disconnecting link based on the wireless photoelectric sensing is characterized in that in the step S300, the master control station performs preprocessing including cyclic redundancy check through debugging software of a computer terminal, so as to ensure the integrity and the correctness of data.
10. The method according to claim 9, wherein in step S400, the optoelectronic sensing signal received by the master station and the auxiliary node signal are both status data, and therefore an entropy weight method is used for analysis. Determining objective weight according to the index variability, and indicating the index value if the entropy weight method of the information entropy index weight determination method of a certain index is smallerThe larger the variation degree is, the more the provided information amount is, the larger the effect can be played in the comprehensive evaluation is, and the larger the weight is; conversely, the smaller the weight; performing weight assignment w on each state data by using the entropy weight methodiAnd (i is 1, 2, …, n), and after the analysis and voting, the maximum weight is the target knife switch state after the multi-criterion analysis.
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| CN118280753A (en) * | 2024-05-30 | 2024-07-02 | 广东电网有限责任公司佛山供电局 | System and method for confirming knife switch position, storage medium and processor |
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