CN110703074A - High-voltage circuit breaker comprehensive detection system and method based on ubiquitous power Internet of things - Google Patents
High-voltage circuit breaker comprehensive detection system and method based on ubiquitous power Internet of things Download PDFInfo
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- CN110703074A CN110703074A CN201910827816.4A CN201910827816A CN110703074A CN 110703074 A CN110703074 A CN 110703074A CN 201910827816 A CN201910827816 A CN 201910827816A CN 110703074 A CN110703074 A CN 110703074A
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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
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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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- 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
- 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
- G01R31/3275—Fault detection or status indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Abstract
The invention discloses a comprehensive detection system and method for a high-voltage circuit breaker based on the ubiquitous power Internet of things, and the comprehensive detection system comprises a server and a local end, wherein the local end comprises: a vibration detector detecting mechanical vibration of the circuit breaker; a magnetic field generator that generates a varying magnetic field; the detection device is connected with the secondary plug-in of the circuit breaker and detects a secondary loop; the control unit is connected with the vibration detector, the magnetic field generator and the detection device and uploads local data to the server; and the server calculates various parameters of the circuit breaker according to the obtained data. The method comprises the following steps: the detection device is connected with a secondary plug-in unit of the high-voltage circuit breaker, and is used for arranging and starting the vibration detector and the magnetic field generator; and controlling the high-voltage circuit breaker to perform switching-on and switching-off operation, detecting the vibration and the state of the secondary circuit and uploading. The invention has simple structure, long service life and simple and convenient detection mode, is not easy to damage, can generate a magnetic field to change the detection environment, has high reliability of the detection result, and reduces the processing difficulty of local information by utilizing the ubiquitous power Internet of things.
Description
Technical Field
The invention relates to the field of performance detection of high-voltage circuit breakers, in particular to a comprehensive detection system and method for a high-voltage circuit breaker based on a ubiquitous power Internet of things.
Background
Circuit breakers are important devices in high voltage networks, mainly functioning as control and protection devices. With the increase of the service time, certain parts of the circuit breaker can be continuously aged or damaged, such as the abrasion of a mechanical mechanism, the abrasion of a contact, the failure of a secondary opening and closing mechanism and the like. These problems can cause the circuit breaker to malfunction and even affect the safe operation of the entire grid. Therefore, it is important to periodically check the performance of the circuit breaker and detect the operating state thereof. But there are more problems in present high voltage circuit breaker detection mode.
The utility model provides a vacuum circuit breaker mechanical properties on-line monitoring system, including microprocessor, circuit breaker divide-shut brake position detecting element and circuit breaker mechanical properties detecting element, circuit breaker divide-shut brake position detecting element detects divide-shut brake switching signal and transmits to microprocessor, circuit breaker mechanical properties detecting element detects circuit breaker actuating signal and transmits to microprocessor.
The invention as authorizing the invention of the notice number CN103760489B discloses a high-voltage circuit breaker intellectual detection system, it includes a CPU module connecting with specialized aviation plug through the sampling transformation module, the said specialized aviation plug links together with circuit breaker secondary plug-in, its one end includes two routes are through a resistance measuring module, circuit and a circuit of direct connection with power output module of the circuit loop of power transformation module and power output module connection of the circuit loop of power transformation module, and test the circuit breaker secondary loop resistance by the resistance measuring module, the alternating current 220V voltage of the power output module is transformed into two kinds of direct current power supply output of 220V and 110V and is regarded as the branch of the circuit breaker, closing the direct current power supply; the CPU module controls the power output of the power output module to the switch-off and switch-on of the circuit breaker through the power conversion module through the special aviation plug and detects and controls the current of the energy storage motor through the sampling conversion module so as to test the energy storage time of the motor, and simultaneously calculates the secondary loop resistance of the circuit breaker tested by the resistance measurement module through the special aviation plug.
The prior art has incomplete detection and takes little attention to the influence of the detection environment, so that the reliability and the accuracy are poor.
Disclosure of Invention
The invention provides a comprehensive detection system and a method for a high-voltage circuit breaker based on a ubiquitous power Internet of things, aiming at the problems that the detection is not comprehensive enough and the influence on the detection environment is not paid attention to, so that the reliability and the accuracy are poor in the prior art.
The technical scheme of the invention is as follows.
The utility model provides a high voltage circuit breaker integrated detection system based on ubiquitous electric power thing networking, includes server and local end, and local end includes: a vibration detector detecting mechanical vibration of the circuit breaker; a magnetic field generator that generates a varying magnetic field; the detection device is connected with the secondary plug-in of the circuit breaker and detects a secondary loop; the control unit is connected with the vibration detector, the magnetic field generator and the detection device and uploads local data to the server; and the server calculates various parameters of the circuit breaker according to the obtained data. The high-voltage circuit breaker can be influenced by a certain magnetic field in a working state, so that the mechanical vibration and the secondary circuit are detected in a simulated magnetic field environment, the working environment is closer, and the reliability and the accuracy of detection are improved. Communication between server and the local makes full use of the construction achievement of ubiquitous electric power thing networking, reduces the local calculation and handles the degree of difficulty.
Preferably, the vibration detector includes: the light path unit is used for emitting emergent light which is interfered with each other to a target position; the image acquisition unit is used for shooting an image of a target position and is connected with the control unit; the measuring frame bears the light path unit and the image acquisition unit and enables the light path unit and the emergent angle or incident angle of the image acquisition unit to form a certain angle; the fixed frame is connected with the measuring frame through a rotating shaft. After the emergent light is emitted to a target position by the light path unit, the image acquisition unit continuously acquires images, strong vibration can be generated during switching on and switching off, the distance from an imaging plane to an emergent point can influence the width of interference fringes, so the vibration can cause the change of the images, mechanical parameters such as vibration frequency and amplitude of the circuit breaker can be obtained by processing the images, and in addition, the vibration detector is not in direct contact with the circuit breaker, the measurement process is simple and convenient, the error is small, and the equipment is not easy to damage.
Preferably, the image acquisition unit comprises two acquisition ends, and the two acquisition ends are located at two sides of the optical path unit. Aiming at a plane to be measured, the vibration measuring effect of the plane perpendicular to the plane is obvious, and the vibration parallel to the plane cannot be effectively detected, so that a certain angle is formed between the light path unit and the emergent or incident angle of the image acquisition unit, light emitted by the light path unit needs to relate to at least two planes simultaneously during use, and the image acquisition unit at the corresponding angle acquires images independently, so that the vibration in multiple directions is obtained, the measuring process is perfected, and the accuracy is improved. The acquisition end preferably uses a high-speed camera. High speed cameras are an ideal choice because of the speed and clarity requirements of acquisition.
Preferably, the optical path unit includes: a light source generating an initial light; a lens to increase an initial light coverage area; the double slit plate makes the initial light pass through two slits and then become two beams of emergent light which are mutually interfered. The light source generally selects a laser, and images on the plane of the surface of the circuit breaker by using the interference principle so as to be used as a reference for image processing.
Preferably, the measuring rack is L-shaped, and the exit angle of the optical path unit and the incident angle of the collecting end form an angle of 45 degrees. Because the most common three-dimensional coordinates are perpendicular to each other, the design enables the two acquisition ends to form an angle of 90 degrees, and the vibration of two perpendicular planes can be measured at each time, and the vibration in each direction in the three-dimensional coordinates can be covered through at least two times of measurement.
Preferably, the fixing frame is a vertical support or a barrel-shaped hoop, one side of the barrel-shaped hoop is connected with the measuring frame through a rotating shaft, and the other side of the barrel-shaped hoop is used for adjusting the tightness of the barrel-shaped hoop through screws. The vertical support is used for being placed on the ground during ground operation, and the bucket-shaped hoop is used for being used during measurement near a telegraph pole and the like.
Preferably, the bucket-shaped hoop consists of a plurality of movable joints, and each movable joint is connected with each other in the vertical direction.
Preferably, the magnetic field generator comprises: an apparatus main body that carries a built-in device; a drum disposed in the apparatus main body and rotated by a rotation shaft; the magnetic field module is arranged in the roller and generates a controllable magnetic field; and the driving mechanism is arranged in the equipment main body, is connected with the rotating shaft and is controlled by the control unit to rotate. Magnetic field intensity accessible changes modes such as electric current and controls, but the magnetic field direction if still control through changing the electric current direction, can lead to only having positive and negative two optional directions, has consequently increased the cylinder structure for the magnetic field module can be along with the cylinder rotation, with change magnetic field direction, has increased the selection range of direction, helps the magnetic field environment of simulation better.
In the traditional detection process, the high-voltage circuit breaker is generally in an off-line state, and the biggest difference from the working state is that a primary loop does not have high-voltage electricity, so one of the differences between the detection environment and the working environment is a magnetic field, and various parameters of a secondary loop and a mechanical structure in the environment with different magnetic field strengths can have differences, so that the traditional detection result is not necessarily effective. The invention adds the magnetic field generator, and when in detection, the magnetic field generator changes the surrounding magnetic field environment, thereby ensuring the safety, and meanwhile, the detection device carries out conventional detection, so that whether each parameter of the secondary circuit of the high-voltage circuit breaker has a problem under different magnetic field environments can be known, the detection effectiveness can be ensured, and the problem that the detection result does not accord with the actual working time can be prevented.
Preferably, the magnetic field module includes: an electromagnet for generating a magnetic field; and the battery unit comprises a battery and an output module, and the output module controls the current of the battery to be output to the electromagnet. The battery unit is also arranged in the magnetic field module to rotate together with the roller, so that the complexity of the structure is reduced, the cost is reduced, and the maintenance is facilitated.
Preferably, the driving mechanism comprises a motor and a gear, the input end of the motor is connected with the control unit, the output end of the motor is connected with the gear, and the gear is connected with the rotating shaft. The control unit processes the electric energy provided by the power supply and then inputs the electric energy into the motor to control the motor to rotate.
Preferably, the number of the electromagnets is more than or equal to two, each electromagnet is connected in parallel, and the rotating shaft is perpendicular to the electromagnet core. In order to simplify the structure and reduce the cost, the electromagnets are arranged in a plurality of parallel connection modes. The perpendicular relation makes the change range of the magnetic field direction the biggest when rotating, and efficiency is the highest.
In addition, the scheme also comprises a comprehensive detection method of the high-voltage circuit breaker based on the ubiquitous power internet of things, which is used for the comprehensive detection system of the high-voltage circuit breaker based on the ubiquitous power internet of things and comprises the following steps:
s01: the detection device is connected with a secondary plug-in unit of the high-voltage circuit breaker, and is used for arranging and starting the vibration detector and the magnetic field generator; s02: and controlling the high-voltage circuit breaker to perform switching-on and switching-off operation, detecting the vibration and the state of the secondary circuit and uploading.
Preferably, in step S01, the process of arranging the vibration detector includes:
a11: two adjacent planes which form a certain angle with each other on the high-voltage circuit breaker are searched, and the intersection point of the two planes is taken as a target position;
a12: the target position is illuminated using the optical path unit of the vibration detector. Two planes perpendicular to each other are generally selected for detection.
Preferably, in step S02, the step of detecting the vibration includes:
a21: in the whole process of switching on and off, an image acquisition unit of the vibration detector respectively acquires light spot images on two planes;
a22: calculating mechanical performance parameters by using data of the light path unit and the image acquisition unit; a23: and searching different planes according to the detection requirement, and arranging and detecting for a plurality of times to measure the vibration conditions of the planes meeting the conditions on different parts. Preferably, the accuracy may be improved by multiple detections, and in step a22, the calculation process includes:
when the breaker vibrates in the opening and closing processes, the distance between the plane and the light path unit changes, so that the light spot image changes, and the light spot image is recorded as vibration after every positive and negative change, so that a vibration frequency curve is fitted; obtaining the time for opening and closing according to the time point for issuing the opening and closing instruction and starting vibration; and calculating the vibration amplitude according to the change amplitude of the light spot image.
Wherein the vibration amplitude calculation involves the following formula:
in the above formula, δ is the optical path difference, D is the distance from the slit to the imaging plane, x is the distance from the center of any bright stripe to the center of the central bright stripe on the imaging plane, D is the distance between two slits, λ is the wavelength of the light source, and n represents the order number, which is an integer, wherein the imaging plane is parallel to the plane of the slit; with a certain level of bright lines as the standard, the distance D from the slit to the imaging surface changes when the breaker vibrates, and D, n and lambda are not changed, so that x changes. Because in this technical scheme, the plane that the slit belongs to is not parallel with the actual imaging plane, therefore need set for ideal imaging plane, ideal imaging plane passes the bright line center of choosing and is on a parallel with the plane that the slit belongs to, again according to two image formation face actual angles and combine trigonometric function, convert between ideal imaging plane and the actual imaging plane, obtain the displacement amplitude that corresponds the imaging plane, vibration amplitude promptly, do not describe here any more.
Preferably, the another calculation process of step a22 includes:
splicing two light spot images acquired at the same time, marking as primary vibration after the center of the central bright line shifts once on both sides of the target position, and fitting a vibration frequency curve; obtaining the time for opening and closing according to the time point for issuing the opening and closing instruction and starting vibration; the vibration amplitude is calculated from the amplitude of the movement of the center of the central bright line. When the vibration direction has a component in the direction parallel to the plane of the slit, the center of the central bright line has a displacement relative to the target position, and similarly, the vibration amplitude of the displacement in the component direction can be easily obtained according to the included angle and the trigonometric function.
Preferably, in step S01, the process of arranging and activating the magnetic field generator includes:
b11: placing a magnetic field generator beside a high-voltage circuit breaker; b12: starting a magnetic field generator; b13: and changing the position relation between the magnetic field generator and the high-voltage circuit breaker, and executing the step B12 again for a plurality of times. The detection device and the magnetic field generator work together to detect various parameters of the secondary circuit of the high-voltage circuit breaker under different magnetic field environments, and the secondary circuit of the circuit breaker can be evaluated more comprehensively.
Preferably, the positional relationship of the magnetic field generator and the high voltage circuit breaker includes: distance and/or orientation relationship of the magnetic field generator to the high voltage circuit breaker; the arrangement direction of the magnetic field generator is the angular relation between the rotating shaft and the high-voltage circuit breaker. Wherein the distance and/or orientation relationship may be understood as placing the magnetic field generator in different orientations such as south, east, west, north, etc. of the high voltage circuit breaker while changing the distance between the two. The arrangement direction of the magnetic field generator can be understood as that the orientation of the magnetic field generator is changed under the condition that the distance and the azimuth relation are not changed, so that the initial magnetic field direction before rotation is changed, other different magnetic field directions in the rotation process are realized, and the detection is more comprehensive.
The substantial effects of the invention include: simple structure, it is not fragile, long service life, the detection mode is simple and convenient, can produce the magnetic field simultaneously in order to change the testing environment, makes the testing result reliability high, and make full use of the construction achievement of ubiquitous electric power thing networking, reduces the processing degree of difficulty of local information.
Drawings
FIG. 1 is a general schematic diagram of a first embodiment of the present invention;
FIG. 2 is a diagram of a vibration detector according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of a vibration detector according to a second embodiment of the present invention;
fig. 4 is a schematic view of a barrel-shaped hoop according to a second embodiment of the present invention;
FIG. 5 is a schematic diagram of an optical path unit according to a first embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a magnetic field generator according to a first embodiment of the present invention;
the figure includes: 1-circuit breaker, 2-measuring stand, 3-vertical support, 4-light path unit, 5-acquisition end, 6-rotating shaft, 7-barrel-shaped hoop, 8-movable joint, 10-control unit, 20-magnetic field generator, 25-roller, 26-driving mechanism, 27-electromagnet, 28-battery unit, 30-detection device, 40-vibration detector, 41-light source, 42-lens and 43-double-slit plate.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In addition, numerous specific details are set forth below in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present invention.
The first embodiment is as follows:
the utility model provides a high voltage circuit breaker integrated detection system based on ubiquitous electric power thing networking, includes server and local end, as shown in figure 1, local end includes: a vibration detector 40 that detects mechanical vibration of the circuit breaker 1; a magnetic field generator 20 that generates a changing magnetic field; a detection device 30 connected to the secondary plug-in of the circuit breaker 1 to detect the secondary circuit; the control unit 10 is connected with the vibration detector 40, the magnetic field generator 20 and the detection device 30 and uploads local data to the server; the server calculates various parameters of the circuit breaker 1 according to the obtained data. The high-voltage circuit breaker 1 can be influenced by a certain magnetic field in a working state, so that the mechanical vibration and the secondary circuit are detected in a simulated magnetic field environment, the mechanical vibration and the secondary circuit are closer to the working environment, and the reliability and the accuracy of detection are improved. Communication between server and the local makes full use of the construction achievement of ubiquitous electric power thing networking, reduces the local calculation and handles the degree of difficulty.
Wherein the detection device 30 is of a more conventional type and is not deployed.
Shown in fig. 2 is a vibration detector 40 including: a light path unit 4 for emitting mutually interfered emergent light to a target position; the image acquisition unit is used for shooting an image of a target position; the control unit 10 is connected with the light path unit 4 and the image acquisition unit and uploads the local data to the server; the measuring frame 2 bears the light path unit 4, the image acquisition unit and the control unit 10, and the light path unit 4 and the emergent angle or incident angle of the image acquisition unit form a certain angle; the vertical support 3 is connected with the measuring frame 2 through a rotating shaft 6; wherein the server calculates the mechanical performance parameters from the obtained data.
Wherein measuring rack 2 is L shape, and light path unit 4 sets up the right angle inboard at measuring rack 2, and light path unit 4's emergence angle and measuring rack 2's both arms become 45 degrees, and the image acquisition unit includes two collection ends 5, and two collection ends 5 are located two walls, and collection end 5 incident angle and light path unit 4 emergence angle all become 45 degrees. The acquisition end 5 is a high-speed camera. High speed cameras are an ideal choice because of the speed and clarity requirements of acquisition.
As shown in fig. 5, the optical path unit 4 includes: a light source 41 generating a primary light; a lens 42 to increase the initial light coverage area; the double slit plate 43 makes the initial light pass through the two slits and then become two mutually interfered emergent lights. The light source 41 is a laser, and images are formed on the plane of the surface of the circuit breaker 1 by using the interference principle to serve as reference information for image processing.
After the light path unit 4 emits the emergent light to the target position, the image acquisition unit continuously acquires images, strong vibration can be generated during opening and closing, the distance from the imaging plane to the emergent point can influence the width of the interference fringes, so the vibration can cause the change of the images, mechanical parameters such as the vibration frequency and amplitude of the circuit breaker 1 can be obtained by processing the images, and in addition, the system is not in direct contact with the circuit breaker 1, the measurement process is simple and convenient, the error is small, and the equipment is not easy to damage. Communication between server and the local makes full use of the construction achievement of ubiquitous electric power thing networking, reduces the local calculation and handles the degree of difficulty.
Aiming at a plane to be measured, the vibration measuring effect of the plane perpendicular to the plane is obvious, and the vibration parallel to the plane cannot be effectively detected, so that the light path unit 4 and the emergent angle or the incident angle of the image acquisition unit form a certain angle, light emitted by the light path unit 4 needs to be related to at least two planes simultaneously during use, and the image acquisition unit with the corresponding angle acquires images independently, so that the vibration in multiple directions is obtained, the measuring process is perfected, and the accuracy is improved.
Since the most common three-dimensional coordinates are perpendicular to each other, the design makes the two acquisition ends 5 at 90 degrees, and the vibration of two perpendicular planes can be measured at a time, and the vibration in each direction in the three-dimensional coordinates can be covered after at least two measurements.
As shown in fig. 6, the magnetic field generator 20 of the present embodiment includes: an apparatus main body that carries a built-in device; a drum 25 disposed in the apparatus main body and rotated by a rotation shaft; a magnetic field module, which is arranged in the roller 25 and generates a controllable magnetic field; and a driving mechanism 26 disposed in the apparatus body and connected to the rotation shaft, the rotation speed of which is controlled by the control unit 10. Magnetic field intensity can be controlled by changing current and the like, but the magnetic field direction is controlled by changing the current direction, so that only positive and negative selectable directions exist, the structure of the roller 25 is increased, the magnetic field module can rotate along with the roller 25 to change the magnetic field direction, the selection range of the direction is increased, and the magnetic field environment can be better simulated.
In the conventional detection process, the high-voltage circuit breaker 1 is generally in an off-line state, and the greatest difference from the working state is that the primary loop does not have high-voltage electricity, so that one of the differences between the detection environment and the working environment is a magnetic field, and the secondary loop and the mechanical structure have differences in various parameters in the environments with different magnetic field strengths, so that the conventional detection result is not necessarily effective. Therefore, the magnetic field generator 20 is added in the invention, when in detection, the magnetic field generator 20 changes the surrounding magnetic field environment, the safety is ensured, and meanwhile, the detection device 30 is used for carrying out conventional detection, so that whether each parameter of the secondary circuit of the high-voltage circuit breaker 1 has a problem under different magnetic field environments can be known, the detection effectiveness is ensured, and the problem that the detection result does not accord with the actual working time is prevented.
The magnetic field module includes: three electromagnets 27 generating magnetic fields; the battery unit 28 includes a battery and an output module, and the output module controls the current output from the battery to the electromagnet 27. The battery unit 28 is also disposed in the magnetic field module to rotate together with the drum 25, thereby reducing the complexity of the structure, reducing the cost, and facilitating maintenance.
The driving mechanism 26 comprises a motor and a gear, wherein the input end of the motor is connected with the control unit 10, the output end of the motor is connected with the gear, and the gear is connected with the rotating shaft. The control unit 10 processes the electric energy provided by the power supply and inputs the electric energy into the motor to control the motor to rotate.
Each electromagnet 27 is connected in parallel, and the rotating shaft is perpendicular to the iron core of the electromagnet 27. In order to simplify the structure and reduce the cost, the electromagnets 27 are provided in a plurality of parallel connection. The perpendicular relation makes the change range of the magnetic field direction the biggest when rotating, and efficiency is the highest.
In addition, the scheme also comprises a comprehensive detection method of the high-voltage circuit breaker 1 based on the ubiquitous power internet of things, which is used for the comprehensive detection system of the high-voltage circuit breaker 1 based on the ubiquitous power internet of things and comprises the following steps:
s01: the detection device 30 is connected with a secondary plug-in unit of the high-voltage circuit breaker 1, and is used for arranging and starting the vibration detector 40 and the magnetic field generator 20;
s02: and controlling the high-voltage circuit breaker 1 to perform switching-on and switching-off operation, detecting vibration and secondary circuit states and uploading.
In step S01, the process of arranging the vibration detector 40 includes:
a11: two adjacent planes which form a certain angle with each other on the high-voltage circuit breaker 1 are searched, and the intersection point of the two planes is taken as a target position;
a12: the target position is irradiated using the optical path unit of the vibration detector 40. Two planes perpendicular to each other are generally selected for detection.
In step S02, the process of detecting vibration includes:
a21: in the whole switching-on and switching-off process, the image acquisition unit of the vibration detector 40 respectively acquires light spot images on two planes; a22: calculating mechanical performance parameters by using data of the light path unit and the image acquisition unit; a23: and searching different planes according to the detection requirement, and arranging and detecting for a plurality of times to measure the vibration conditions of the planes meeting the conditions on different parts. In step a22, the accuracy can be improved by multiple detections, and the calculation process includes:
when the breaker 1 vibrates in the opening and closing processes, the distance between the plane and the light path unit changes, so that the light spot image changes, and the light spot image is recorded as vibration after every positive and negative change, so that a vibration frequency curve is fitted; obtaining the time for opening and closing according to the time point for issuing the opening and closing instruction and starting vibration; and calculating the vibration amplitude according to the change amplitude of the light spot image.
Wherein the vibration amplitude calculation involves the following formula:
in the above formula, δ is the optical path difference, D is the distance from the slit to the image plane, x is the distance from the center of any bright stripe to the center of the central bright stripe on the image plane, D is the distance between two slits, λ is the wavelength of the light source 41, and n represents the number of stages, which is an integer, wherein the image plane is parallel to the plane of the slit; with a certain level of bright lines as a standard, when the breaker 1 vibrates, the distance D from the slit to the imaging surface changes, and D, n and lambda are not changed, so that x changes. In the technical scheme, the plane where the slit is located is not parallel to the actual imaging plane, so an ideal imaging plane needs to be set, passes through the center of the selected bright stripe and is parallel to the plane where the slit is located, and then the ideal imaging plane and the actual imaging plane are converted according to the actual angles of the two imaging planes and by combining a trigonometric function, so that the displacement amplitude, namely the vibration amplitude of the corresponding imaging plane is obtained.
Taking fig. 5 as an example, D1+ D2 in the figure is equivalent to D in the formula, x is the distance from the center of any bright stripe to the center of the central bright stripe on the ideal imaging plane, and D is the distance between two slits. That is, the actual imaging surface is the plane irradiated on the circuit breaker 1, the ideal imaging surface is the plane passing through the center of the selected bright line and perpendicular to the initial light emitting direction, and since the measuring frame 2 of this embodiment is 90 degrees, the included angle of the selected target plane is also 90 degrees, at this moment, the actual imaging surface and the ideal imaging surface form 45 degrees, and therefore the bright line interval in the collected light spot image is 45 degrees
Thus, when n is selected and d and λ are not changed, the method can be usedAlternative to x, known from variations in the spot image
To calculate the change in D, i.e. the amplitude in that direction, the subsequent calculation process does not require any creative effort and is not expanded in detail.
Another calculation process of step a22 includes:
splicing two light spot images acquired at the same time, marking as primary vibration after the center of the central bright line shifts once on both sides of the target position, and fitting a vibration frequency curve; obtaining the time for opening and closing according to the time point for issuing the opening and closing instruction and starting vibration; the vibration amplitude is calculated from the amplitude of the movement of the center of the central bright line. When the vibration direction has a component in the direction parallel to the plane of the slit, the center of the central bright line has a displacement relative to the target position, and similarly, the vibration amplitude of the displacement in the component direction can be easily obtained according to the included angle and the trigonometric function.
When the vibration direction has a component in the direction parallel to the plane of the slit, the center of the central bright line has a displacement relative to the target position, and similarly, the vibration amplitude of the displacement in the component direction can be easily obtained according to the included angle and the trigonometric function. The calculation process is not described in detail.
In step S01, the process of arranging and activating the magnetic field generator 20 includes:
b11: the magnetic field generator 20 is placed beside the high voltage circuit breaker 1; b12: activating the magnetic field generator 20; b13: the positional relationship between the magnetic field generator 20 and the high voltage circuit breaker 1 is changed, and step B12 is executed again and repeated several times. The detection device 30 works together with the magnetic field generator 20 to detect various parameters of the secondary circuit of the high-voltage circuit breaker 1 under different magnetic field environments, so as to help more comprehensively evaluate the secondary circuit of the circuit breaker 1.
The positional relationship of the magnetic field generator 20 and the high voltage circuit breaker 1 includes: distance and/or orientation relationship of the magnetic field generator 20 to the high voltage circuit breaker 1; the magnetic field generator 20 is oriented, i.e. the angular relationship of the axis of rotation to the high voltage circuit breaker 1. Wherein the distance and/or orientation relationship is understood to mean that the magnetic field generator 20 is placed in different orientations of the high voltage circuit breaker 1, such as south-east-west-north, etc., while changing the distance between the two. The arrangement direction of the magnetic field generator 20 can be understood as that, under the condition that the distance and the azimuth relation are not changed, the orientation of the magnetic field generator 20 is changed, so that the initial magnetic field direction before rotation is changed, other different magnetic field directions in the rotation process are realized, and the detection is more comprehensive.
Example two:
as shown in fig. 3, the present embodiment is substantially the same as the first embodiment, except that the fixing frame of the vibration detector 40 is a barrel-shaped hoop 7, one side of the barrel-shaped hoop 7 is connected to the measuring frame 2 through a rotating shaft 6, and the other side of the barrel-shaped hoop 7 is adjusted by a screw. Wherein the vertical support 3 is intended to be placed on the ground during ground operations and the bucket-shaped hoop 7 is intended to be used during measurements near the utility pole or the like.
As shown in fig. 4, the bucket-shaped hoop is composed of a plurality of movable joints 8, and each movable joint 8 is connected with each other in the vertical direction. This design can increase structural strength.
The beneficial effects of this embodiment are not described in detail.
Through the description of the above embodiments, those skilled in the art will understand that, for convenience and simplicity of description, only the division of the above functional modules is used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of a specific device is divided into different functional modules to complete all or part of the above described functions.
In the embodiments provided in this application, it should be understood that the disclosed structures and methods may be implemented in other ways. For example, the above-described embodiments with respect to structures are merely illustrative, and for example, a module or a unit may be divided into only one logic function, and may have another division manner in actual implementation, for example, a plurality of units or components may be combined or may be integrated into another structure, or some features may be omitted or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, structures or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed to a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (18)
1. The utility model provides a high voltage circuit breaker integrated detection system based on ubiquitous electric power thing networking, includes server and local end, its characterized in that, and local end includes:
a vibration detector detecting mechanical vibration of the circuit breaker;
a magnetic field generator that generates a varying magnetic field;
the detection device is connected with the secondary plug-in of the circuit breaker and detects a secondary loop;
the control unit is connected with the vibration detector, the magnetic field generator and the detection device and uploads local data to the server;
and the server calculates various parameters of the circuit breaker according to the obtained data.
2. The comprehensive detection system for the high-voltage circuit breaker based on the ubiquitous power internet of things as claimed in claim 1, wherein the vibration detector comprises:
the light path unit is used for emitting emergent light which is interfered with each other to a target position;
the image acquisition unit is used for shooting an image of a target position and is connected with the control unit;
the measuring frame bears the light path unit and the image acquisition unit and enables the light path unit and the emergent angle or incident angle of the image acquisition unit to form a certain angle;
the fixed frame is connected with the measuring frame through a rotating shaft.
3. The comprehensive detection system for the high-voltage circuit breaker based on the ubiquitous power internet of things is characterized in that the image acquisition unit comprises two acquisition ends, and the two acquisition ends are located on two sides of the light path unit.
4. The comprehensive detection system for the high-voltage circuit breakers based on the ubiquitous power internet of things as claimed in claim 2 or 3, wherein the light path unit comprises:
a light source generating an initial light;
a lens to increase an initial light coverage area;
the double slit plate makes the initial light pass through two slits and then become two beams of emergent light which are mutually interfered.
5. The comprehensive detection system for the high-voltage circuit breaker based on the ubiquitous power internet of things is characterized in that the measuring frame is L-shaped, and the exit angle of the light path unit and the incident angle of the collecting end form an angle of 45 degrees.
6. The comprehensive detection system for the high-voltage circuit breaker based on the ubiquitous power internet of things is characterized in that the fixing frame is a vertical support or a barrel-shaped hoop, one side of the barrel-shaped hoop is connected with the measuring frame through a rotating shaft, and the tightness of the barrel-shaped hoop is adjusted through a screw on the other side of the barrel-shaped hoop.
7. The comprehensive detection system for the high-voltage circuit breaker based on the ubiquitous power internet of things is characterized in that the bucket-shaped hoop is composed of a plurality of movable joints, and each movable joint is connected with each other in the vertical direction.
8. The comprehensive detection system for the high-voltage circuit breakers based on the ubiquitous power internet of things as claimed in claim 1 or 2, wherein the magnetic field generator comprises:
an apparatus main body that carries a built-in device;
a drum disposed in the apparatus main body and rotated by a rotation shaft;
the magnetic field module is arranged in the roller and generates a controllable magnetic field;
and the driving mechanism is arranged in the equipment main body, is connected with the rotating shaft and is controlled by the control unit to rotate.
9. The comprehensive detection system for the high-voltage circuit breaker based on the Internet of things of ubiquitous power of claim 8, wherein the magnetic field module comprises:
an electromagnet for generating a magnetic field;
and the battery unit comprises a battery and an output module, and the output module controls the current of the battery to be output to the electromagnet.
10. The comprehensive detection system for the high-voltage circuit breaker based on the Internet of things of ubiquitous power as claimed in claim 8, wherein the driving mechanism comprises a motor and a gear, an input end of the motor is connected with the control unit, an output end of the motor is connected with the gear, and the gear is connected with the rotating shaft.
11. The comprehensive detection system for the high-voltage circuit breaker based on the ubiquitous power internet of things is characterized in that the number of the electromagnets is greater than or equal to two, each electromagnet is connected in parallel, and a rotating shaft is perpendicular to an electromagnet iron core.
12. The comprehensive detection method of the high-voltage circuit breaker based on the ubiquitous power internet of things is used for the comprehensive detection system of the high-voltage circuit breaker based on the ubiquitous power internet of things, and is characterized by comprising the following steps of:
s01: the detection device is connected with a secondary plug-in unit of the high-voltage circuit breaker, and is used for arranging and starting the vibration detector and the magnetic field generator;
s02: and controlling the high-voltage circuit breaker to perform switching-on and switching-off operation, detecting the vibration and the state of the secondary circuit and uploading.
13. The comprehensive detection method for the high-voltage circuit breaker based on the internet of things of ubiquitous power as claimed in claim 12, wherein the step S01 of arranging the vibration detector comprises:
a11: two adjacent planes which form a certain angle with each other on the high-voltage circuit breaker are searched, and the intersection point of the two planes is taken as a target position;
a12: the target position is illuminated using the optical path unit of the vibration detector.
14. The comprehensive detection method for the high-voltage circuit breaker based on the internet of things of ubiquitous power as claimed in claim 13, wherein in the step S02, the step of detecting the vibration comprises:
a21: in the whole process of switching on and off, an image acquisition unit of the vibration detector respectively acquires light spot images on two planes;
a22: calculating mechanical performance parameters by using data of the light path unit and the image acquisition unit;
a23: and searching different planes according to the detection requirement, and arranging and detecting for a plurality of times to measure the vibration conditions of the planes meeting the conditions on different parts.
15. The comprehensive detection method for the high-voltage circuit breaker based on the internet of things of ubiquitous power as claimed in claim 14, wherein in the step a22, the calculation process comprises:
when the breaker vibrates in the opening and closing processes, the distance between the plane and the light path unit changes, so that the light spot image changes, and the light spot image is recorded as vibration after every positive and negative change, so that a vibration frequency curve is fitted; obtaining the time for opening and closing according to the time point for issuing the opening and closing instruction and starting vibration; and calculating the vibration amplitude according to the change amplitude of the light spot image.
16. The comprehensive detection method for the high-voltage circuit breaker based on the internet of things of ubiquitous power as claimed in claim 14, wherein the other calculation process of the step a22 comprises:
splicing two light spot images acquired at the same time, marking as primary vibration after the center of the central bright line shifts once on both sides of the target position, and fitting a vibration frequency curve; obtaining the time for opening and closing according to the time point for issuing the opening and closing instruction and starting vibration; the vibration amplitude is calculated from the amplitude of the movement of the center of the central bright line.
17. The comprehensive detection method for the high-voltage circuit breaker based on the internet of things of ubiquitous power as claimed in claim 12, wherein in step S01, the process of arranging and activating the magnetic field generator comprises:
b11: placing a magnetic field generator beside a high-voltage circuit breaker;
b12: starting a magnetic field generator;
b13: and changing the position relation between the magnetic field generator and the high-voltage circuit breaker, and executing the step B12 again for a plurality of times.
18. The comprehensive detection method for the high-voltage circuit breaker based on the ubiquitous power internet of things as claimed in claim 17, wherein the position relationship between the magnetic field generator and the high-voltage circuit breaker comprises: distance and/or orientation relationship of the magnetic field generator to the high voltage circuit breaker; the arrangement direction of the magnetic field generator is the angular relation between the rotating shaft and the high-voltage circuit breaker.
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