CN108614208B - Device and method for detecting opening and closing voltage drop data of circuit breaker of hydraulic operating mechanism - Google Patents
Device and method for detecting opening and closing voltage drop data of circuit breaker of hydraulic operating mechanism Download PDFInfo
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- CN108614208B CN108614208B CN201810453137.0A CN201810453137A CN108614208B CN 108614208 B CN108614208 B CN 108614208B CN 201810453137 A CN201810453137 A CN 201810453137A CN 108614208 B CN108614208 B CN 108614208B
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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
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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Abstract
The invention provides a device and a method for detecting the opening and closing voltage drop data of a circuit breaker of a hydraulic operating mechanism, which relate to the technical field of high-voltage circuit breaker detection and comprise a high-voltage circuit breaker and a detection device which are connected with each other, wherein the detection device comprises an image acquisition device and a signal acquisition device; under the condition that a pressure relief valve of the high-voltage circuit breaker is closed, the key module is operated, a test instruction is sent to the processor, the switching-on and switching-off processing module acquires a coil current signal of the high-voltage circuit breaker, the camera acquires a real-time pressure value of the high-voltage circuit breaker, the processor determines switching-on and switching-off actions according to the coil current signal, records and processes the real-time pressure value according to the switching-on and switching-off actions, and a switching-on and switching-off voltage drop value is generated. The invention avoids fatigue caused by long-time manual detection by automatically measuring and recording, improves the working efficiency, and can improve the time controllability and the accuracy of the measuring result by utilizing the signal acquisition device to acquire and process the signals.
Description
Technical Field
The invention relates to the technical field of high-voltage circuit breaker detection, in particular to a device and a method for detecting the opening and closing voltage drop data of a circuit breaker of a hydraulic operating mechanism.
Background
In order to ensure that a circuit breaker operated by a hydraulic mechanism can be correctly switched on and switched off for multiple times under the condition that an energy storage power supply is disconnected, energy loss generated in the switching-off process and energy loss generated in the switching-on process of the circuit breaker are measured, and in specific work, the energy loss can be judged by measuring the pressure difference of an energy storage medium before and after switching-off and the pressure difference before and after switching-on, namely, switching-off pressure drop and switching-on pressure drop. At the present stage, manual judgment is mainly adopted. The tester records the numerical value of the pressure gauge before opening the brake, records the pressure value after opening the brake after manually opening the brake, and the two are subtracted to obtain the pressure drop of opening the brake, and the measurement of the pressure drop of closing the brake is the same. The method has higher requirement on testers, the mechanical meter adopted by the pressure gauge has errors in reading of the testers, and the two readings cannot be ensured to be observed at the same position; reading is needed immediately after opening or closing, otherwise, the pressure can drop or rise to influence the reading, and the accuracy is low; after the work is finished, the form needs to be manually filled and calculated, and the standard value is compared, so that the test efficiency is low.
Disclosure of Invention
In view of the above, the present invention provides a device and a method for detecting opening/closing voltage drop data of a circuit breaker of a closing hydraulic operating mechanism, wherein the device automatically performs measurement and recording to avoid fatigue caused by long-time manual detection, so as to improve work efficiency, and the signal acquisition device is used to acquire and process signals, so as to improve time controllability and accuracy of measurement results.
In a first aspect, the embodiment of the invention provides a device for detecting opening and closing voltage drop data of a circuit breaker of a hydraulic operating mechanism, wherein the device comprises a high-voltage circuit breaker and a detection device which are connected, the detection device comprises an image acquisition device and a signal acquisition device, the image acquisition device comprises a camera and a key module, the signal acquisition device comprises a processor and an opening and closing processing module which are connected, and the processor is also connected with the camera and the key module;
under the condition that a pressure relief valve of the high-voltage circuit breaker is closed, the key module is operated, a test instruction is sent to the processor, the switching-on and switching-off processing module collects coil current signals of the high-voltage circuit breaker, the camera collects real-time pressure values of the high-voltage circuit breaker, the processor determines switching-on and switching-off actions according to the coil current signals, and records and processes the real-time pressure values according to the switching-on and switching-off actions to generate switching-on and switching-off voltage drop values.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the switching-on/off voltage drop value includes a switching-on voltage drop value, and the switching-on/off processing module includes a switching-on control circuit module and a digital-to-analog conversion module that are connected to the processor, and a switching-on coil and a switching-on ammeter that are connected between the switching-on control circuit module and the digital-to-analog conversion module;
under the condition that a pressure relief valve of the high-voltage circuit breaker is closed, operating the key module, sending a switching-on test starting instruction to the processor, correspondingly, collecting a first pressure value by the camera, and sending the first pressure value to the processor for recording;
the key module is operated, a closing control instruction is sent to the closing control circuit module, so that the closing coil is controlled to be closed, the closing ammeter collects a closing coil current signal of the high-voltage circuit breaker, and when the closing coil current signal is larger than a first current value, the processor records a second pressure value correspondingly collected by the camera;
and the processor generates the closing pressure drop value according to the first pressure value and the second pressure value.
With reference to the first possible implementation manner of the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the switching on/off voltage drop value includes a switching off voltage drop value, the switching on/off processing module further includes a switching off control circuit module connected to the processor, and a switching off coil and a switching off ammeter connected between the switching off control circuit module and the digital-to-analog conversion module;
operating the key module, sending a switching-off test starting instruction to the processor, correspondingly, collecting a third pressure value by the camera, and sending the third pressure value to the processor for recording;
the key module is operated, a brake-separating control instruction is sent to the brake-separating control circuit module, the brake-separating coil is controlled to be separated, the brake-separating ammeter collects current signals of the brake-separating coil of the high-voltage circuit breaker, and when the current signals of the brake-separating coil are larger than a second current value, the processor records a fourth pressure value correspondingly collected by the camera;
and the processor generates the opening brake pressure drop value according to the third pressure value and the fourth pressure value.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the image capturing apparatus further includes a display;
the display is connected with the processor and receives and displays the switching-on/off brake voltage drop value sent by the display.
With reference to the third possible implementation manner of the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the image capturing device further includes a panel and a supporting rod, and the supporting rod is vertically fixed on the panel;
the camera is supported above the supporting rod, the key module and the display are arranged on the surface of the panel, and the signal acquisition device is arranged inside the panel.
With reference to the fourth possible implementation manner of the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, wherein the detection apparatus further includes a connection terminal, a power terminal, and a ground terminal, which are disposed on a surface of the panel.
With reference to the fifth possible implementation manner of the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, wherein the high-voltage circuit breaker is connected to the connection terminal through a secondary line.
With reference to the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, where the camera level corresponds to a pressure gauge in the high-voltage circuit breaker.
With reference to the first aspect, an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, where the signal acquisition device further includes a clock module and a storage module.
In a second aspect, an embodiment of the present invention further provides a method for detecting opening/closing voltage drop data of a circuit breaker of a hydraulic operating mechanism, where the method includes:
under the condition that a pressure relief valve of the high-voltage circuit breaker is closed, operating the key module and sending a test instruction to the processor;
the switching-on and switching-off processing module acquires a coil current signal of the high-voltage circuit breaker, and the camera acquires a real-time pressure value of the high-voltage circuit breaker;
and the processor determines the switching-on and switching-off actions according to the coil current signals, records and processes the real-time pressure value according to the switching-on and switching-off actions, and generates a switching-on and switching-off voltage drop value.
The embodiment of the invention has the following beneficial effects:
the invention provides a device and a method for detecting opening and closing voltage drop data of a circuit breaker of a hydraulic operating mechanism, which comprise a high-voltage circuit breaker and a detection device which are connected, wherein the detection device comprises an image acquisition device and a signal acquisition device, the image acquisition device comprises a camera and a key module, the signal acquisition device comprises a processor and an opening and closing processing module which are connected, and the processor is also connected with the camera and the key module; under the condition that a pressure relief valve of the high-voltage circuit breaker is closed, the key module is operated, a test instruction is sent to the processor, the switching-on and switching-off processing module acquires a coil current signal of the high-voltage circuit breaker, the camera acquires a real-time pressure value of the high-voltage circuit breaker, the processor determines switching-on and switching-off actions according to the coil current signal, records and processes the real-time pressure value according to the switching-on and switching-off actions, and a switching-on and switching-off voltage drop value is generated. The invention avoids fatigue caused by long-time manual detection by automatically measuring and recording, improves the working efficiency, and can improve the time controllability and the accuracy of the measuring result by utilizing the signal acquisition device to acquire and process the signals.
The invention provides a device and a method for detecting the opening and closing voltage drop data of a circuit breaker of a hydraulic operating mechanism, wherein the device comprises a high-voltage circuit breaker and a detection device which are connected, and the detection device comprises an image acquisition device and a signal acquisition device; the method comprises the steps of operating a key module, sending a test starting instruction to a processor, executing a pressure valve opening and closing action on a high-voltage circuit breaker, acquiring a coil current signal of the high-voltage circuit breaker by a switching-on and switching-off processing module in the process of executing the pressure valve opening and closing action, acquiring a real-time pressure value of the high-voltage circuit breaker by a camera, determining the switching-on and switching-off action by the processor according to the coil current signal, recording and processing the real-time pressure value according to the switching-on and switching-off action, and generating a switching-on and switching-off voltage. The invention avoids fatigue caused by long-time manual detection by automatically measuring and recording, improves the working efficiency, and can improve the time controllability and the accuracy of the measuring result by utilizing the signal acquisition device to acquire and process the signals.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a circuit breaker opening/closing voltage drop data detection device of a hydraulic operating mechanism according to a first embodiment of the present invention;
fig. 2 is a schematic view of a switching detection device according to a first embodiment of the present invention;
fig. 3 is a schematic diagram of a signal acquisition device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of another signal acquisition device according to an embodiment of the present invention.
Icon:
110-a camera; 120-a support bar; 130-a display; 140-a key module; 150-a panel; 160-a power supply terminal; 170-connecting terminal; 210-a processor; 221-a switching-on control circuit module; 222-a closing coil; 223-switching on ammeter; 231-a switching-off control circuit module; 232-opening coil; 233-brake-off ammeter; 240-digital-to-analog conversion module; 250-a clock module; 260-a storage module; 300-high voltage circuit breaker.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. 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.
In order to ensure that the circuit breaker operated by the hydraulic mechanism can be correctly switched on and off for multiple times under the condition that the energy storage power supply is disconnected, the energy loss generated in the switching-off process and the energy loss generated in the switching-on process of the circuit breaker must be measured. The measurement method at the present stage has higher requirements on testers, the mechanical meter adopted by the pressure gauge has errors in reading of the testers, and the two readings cannot be ensured to be observed at the same position; reading is needed immediately after opening or closing, otherwise, the pressure can drop or rise to influence the reading, and the accuracy is low; after the work is finished, the form needs to be manually filled and calculated, and the standard value is compared, so that the test efficiency is low.
Based on the above, the device and the method for detecting the opening and closing voltage drop data of the circuit breaker of the closing hydraulic operating mechanism provided by the embodiment of the invention can automatically measure and record through the device, avoid fatigue caused by long-time manual detection, improve the working efficiency, and can improve the time controllability and the accuracy of the measurement result by acquiring and processing signals through the signal acquisition device.
For the convenience of understanding the present embodiment, the opening and closing detection device disclosed in the present embodiment will be described in detail first.
The first embodiment is as follows:
fig. 1 is a schematic diagram of a device for detecting opening/closing voltage drop data of a circuit breaker of a hydraulic operating mechanism according to an embodiment of the present invention.
Referring to fig. 1, the device for detecting the opening/closing voltage drop data of the circuit breaker of the hydraulic operating mechanism comprises a high-voltage circuit breaker 300 and a detection device. Referring to fig. 2, the detecting device includes: image acquisition device and signal acquisition device. The image capturing device includes a camera 110, the camera 110 is fixed on a panel 150 through a supporting rod 120, a key module 140, a display 130, a power terminal 160 and a connecting terminal 170 are disposed on an upper surface of the panel 150, and a ground terminal (not shown in the figure) is disposed below the panel 150, wherein the display 130 may be an LCD display.
The connection terminal 170 in the detection device is connected to the high voltage circuit breaker 300 through a secondary line, and the camera 110 in the detection device horizontally corresponds to a pressure gauge in the high voltage circuit breaker 300. Here, the connection terminals 170 to be connected differently are selected according to the test contents.
The signal acquisition device is disposed inside the panel 150. Referring to fig. 3, the signal acquisition device includes a processor 210 and a switching-on/off processing module connected to each other, and further includes a clock module 250 and a storage module 260 both connected to the processor 210; the processor 210 is also connected to the camera 110, the key module 140 and the display 130; the switching-on/off processing module comprises: the switching-on control circuit module 221, the switching-on coil 222, the switching-off control circuit module 231, the switching-off coil 232 and the digital-to-analog conversion module 240.
The operation principle of the opening and closing detection device of the high voltage circuit breaker 300 is as follows.
The power supply is switched on through the power supply terminal 160, the detection device is placed at a proper position, and the height and the direction of the camera 110 are adjusted, so that the camera 110 is horizontally aligned with the pressure gauge of the high-voltage circuit breaker 300. The connection terminals 170 are connected to the corresponding signal terminals and control terminals in the terminal block of the high voltage circuit breaker 300 using secondary wires. Here, read the figure in the manometer through camera and the cooperation of treater to, the camera is fixed in same position, helps the accurate judgement of many times reading, can read immediately after the divide-shut brake, reduces the error, and whether the automatic record data is qualified in the back of the work completion and judgement, and then can improve work efficiency and test accuracy.
The button module 140 is operated by disconnecting the energy storage power supply and closing the pressure relief valve of the high-voltage circuit breaker 300 by the staff, and the button module 140 is provided with a plurality of buttons, so that the cursor can move on the panel 150, the content can be input, and the opening and closing of the high-voltage circuit breaker 300 can be controlled. In a specific implementation, the device information of the tested circuit breaker device (here, the high-voltage circuit breaker 300) is determined through the setting operation, and the corresponding test is started on the high-voltage circuit breaker 300 through the clicking operation, so that a test instruction is generated.
Under the condition that the pressure relief valve of the high-voltage circuit breaker 300 is closed, the key module 140 is operated, a test starting instruction is sent to the processor 210, the switching-on and switching-off processing module acquires a coil current signal of the high-voltage circuit breaker 300, in the whole test process, the camera continuously acquires a real-time pressure value of the high-voltage circuit breaker 300, the processor 210 determines switching-on and switching-off actions according to the coil current signal, records and processes the real-time pressure value according to the switching-on and switching-off actions, and a switching-on and switching-off voltage drop value is generated. The processor 210 further sends the switching-on/off brake voltage drop value to the display 130 for displaying, and the processor 210 further stores the coil current signal and the real-time pressure value in the storage module 260.
The specific implementation time is divided into a closing voltage drop test process and an opening voltage drop test process.
And (5) testing the closing voltage drop. Under the condition that the pressure relief valve of the high-voltage circuit breaker 300 is closed, a worker firstly operates the key module 140, a switching-on test starting instruction is sent to the processor 210, the switching-on and voltage reduction test process is determined to enter, and correspondingly, the processor 210 records a first pressure value acquired by the camera 110 at the moment; then, the key module 140 is operated, a closing control instruction is sent to the closing control circuit module 221, so that the closing coil 222 is controlled to close the high-voltage circuit breaker 300, the closing ammeter 223 collects a closing coil current signal of the high-voltage circuit breaker 300, and when the closing coil current signal is greater than a first current value, a certain time (for example, 50ms) is delayed, and the processor 210 records a second pressure value collected by the camera 110 at the moment; finally, the processor 210 determines a closing pressure drop value according to the first pressure value and the second pressure value, specifically, the closing pressure drop value is obtained by subtracting the second pressure value from the first pressure value.
And (5) a brake-separating voltage drop testing process. The operator continues to operate the key module 140, sends a switching-off test starting instruction to the processor 210, determines to enter a switching-off voltage reduction test process, and correspondingly, the processor 210 records a third pressure value acquired by the camera 110 at the moment; then, the key module 140 is operated, a switching-off control instruction is sent to the switching-off control circuit module 231, the switching-off coil 232 is controlled to switch off the high-voltage circuit breaker 300, the switching-off ammeter 233 collects current signals of the switching-off coil of the high-voltage circuit breaker 300, and when the current signals of the switching-off coil are greater than a second current value, a certain time (for example, 50ms) is delayed, and the processor 210 records a fourth pressure value collected by the camera 110 at the moment; finally, the processor 210 determines a closing pressure drop value according to the third pressure value and the fourth pressure value, specifically, the fourth pressure value is subtracted from the third pressure value to obtain an opening pressure drop value.
Finally, the above test process is ended by operating the key module 140.
Example two:
based on the device for detecting the opening and closing voltage drop data of the circuit breaker of the hydraulic operating mechanism provided by the embodiment, the embodiment also provides a method for detecting the opening and closing voltage drop data of the circuit breaker of the hydraulic operating mechanism. The method mainly comprises the following steps:
firstly, under the condition of closing a pressure relief valve of a high-voltage circuit breaker, operating a key module and sending a test instruction to a processor;
secondly, a switching-on/off processing module acquires a coil current signal of the high-voltage circuit breaker, and a camera acquires a real-time pressure value of the high-voltage circuit breaker;
and thirdly, the processor determines the switching-on and switching-off actions according to the coil current signals, and records and processes the real-time pressure value according to the switching-on and switching-off actions to generate switching-on and switching-off voltage drop values.
The method provided by the embodiment of the present invention has the same implementation principle and technical effect as the foregoing device embodiment, and for the sake of brief description, reference may be made to the corresponding contents in the foregoing device embodiment for the part of the method embodiment that is not mentioned.
The embodiment of the invention has the following beneficial effects:
the invention provides a device and a method for detecting opening and closing voltage drop data of a circuit breaker of a hydraulic operating mechanism, which comprise a high-voltage circuit breaker and a detection device which are connected, wherein the detection device comprises an image acquisition device and a signal acquisition device, the image acquisition device comprises a camera and a key module, the signal acquisition device comprises a processor and an opening and closing processing module which are connected, and the processor is also connected with the camera and the key module; under the condition that a pressure relief valve of the high-voltage circuit breaker is closed, the key module is operated, a test instruction is sent to the processor, the switching-on and switching-off processing module acquires a coil current signal of the high-voltage circuit breaker, the camera acquires a real-time pressure value of the high-voltage circuit breaker, the processor determines switching-on and switching-off actions according to the coil current signal, records and processes the real-time pressure value according to the switching-on and switching-off actions, and a switching-on and switching-off voltage drop value is generated. The invention avoids fatigue caused by long-time manual detection by automatically measuring and recording, improves the working efficiency, and can improve the time controllability and the accuracy of the measuring result by utilizing the signal acquisition device to acquire and process the signals.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, 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 of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. 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 invention 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 functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The device for detecting the opening and closing voltage drop data of the circuit breaker of the hydraulic operating mechanism is characterized by comprising a high-voltage circuit breaker and a detection device which are connected, wherein the detection device comprises an image acquisition device and a signal acquisition device, the image acquisition device comprises a camera and a key module, the signal acquisition device comprises a processor and an opening and closing processing module which are connected, and the processor is also connected with the camera and the key module;
under the condition that a pressure relief valve of the high-voltage circuit breaker is closed, operating the key module, sending a test instruction to the processor, acquiring a coil current signal of the high-voltage circuit breaker by the switching-on and switching-off processing module, acquiring a real-time pressure value of the high-voltage circuit breaker by the camera, determining switching-on and switching-off actions by the processor according to the coil current signal, recording and processing the real-time pressure value according to the switching-on and switching-off actions, and generating a switching-on and switching-off voltage drop value;
the switching-on/off voltage drop value comprises a switching-on voltage drop value, and the switching-on/off processing module comprises a switching-on control circuit module, a digital-to-analog conversion module, a switching-on coil and a switching-on ammeter, wherein the switching-on/off control circuit module and the digital-to-analog conversion module are connected with the processor;
under the condition that a pressure relief valve of the high-voltage circuit breaker is closed, operating the key module, sending a switching-on test starting instruction to the processor, correspondingly, collecting a first pressure value by the camera, and sending the first pressure value to the processor for recording;
the key module is operated, a closing control instruction is sent to the closing control circuit module, so that the closing coil is controlled to be closed, the closing ammeter collects a closing coil current signal of the high-voltage circuit breaker, and when the closing coil current signal is larger than a first current value, the processor records a second pressure value correspondingly collected by the camera;
and the processor generates the closing pressure drop value according to the first pressure value and the second pressure value.
2. The device for detecting the opening and closing brake voltage drop data of the circuit breaker of the hydraulic operating mechanism according to claim 1, wherein the opening and closing brake voltage drop value comprises an opening brake voltage drop value, the opening and closing brake processing module further comprises an opening brake control circuit module connected with the processor, and an opening brake coil and an opening brake ammeter which are connected between the opening brake control circuit module and the digital-to-analog conversion module;
operating the key module, sending a switching-off test starting instruction to the processor, correspondingly, collecting a third pressure value by the camera, and sending the third pressure value to the processor for recording;
the key module is operated, a brake-separating control instruction is sent to the brake-separating control circuit module, the brake-separating coil is controlled to be separated, the brake-separating ammeter collects current signals of the brake-separating coil of the high-voltage circuit breaker, and when the current signals of the brake-separating coil are larger than a second current value, the processor records a fourth pressure value correspondingly collected by the camera;
and the processor generates the opening brake pressure drop value according to the third pressure value and the fourth pressure value.
3. The hydraulic operating mechanism circuit breaker opening and closing voltage drop data detection device of claim 1, the image acquisition device further comprising a display;
the display is connected with the processor and receives and displays the switching-on/off brake voltage drop value sent by the display.
4. The opening and closing voltage drop data detection device of the circuit breaker of the hydraulic operating mechanism according to claim 3, wherein the image acquisition device further comprises a panel and a support rod, and the support rod is vertically fixed on the panel;
the camera is supported above the supporting rod, the key module and the display are arranged on the surface of the panel, and the signal acquisition device is arranged inside the panel.
5. The apparatus for detecting opening/closing voltage drop data of a circuit breaker of a hydraulic operating mechanism according to claim 4, wherein the apparatus further comprises a connection terminal, a power terminal and a ground terminal disposed on the surface of the panel.
6. The apparatus for detecting opening/closing voltage drop data of a circuit breaker of a hydraulic operating mechanism according to claim 5, wherein the high-voltage circuit breaker is connected to the connection terminal through a secondary line.
7. The apparatus for detecting opening/closing voltage drop data of a circuit breaker of a hydraulic operating mechanism according to claim 1, wherein the camera horizontally corresponds to a pressure gauge in the high-voltage circuit breaker.
8. The apparatus for detecting opening and closing voltage drop data of a circuit breaker of a hydraulic operating mechanism according to claim 1, wherein the signal acquisition device further comprises a clock module and a storage module.
9. A method for detecting the opening and closing voltage drop data of a circuit breaker of a hydraulic operating mechanism is characterized by comprising the following steps:
under the condition that a pressure relief valve of the high-voltage circuit breaker is closed, operating the key module and sending a test instruction to the processor;
the switching-on and switching-off processing module acquires a coil current signal of the high-voltage circuit breaker, and the camera acquires a real-time pressure value of the high-voltage circuit breaker;
the processor determines switching-on and switching-off actions according to the coil current signals, records and processes the real-time pressure value according to the switching-on and switching-off actions, and generates switching-on and switching-off voltage drop values;
the switching-on/off voltage drop value comprises a switching-on voltage drop value, and the method further comprises the following steps:
under the condition that a pressure relief valve of the high-voltage circuit breaker is closed, operating the key module and sending a switching-on test starting instruction to the processor;
the camera collects a first pressure value and sends the first pressure value to the processor for recording;
operating the key module, and sending a closing control instruction to the closing control circuit module so as to control the closing coil to close;
the switching-on ammeter acquires a switching-on coil current signal of the high-voltage circuit breaker, and the processor records a second pressure value correspondingly acquired by the camera when the switching-on coil current signal is greater than a first current value;
and the processor generates the closing pressure drop value according to the first pressure value and the second pressure value.
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| CN109658767B (en) * | 2018-12-24 | 2021-02-12 | 国家电网有限公司 | Circuit breaker operating mechanism performance detection device |
| CN112182811B (en) * | 2020-11-03 | 2022-11-01 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Method and device for evaluating operating pressure loss value of hydraulic operating mechanism, electronic equipment and storage medium |
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| US6615680B1 (en) * | 1997-01-08 | 2003-09-09 | Lear Automotive Dearborn, Inc. | Method of testing switch design to quantify feel |
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