CN112213596A - Simulated fault arc generation device, system, detection method and storage medium - Google Patents
Simulated fault arc generation device, system, detection method and storage medium Download PDFInfo
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- CN112213596A CN112213596A CN202011104789.7A CN202011104789A CN112213596A CN 112213596 A CN112213596 A CN 112213596A CN 202011104789 A CN202011104789 A CN 202011104789A CN 112213596 A CN112213596 A CN 112213596A
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- 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
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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Abstract
The application relates to a simulated fault arc generation device, a simulated fault arc generation system, a detection method and a storage medium, which are applied to the technical field of electrical detection, wherein the device comprises: the fixed electrode, the fixed bolster, is used for supporting and fixing the fixed electrode, the movable electrode, set up opposite to fixed electrode; a moving mechanism for controlling the movement of the moving electrode; the temperature collector is used for collecting a first temperature value at the contact surface of the movable electrode and the fixed electrode; the controller is used for receiving the first temperature value sent by the temperature collector, controlling the fixed electrode, the movable electrode and the moving mechanism to perform an arc experiment, and performing the next arc experiment when the first temperature value is smaller than a first preset temperature value after the first arc experiment is finished; and the voltage detection interface is used for connecting the voltage detector so as to detect the voltages at two ends of the fixed electrode and the movable electrode through the voltage detector and judge whether the electric arc is generated.
Description
Technical Field
The present disclosure relates to electrical detection technologies, and in particular, to a device, a system, a method and a storage medium for simulating arc fault generation.
Background
In a cable fire accident, a fault arc is one of the major factors which are not ignored all the time, if the fault arc is not found in time and remains for a long time, the heat is accumulated, so that the cable cladding material is promoted to crack and a carbonization channel is formed between electrodes, and finally high-energy arc discharge is initiated, and open fire of the cable is generated to burn, thereby initiating a fire.
In order to research the characteristics of the fault arc under the laboratory condition, an arc fault test platform is often required to be built, an arc simulation generating device is designed to simulate the generation of the fault arc, and meanwhile, the accurate quantitative analysis of arc characteristic parameters (arcing current, arc voltage and arcing time) and the test research in the aspects of fault arc detection and the like can be guaranteed.
In the related art, when the arc is simulated by the experimental device for simulating the arc, multiple experiments are often required, and along with the increase of the experiment times, the temperatures of the movable electrode and the fixed electrode are increased due to multiple discharges, so that the experiment results are inaccurate.
Disclosure of Invention
The application provides a simulated fault arc generation device, a simulated fault arc generation system, a simulated fault arc detection method and a storage medium, which are used for solving the problem that in the prior art, along with the increase of experiment times, the temperatures of a movable electrode and a fixed electrode are increased due to multiple discharges, so that the experiment results are inaccurate.
In a first aspect, an embodiment of the present application provides a simulated fault arc generation device, including:
a fixed electrode;
the fixed support is used for supporting and fixing the fixed electrode;
a movable electrode disposed opposite to the fixed electrode;
a moving mechanism for controlling the moving electrode to move;
the temperature collector is used for collecting a first temperature value at the contact surface of the movable electrode and the fixed electrode;
the controller is used for receiving a first temperature value sent by the temperature collector, controlling the fixed electrode, the movable electrode and the moving mechanism to perform an arc experiment, and performing the next arc experiment when the first temperature value is smaller than a first preset temperature value after the arc experiment is finished;
and the voltage detection interface is used for connecting a voltage detector so as to detect the voltages at two ends of the fixed electrode and the movable electrode through the voltage detector and judge whether an electric arc is generated.
Optionally, the controller is configured to:
sending a first moving instruction to the moving mechanism, so that the moving mechanism moves the moving electrode after receiving the first moving instruction, and the moving electrode is made to contact with the fixed electrode;
and after the movable electrode is contacted with the fixed electrode, sending a second movement instruction to the moving mechanism so that the moving mechanism moves the movable electrode after receiving the second movement instruction, so that the movable electrode is far away from the fixed electrode, an electric arc is generated between the movable electrode and the fixed electrode, and when the first temperature value is smaller than the first preset temperature value, carrying out the next electric arc experiment.
Optionally, the controller is configured to:
after an electric arc is generated between the movable electrode and the fixed electrode, a second temperature value acquired by the temperature acquisition unit is acquired;
judging whether the second temperature value is greater than a second preset temperature value or not;
if so, sending the second moving instruction to the moving mechanism;
if not, judging whether the tripping is successful;
and recording the number of times of tripping success and/or tripping failure, and sending a second moving instruction to the moving mechanism.
Optionally, the fixing bracket includes: the support device comprises a base, a first support plate and a first support rod;
the first end of the first supporting rod is fixedly connected with the base, and the second end of the first supporting rod is slidably connected with the first supporting plate;
the fixed electrode is fixed on the first supporting plate.
Optionally, the moving mechanism includes: the motor, the second support rod and the second support plate;
one end of the first supporting rod is fixedly connected with the motor, and the other end of the first supporting rod is rotatably connected with the second supporting plate;
the motor is connected with the controller and used for receiving the first moving instruction and driving the second supporting rod to rotate;
the movable electrode is fixedly arranged on the second support plate;
the second supporting plate is provided with a through hole, and the second supporting plate slides on the first supporting rod through the through hole.
Optionally, the method further includes: arranging a distance meter on the second supporting plate;
the distance meter is used for measuring the distance between the second supporting plate and the first supporting plate and sending the distance to the controller;
the controller is further used for receiving the distance, controlling the motor to rotate at a first rotating speed when the distance is greater than a first preset distance, and controlling the motor to rotate at a second rotating speed when the distance is less than a second preset distance, wherein the first preset distance is greater than the second preset distance.
Optionally, a first limiting block and a second limiting block are arranged at the second end of the first supporting rod,
the first limiting block is arranged at the top of the first supporting rod, the second limiting block is arranged below the first supporting plate, and the first supporting plate slides between the first limiting block and the second limiting block;
the device further comprises: the first support rod is sleeved with the first elastic piece between the first limiting block and the first support plate.
Optionally, the method further includes: a pressure sensor;
the pressure sensor is arranged at the part of the fixed electrode, which is contacted with the first supporting plate, and/or the pressure sensor is arranged at the part of the movable electrode, which is contacted with the second supporting plate;
the pressure sensor is connected with the controller and used for sending the detected pressure value to the controller;
the controller is further configured to send a third moving instruction to the moving mechanism when the pressure value is greater than or equal to a preset pressure value, so that the moving electrode is far away from the fixed electrode.
Optionally, the method further includes: a third support bar disposed between the first support plate and the second support plate;
the length of the third supporting rod is greater than the sum of the lengths of the fixed electrode and the movable electrode;
the first end of the third supporting rod is fixedly connected with the second supporting plate;
a third limiting block and a fourth limiting block are arranged at the second end of the third supporting rod,
the third limiting block is arranged at the top of the third supporting rod, the fourth limiting block is arranged below the third supporting plate, and the second supporting plate slides between the third limiting block and the fourth limiting block;
the device further comprises: and the second elastic part is sleeved on the third supporting rod and is arranged between the third limiting block and the first supporting plate.
Optionally, the method further includes: a resistance;
one end of the resistor is connected with the fixed electrode, and the other end of the resistor is connected with the movable electrode;
the voltage detection interface is arranged at two ends of the resistor.
Optionally, the method further includes: a display;
the display is connected with the controller and used for displaying the first temperature value.
Optionally, the method further includes: the input device is used for acquiring the preset experiment times input by the user and sending the preset experiment times to the controller;
the controller is further used for receiving the preset experiment times, counting the experiment times after one arc experiment is finished, and finishing the arc experiment when the experiment times are equal to the preset experiment times.
In a second aspect, an embodiment of the present application provides a simulated fault arc generation system, including: a power supply, a switching relay, a load and the simulated fault arc generating device according to the first aspect connected in series in sequence;
further comprising: the power supply voltage detector is arranged at a voltage detection port of the simulated fault arc generation device;
the switch relay is used for controlling the on and off of the power supply;
the simulated fault arc generating device is used for acquiring a first temperature value at the contact surface of the movable electrode and the fixed electrode, acquiring the experiment times input by a user, controlling the fixed electrode, the movable electrode and the moving mechanism to perform an arc experiment, and performing the next arc experiment when the first temperature value is smaller than a first preset temperature value after the first arc experiment is finished;
and the voltage detector is used for detecting the voltages at two ends of the fixed electrode and the movable electrode and judging whether an electric arc is generated.
In a third aspect, an embodiment of the present application provides a method for detecting occurrence of a simulated fault arc, including:
collecting a first temperature value at the contact surface of the movable electrode and the fixed electrode;
controlling the fixed electrode, the movable electrode and the moving mechanism to perform an arc experiment, and performing the next arc experiment when the first temperature value is less than a first preset temperature value after the first arc experiment is finished;
and when the arc experiment is carried out, detecting the voltages at two ends of the fixed electrode and the movable electrode, and judging whether the arc is generated.
In a fourth aspect, an embodiment of the present application provides an electronic device, including: the system comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
the memory for storing a computer program;
the processor is configured to execute the program stored in the memory to implement the simulated fault arc occurrence detection method according to the third aspect.
In a fifth aspect, the present application provides a computer-readable storage medium, which stores a computer program, and the computer program, when executed by a processor, implements the simulated fault arc occurrence detection method according to the third aspect.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: the device provided by the embodiment of the application comprises a fixed electrode, a fixed support, a movable electrode, a moving mechanism, a controller, a temperature collector and a voltage detection interface, wherein the temperature collector collects a first temperature value at the contact surface of the movable electrode and the fixed electrode; in addition, the voltage detection interface used for being connected with the voltage detector is arranged, so that the voltages at the two ends of the fixed electrode and the movable electrode are detected through the voltage detector, whether the electric arc is generated or not is judged, a user can conveniently detect the electric arc through the voltage detector, and the safety of the experimental process is improved; in addition, the controller automatically controls the moving mechanism, the moving electrode and the fixed electrode to perform an arc experiment, so that the automation degree is high.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
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 for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a block diagram of a simulated fault arc generator according to an embodiment of the present disclosure;
FIG. 2 is a block diagram of a simulated fault arc generation device according to another embodiment of the present application;
FIG. 3 is a block diagram of a simulated fault arc generation device according to yet another embodiment of the present application;
FIG. 4 is a block diagram of a simulated fault arc generation device according to yet another embodiment of the present application;
FIG. 5 is a block diagram of a simulated fault arc generation device according to yet another embodiment of the present application;
FIG. 6 is a graph illustrating voltage and current changes before and after an arc occurs in a simulated fault arc generator according to yet another embodiment of the present application;
FIG. 7 is a block diagram of a simulated fault arc generation system provided in accordance with yet another embodiment of the present application;
FIG. 8 is a flow chart of a simulated fault arc occurrence detection method provided in an embodiment of the present application;
FIG. 9 is a flow chart of a simulated fault arc occurrence detection method according to another embodiment of the present application;
fig. 10 is a block diagram of an electronic device according to an embodiment of the present application.
Reference numerals: a fixed electrode-1, a fixed support-2, a movable electrode-3, a moving mechanism-4, a temperature collector-5, a controller-6, a voltage detection interface-7, a first limit block-8, a second limit block-9, a first elastic part-10, a base-11, a first support plate-12, a first support rod-13, a motor-14, a second support rod-15, a second support plate-16, a third support rod-17, a third limit block-18, a fourth limit block-19, a second elastic part-20, a distance meter-21, a pressure sensor-22, a resistor-23, a display-24, an input device-25, a power interface-26, a support-27, an insulating block-28, a power supply-29, a power supply-28, a temperature sensor-14, a voltage detection interface-7, a first limit block-8, a switch relay-30, a load-31 and a simulated fault arc generating device-32.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In an embodiment of the present application, a simulated fault arc generator is provided, as shown in fig. 1, the simulated fault arc generator includes: the device comprises a fixed electrode 1, a fixed support 2, a movable electrode 3, a moving mechanism 4, a temperature collector 5, a controller 6 and a voltage detection interface 7. Wherein the content of the first and second substances,
the fixed electrode is supported and fixed by the fixed support.
And the moving electrode is arranged opposite to the fixed electrode, and one end of the moving electrode opposite to the fixed electrode is arranged as a tip.
And the temperature collector is used for collecting a first temperature value at the contact surface of the movable electrode and the fixed electrode.
And the controller is used for receiving the first temperature value sent by the temperature collector, controlling the fixed electrode, the movable electrode and the moving mechanism to perform an arc experiment, and performing the next arc experiment when the first temperature value is smaller than a first preset temperature value after the arc experiment is finished.
Specifically, a temperature collector is adopted to collect the temperature of the contact surface of the two electrodes, and when the temperature exceeds a set value, the power is automatically cut off to protect the electrodes from being damaged; meanwhile, in order to simulate a real environment, after each experiment, the temperature is reduced to a first preset temperature value, and then the next experiment is started, so that the influence of the electrode residual temperature on arc data is avoided.
And the voltage detection interface is used for connecting the voltage detector so as to detect the voltages at two ends of the fixed electrode and the movable electrode through the voltage detector and judge whether the electric arc is generated.
In some embodiments, the fixing bracket comprises: a base 11, a first support plate 12 and a first support rod 13. The moving mechanism includes: a motor 14, a second support bar 15, and a second support plate 16.
Specifically, referring to fig. 1, a first end of the first support rod is fixedly connected to the base, and a second end of the first support rod is slidably connected to the first support plate; the fixed electrode is fixed on the first supporting plate.
One end of the first supporting rod is fixedly connected with the motor, and the other end of the first supporting rod is rotatably connected with the second supporting plate; the motor is connected with the controller and used for receiving the first moving instruction and driving the second supporting rod to rotate; the movable electrode is fixedly arranged on the second support plate; the second supporting plate is provided with a through hole, and the second supporting plate slides on the first supporting rod through the through hole.
So, after the motor begins to rotate, drive the second bracing piece rotatory, because swivelling joint between second bracing piece and the second backup pad, because sliding connection between first bracing piece and the second backup pad again to make the second backup pad rebound, and then make the removal electrode of fixing in the second backup pad move to fixed electrode direction, thereby the contact produces electric arc.
The motor may be, but is not limited to, a servo motor or a stepping motor, the temperature collector may be an infrared thermometer, and the first preset temperature value may be room temperature or a temperature higher than the room temperature by a fixed difference, for example, a temperature value 2 degrees higher than the room temperature.
The second support rod and the second support plate can be connected in a rotating mode through threads, but not limited to.
Further, referring to fig. 2, a first limiting block 8 and a second limiting block 9 are arranged at a second end of the first support rod, the first limiting block is arranged at the top of the first support rod, the second limiting block is arranged below the first support plate, and the first support plate slides between the first limiting block and the second limiting block;
the device still includes: and the first elastic part 10 is sleeved on the first supporting rod and is arranged between the first limiting block and the first supporting plate.
Specifically, in order to ensure that the movable electrode is in contact with the fixed electrode, certain buffering is provided, the fixed electrode is prevented from being damaged due to the fact that the movable electrode moves in an overlarge size, and the fixed electrode is protected. In this embodiment, first backup pad can slide on first support column, and the second stopper guarantees that first backup pad can not slide like gliding, and first elastic component can stretch out and draw back. When the movable electrode contacts with the fixed electrode, if the movable electrode continues to move towards the fixed electrode, the first supporting plate drives the spring to force the spring to compress, and when the movable electrode is separated from the fixed electrode, the spring is restored to drive the first supporting plate to return to the original position.
Further, referring to fig. 3, in order to make the first supporting plate more stable when sliding upward, the simulated fault arc generating device of the present embodiment further includes a third supporting rod 17 disposed between the first supporting plate and the second supporting plate;
the length of the third supporting rod is greater than the sum of the lengths of the fixed electrode and the movable electrode;
the first end of the third supporting rod is fixedly connected with the second supporting plate;
a third limiting block 18 and a fourth limiting block 19 are arranged at the second end of the third supporting rod;
the third limiting block is arranged at the top of the third supporting rod, the fourth limiting block is arranged below the third supporting plate, and the second supporting plate slides between the third limiting block and the fourth limiting block;
the device still includes: and the second elastic part 20 is sleeved on the third supporting rod and is arranged between the third limiting block and the first supporting plate.
Specifically, the effect of the third support rod, the third limiting block, the fourth limiting block and the second elastic element can refer to the first limiting block, the second limiting block and the first elastic element in the related embodiments, and the description is omitted here.
It should be noted that the first limiting block 8, the second limiting block 9, the first elastic element 10, the base 11, the first supporting plate 12, the first supporting rod 13, the second supporting rod 15, the second supporting plate 16, the third supporting rod 17, the third limiting block 18, the fourth limiting block 19, and the second elastic element 20 are all made of insulating materials.
In some embodiments, the controller is specifically configured to:
sending a first moving instruction to the moving mechanism so that the moving mechanism moves the moving electrode after receiving the first moving instruction and the moving electrode is contacted with the fixed electrode;
and after the movable electrode is contacted with the fixed electrode, sending a second movement instruction to the moving mechanism, so that the moving mechanism moves the movable electrode after receiving the second movement instruction, the movable electrode is far away from the fixed electrode, an electric arc is generated between the movable electrode and the fixed electrode, and when the first temperature value is smaller than the first preset temperature value, carrying out the next electric arc experiment.
The first moving instruction is a motor forward rotating instruction to enable the second supporting plate to move upwards, the second moving instruction is a motor reverse rotating instruction to enable the second supporting plate to move downwards, and electric arcs are generated when the fixed electrode is separated from the moving electrode.
Further, the controller is further configured to:
after an electric arc is generated between the movable electrode and the fixed electrode, acquiring a second temperature value acquired by the temperature acquisition device, and judging whether the second temperature value is greater than a second preset temperature value or not;
if the current position is larger than the preset value, a second moving instruction is sent to the moving mechanism;
if not, judging whether the tripping is successful;
and recording the number of times of tripping success and/or tripping failure, and sending a second moving instruction to the moving mechanism.
Specifically, after the arc is generated, the temperature of the electrode rises along with the arc, in the embodiment, a second temperature value at the electrode when the arc occurs is collected, whether the second temperature value exceeds a second preset temperature value is judged, and when the second temperature value is greater than the second preset temperature value, the controller sends a second moving instruction to the moving mechanism so as to separate the moving electrode from the fixed electrode, end the fault arc phenomenon, and avoid the electrode temperature from being too high and damaging the electrode due to the long-time arc fault phenomenon; and when the second temperature value is not greater than the second preset temperature value, judging whether tripping is successful or not, and recording the times of tripping success and tripping failure.
And judging whether the tripping is successful or not can be judged by detecting whether the voltage exists in the voltage detection interface or not. If the tripping is successful, the secondary current loop is in a disconnected state, so that the voltage detection port has no voltage, otherwise, the tripping fails. The voltage value of the voltage detection interface can be detected by the voltage detector and then sent to the controller, or the voltage detection module is arranged on the voltage detection interface and is used for detecting the voltage and then sending the voltage to the controller.
In some embodiments, the simulated fault arc generation apparatus further comprises: arranging a distance meter 21 on the second support plate, wherein the distance meter is used for measuring the distance between the second support plate and the first support plate and sending the distance to the controller;
the controller is further used for receiving the distance, controlling the motor to rotate at a first rotating speed when the distance is larger than a first preset distance, and controlling the motor to rotate at a second rotating speed when the distance is smaller than a second preset distance, wherein the first preset distance is larger than the second preset distance.
Specifically, by providing the distance meter, the distance between the two support plates where the fixed electrode and the movable electrode are located is detected (the distance between the two electrodes can be equivalently determined). The controller sends a first moving instruction to the motor, the first moving instruction comprises the rotating speed of the motor and the rotating direction of the motor, and when the distance between the two supporting plates is greater than a first preset distance, the motor is driven to rotate forwards at the first rotating speed, so that the moving electrode is enabled to be close to the fixed electrode quickly; when the distance is smaller than the second preset distance, the motor rotates forwards at the second rotating speed, so that the movable electrode slowly approaches the fixed electrode.
The first rotation speed is greater than the second rotation speed, and the first preset distance may be set according to an actual situation, which is not limited herein.
In some embodiments, the simulated fault arc generation apparatus described with reference to fig. 4 further comprises: a pressure sensor 22; the pressure sensor is arranged at the part of the fixed electrode, which is contacted with the first support plate, and/or the pressure sensor is arranged at the part of the movable electrode, which is contacted with the second support plate;
the pressure sensor is connected with the controller and used for sending the detected pressure value to the controller;
and the controller is also used for sending a third moving instruction to the moving mechanism when the pressure value is greater than or equal to the preset pressure value so as to enable the moving electrode to be far away from the fixed electrode.
Specifically, pressure sensor puts the one end at fixed electrode (or puts the one end at the movable electrode), when the most advanced touch fixed electrode of movable electrode, will produce pressure, and then pressure sensor will produce the pressure value, and the controller is through judging the pressure value size, alright in order to judge whether the movable electrode contacts fixed electrode. Through comparing the pressure value with the preset pressure value, when the pressure value is greater than or equal to the preset pressure value, a third moving instruction is sent to the moving mechanism, the electrode is made to rotate reversely, the moving electrode is far away from the fixed electrode, and damage to the fixed electrode due to overlarge pressure is avoided.
In fig. 4, for example, a pressure sensor is disposed at a fixed electrode, a bracket 27 may be disposed on the first support plate, the fixed electrode is fixed by the bracket, and the pressure sensor is disposed between the bracket and the fixed electrode, thereby sensing pressure. Preferably, an insulating block 28 may be disposed between the pressure sensor and the fixed electrode, so as to ensure safety in use.
The third moving instruction comprises control electrode reverse rotation and a third rotating speed, wherein the third rotating speed can be set according to actual conditions.
In the application, the simulated fault arc generating device adopts a three-dimensional design, so that the occupied space is reduced.
In some embodiments, referring to fig. 5, the simulated fault arc generation apparatus further comprises: a resistor 23, wherein one end of the resistor is connected with the fixed electrode, and the other end is connected with the movable electrode;
the voltage detection interface is arranged at two ends of the resistor.
Specifically, two ends of the electrode are connected in parallel with an electric poleThe resistance judges whether the arc phenomenon occurs or not by detecting the voltage at the two ends of the resistance, and can accurately position the occurrence moment of the arc. Referring to fig. 6a, in normal condition (when no fault arc occurs): the voltage that flows through the resistor R is a stable value I1, so that the voltage U1I 1R detected by the voltage detection interface is a stable and unchangeable voltage value; referring to fig. 6b, when a fault arc occurs, a variable value flows through the resistor, so that the voltage U2 detected by the voltage detection interface is I2RAnd are,RAnd areR1/(R + R1), when the arc generator is contacted at both ends, it is equivalent to a resistor R, which is connected in parallel with R1 (equivalent resistor of fixed electrode and moving electrode), and a parallel resistor RAnd areWhen the current is increased below R and the arc is generated, the current is very unstable with the time of the arc, and thus the measured voltage becomes an unstable voltage value (a spike phenomenon).
The resistor can be a resistor with a fixed resistance value or a resistor with a variable resistance value.
In some embodiments, the simulated fault arc generation apparatus further comprises: a display 24; the display is connected with the controller and used for displaying the first temperature value.
Through setting up the display, the user can the current temperature in the audio-visual observation room. It is understood that the display may display all temperatures collected by the temperature collector.
In some embodiments, the simulated fault arc generation apparatus further comprises: the input device 25 is used for acquiring the preset experiment times input by the user and sending the preset experiment times to the controller; and the controller is also used for receiving the preset experiment times, counting the experiment times after one arc experiment is finished, and finishing the arc experiment when the experiment times are equal to the preset experiment times.
Specifically, the simulation fault arc generating device automatically performs multiple experiments by setting the preset experiment times, so that automatic control is realized. When the AFCI detection device is used for experimental test, the times of successful tripping and false tripping can be detected according to the set experimental times, the subjectivity of realizing the generation of electric arc and the generation of electric arc once manually is avoided, and the AFCI detection device is safer and more convenient to apply.
The input unit may be, but is not limited to, a numeric keypad. The preset experiment times can be set according to actual conditions, and are not limited herein.
It can be understood that the first preset temperature value and the second preset temperature value can be set through the input device.
Based on the same concept, the embodiment of the present application provides a system for simulating the occurrence of a fault arc, and the specific implementation of the system may refer to the description of the embodiment of the apparatus, and repeated descriptions are omitted, as shown in fig. 7, the system mainly includes: a power supply 29, a switching relay 30, a load 31, and a simulated fault arc generating device 32 in the above embodiment, which are connected in series in this order;
further comprising: the power supply voltage detector is arranged at a voltage detection port of the simulated fault arc generation device;
the switch relay is used for controlling the on and off of the power supply;
the simulated fault arc generating device is used for acquiring a first temperature value at the contact surface of the movable electrode and the fixed electrode, acquiring the experiment times input by a user, controlling the fixed electrode, the movable electrode and the moving mechanism to perform an arc experiment, and performing the next arc experiment when the first temperature value is smaller than a first preset temperature value after the arc experiment is finished;
and the voltage detector is used for detecting the voltages at two ends of the fixed electrode and the movable electrode and judging whether an electric arc is generated or not.
Specifically, after the two electrodes are contacted, the switch relay is electrified, at the moment, the current returns to the negative pole of the power supply through the load and the movable electrode and the fixed electrode of the simulated fault arc generating device, and at the moment, the motor rotates slowly in the reverse direction to generate an arc phenomenon.
It will be appreciated that a power interface 26 may be provided on the simulated fault arc generation device to connect to a power source. Wherein, power source interface connects the 220V power, and power source interface series connection switch relay simultaneously, switches on and cuts off the power supply for the arc generator through the switch of relay, and when the switch relay is closed, the load just circular telegram, otherwise does not have the electricity. The power interface may be, but is not limited to, a terminal block, so as to improve the safety of the experiment.
The simulated fault arc generation device and the simulated fault arc generation system can have the following beneficial effects without limitation through the arrangement:
an infrared temperature thermometer is adopted to detect the temperature of the contact point of the two electrodes, and when the temperature exceeds a set value, the power is automatically cut off to protect the contact point from being damaged; meanwhile, in order to simulate a real environment, after each experiment, the temperature is reduced to a first preset temperature, and then the next experiment is started, so that the influence of the electrode residual temperature on arc data is avoided;
the pressure sensor is adopted to sense the contact force of the two electrodes, so that the control of the displacement of the movable electrode is realized; meanwhile, with the increase of the contact times of the electrodes, the fixed electrode is worn (the tip of the movable electrode pricks a small recess on the fixed electrode), and after the pressure sensor is adopted, the contact degree can be realized according to the setting of the pressure value, so that the inconsistency of the contact of the two electrodes after the experiment times are increased is avoided (if the movable electrode is only set with a fixed displacement, the contact effect is poor along with the time lapse);
the automatic control can be realized, when the experimental test of the AFCI detection device is carried out, the times of successful tripping and false tripping can be detected according to the set experimental times, and the generation of electric arcs and the subjectivity of generating the electric arcs which are manually realized at one time are avoided (the existing equipment is separated from a fixed electrode by manually driving a movable electrode to move through rotation, so that a fault electric arc is generated);
the fixed end of the fixed electrode adopts a buffer design (an elastic part is added), so that the service life of the electrode is prolonged;
the space occupation is reduced by adopting a three-dimensional design;
the power supply of the device adopts the connection of the terminal block, thereby improving the safety of the experiment.
Based on the same concept, the embodiment of the application provides a method for detecting the occurrence of the simulated fault arc, the specific implementation of the method can refer to the description of the embodiment part of the method, repeated parts are not repeated, and the method can be applied to any form of electronic equipment, such as a mobile terminal and a PC terminal. As shown in fig. 8, the method includes:
And step 802, controlling the fixed electrode, the movable electrode and the moving mechanism to perform an arc experiment, and performing the next arc experiment when the first temperature value is smaller than a first preset temperature value after the first arc experiment is finished.
In one embodiment, referring to fig. 9, the simulated fault arc occurrence detection method includes the steps of:
a first preset temperature T0 is obtained.
And judging whether a key control signal exists or not.
If yes, acquiring the experiment times N0 input by the user; otherwise, whether the key control signal exists is judged again.
It is determined whether the first temperature value T1 is less than T0.
If yes, detecting a distance D0; otherwise, a return or re-determination is made as to whether T1 is less than T0.
And judging whether D0 is greater than the preset distance D1.
If yes, the motor is controlled to rotate forwards at the first rotating speed, and if not, the motor is controlled to rotate forwards at the second rotating speed.
And judging whether the pressure value is larger than a first preset pressure value or not.
If so, judging whether the pressure value is smaller than a second preset pressure value, otherwise, controlling the motor to rotate forwards at a third rotating speed;
if yes, the switch relay is closed.
And controlling the motor to rotate reversely.
And judging whether the voltage detection interface has a voltage signal or not.
If yes, the arc is determined to occur, and if not, whether a voltage signal exists is judged again.
And judging whether the second temperature value is greater than a second preset temperature.
If so, controlling the motor to reversely rotate and disconnecting the switch relay; if not, judging whether a tripping signal exists or not, and recording the times of tripping success and tripping failure.
And judging whether the experiment times are equal to the preset experiment times or not.
If so, outputting the total times of tripping success and tripping failure and finishing; if not, returning.
For the specific implementation of the above process, reference may be made to the specific embodiment of the simulated fault arc generation apparatus or system, which is not described herein again.
Based on the same concept, an embodiment of the present application provides an electronic device, as shown in fig. 10, the electronic device mainly includes: a processor 1001, a communication interface 1002, a memory 1003 and a communication bus 1004, wherein the processor 1001, the communication interface 1002 and the memory 1003 communicate with each other via the communication bus 1004. The memory 1003 stores a program executable by the processor 1001, and the processor 1001 executes the program stored in the memory 1003, so as to implement the following steps:
collecting a first temperature value at the contact surface of the movable electrode and the fixed electrode;
controlling the fixed electrode, the movable electrode and the moving mechanism to perform an arc experiment, and performing the next arc experiment when a first temperature value is less than a first preset temperature value after the first arc experiment is finished;
when an arc experiment is carried out, the voltages at the two ends of the fixed electrode and the movable electrode are detected, and whether an arc is generated or not is judged.
The communication bus 1004 mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus 1004 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 10, but this is not intended to represent only one bus or type of bus.
The communication interface 1002 is used for communication between the electronic apparatus and other apparatuses.
The Memory 1003 may include a Random Access Memory (RAM) or a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. Alternatively, the memory may be at least one storage device located remotely from the aforementioned processor 1001.
The Processor 901 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc., and may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, and discrete hardware components.
In yet another embodiment of the present application, there is also provided a computer-readable storage medium having stored therein a computer program, which, when run on a computer, causes the computer to execute the simulated fault arc occurrence detection method described in the above embodiment.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wirelessly (e.g., infrared, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The available media may be magnetic media (e.g., floppy disks, hard disks, tapes, etc.), optical media (e.g., DVDs), or semiconductor media (e.g., solid state drives), among others.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (16)
1. A simulated fault arc generation device, comprising:
a fixed electrode;
the fixed support is used for supporting and fixing the fixed electrode;
a movable electrode disposed opposite to the fixed electrode;
a moving mechanism for controlling the moving electrode to move;
the temperature collector is used for collecting a first temperature value at the contact surface of the movable electrode and the fixed electrode;
the controller is used for receiving a first temperature value sent by the temperature collector, controlling the fixed electrode, the movable electrode and the moving mechanism to perform an arc experiment, and performing the next arc experiment when the first temperature value is smaller than a first preset temperature value after the arc experiment is finished;
and the voltage detection interface is used for connecting a voltage detector so as to detect the voltages at two ends of the fixed electrode and the movable electrode through the voltage detector and judge whether an electric arc is generated.
2. A simulated fault arc generating device as claimed in claim 1, wherein said controller is configured to:
sending a first moving instruction to the moving mechanism, so that the moving mechanism moves the moving electrode after receiving the first moving instruction, and the moving electrode is made to contact with the fixed electrode;
and after the movable electrode is contacted with the fixed electrode, sending a second movement instruction to the moving mechanism so that the moving mechanism moves the movable electrode after receiving the second movement instruction, so that the movable electrode is far away from the fixed electrode, an electric arc is generated between the movable electrode and the fixed electrode, and when the first temperature value is smaller than the first preset temperature value, carrying out the next electric arc experiment.
3. A simulated fault arc generating device as claimed in claim 2, wherein said controller is configured to:
after an electric arc is generated between the movable electrode and the fixed electrode, a second temperature value acquired by the temperature acquisition unit is acquired;
judging whether the second temperature value is greater than a second preset temperature value or not;
if so, sending the second moving instruction to the moving mechanism;
if not, judging whether the tripping is successful;
and recording the number of times of tripping success and/or tripping failure, and sending a second moving instruction to the moving mechanism.
4. A simulated fault arc generating device according to claim 2, wherein said fixed support comprises: the support device comprises a base, a first support plate and a first support rod;
the first end of the first supporting rod is fixedly connected with the base, and the second end of the first supporting rod is slidably connected with the first supporting plate;
the fixed electrode is fixed on the first supporting plate.
5. The simulated fault arc generation device of claim 4, wherein said moving mechanism comprises: the motor, the second support rod and the second support plate;
one end of the first supporting rod is fixedly connected with the motor, and the other end of the first supporting rod is rotatably connected with the second supporting plate;
the motor is connected with the controller and used for receiving the first moving instruction and driving the second supporting rod to rotate;
the movable electrode is fixedly arranged on the second support plate;
the second supporting plate is provided with a through hole, and the second supporting plate slides on the first supporting rod through the through hole.
6. The simulated fault arc generation device of claim 5, further comprising: arranging a distance meter on the second supporting plate;
the distance meter is used for measuring the distance between the second supporting plate and the first supporting plate and sending the distance to the controller;
the controller is further used for receiving the distance, controlling the motor to rotate at a first rotating speed when the distance is greater than a first preset distance, and controlling the motor to rotate at a second rotating speed when the distance is less than a second preset distance, wherein the first preset distance is greater than the second preset distance.
7. The simulated-fault arc generating device as claimed in claim 4, wherein the second end of the first supporting rod is provided with a first stopper and a second stopper,
the first limiting block is arranged at the top of the first supporting rod, the second limiting block is arranged below the first supporting plate, and the first supporting plate slides between the first limiting block and the second limiting block;
the device further comprises: the first support rod is sleeved with the first elastic piece between the first limiting block and the first support plate.
8. The simulated fault arc generation device of claim 5, further comprising: a pressure sensor;
the pressure sensor is arranged at the part of the fixed electrode, which is contacted with the first supporting plate, and/or the pressure sensor is arranged at the part of the movable electrode, which is contacted with the second supporting plate;
the pressure sensor is connected with the controller and used for sending the detected pressure value to the controller;
the controller is further configured to send a third moving instruction to the moving mechanism when the pressure value is greater than or equal to a preset pressure value, so that the moving electrode is far away from the fixed electrode.
9. The simulated fault arc generation device of claim 5, further comprising: a third support bar disposed between the first support plate and the second support plate;
the length of the third supporting rod is greater than the sum of the lengths of the fixed electrode and the movable electrode;
the first end of the third supporting rod is fixedly connected with the second supporting plate;
a third limiting block and a fourth limiting block are arranged at the second end of the third supporting rod,
the third limiting block is arranged at the top of the third supporting rod, the fourth limiting block is arranged below the third supporting plate, and the second supporting plate slides between the third limiting block and the fourth limiting block;
the device further comprises: and the second elastic part is sleeved on the third supporting rod and is arranged between the third limiting block and the first supporting plate.
10. The simulated fault arc generation device of claim 1, further comprising: a resistance;
one end of the resistor is connected with the fixed electrode, and the other end of the resistor is connected with the movable electrode;
the voltage detection interface is arranged at two ends of the resistor.
11. The simulated fault arc generation device of claim 1, further comprising: a display;
the display is connected with the controller and used for displaying the first temperature value.
12. The simulated fault arc generation device of claim 1, further comprising: the input device is used for acquiring the preset experiment times input by the user and sending the preset experiment times to the controller;
the controller is further used for receiving the preset experiment times, counting the experiment times after one arc experiment is finished, and finishing the arc experiment when the experiment times are equal to the preset experiment times.
13. A simulated fault arc generation system, comprising: a power supply, a switching relay, a load and a simulated fault arc generation device as claimed in any one of claims 1 to 12 connected in series in sequence;
further comprising: the power supply voltage detector is arranged at a voltage detection port of the simulated fault arc generation device;
the switch relay is used for controlling the on and off of the power supply;
the simulated fault arc generating device is used for acquiring a first temperature value at the contact surface of the movable electrode and the fixed electrode, acquiring the experiment times input by a user, controlling the fixed electrode, the movable electrode and the moving mechanism to perform an arc experiment, and performing the next arc experiment when the first temperature value is smaller than a first preset temperature value after the first arc experiment is finished;
and the voltage detector is used for detecting the voltages at two ends of the fixed electrode and the movable electrode and judging whether an electric arc is generated.
14. A simulated fault arc occurrence detection method is characterized by comprising the following steps:
collecting a first temperature value at the contact surface of the movable electrode and the fixed electrode;
controlling the fixed electrode, the movable electrode and the moving mechanism to perform an arc experiment, and performing the next arc experiment when the first temperature value is less than a first preset temperature value after the first arc experiment is finished;
and when the arc experiment is carried out, detecting the voltages at two ends of the fixed electrode and the movable electrode, and judging whether the arc is generated.
15. An electronic device, comprising: the system comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
the memory for storing a computer program;
the processor, executing the program stored in the memory, implements the simulated fault arc occurrence detection method of claim 14.
16. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the simulated fault arc occurrence detection method according to claim 14.
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