Graph visualization high-voltage circuit breaker anti-tripping test monitoring system and device

Abstract

The invention provides a graph visualization high-voltage circuit breaker anti-tripping test monitoring system and device, and belongs to the technical field of electric power high-voltage circuit breakers. The system is composed of a graphic visualization high-voltage circuit breaker anti-tripping test monitoring device and a tablet personal computer, and the graphic visualization high-voltage circuit breaker anti-tripping test monitoring device comprises a central processing unit, a 4G communication module, an analog-to-digital conversion module, a time delay relay SJ1, a time delay relay SJ2 and a direct-current power supply module. Graph visualization detection analysis software is arranged in the tablet computer. Through one-button operation, visual detection and dynamic analysis, automatic control, visual data display and real-time abnormity monitoring of the test are realized, the detection efficiency is remarkably improved, the human input is reduced, automatic power off is realized when the test fails, and the equipment safety is ensured.

Description

Technical Field

[0001] The invention provides a graphic visualization high-voltage circuit breaker anti-trip test monitoring system and device, belonging to the technical field of electric high-voltage circuit breakers. Background Art

[0002] High-voltage circuit breakers are key equipment used to isolate fault points in power networks and protect the safety of power systems. High-voltage circuit breaker anti-tripping is an important circuit to prevent the circuit breaker from jumping "close-open-close-open..." when the energy storage conditions are met due to the adhesion of the closing contacts and the continuous existence of the opening command of the relay protection device when the high-voltage circuit breaker is closed on a permanent fault. The existence of the anti-tripping circuit disconnects the closing circuit and reliably locks the high-voltage circuit breaker in the opening state at the moment of closing the high-voltage circuit breaker after the fault, avoiding the occurrence of the "jumping" phenomenon, thereby reducing the number of fault current impacts on the power network and effectively preventing the further expansion of the scope of the fault power outage. The implementation method of the anti-tripping function is relatively complex and requires the cooperation of a variety of different components. The anti-tripping test can ensure that the high-voltage circuit breaker can respond quickly and isolate accurately under actual working conditions.

[0003] The traditional manual anti-trip test has the following shortcomings: 1. Manual closing requires temporarily short-circuiting the five protections and continuously manually twisting the switch operating handle to the closing command state, which cannot ensure that the closing command is always continuously output; 2. The closing time of the high-voltage circuit breaker is about 60ms, and the opening time is about 35ms. During the test, the closing and opening phenomena are short-lived and difficult to distinguish by naked eye observation or sound.

[0004] Therefore, in view of this, the existing structure is studied and improved, and a graphic visualization high-voltage circuit breaker anti-trip test monitoring system and device are proposed to solve the above-mentioned problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is a graphical visualization high-voltage circuit breaker anti-trip test monitoring system and device, which realizes automatic control of the test, intuitive display of data and real-time abnormality monitoring through one-button operation, visual detection and dynamic analysis, significantly improves detection efficiency, reduces manpower input, and automatically cuts off power when the test fails to ensure equipment safety.

[0006] In order to solve the above problems, the present invention proposes a technical solution: a graphic visualization high-voltage circuit breaker anti-trip test monitoring system and device, the system includes a graphic visualization high-voltage circuit breaker anti-trip test monitoring device and a tablet computer, the graphic visualization high-voltage circuit breaker anti-trip test monitoring device includes a central processing unit, a 4G communication module, an analog-to-digital conversion module, a delay relay SJ1, a delay relay SJ2, and a DC power supply module, and the tablet computer has built-in graphic visualization detection and analysis software.

[0007] Furthermore, the central processing unit is responsible for controlling the entire device, receiving instructions from the tablet computer, controlling the action of the relay, and processing sensor data; the 4G communication module realizes wireless communication between the device and the tablet computer, and transmits control instructions and test data; the analog-to-digital conversion module converts the analog signal collected by the current sensor into a digital signal for processing by the central processing unit; the delay relay SJ1 and the delay relay SJ2 are used to simulate the timing conditions in the test and control the on and off of the opening and closing circuits.

[0008] Furthermore, the DC power supply module provides the power required for the test and can immediately disconnect the power supply to protect the equipment when the test fails; the current sensor is installed in a non-series manner and detects the current in the opening and closing circuits through the Hall effect principle.

[0009] Furthermore, the tablet computer has built-in graphic visualization detection and analysis software for sending test instructions, receiving and displaying test data, and performing data analysis and result judgment.

[0010] Furthermore, the graphic visualization high-voltage circuit breaker anti-tripping test monitoring device connects a 220V DC power supply and two delay relay contacts SJ1 and SJ2 to the opening circuit and closing circuit through a test line. SJ1 should cross the five-protection coding lock and the opening switch handle and be connected to the closing circuit outlet of the measurement and control device; SJ1 should cross the tripping outlet contact and the tripping outlet pressure plate of the protection device and be connected to the upper end of the tripping outlet pressure plate.

[0011] Furthermore, the two current sensors in the graphic visualization high-voltage circuit breaker anti-trip test monitoring device are mainly used to detect the current during the opening and closing action of the high-voltage circuit breaker. Based on high-speed acquisition technology, a non-series wiring mode is adopted, and the Hall current detection principle is utilized. When the current passes through the opening and closing circuit, a magnetic field perpendicular to the current direction is generated; acting on the Hall element, by measuring the size of the Hall potential difference, the current size passing through the opening and closing circuit can be calculated, and the current during the opening and closing action of the high-voltage circuit breaker is collected by induction. Multi-point acquisition is performed based on the action time, providing multi-point data for the detection and analysis system and providing support for generating curves.

[0012] Furthermore, when the central processor receives the start instruction of the split-position anti-trip test from the tablet computer through the 4G communication module, the high-voltage circuit breaker should be in the open state, the SJ1 contact is closed and does not return, the closing circuit of the high-voltage circuit breaker is turned on, the closing coil is energized to close, and the closing current sensor senses the current and transmits the data back to the tablet computer; after 70ms, the SJ2 contact is closed and does not return, the closing circuit of the high-voltage circuit breaker is disconnected, the opening circuit is turned on, and the opening coil is energized to open, and the corresponding opening current sensor senses the current and transmits the data back to the tablet computer until the current disappears after the switch is opened; due to S J1 and SJ2 have not returned yet, that is, the opening and closing commands of the high-voltage circuit breaker have not disappeared. At this time, if the anti-tripping test is correct, the closing circuit of the high-voltage circuit breaker is disconnected by the anti-tripping relay contact FJ. After the energy storage is completed, the high-voltage circuit breaker should continue to remain in the open state and cannot be closed. The closing current sensor will not feel the current again, and it is judged that the high-voltage circuit breaker position anti-tripping test is correct; if after the high-voltage circuit breaker completes the energy storage, the closing current sensor feels the current again, that is, the circuit breaker is closed again, it is judged that the high-voltage circuit breaker position anti-tripping test has failed. At this time, the DC power supply module is immediately disconnected to prevent the closing coil from burning.

[0013] Furthermore, when the central processing unit receives the start instruction of the closing anti-trip test from the tablet computer through the 4G communication module, the high-voltage circuit breaker should be in the closed state, the SJ1 contact is closed and does not return, and the SJ2 contact is closed and does not return after 5ms, the high-voltage circuit breaker opening circuit is turned on, the opening coil is energized for opening, and the opening current sensor senses the current and transmits the data back to the tablet computer until the current disappears after the switch is opened; since SJ1 and SJ2 have not returned yet, that is, the opening and closing commands of the high-voltage circuit breaker still remain, if the anti-trip test is correct at this time, the closing circuit of the high-voltage circuit breaker is disconnected by the anti-trip relay contact FJ, the high-voltage circuit breaker should continue to remain in the opening state and cannot be closed, and the closing current sensor will not sense the current, then it is judged that the closing anti-trip test of the high-voltage circuit breaker is correct; if the closing current sensor senses the current again, that is, the circuit breaker is closed again, then it is judged that the closing anti-trip test of the high-voltage circuit breaker has failed, and at this time the DC power supply module is immediately disconnected to prevent the closing coil from burning.

[0014] Furthermore, the 4G communication module is mainly used to ensure a two-way transmission path between the detection device and the detection and analysis system, so that information can be transmitted two-way between the detection and analysis system and the detection device.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the graphical visualization high-voltage circuit breaker anti-trip test monitoring system and device of the present invention are as follows:

[0016] 1. The one-button operation of the high-voltage circuit breaker anti-trip test of the present invention uniformly controls the opening and closing circuits inside the device, and mechanical control prevents the influence of personnel cooperation and irregular test operation on the test results, which can maximize the detection efficiency and greatly reduce the input of manpower. Automatically cut off the power after the test fails, ensuring the equipment safety of the high-voltage circuit breaker.

[0017] 2. The high-voltage circuit breaker anti-trip test visualization detection of the present invention displays and analyzes data through charts, images or other visualization forms to better discover potential patterns, trends and abnormal conditions in the high-voltage circuit breaker anti-trip test process; by visualizing the high-voltage circuit breaker anti-trip test data as charts or images, the data of complex high-voltage circuit breaker anti-trip tests are converted into a form that is easy to understand and interpret, so that people can more easily identify patterns and regularities in the high-voltage circuit breaker anti-trip test data.

[0018] 3. The dynamic analysis of the high-voltage circuit breaker anti-trip test process of the present invention is to comprehensively observe the changes in the high-voltage circuit breaker anti-trip test data and action process in the time dimension, analyze and interpret the high-voltage circuit breaker anti-trip test data, and capture the abnormal situation of the high-voltage circuit breaker anti-trip test. By real-time dynamic monitoring and analysis of data changes in the high-voltage circuit breaker anti-trip test process, abnormal behaviors, events that deviate from the normal state, or abnormal data of the high-voltage circuit breaker anti-trip test can be quickly discovered and identified. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 The present invention is a flowchart of a graphically visualized high-voltage circuit breaker anti-trip test monitoring system and device. DETAILED DESCRIPTION

[0021] The following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The present invention provides a graphic visualization high-voltage circuit breaker anti-trip test monitoring system and device: the system comprises a graphic visualization high-voltage circuit breaker anti-trip test monitoring device and a tablet computer, the graphic visualization high-voltage circuit breaker anti-trip test monitoring device comprises a central processing unit, a 4G communication module, an analog-to-digital conversion module, a delay relay SJ1, a delay relay SJ2, and a DC power supply module, and the tablet computer has built-in graphic visualization detection and analysis software.

[0023] The central processor is responsible for controlling the entire device, receiving instructions from the tablet computer, controlling the action of the relay, and processing sensor data; the 4G communication module realizes wireless communication between the device and the tablet computer, and transmits control instructions and test data; the analog-to-digital conversion module converts the analog signal collected by the current sensor into a digital signal for processing by the central processor; the delay relay SJ1 and the delay relay SJ2 are used to simulate the timing conditions in the test and control the on and off of the opening and closing circuits.

[0024] The DC power supply module provides the power required for the test and can immediately disconnect the power supply to protect the equipment when the test fails; the current sensor is installed in a non-series manner and detects the current in the opening and closing circuits through the Hall effect principle.

[0025] The tablet computer has built-in graphic visualization detection and analysis software for sending test instructions, receiving and displaying test data, and performing data analysis and result judgment.

[0026] The graphic visualization high-voltage circuit breaker anti-trip test monitoring device connects a 220V DC power supply and two delay relay contacts SJ1 and SJ2 to the opening circuit and closing circuit through a test line. SJ1 should cross the five-protection coding lock and the opening switch handle and be connected to the closing circuit outlet of the measurement and control device; SJ1 should cross the tripping outlet contact of the protection device and the tripping outlet pressure plate and be connected to the upper end of the tripping outlet pressure plate.

[0027] The two-way current sensors in the graphically visualized high-voltage circuit breaker anti-trip test monitoring device are mainly used to detect the current during the opening and closing action of the high-voltage circuit breaker. Based on high-speed acquisition technology, a non-series wiring mode is adopted. By using the Hall current detection principle, when the current passes through the opening and closing circuit, a magnetic field perpendicular to the current direction is generated; acting on the Hall element, by measuring the size of the Hall potential difference, the size of the current passing through the opening and closing circuit can be calculated, and the current during the opening and closing action of the high-voltage circuit breaker is collected by induction. Multi-point acquisition is performed based on the action time, providing multi-point data for the detection and analysis system and providing support for generating curves.

[0028] When the central processor receives the start instruction of the split-position anti-trip test from the tablet computer through the 4G communication module, the high-voltage circuit breaker should be in the open state, the SJ1 contact is closed and does not return, the high-voltage circuit breaker closing circuit is turned on, the closing coil is energized to close, and the closing current sensor senses the current and transmits the data back to the tablet computer; after 70ms, the SJ2 contact is closed and does not return, the high-voltage circuit breaker closing circuit is disconnected, the opening circuit is turned on, and the opening coil is energized to open, and the corresponding opening current sensor senses the current and transmits the data back to the tablet computer until the current disappears after the switch is opened; due to SJ1, SJ2 has not returned yet, that is, the high-voltage circuit breaker opening and closing command has not disappeared. At this time, if the anti-tripping test is correct, the closing circuit of the high-voltage circuit breaker is disconnected by the anti-tripping relay contact FJ. After the energy storage is completed, the high-voltage circuit breaker should continue to remain in the open state and cannot be closed. The closing current sensor will not feel the current again, then it is judged that the high-voltage circuit breaker position anti-tripping test is correct; if after the high-voltage circuit breaker completes the energy storage, the closing current sensor feels the current again, that is, the circuit breaker is closed again, then it is judged that the high-voltage circuit breaker position anti-tripping test has failed, and the DC power supply module is immediately disconnected to prevent the closing coil from burning.

[0029] When the central processor receives the start instruction of the closing anti-trip test from the tablet computer through the 4G communication module, the high-voltage circuit breaker should be in the closing state, the SJ1 contact is closed and does not return, and the SJ2 contact is closed and does not return after 5ms, the high-voltage circuit breaker opening circuit is turned on, the opening coil is energized for opening, and the opening current sensor senses the current and transmits the data back to the tablet computer until the current disappears after the switch is opened; since SJ1 and SJ2 have not returned yet, that is, the opening and closing commands of the high-voltage circuit breaker still remain, if the anti-trip test is correct at this time, the closing circuit of the high-voltage circuit breaker is disconnected by the anti-trip relay contact FJ, the high-voltage circuit breaker should continue to remain in the opening state and cannot be closed, and the closing current sensor will not feel the current, then it is judged that the closing anti-trip test of the high-voltage circuit breaker is correct; if the closing current sensor feels the current again, that is, the circuit breaker is closed again, then it is judged that the closing anti-trip test of the high-voltage circuit breaker has failed, and at this time the DC power supply module is immediately disconnected to prevent the closing coil from burning.

[0030] The 4G communication module is mainly used to ensure a two-way transmission path between the detection device and the detection and analysis system, so that information can be transmitted two-way between the detection and analysis system and the detection device.

[0031] To achieve full-duplex communication, the detection and analysis system and the detection device can send and receive information at the same time in full-duplex communication. The detection and analysis system issues action instructions to the detection device through 4G communication, and the detection device transmits test data to the detection and analysis system after execution, thus achieving true two-way communication.

[0032] The detection and analysis system requires re-sampling pre-processing. The detection and analysis system samples the current during the opening and closing actions of the high-voltage circuit breaker, and pre-processes the current data during the opening and closing actions of the high-voltage circuit breaker, so as to better display the target components or characteristics in the sample.

[0033] The current during the opening and closing of the high-voltage circuit breaker needs to be detected and recorded, and then further processed and analyzed by the detection and analysis system after amplification, filtering, digitization, etc. The detection and analysis system uses statistical methods, model fitting, and database comparison to analyze and process the current during the opening and closing of the high-voltage circuit breaker. Finally, the detection and analysis system outputs the opening and closing process of the high-voltage circuit breaker to the user in the form of reports, graphics, numerical values, etc., providing a reference for decision-making and research.

[0034] The present invention and its implementation methods are described above, and such description is not restrictive. In short, if a person skilled in the art is inspired by it and, without departing from the purpose of the invention, designs structures and embodiments similar to the technical solution without creativity, they should all fall within the protection scope of the present invention.

Claims

1. A graphic visualization high-voltage circuit breaker anti-trip test monitoring system and device, the system comprises a graphic visualization high-voltage circuit breaker anti-trip test monitoring device and a tablet computer, the graphic visualization high-voltage circuit breaker anti-trip test monitoring device comprises a central processing unit, a 4G communication module, an analog-to-digital conversion module, a delay relay SJ1, a delay relay SJ2, and a DC power supply module, and the tablet computer has built-in graphic visualization detection and analysis software.

2. A graphical visualization high-voltage circuit breaker anti-trip test monitoring system and device according to claim 1, characterized in that: The central processor is responsible for controlling the entire device, receiving instructions from the tablet computer, controlling the action of the relay, and processing sensor data; the 4G communication module realizes wireless communication between the device and the tablet computer, and transmits control instructions and test data; the analog-to-digital conversion module converts the analog signal collected by the current sensor into a digital signal for processing by the central processor; the delay relay SJ1 and the delay relay SJ2 are used to simulate the timing conditions in the test and control the on and off of the opening and closing circuits.

3. A graphical visualization high-voltage circuit breaker anti-trip test monitoring system and device according to claim 1, characterized in that: The DC power supply module provides the power required for the test and can immediately disconnect the power supply to protect the equipment when the test fails; the current sensor is installed in a non-series manner and detects the current in the opening and closing circuits through the Hall effect principle.

4. A graphical visualization high-voltage circuit breaker anti-trip test monitoring system and device according to claim 1, characterized in that: The tablet computer has built-in graphic visualization detection and analysis software for sending test instructions, receiving and displaying test data, and performing data analysis and result judgment.

5. A graphical visualization high-voltage circuit breaker anti-trip test monitoring system and device according to claim 1, characterized in that: The graphic visualization high-voltage circuit breaker anti-trip test monitoring device connects a 220V DC power supply and two delay relay contacts SJ1 and SJ2 to the opening circuit and closing circuit through a test line. SJ1 should cross the five-protection coding lock and the opening switch handle and be connected to the closing circuit outlet of the measurement and control device; SJ1 should cross the tripping outlet contact of the protection device and the tripping outlet pressure plate and be connected to the upper end of the tripping outlet pressure plate.

6. A graphical visualization high-voltage circuit breaker anti-trip test monitoring system and device according to claim 1, characterized in that: The two-way current sensors in the graphically visualized high-voltage circuit breaker anti-trip test monitoring device are mainly used to detect the current during the opening and closing action of the high-voltage circuit breaker. Based on high-speed acquisition technology, a non-series wiring mode is adopted. By using the Hall current detection principle, when the current passes through the opening and closing circuit, a magnetic field perpendicular to the current direction is generated; acting on the Hall element, by measuring the size of the Hall potential difference, the size of the current passing through the opening and closing circuit can be calculated, and the current during the opening and closing action of the high-voltage circuit breaker is collected by induction. Multi-point acquisition is performed based on the action time, providing multi-point data for the detection and analysis system and providing support for generating curves.

7. A graphical visualization high-voltage circuit breaker anti-trip test monitoring system and device according to claim 1, characterized in that: When the central processor receives the start instruction of the split-position anti-trip test from the tablet computer through the 4G communication module, the high-voltage circuit breaker should be in the open state, the SJ1 contact is closed and does not return, the high-voltage circuit breaker closing circuit is turned on, the closing coil is energized to close, and the closing current sensor senses the current and transmits the data back to the tablet computer; after 70ms, the SJ2 contact is closed and does not return, the high-voltage circuit breaker closing circuit is disconnected, the opening circuit is turned on, and the opening coil is energized to open, and the corresponding opening current sensor senses the current and transmits the data back to the tablet computer until the current disappears after the switch is opened; due to SJ1, SJ2 has not returned yet, that is, the high-voltage circuit breaker opening and closing command has not disappeared. At this time, if the anti-tripping test is correct, the closing circuit of the high-voltage circuit breaker is disconnected by the anti-tripping relay contact FJ. After the energy storage is completed, the high-voltage circuit breaker should continue to remain in the open state and cannot be closed. The closing current sensor will not feel the current again, then it is judged that the high-voltage circuit breaker position anti-tripping test is correct; if after the high-voltage circuit breaker completes the energy storage, the closing current sensor feels the current again, that is, the circuit breaker is closed again, then it is judged that the high-voltage circuit breaker position anti-tripping test has failed, and the DC power supply module is immediately disconnected to prevent the closing coil from burning.

8. A graphical visualization high-voltage circuit breaker anti-trip test monitoring system and device according to claim 1, characterized in that: When the central processor receives the start instruction of the closing anti-trip test from the tablet computer through the 4G communication module, the high-voltage circuit breaker should be in the closing state, the SJ1 contact is closed and does not return, and the SJ2 contact is closed and does not return after 5ms, the high-voltage circuit breaker opening circuit is turned on, the opening coil is energized for opening, and the opening current sensor senses the current and transmits the data back to the tablet computer until the current disappears after the switch is opened; since SJ1 and SJ2 have not returned yet, that is, the opening and closing commands of the high-voltage circuit breaker still remain, if the anti-trip test is correct at this time, the closing circuit of the high-voltage circuit breaker is disconnected by the anti-trip relay contact FJ, the high-voltage circuit breaker should continue to remain in the opening state and cannot be closed, and the closing current sensor will not feel the current, then it is judged that the closing anti-trip test of the high-voltage circuit breaker is correct; if the closing current sensor feels the current again, that is, the circuit breaker is closed again, then it is judged that the closing anti-trip test of the high-voltage circuit breaker has failed, and at this time the DC power supply module is immediately disconnected to prevent the closing coil from burning.

9. A graphical visualization high-voltage circuit breaker anti-trip test monitoring system and device according to claim 1, characterized in that: The 4G communication module is mainly used to ensure a two-way transmission path between the detection device and the detection and analysis system, so that information can be transmitted two-way between the detection and analysis system and the detection device.

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