An intelligent online monitoring method and system for high voltage vacuum circuit breaker

Abstract

The present invention relates to the field of electrical equipment monitoring, and is an intelligent online monitoring method and system for high-voltage vacuum circuit breakers, comprising: receiving a circuit breaker control signal, using a started electromagnetic coil to perform an electromagnetic pushing operation on a moving contact transmission rod to obtain a moving transmission rod, performing a monitoring operation on the moving transmission rod based on a preset monitoring frequency and a displacement sensor, performing a speed analysis on the displacement sequence to obtain a displacement fluctuation index and an average displacement speed, calculating a displacement failure rate based on the displacement fluctuation index and the average displacement speed, and if the displacement failure rate is less than or equal to a displacement failure threshold, performing a vacuum inspection operation on a vacuum interrupter using a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor to obtain an arc extinguishing vacuum index, and completing online monitoring of the high-voltage vacuum circuit breaker when the circuit breaker monitoring platform receives a safety signal or a warning signal. The present invention can improve the real-time performance and accuracy of monitoring high-voltage vacuum circuit breakers.

Description

Technical Field

[0001] The present invention relates to the field of electrical equipment monitoring, and in particular to an intelligent online monitoring method, system, electronic equipment and computer-readable storage medium for a high-voltage vacuum circuit breaker. Background Art

[0002] As an important switchgear in the power system, high-voltage vacuum circuit breakers are mainly used to realize circuit on-off and fault protection. Their performance is directly related to the safety and reliability of the power system. Existing high-voltage vacuum circuit breakers are usually composed of a vacuum interrupter and an operating mechanism.

[0003] At present, the monitoring of high-voltage vacuum circuit breakers is usually carried out through manual inspection or by installing sensors on the surface of the high-voltage vacuum circuit breakers.

[0004] Although both manual inspection and installation of sensors on the surface of high-voltage vacuum circuit breakers can complete the monitoring of high-voltage vacuum circuit breakers, manual inspection is more expensive and less timely, and the sensors installed on the surface of high-voltage vacuum circuit breakers are easily affected by the external environment during monitoring, resulting in insufficient accuracy. Therefore, an intelligent online monitoring method is urgently needed to improve the real-time and accuracy of monitoring high-voltage vacuum circuit breakers. Summary of the invention

[0005] The present invention provides an intelligent online monitoring method for a high-voltage vacuum circuit breaker and a computer-readable storage medium, the main purpose of which is to improve the real-time performance and accuracy of monitoring the high-voltage vacuum circuit breaker.

[0006] To achieve the above-mentioned purpose, the present invention provides an intelligent online monitoring method for a high-voltage vacuum circuit breaker, comprising: receiving a circuit breaker monitoring instruction, confirming a high-voltage vacuum circuit breaker to be operated based on the circuit breaker monitoring instruction, wherein the high-voltage vacuum circuit breaker comprises: a vacuum interrupter and an operating mechanism, and the operating mechanism comprises: an electromagnetic coil, a limit plate and a moving contact transmission rod; confirming a circuit breaker monitoring mechanism, wherein the circuit breaker monitoring mechanism comprises: a piezoelectric sensor, an ionization sensor, a thermal conductivity sensor, a displacement sensor and an online communication device, and the displacement sensor is used to monitor the displacement of the moving contact transmission rod, the piezoelectric sensor, the ionization sensor and the thermal conductivity sensor are used to monitor the displacement of the moving contact transmission rod, and the piezoelectric sensor, the ionization sensor and the thermal conductivity sensor are used to monitor the displacement of the moving contact transmission rod. The thermal conductivity sensors are installed in the vacuum interrupter, wherein the thermal conductivity sensor includes: a resistance wire and a temperature sensor; receiving the circuit breaker control signal, sending the circuit breaker control signal to the operating mechanism, when the operating mechanism receives the circuit breaker control signal, starting the electromagnetic coil in the operating mechanism, using the electromagnetic coil after starting to perform an electromagnetic pushing operation on the moving contact transmission rod to obtain a moving transmission rod; based on the preset monitoring frequency and displacement sensor, performing a monitoring operation on the moving transmission rod, when the moving transmission rod contacts the limit plate in the operating mechanism, closing the electromagnetic coil in the operating mechanism to obtain a displacement sequence, wherein the displacement sequence includes: displacement values; speed analysis is performed on the displacement time series to obtain a displacement fluctuation index and an average displacement speed; the displacement failure rate is calculated according to the displacement fluctuation index and the average displacement speed, and the displacement failure rate is compared with a preset displacement failure threshold; if the displacement failure rate is less than or equal to the displacement failure threshold, a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor are used to perform a vacuum inspection operation on the vacuum arc extinguishing chamber to obtain an arc extinguishing vacuum index; if the arc extinguishing vacuum index is less than or equal to the preset vacuum threshold, a pre-constructed safety signal is sent to a pre-constructed circuit breaker monitoring platform by an online communication device; if the displacement failure rate is greater than the displacement fault threshold or the arc extinguishing vacuum index is greater than the vacuum threshold, a pre-constructed warning signal is sent to the circuit breaker monitoring platform by an online communication device; when the circuit breaker monitoring platform receives the safety signal or the warning signal, the online monitoring of the high-voltage vacuum circuit breaker is completed.

[0007] Optionally, the speed analysis of the displacement time series to obtain the displacement fluctuation index and the average displacement speed includes: extracting the first displacement values, where The initial value of The displacement value is confirmed in the displacement sequence. The displacement values ​​and displacement values, among which The displacement value is the same as the The displacement values ​​are adjacent and lag behind The displacement value, The displacement value is the same as the +1 displacement value is adjacent and lags behind +1 displacement value; using the The displacement values ​​and The displacement value is used to calculate the running speed. The calculation formula is as follows:

[0008] ,in, is the running speed, For the The displacement value, For the The displacement value, is the preset monitoring time interval; The displacement value, The displacement values ​​and The displacement values ​​are used to calculate the running acceleration; the running speed is stored in a pre-constructed speed memory to obtain a first memory, and the running acceleration is stored in a pre-constructed acceleration memory to obtain a second memory; the first memory is used as a speed memory, and the second memory is used as an acceleration memory, and I= +1, I as , returns the first steps of displacement values ​​until = -2, read from the first memory The running speed is read from the second memory The running acceleration is: = -2; exploit The running speed and The displacement fluctuation index and average displacement velocity are calculated based on the running acceleration.

[0009] Optionally, the calculation formula of the running acceleration is as follows:

[0010] ,in, is the running acceleration, For the displacement value.

[0011] Optionally, the use The running speed and Calculate the displacement fluctuation index and average displacement speed based on the running acceleration, including: Each of the running accelerations performs the following operations: confirming the absolute acceleration according to the running acceleration, wherein the absolute acceleration is the absolute value of the running acceleration; comparing the absolute acceleration with the preset normal acceleration, and if the absolute acceleration is greater than or equal to the normal acceleration, recording the absolute acceleration as an abnormal acceleration; summarizing the abnormal accelerations to obtain multiple abnormal accelerations, and calculating the abnormal acceleration according to the multiple abnormal accelerations and the normal accelerations; The displacement fluctuation index is calculated based on the running acceleration; The average displacement speed is calculated from the running speed, where the average displacement speed is The average running speed.

[0012] Optionally, the method according to a plurality of abnormal accelerations and The displacement fluctuation index is calculated using the running acceleration, including: The absolute acceleration mean is calculated by running acceleration. The calculation formula is as follows:

[0013] ,in, is the absolute acceleration mean, for The running acceleration The running acceleration, It means taking the absolute value.

[0014] The displacement fluctuation index is calculated based on multiple abnormal accelerations and the average of absolute accelerations. The calculation formula is as follows:

[0015] ,in, is the displacement fluctuation index, is the number of abnormal accelerations among multiple abnormal accelerations, It is the first of multiple abnormal accelerations. An abnormal acceleration, is the normal acceleration, is the hyperbolic tangent function.

[0016] Optionally, the calculation of the displacement failure rate according to the displacement fluctuation index and the average displacement speed includes: obtaining a plurality of reference displacement data from a pre-constructed central database, wherein the reference displacement data includes: a plurality of reference speeds, a plurality of reference accelerations and a storage time; performing the following operations on each of the plurality of reference displacement data: obtaining a reference fluctuation index and a reference average speed based on the plurality of reference speeds and the plurality of reference accelerations in the reference displacement data; and calculating the reference failure rate according to the reference fluctuation index, the reference average speed, the displacement fluctuation index and the average displacement speed, wherein the calculation formula is as follows:

[0017] ,in, is the reference failure rate, where and are the average displacement velocity and the reference average velocity, respectively. is a reference fluctuation index; summarizing the reference failure rates to obtain multiple reference failure rates; obtaining the current time, and calculating the displacement failure rate according to the current time, the storage time in the multiple reference displacement data, and the multiple reference failure rates.

[0018] Optionally, the calculation formula of the displacement failure rate is as follows:

[0019] ,in, is the displacement failure rate, is the current time, is the first of multiple reference failure rates A reference failure rate, is the first of multiple reference failure rates The storage time corresponding to the reference failure rate is is a natural constant, is the number of reference failure rates in the multiple reference failure rates.

[0020] Optionally, the vacuum inspection operation of the vacuum arc chamber is performed using a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor to obtain an arc extinguishing vacuum index, including: reading the sensing pressure value of the piezoelectric sensor in the vacuum arc chamber; generating multiple thermal electrons in the vacuum arc chamber using an ionization sensor, wherein the vacuum arc chamber includes: residual gas; performing an ionization operation on the residual gas in the vacuum arc chamber using multiple thermal electrons to obtain an ion current, and performing a detection operation on the ion current using the ionization sensor to obtain a sensing current value; performing a heating operation on the resistance wire in the thermal conductivity sensor, and using a temperature sensor to monitor the surface temperature of the resistance wire in real time, and when the surface temperature reaches a preset test temperature, a target resistance wire is obtained; performing a natural heat dissipation operation on the target resistance wire to obtain a heat dissipation resistance wire, wherein a heat dissipation time for performing the natural heat dissipation operation on the target resistance wire is preset; using a temperature sensor to read the final temperature of the heat dissipation resistance wire, and calculating the sensing thermal conductivity using the test temperature, the final temperature and the heat dissipation time, and the calculation formula is as follows:

[0021] ,in, is the sensing thermal conductivity, and are the test temperature and the final temperature, is the heat dissipation time; the arc extinguishing vacuum index is calculated using the sensing pressure value, sensing current value and sensing thermal conductivity.

[0022] Optionally, the calculation formula of the arc extinguishing vacuum index is as follows:

[0023] ,in, is the arc extinguishing vacuum index, and are the sensing pressure value and the sensing current value respectively.

[0024] To achieve the above-mentioned purpose, the present invention also provides an intelligent online monitoring system for a high-voltage vacuum circuit breaker, comprising: a monitoring mechanism confirmation module, which is used to receive a circuit breaker monitoring instruction, and confirm the high-voltage vacuum circuit breaker to be operated based on the circuit breaker monitoring instruction, wherein the high-voltage vacuum circuit breaker comprises: a vacuum interrupter and an operating mechanism, and the operating mechanism comprises: an electromagnetic coil, a limit plate and a moving contact transmission rod, and confirms the circuit breaker monitoring mechanism, wherein the circuit breaker monitoring mechanism comprises: a piezoelectric sensor, an ionization sensor, a thermal conductivity sensor, a displacement sensor and an online communication device, and the displacement sensor is used to monitor the displacement of the moving contact transmission rod, the piezoelectric sensor, the ionization sensor and the thermal conductivity sensor The thermal conductivity sensors are all installed in the vacuum interrupter, wherein the thermal conductivity sensor includes: a resistance wire and a temperature sensor; a transmission displacement analysis module, which is used to receive the circuit breaker control signal, and send the circuit breaker control signal to the operating mechanism. When the operating mechanism receives the circuit breaker control signal, the electromagnetic coil in the operating mechanism is started, and the electromagnetic coil after being started is used to perform an electromagnetic pushing operation on the moving contact transmission rod to obtain a moving transmission rod. The moving transmission rod is monitored based on a preset monitoring frequency and a displacement sensor. When the moving transmission rod contacts the limit plate in the operating mechanism, the electromagnetic coil in the operating mechanism is closed to obtain a displacement sequence, wherein the displacement sequence includes: A displacement value is obtained, and a speed analysis is performed on the displacement time series to obtain a displacement fluctuation index and an average displacement speed. The displacement failure rate is calculated according to the displacement fluctuation index and the average displacement speed, and the displacement failure rate is compared with a preset displacement fault threshold. An arc extinguishing vacuum inspection module is used to perform a vacuum inspection operation on the vacuum arc extinguishing chamber using a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor to obtain an arc extinguishing vacuum index if the displacement failure rate is less than or equal to the displacement fault threshold. A monitoring platform communication module is used to send a pre-constructed safety signal to a pre-constructed circuit breaker monitoring platform using an online communication device if the arc extinguishing vacuum index is less than or equal to the preset vacuum threshold. If the displacement failure rate is greater than the displacement fault threshold or the arc extinguishing vacuum index is greater than the vacuum threshold, a pre-constructed warning signal is sent to the circuit breaker monitoring platform using an online communication device. When the circuit breaker monitoring platform receives the safety signal or the warning signal, the online monitoring of the high-voltage vacuum circuit breaker is completed.

[0025] In order to solve the above problem, the present invention also provides an electronic device, which includes: a memory storing at least one instruction; and a processor executing the instruction stored in the memory to implement the above-mentioned intelligent online monitoring method for high-voltage vacuum circuit breaker.

[0026] In order to solve the above problem, the present invention also provides a computer-readable storage medium, in which at least one instruction is stored. The at least one instruction is executed by a processor in an electronic device to implement the above-mentioned intelligent online monitoring method for high-voltage vacuum circuit breaker.

[0027] The present invention is to solve the problem described in the background technology. The present invention receives a circuit breaker monitoring instruction, and confirms the high-voltage vacuum circuit breaker to be operated based on the circuit breaker monitoring instruction, wherein the high-voltage vacuum circuit breaker includes: a vacuum arc extinguishing chamber and an operating mechanism, and the operating mechanism includes: an electromagnetic coil, a limit plate and a moving contact transmission rod. It can be seen that the embodiment of the present invention confirms the high-voltage vacuum circuit breaker to be monitored through the circuit breaker monitoring instruction, which is convenient for subsequent continuous monitoring of the high-voltage vacuum circuit breaker, and then confirms the circuit breaker monitoring mechanism, wherein the circuit breaker monitoring mechanism includes: a piezoelectric sensor, an ionization sensor, a thermal conductivity sensor, a displacement sensor and an online communication device, and the displacement sensor is used to monitor the displacement of the moving contact transmission rod, and the piezoelectric sensor, the ionization sensor and the thermal conductivity sensor are all installed in the vacuum arc extinguishing chamber, wherein the thermal conductivity sensor The sensor includes: a resistance wire and a temperature sensor. It can be seen that the embodiment of the present invention constructs a complete monitoring system by confirming the circuit breaker monitoring mechanism, installing a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor in the vacuum arc chamber, thereby improving the accuracy of monitoring the high-voltage vacuum circuit breaker, receiving the circuit breaker control signal, and sending the circuit breaker control signal to the operating mechanism. When the operating mechanism receives the circuit breaker control signal, the electromagnetic coil in the operating mechanism is started, and the electromagnetic coil after starting is used to perform an electromagnetic pushing operation on the moving contact transmission rod to obtain a moving transmission rod. The moving transmission rod is monitored based on a preset monitoring frequency and a displacement sensor. When the moving transmission rod contacts the limit plate in the operating mechanism, the electromagnetic coil in the operating mechanism is closed to obtain a displacement sequence, wherein the displacement sequence includes: displacement values, it can be seen that the embodiment of the present invention monitors the displacement of the moving transmission rod through the displacement sensor, accurately measures the displacement timing of the moving transmission rod, and is convenient for the subsequent analysis of the motion state of the moving transmission rod according to the displacement timing, and performs speed analysis on the displacement timing to obtain the displacement fluctuation index and the average displacement speed. It can be seen that the embodiment of the present invention performs speed analysis on the displacement timing to accurately calculate the displacement fluctuation index and the average displacement speed of the moving transmission rod during movement, thereby improving the accuracy of monitoring the high-voltage vacuum circuit breaker, and calculates the displacement failure rate according to the displacement fluctuation index and the average displacement speed, and compares the displacement failure rate with the preset displacement failure threshold. If the displacement failure rate is less than or equal to the displacement failure threshold, the piezoelectric sensor, the ionization sensor, and the thermal conductivity sensor are used to perform a vacuum inspection operation on the vacuum interrupter to obtain the arc extinguishing vacuum index. It can be seen that the present invention The embodiment performs comprehensive detection on the vacuum interrupter through piezoelectric sensors, ionization sensors, and thermal conductivity sensors, and calculates the arc extinguishing vacuum index, accurately quantifies the vacuum degree of the vacuum interrupter, and improves the accuracy of monitoring the high-voltage vacuum circuit breaker. If the arc extinguishing vacuum index is less than or equal to the preset vacuum threshold, the pre-constructed safety signal is sent to the pre-constructed circuit breaker monitoring platform using an online communication device. If the displacement fault rate is greater than the displacement fault threshold or the arc extinguishing vacuum index is greater than the vacuum threshold, the pre-constructed warning signal is sent to the circuit breaker monitoring platform using an online communication device. When the circuit breaker monitoring platform receives the safety signal or the warning signal, the online monitoring of the high-voltage vacuum circuit breaker is completed. It can be seen that the embodiment of the present invention feeds back the monitoring results to the circuit breaker monitoring platform in real time through the online communication device, thereby improving the real-time performance of monitoring the high-voltage vacuum circuit breaker. Therefore, the present invention can improve the real-time performance and accuracy of monitoring the high-voltage vacuum circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic flow chart of an intelligent online monitoring method for a high-voltage vacuum circuit breaker provided in one embodiment of the present invention; Figure 2 A functional module diagram of an intelligent online monitoring system for a high-voltage vacuum circuit breaker provided by an embodiment of the present invention; Figure 3 A schematic structural diagram of an electronic device for implementing the intelligent online monitoring method for a high-voltage vacuum circuit breaker provided in one embodiment of the present invention.

[0029] Explanation of the reference numerals: 1. electronic device; 10. processor; 11. memory; 12. bus.

[0030] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0032] The embodiment of the present application provides an intelligent online monitoring method for a high-voltage vacuum circuit breaker. The execution subject of the intelligent online monitoring method for a high-voltage vacuum circuit breaker includes but is not limited to at least one of the electronic devices such as a server and a terminal that can be configured to execute the method provided in the embodiment of the present application. In other words, the intelligent online monitoring method for a high-voltage vacuum circuit breaker can be executed by software or hardware installed on a terminal device or a server device, and the software can be a blockchain platform. The server includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, etc.

[0033] Reference Figure 1 As shown, it is a flow chart of an intelligent online monitoring method for a high-voltage vacuum circuit breaker provided by an embodiment of the present invention. In this embodiment, the intelligent online monitoring method for a high-voltage vacuum circuit breaker includes: S1, receiving a circuit breaker monitoring instruction, and confirming a high-voltage vacuum circuit breaker to be operated based on the circuit breaker monitoring instruction, wherein the high-voltage vacuum circuit breaker includes: a vacuum interrupter and an operating mechanism, and the operating mechanism includes: an electromagnetic coil, a limit plate, and a moving contact transmission rod.

[0034] It should be explained that the circuit breaker monitoring instruction is generally initiated by the monitor of the high-voltage vacuum circuit breaker. For example, Xiao Zhang is a monitor of a circuit breaker monitoring center. He now needs to conduct online monitoring of a high-voltage vacuum circuit breaker to be operated, so he initiates the circuit breaker monitoring instruction. Since each high-voltage vacuum circuit breaker has a corresponding number or code in the circuit breaker monitoring platform of the circuit breaker monitoring center, the number or code of the high-voltage vacuum circuit breaker can be specified when initiating the circuit breaker monitoring instruction, thereby issuing a circuit breaker monitoring instruction only for a specific high-voltage vacuum circuit breaker. Then, the circuit breaker monitoring center can confirm the corresponding high-voltage vacuum circuit breaker according to the number or code of the high-voltage vacuum circuit breaker corresponding to the circuit breaker monitoring instruction. The circuit breaker monitoring center is a department in a power substation used to monitor high-voltage vacuum circuit breakers.

[0035] It is understandable that a high-voltage vacuum circuit breaker is a vacuum circuit breaker used in a high-voltage power system, and the high-voltage vacuum circuit breaker includes: a vacuum arc extinguishing chamber and an operating mechanism. The vacuum arc extinguishing chamber is the core component of the high-voltage vacuum circuit breaker. The insulation of the high vacuum environment in the vacuum arc extinguishing chamber can suppress the formation and development of the arc when the current is disconnected, thereby achieving safe circuit disconnection. The operating mechanism is a mechanical device that drives the contacts of the high-voltage vacuum circuit breaker to complete the closing and opening operations, and the operating mechanism includes: an electromagnetic coil, a limit plate and a moving contact transmission rod. The electromagnetic coil is a device used to generate electromagnetic force in the operating mechanism. Its main function is to provide sufficient driving force to realize the opening or closing action of the high-voltage vacuum circuit breaker. The limit plate is a baffle with a pressure sensor. When the moving moving contact transmission rod contacts the limit plate, the limit plate will send a signal to prompt the electromagnetic coil moving contact transmission rod to move in place, thereby stopping the moving contact transmission rod from moving. The moving contact transmission rod is a mechanical rod connected to the moving contact of the high-voltage vacuum circuit breaker, which is used to transmit the driving force of the electromagnetic coil to enable the moving contact to complete the opening or closing action. The moving contact is a movable contact in the high-voltage vacuum circuit breaker. When closing, it contacts with the fixed contact to form a conductive circuit, and when opening, it separates from the fixed contact to cut off the circuit.

[0036] S2. Confirm the circuit breaker monitoring mechanism, wherein the circuit breaker monitoring mechanism includes: a piezoelectric sensor, an ionization sensor, a thermal conductivity sensor, a displacement sensor and an online communication device, and the displacement sensor is used to monitor the displacement of the moving contact transmission rod. The piezoelectric sensor, the ionization sensor and the thermal conductivity sensor are all installed in the vacuum interrupter, wherein the thermal conductivity sensor includes: a resistance wire and a temperature sensor.

[0037] It should be explained that the circuit breaker monitoring mechanism is a device used to monitor the operating status of the high-voltage vacuum circuit breaker, and the piezoelectric sensor, ionization sensor, thermal conductivity sensor and displacement sensor in the circuit breaker monitoring mechanism are all installed in the high-voltage vacuum circuit breaker in advance before the high-voltage vacuum circuit breaker is officially put into use.

[0038] It is understandable that a piezoelectric sensor is a sensor that senses changes in the surrounding air pressure through the deformation of piezoelectric materials and then outputs a corresponding electrical signal. The main function of the ionization sensor is to ionize the molecules of the residual gas in the vacuum interrupter by emitting multiple thermal electrons through the hot cathode of the ionization sensor, and to capture the positive ions generated by the ionization of the residual gas through the electric field generated by the ion collector of the ionization sensor, thereby forming a measurable ion current, which in turn reflects the number of molecules in the residual gas. The thermal conductivity sensor is a device that can measure the thermal conductivity of the residual gas in the vacuum interrupter. Since the heat transfer ability of the residual gas changes with the density of the residual gas, the vacuum degree of the vacuum interrupter can be reflected by the thermal conductivity of the residual gas, and the thermal conductivity sensor includes: a resistance wire and a temperature sensor. The displacement sensor is a sensor that can monitor the displacement of the moving contact transmission rod. The main function of the online communication device is to feed back the monitoring results of the high-voltage vacuum circuit breaker to the circuit breaker monitoring platform in real time.

[0039] S3, receiving the circuit breaker control signal, and sending the circuit breaker control signal to the operating mechanism. When the operating mechanism receives the circuit breaker control signal, the electromagnetic coil in the operating mechanism is started, and the electromagnetic coil after being started is used to perform an electromagnetic pushing operation on the moving contact transmission rod to obtain a moving transmission rod.

[0040] It should be explained that the circuit breaker control signal is initiated by the controller of the high-voltage vacuum circuit breaker. The electromagnetic pushing operation of the moving contact transmission rod by using the activated electromagnetic coil means: using the electromagnetic force generated by the electromagnetic coil to push the moving contact transmission rod.

[0041] For example, Xiao Wang is the controller of a high-voltage vacuum circuit breaker. He needs to disconnect the power transmission of a certain power line through the high-voltage vacuum circuit breaker, so he initiates the circuit breaker control signal. When the operating mechanism of the high-voltage vacuum circuit breaker receives the circuit breaker control signal, it will start the electromagnetic coil in the operating mechanism, use the electromagnetic coil to generate electromagnetic force to push the moving contact transmission rod, and then drive the moving contact on the high-voltage vacuum circuit breaker through the moving contact transmission rod, so that the moving contact is separated from the fixed contact to disconnect the circuit. The moving transmission rod refers to the moving contact transmission rod in the process of movement.

[0042] S4. Based on the preset monitoring frequency and displacement sensor, the motion transmission rod is monitored. When the motion transmission rod contacts the limit plate in the operating mechanism, the electromagnetic coil in the operating mechanism is closed to obtain a displacement sequence, wherein the displacement sequence includes: displacement value.

[0043] Exemplarily, the monitoring frequency is 1kHz (detected once every millisecond), that is, the displacement sensor detects the motion transmission rod once every millisecond, and each time the displacement sensor outputs the distance between the current position and the initial position of the motion transmission rod, and the distance is the displacement value, until the motion transmission rod contacts the limit plate in the operating mechanism, the electromagnetic coil in the operating mechanism is turned off to stop the motion of the motion transmission rod, and all displacement values ​​output by the displacement sensor during the motion of the motion transmission rod are counted to obtain the displacement time series, Refers to the number of displacement values ​​in the displacement time series, and the displacement time series includes A sequence of displacement values, and The displacement values ​​are sorted in the displacement sequence in the order of the time when the displacement values ​​are output from the earliest to the latest.

[0044] S5. Perform velocity analysis on the displacement time series to obtain the displacement fluctuation index and average displacement velocity.

[0045] In detail, the speed analysis of the displacement time series to obtain the displacement fluctuation index and the average displacement speed includes: extracting the first displacement values, where The initial value of The displacement value is confirmed in the displacement sequence. The displacement values ​​and displacement values, among which The displacement value is the same as the The displacement values ​​are adjacent and lag behind The displacement value, The displacement value is the same as the +1 displacement value is adjacent and lags behind +1 displacement value; using the The displacement values ​​and The displacement value is used to calculate the running speed. The calculation formula is as follows:

[0046] ,in, is the running speed, For the The displacement value, For the The displacement value, is the preset monitoring time interval; The displacement value, The displacement values ​​and The displacement values ​​are used to calculate the running acceleration; the running speed is stored in a pre-constructed speed memory to obtain a first memory, and the running acceleration is stored in a pre-constructed acceleration memory to obtain a second memory; the first memory is used as a speed memory, and the second memory is used as an acceleration memory, and I= +1, I as , returns the first steps of displacement values ​​until = -2, read from the first memory The running speed is read from the second memory The running acceleration is: = -2; exploit The running speed and The displacement fluctuation index and average displacement velocity are calculated based on the running acceleration.

[0047] In detail, the calculation formula of the running acceleration is as follows:

[0048] ,in, is the running acceleration, For the displacement value.

[0049] It should be understood that the operating speed reflects the speed at which the motion transmission rod The displacement value moves to the The running acceleration reflects the average speed of the moving transmission rod from the first displacement value. The displacement value moves to the The acceleration when the displacement value is 0.001. The speed memory is used to store the running speed. The acceleration memory is used to store the running acceleration.

[0050] Exemplarily, the first displacement value is extracted from the displacement sequence as the first displacement value, and the displacement value adjacent to the first displacement value and lagging behind the first displacement value in the displacement sequence is taken as the second displacement value, and the displacement value adjacent to the second displacement value and lagging behind the second displacement value in the displacement sequence is taken as the third displacement value, and after calculating the running speed and running acceleration using the first displacement value, the second displacement value and the third displacement value, the running speed is stored in the speed memory, the running acceleration is stored in the acceleration memory, and then the first displacement value extracted from the displacement sequence is returned to the first displacement value. The method further comprises the steps of extracting the second displacement value from the displacement sequence as the second displacement value, and then confirming the third displacement value and the fourth displacement value in sequence, and calculating the new running speed and running acceleration using the second displacement value, the third displacement value and the fourth displacement value, and storing the running speed and the running acceleration in the speed memory and the acceleration memory respectively again, and so on. If there are 100 displacement values ​​in the displacement sequence, that is, until the 98th displacement value is extracted from the displacement sequence, the 98th running speed and running acceleration are calculated and stored in the speed memory and the acceleration memory respectively, and after obtaining the first memory and the second memory, the loop ends, wherein 98 running speeds are stored in the first memory, and 98 running accelerations are stored in the second memory.

[0051] In detail, the use The running speed and Calculate the displacement fluctuation index and average displacement speed based on the running acceleration, including: Each of the running accelerations performs the following operations: confirming the absolute acceleration according to the running acceleration, wherein the absolute acceleration is the absolute value of the running acceleration; comparing the absolute acceleration with the preset normal acceleration, and if the absolute acceleration is greater than or equal to the normal acceleration, recording the absolute acceleration as an abnormal acceleration; summarizing the abnormal accelerations to obtain multiple abnormal accelerations, and calculating the abnormal acceleration according to the multiple abnormal accelerations and the normal accelerations; The displacement fluctuation index is calculated based on the running acceleration; The average displacement speed is calculated from the running speed, where the average displacement speed is The average running speed.

[0052] Exemplarily, the maximum absolute value of the acceleration that the moving transmission rod of a newly produced high-voltage vacuum circuit breaker can reach during normal operation is pre-determined as the normal acceleration.

[0053] It should be understood that the moving contact transmission rod in the high-voltage vacuum circuit breaker will age or wear after long-term use. Therefore, the acceleration of the moving contact transmission rod during operation may become abnormal due to aging or wear. Therefore, the embodiment of the present invention evaluates the probability of mechanical failure of the moving contact transmission rod in the high-voltage vacuum circuit breaker by statistically calculating the abnormal acceleration to facilitate the subsequent calculation of the displacement fluctuation index.

[0054] In detail, the method according to the plurality of abnormal accelerations and The displacement fluctuation index is calculated using the running acceleration, including: The absolute acceleration mean is calculated by running acceleration. The calculation formula is as follows:

[0055] ,in, is the absolute acceleration mean, for The running acceleration The running acceleration, It means taking the absolute value.

[0056] The displacement fluctuation index is calculated based on multiple abnormal accelerations and the average of absolute accelerations. The calculation formula is as follows:

[0057] ,in, is the displacement fluctuation index, is the number of abnormal accelerations among multiple abnormal accelerations, It is the first of multiple abnormal accelerations. An abnormal acceleration, is the normal acceleration, is the hyperbolic tangent function.

[0058] It should be understood that the displacement fluctuation index reflects the safety level of the operating condition of the moving contact transmission rod in the high-voltage vacuum circuit breaker during operation. The larger the displacement fluctuation index, the lower the safety level of the operating condition of the moving contact transmission rod in the high-voltage vacuum circuit breaker during operation.

[0059] S6. Calculate the displacement failure rate according to the displacement fluctuation index and the average displacement speed, and compare the displacement failure rate with a preset displacement failure threshold.

[0060] Preferably, the displacement fault threshold is set to 10%.

[0061] In detail, the calculation of the displacement failure rate according to the displacement fluctuation index and the average displacement speed includes: obtaining a plurality of reference displacement data from a pre-constructed central database, wherein the reference displacement data includes: a plurality of reference speeds, a plurality of reference accelerations and a storage time; performing the following operations on each of the plurality of reference displacement data: obtaining a reference fluctuation index and a reference average speed based on the plurality of reference speeds and a plurality of reference accelerations in the reference displacement data; calculating the reference failure rate according to the reference fluctuation index, the reference average speed, the displacement fluctuation index and the average displacement speed, and the calculation formula is as follows:

[0062] ,in, is the reference failure rate, where and are the average displacement velocity and the reference average velocity, respectively. is a reference fluctuation index; summarizing the reference failure rates to obtain multiple reference failure rates; obtaining the current time, and calculating the displacement failure rate according to the current time, the storage time in the multiple reference displacement data, and the multiple reference failure rates.

[0063] It should be explained that the central database is a database storing a plurality of reference displacement data.

[0064] Exemplarily, the circuit breaker monitoring center pre-builds a central database for storing multiple operating speeds and multiple operating accelerations generated by the moving contact connecting rods of other high-voltage vacuum circuit breakers during operation, thereby providing data reference for the currently monitored high-voltage vacuum circuit breaker. The multiple operating speeds generated by the moving contact connecting rods of other high-voltage vacuum circuit breakers during operation are multiple reference speeds, and the multiple operating accelerations generated by the moving contact connecting rods of other high-voltage vacuum circuit breakers during operation are multiple reference accelerations. The time for the central database to store the multiple operating speeds and multiple operating accelerations generated by the moving contact connecting rods of other high-voltage vacuum circuit breakers during operation is the storage time. The storage time, multiple reference speeds, and multiple reference accelerations together constitute a reference displacement data.

[0065] It is understandable that the method of obtaining the reference fluctuation index and the reference average speed based on the multiple reference speeds and multiple reference accelerations in the reference displacement data is the same as the method of obtaining the displacement fluctuation index and the average displacement speed using multiple operating speeds and multiple operating accelerations, and will not be repeated here. The reference failure rate reflects the probability of a mechanical failure of the moving contact transmission rod in the high-voltage vacuum circuit breaker when referring to one of the multiple reference displacement data. The greater the reference failure rate, the greater the probability of a mechanical failure of the moving contact transmission rod in the high-voltage vacuum circuit breaker.

[0066] It should be understood that the current time refers to the time when multiple reference failure rates are obtained. The shorter the interval between the storage time and the current time, the closer the reference displacement data is to the current environmental conditions and the higher the reference value. Therefore, when calculating the displacement failure rate, the smaller the difference between the storage time and the current time corresponding to the reference failure rate is, the greater the weight of the reference failure rate is.

[0067] In detail, the calculation formula of the displacement failure rate is as follows:

[0068] ,in, is the displacement failure rate, is the current time, is the first of multiple reference failure rates A reference failure rate, is the first of multiple reference failure rates The storage time corresponding to the reference failure rate is is a natural constant, is the number of reference failure rates in the multiple reference failure rates.

[0069] It should be understood that the displacement failure rate reflects the probability of mechanical failure of the moving contact transmission rod in the high-voltage vacuum circuit breaker. The greater the displacement failure rate, the greater the probability of mechanical failure of the moving contact transmission rod in the high-voltage vacuum circuit breaker.

[0070] S7. If the displacement failure rate is less than or equal to the displacement failure threshold, a vacuum inspection operation is performed on the vacuum interrupter using a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor to obtain an arc extinguishing vacuum index.

[0071] In detail, the vacuum inspection operation of the vacuum arc chamber is performed using a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor to obtain an arc extinguishing vacuum index, including: reading the sensing pressure value of the piezoelectric sensor in the vacuum arc chamber; generating a plurality of thermal electrons in the vacuum arc chamber using an ionization sensor, wherein the vacuum arc chamber includes: residual gas; performing an ionization operation on the residual gas in the vacuum arc chamber using a plurality of thermal electrons to obtain an ion current, and performing a detection operation on the ion current using an ionization sensor to obtain a sensing current value; performing a heating operation on the resistance wire in the thermal conductivity sensor, and using a temperature sensor to monitor the surface temperature of the resistance wire in real time, and when the surface temperature reaches a preset test temperature, a target resistance wire is obtained; performing a natural heat dissipation operation on the target resistance wire to obtain a heat dissipation resistance wire, wherein a heat dissipation time for performing the natural heat dissipation operation on the target resistance wire is preset; reading the final temperature of the heat dissipation resistance wire using a temperature sensor, and calculating the sensing thermal conductivity using the test temperature, the final temperature, and the heat dissipation time, and the calculation formula is as follows:

[0072] ,in, is the sensing thermal conductivity, and are the test temperature and the final temperature, is the heat dissipation time; the arc extinguishing vacuum index is calculated using the sensing pressure value, sensing current value and sensing thermal conductivity.

[0073] In detail, the calculation formula of the arc extinguishing vacuum index is as follows:

[0074] ,in, is the arc extinguishing vacuum index, and are the sensing pressure value and the sensing current value respectively.

[0075] It should be explained that the sensing pressure value is the value of the air pressure in the vacuum interrupter measured by the piezoelectric sensor. Since the vacuum interrupter cannot achieve absolute vacuum in actual applications, but maintains a high vacuum state, there is actually a trace amount of gas remaining in the vacuum interrupter, and the remaining trace amount of gas is the residual gas. The natural heat dissipation operation on the target resistance wire refers to: allowing the target resistance wire to dissipate heat in the environment of the vacuum interrupter.

[0076] Exemplarily, the ionization sensor emits thermal electrons through the internal hot cathode. These thermal electrons collide with the gas molecules of the residual gas, causing the gas molecules to be ionized, generating positive ions and free electrons. The generated positive ions are attracted to the negatively charged ion collector in the ionization sensor under the action of the electric field. When the ion collector captures the positive ions, a measurable ion current is formed. The current magnitude of the ion current is the sensing current value. The ion current is generated by the gas molecules of the residual gas. Therefore, the sensing current value reflects the number of gas molecules of the residual gas in the vacuum interrupter. The larger the sensing current value, the more gas molecules of the residual gas in the vacuum interrupter.

[0077] It is understandable that the test temperature is related to the model of the resistance wire and is set by the monitor.

[0078] Exemplarily, when the resistance wire is heated to the test temperature of 50 degrees Celsius, the heating is stopped. If the heat dissipation time is 3 minutes, the target resistance wire is allowed to dissipate heat in the vacuum arc chamber environment for 3 minutes to obtain a heat dissipation resistance wire, and the temperature of the heat dissipation resistance wire is read using a temperature sensor to obtain the final temperature.

[0079] It should be understood that since the heat transfer capacity of the residual gas in the vacuum interrupter changes with the density of the residual gas, the sensor thermal conductivity reflects the density of the residual gas in the vacuum interrupter. The greater the sensor thermal conductivity, the greater the density of the residual gas in the vacuum interrupter.

[0080] It can be understood that since the sensing pressure value is the value of the air pressure in the vacuum arc chamber measured by the piezoelectric sensor, the sensing current value reflects the number of gas molecules of the residual gas in the vacuum arc chamber, and the sensing thermal conductivity reflects the density of the residual gas in the vacuum arc chamber, the arc extinguishing vacuum index obtained by combining the sensing pressure value, the sensing current value and the sensing thermal conductivity comprehensively reflects the vacuum degree of the vacuum arc chamber. The larger the arc extinguishing vacuum index, the higher the vacuum degree of the vacuum arc chamber.

[0081] S8. If the arc extinguishing vacuum index is less than or equal to the preset vacuum threshold, the pre-constructed safety signal is sent to the pre-constructed circuit breaker monitoring platform using the online communication device; if the displacement fault rate is greater than the displacement fault threshold or the arc extinguishing vacuum index is greater than the vacuum threshold, the pre-constructed warning signal is sent to the circuit breaker monitoring platform using the online communication device.

[0082] Exemplarily, the vacuum threshold value may be determined in advance by measuring the arc extinguishing vacuum index of the vacuum interrupter in the newly produced qualified high-voltage vacuum circuit breaker, and the vacuum threshold value is set by the monitor.

[0083] It should be understood that the safety signal and the warning signal are data packets containing a safety text message and a warning text message respectively. For example, the safety text message is: "The high-voltage vacuum circuit breaker is operating normally!", and the warning text message is "The high-voltage vacuum circuit breaker may fail during operation!".

[0084] S9. When the circuit breaker monitoring platform receives a safety signal or a warning signal, the online monitoring of the high-voltage vacuum circuit breaker is completed.

[0085] It should be explained that the circuit breaker monitoring platform is a software pre-programmed in python or C++, which can parse the safety text information or warning text information contained in the safety signal or warning signal and display it on the computer page of the circuit breaker monitoring center.

[0086] The present invention is to solve the problem described in the background technology. The present invention receives a circuit breaker monitoring instruction, and confirms the high-voltage vacuum circuit breaker to be operated based on the circuit breaker monitoring instruction, wherein the high-voltage vacuum circuit breaker includes: a vacuum arc extinguishing chamber and an operating mechanism, and the operating mechanism includes: an electromagnetic coil, a limit plate and a moving contact transmission rod. It can be seen that the embodiment of the present invention confirms the high-voltage vacuum circuit breaker to be monitored through the circuit breaker monitoring instruction, which is convenient for subsequent continuous monitoring of the high-voltage vacuum circuit breaker, and then confirms the circuit breaker monitoring mechanism, wherein the circuit breaker monitoring mechanism includes: a piezoelectric sensor, an ionization sensor, a thermal conductivity sensor, a displacement sensor and an online communication device, and the displacement sensor is used to monitor the displacement of the moving contact transmission rod, and the piezoelectric sensor, the ionization sensor and the thermal conductivity sensor are all installed in the vacuum arc extinguishing chamber, wherein the thermal conductivity sensor The sensor includes: a resistance wire and a temperature sensor. It can be seen that the embodiment of the present invention constructs a complete monitoring system by confirming the circuit breaker monitoring mechanism, installing a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor in the vacuum arc chamber, thereby improving the accuracy of monitoring the high-voltage vacuum circuit breaker, receiving the circuit breaker control signal, and sending the circuit breaker control signal to the operating mechanism. When the operating mechanism receives the circuit breaker control signal, the electromagnetic coil in the operating mechanism is started, and the electromagnetic coil after starting is used to perform an electromagnetic pushing operation on the moving contact transmission rod to obtain a moving transmission rod. The moving transmission rod is monitored based on a preset monitoring frequency and a displacement sensor. When the moving transmission rod contacts the limit plate in the operating mechanism, the electromagnetic coil in the operating mechanism is closed to obtain a displacement sequence, wherein the displacement sequence includes: displacement values, it can be seen that the embodiment of the present invention monitors the displacement of the moving transmission rod through the displacement sensor, accurately measures the displacement timing of the moving transmission rod, and is convenient for the subsequent analysis of the motion state of the moving transmission rod according to the displacement timing, and performs speed analysis on the displacement timing to obtain the displacement fluctuation index and the average displacement speed. It can be seen that the embodiment of the present invention performs speed analysis on the displacement timing to accurately calculate the displacement fluctuation index and the average displacement speed of the moving transmission rod during movement, thereby improving the accuracy of monitoring the high-voltage vacuum circuit breaker, and calculates the displacement failure rate according to the displacement fluctuation index and the average displacement speed, and compares the displacement failure rate with the preset displacement failure threshold. If the displacement failure rate is less than or equal to the displacement failure threshold, the piezoelectric sensor, the ionization sensor, and the thermal conductivity sensor are used to perform a vacuum inspection operation on the vacuum interrupter to obtain the arc extinguishing vacuum index. It can be seen that the present invention The embodiment performs comprehensive detection on the vacuum interrupter through piezoelectric sensors, ionization sensors, and thermal conductivity sensors, and calculates the arc extinguishing vacuum index, accurately quantifies the vacuum degree of the vacuum interrupter, and improves the accuracy of monitoring the high-voltage vacuum circuit breaker. If the arc extinguishing vacuum index is less than or equal to the preset vacuum threshold, the pre-constructed safety signal is sent to the pre-constructed circuit breaker monitoring platform using an online communication device. If the displacement fault rate is greater than the displacement fault threshold or the arc extinguishing vacuum index is greater than the vacuum threshold, the pre-constructed warning signal is sent to the circuit breaker monitoring platform using an online communication device. When the circuit breaker monitoring platform receives the safety signal or the warning signal, the online monitoring of the high-voltage vacuum circuit breaker is completed. It can be seen that the embodiment of the present invention feeds back the monitoring results to the circuit breaker monitoring platform in real time through the online communication device, thereby improving the real-time performance of monitoring the high-voltage vacuum circuit breaker. Therefore, the present invention can improve the real-time performance and accuracy of monitoring the high-voltage vacuum circuit breaker.

[0087] like Figure 2 , which is a functional module diagram of an intelligent online monitoring system for a high-voltage vacuum circuit breaker provided by an embodiment of the present invention.

[0088] The intelligent online monitoring system 100 for high-voltage vacuum circuit breakers of the present invention can be installed in an electronic device. According to the functions to be implemented, the intelligent online monitoring system 100 for high-voltage vacuum circuit breakers can include a monitoring mechanism confirmation module 101, a transmission displacement analysis module 102, an arc extinguishing vacuum inspection module 103 and a monitoring platform communication module 104. The module of the present invention can also be referred to as a unit, which refers to a series of computer program segments that can be executed by an electronic device processor and can complete fixed functions, which are stored in the memory of the electronic device.

[0089] The monitoring mechanism confirmation module 101 is used to receive a circuit breaker monitoring instruction, and confirm the high-voltage vacuum circuit breaker to be operated based on the circuit breaker monitoring instruction, wherein the high-voltage vacuum circuit breaker includes: a vacuum interrupter and an operating mechanism, and the operating mechanism includes: an electromagnetic coil, a limit plate and a moving contact transmission rod, and confirm the circuit breaker monitoring mechanism, wherein the circuit breaker monitoring mechanism includes: a piezoelectric sensor, an ionization sensor, a thermal conductivity sensor, a displacement sensor and an online communication device, and the displacement sensor is used to monitor the displacement of the moving contact transmission rod, and the piezoelectric sensor, the ionization sensor and the thermal conductivity sensor are all installed in the vacuum interrupter, wherein, The thermal conductivity sensor includes: a resistance wire and a temperature sensor; the transmission displacement analysis module 102 is used to receive a circuit breaker control signal, and send the circuit breaker control signal to the operating mechanism. When the operating mechanism receives the circuit breaker control signal, the electromagnetic coil in the operating mechanism is started, and the electromagnetic coil after being started is used to perform an electromagnetic pushing operation on the moving contact transmission rod to obtain a moving transmission rod. The moving transmission rod is monitored based on a preset monitoring frequency and a displacement sensor. When the moving transmission rod contacts the limit plate in the operating mechanism, the electromagnetic coil in the operating mechanism is closed to obtain a displacement sequence, wherein the displacement sequence includes: displacement values, perform speed analysis on the displacement time series to obtain a displacement fluctuation index and an average displacement speed, calculate the displacement failure rate according to the displacement fluctuation index and the average displacement speed, and compare the displacement failure rate with a preset displacement fault threshold; the arc extinguishing vacuum inspection module 103 is used to perform a vacuum inspection operation on the vacuum arc extinguishing chamber using a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor to obtain an arc extinguishing vacuum index if the displacement failure rate is less than or equal to the displacement fault threshold; the monitoring platform communication module 104 is used to send a pre-constructed safety signal to a pre-constructed circuit breaker monitoring platform using an online communication device if the arc extinguishing vacuum index is less than or equal to the preset vacuum threshold; if the displacement failure rate is greater than the displacement fault threshold or the arc extinguishing vacuum index is greater than the vacuum threshold, send a pre-constructed warning signal to the circuit breaker monitoring platform using an online communication device; when the circuit breaker monitoring platform receives the safety signal or the warning signal, the online monitoring of the high-voltage vacuum circuit breaker is completed.

[0090] In detail, the modules in the intelligent online monitoring system 100 for high-voltage vacuum circuit breakers in the embodiment of the present invention are used in the same manner as described above. Figure 1 The intelligent online monitoring method for high-voltage vacuum circuit breaker described in the invention has the same technical means and can produce the same technical effects, so it will not be repeated here.

[0091] like Figure 3 , which is a schematic diagram of the structure of an electronic device for implementing an intelligent online monitoring method for a high-voltage vacuum circuit breaker provided by an embodiment of the present invention.

[0092] The electronic device 1 may include a processor 10, a memory 11 and a bus 12, and may also include a computer program stored in the memory 11 and executable on the processor 10, such as an intelligent online monitoring method program for a high-voltage vacuum circuit breaker.

[0093] The memory 11 includes at least one type of readable storage medium, and the readable storage medium includes a flash memory, a mobile hard disk, a multimedia card, a card-type memory (for example, an SD or DX memory, etc.), a magnetic memory, a disk, an optical disk, etc. In some embodiments, the memory 11 may be an internal storage unit of the electronic device 1, such as a mobile hard disk of the electronic device 1. In other embodiments, the memory 11 may also be an external storage device of the electronic device 1, such as a plug-in mobile hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (SecureDigital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 1. Further, the memory 11 also includes an internal storage unit of the electronic device 1 and an external storage device. The memory 11 can not only be used to store application software and various types of data installed in the electronic device 1, such as the code of the intelligent online monitoring method program of the high-voltage vacuum circuit breaker, etc., but also can be used to temporarily store data that has been output or is to be output.

[0094] The processor 10 may be composed of an integrated circuit in some embodiments, for example, a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and combinations of various control chips, etc. The processor 10 is the control core (Control Unit) of the electronic device, and uses various interfaces and lines to connect various components of the entire electronic device, and executes or executes programs or modules (such as intelligent online monitoring method programs for high-voltage vacuum circuit breakers, etc.) stored in the memory 11, and calls data stored in the memory 11 to execute various functions of the electronic device 1 and process data.

[0095] The bus 12 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 12 may be divided into an address bus, a data bus, a control bus, etc. The bus 12 is configured to realize connection and communication between the memory 11 and at least one processor 10, etc.

[0096] Figure 3 Only an electronic device with components is shown, and those skilled in the art will understand that Figure 3 The structure shown does not constitute a limitation on the electronic device 1, and may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.

[0097] For example, although not shown, the electronic device 1 may also include a power source (such as a battery) for supplying power to various components. Preferably, the power source may be logically connected to the at least one processor 10 through a power management device, so that the power management device can realize functions such as charging management, discharging management, and power consumption management. The power source may also include one or more DC or AC power sources, recharging devices, power failure detection circuits, power converters or inverters, power status indicators, and other arbitrary components. The electronic device 1 may also include a variety of sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be repeated here.

[0098] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is generally used to establish a communication connection between the electronic device 1 and other electronic devices.

[0099] Optionally, the electronic device 1 may further include a user interface, which may be a display, an input unit (such as a keyboard), or a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, and an OLED (Organic Light-Emitting Diode) touch device. The display may also be appropriately referred to as a display screen or a display unit, which is used to display information processed in the electronic device 1 and to display a visual user interface.

[0100] The intelligent online monitoring method program of the high-voltage vacuum circuit breaker stored in the memory 11 in the electronic device 1 is a combination of multiple instructions. When running in the processor 10, it can achieve: receiving a circuit breaker monitoring instruction, confirming the high-voltage vacuum circuit breaker to be operated based on the circuit breaker monitoring instruction, wherein the high-voltage vacuum circuit breaker includes: a vacuum interrupter and an operating mechanism, and the operating mechanism includes: an electromagnetic coil, a limit plate and a moving contact transmission rod; confirming a circuit breaker monitoring mechanism, wherein the circuit breaker monitoring mechanism includes: a piezoelectric sensor, an ionization sensor, a thermal conductivity sensor, a displacement sensor and an online communication device, and the displacement sensor is used to monitor the displacement of the moving contact transmission rod. , the piezoelectric sensor, the ionization sensor and the thermal conductivity sensor are all installed in the vacuum interrupter, wherein the thermal conductivity sensor includes: a resistance wire and a temperature sensor; receiving the circuit breaker control signal, sending the circuit breaker control signal to the operating mechanism, when the operating mechanism receives the circuit breaker control signal, starting the electromagnetic coil in the operating mechanism, using the electromagnetic coil after starting to perform an electromagnetic pushing operation on the moving contact transmission rod to obtain a moving transmission rod; performing a monitoring operation on the moving transmission rod based on a preset monitoring frequency and a displacement sensor, when the moving transmission rod contacts the limit plate in the operating mechanism, closing the electromagnetic coil in the operating mechanism to obtain a displacement sequence, wherein the displacement sequence includes: displacement values; speed analysis is performed on the displacement time series to obtain a displacement fluctuation index and an average displacement speed; the displacement failure rate is calculated according to the displacement fluctuation index and the average displacement speed, and the displacement failure rate is compared with a preset displacement failure threshold; if the displacement failure rate is less than or equal to the displacement failure threshold, a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor are used to perform a vacuum inspection operation on the vacuum arc extinguishing chamber to obtain an arc extinguishing vacuum index; if the arc extinguishing vacuum index is less than or equal to the preset vacuum threshold, a pre-constructed safety signal is sent to a pre-constructed circuit breaker monitoring platform by an online communication device; if the displacement failure rate is greater than the displacement fault threshold or the arc extinguishing vacuum index is greater than the vacuum threshold, a pre-constructed warning signal is sent to the circuit breaker monitoring platform by an online communication device; when the circuit breaker monitoring platform receives the safety signal or the warning signal, the online monitoring of the high-voltage vacuum circuit breaker is completed.

[0101] Specifically, the specific implementation method of the processor 10 for the above instructions can refer to Figures 1 to 3 The description of the relevant steps in the corresponding embodiments will not be repeated here.

[0102] Furthermore, if the module / unit integrated in the electronic device 1 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0103] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor of an electronic device, the computer program can achieve: receiving a circuit breaker monitoring instruction, and confirming a high-voltage vacuum circuit breaker to be operated based on the circuit breaker monitoring instruction, wherein the high-voltage vacuum circuit breaker includes: a vacuum interrupter and an operating mechanism, and the operating mechanism includes: an electromagnetic coil, a limit plate, and a moving contact transmission rod; confirming a circuit breaker monitoring mechanism, wherein the circuit breaker monitoring mechanism includes: a piezoelectric sensor, an ionization sensor, a thermal conductivity sensor, a displacement sensor, and an online communication device, and the displacement sensor is used to monitor the displacement of the moving contact transmission rod, The piezoelectric sensor, ionization sensor and thermal conductivity sensor are all installed in the vacuum interrupter, wherein the thermal conductivity sensor includes: a resistance wire and a temperature sensor; receiving a circuit breaker control signal, and sending the circuit breaker control signal to an operating mechanism; when the operating mechanism receives the circuit breaker control signal, the electromagnetic coil in the operating mechanism is started, and the electromagnetic coil after being started is used to perform an electromagnetic pushing operation on the moving contact transmission rod to obtain a moving transmission rod; based on a preset monitoring frequency and a displacement sensor, a monitoring operation is performed on the moving transmission rod, and when the moving transmission rod contacts the limit plate in the operating mechanism, the electromagnetic coil in the operating mechanism is closed to obtain a displacement sequence, wherein the displacement sequence includes: displacement values; speed analysis is performed on the displacement time series to obtain a displacement fluctuation index and an average displacement speed; the displacement failure rate is calculated according to the displacement fluctuation index and the average displacement speed, and the displacement failure rate is compared with a preset displacement failure threshold; if the displacement failure rate is less than or equal to the displacement failure threshold, a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor are used to perform a vacuum inspection operation on the vacuum arc extinguishing chamber to obtain an arc extinguishing vacuum index; if the arc extinguishing vacuum index is less than or equal to the preset vacuum threshold, a pre-constructed safety signal is sent to a pre-constructed circuit breaker monitoring platform by an online communication device; if the displacement failure rate is greater than the displacement fault threshold or the arc extinguishing vacuum index is greater than the vacuum threshold, a pre-constructed warning signal is sent to the circuit breaker monitoring platform by an online communication device; when the circuit breaker monitoring platform receives the safety signal or the warning signal, the online monitoring of the high-voltage vacuum circuit breaker is completed.

[0104] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, systems and methods can be implemented in other ways. For example, the system embodiments described above are only illustrative, and actual implementation may have other division methods.

[0105] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0106] In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0107] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. An intelligent online monitoring method for a high-voltage vacuum circuit breaker, characterized in that: The method comprises: receiving a circuit breaker monitoring instruction, confirming a high-voltage vacuum circuit breaker to be operated based on the circuit breaker monitoring instruction, wherein the high-voltage vacuum circuit breaker comprises: a vacuum interrupter and an operating mechanism, and the operating mechanism comprises: an electromagnetic coil, a limit plate and a moving contact transmission rod; confirming a circuit breaker monitoring mechanism, wherein the circuit breaker monitoring mechanism comprises: a piezoelectric sensor, an ionization sensor, a thermal conductivity sensor, a displacement sensor and an online communication device, and the displacement sensor is used to monitor the displacement of the moving contact transmission rod, and the piezoelectric sensor, the ionization sensor and the thermal conductivity sensor are all installed in the vacuum interrupter. , wherein the thermal conductivity sensor includes: a resistance wire and a temperature sensor; receiving a circuit breaker control signal, sending the circuit breaker control signal to an operating mechanism, when the operating mechanism receives the circuit breaker control signal, starting the electromagnetic coil in the operating mechanism, using the started electromagnetic coil to perform an electromagnetic pushing operation on the moving contact transmission rod to obtain a moving transmission rod; performing a monitoring operation on the moving transmission rod based on a preset monitoring frequency and a displacement sensor, when the moving transmission rod contacts a limit plate in the operating mechanism, closing the electromagnetic coil in the operating mechanism to obtain a displacement sequence, wherein the displacement sequence includes: displacement values; speed analysis is performed on the displacement time series to obtain a displacement fluctuation index and an average displacement speed; the displacement failure rate is calculated according to the displacement fluctuation index and the average displacement speed, and the displacement failure rate is compared with a preset displacement failure threshold; if the displacement failure rate is less than or equal to the displacement failure threshold, a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor are used to perform a vacuum inspection operation on the vacuum arc extinguishing chamber to obtain an arc extinguishing vacuum index; if the arc extinguishing vacuum index is less than or equal to the preset vacuum threshold, a pre-constructed safety signal is sent to a pre-constructed circuit breaker monitoring platform by an online communication device; if the displacement failure rate is greater than the displacement fault threshold or the arc extinguishing vacuum index is greater than the vacuum threshold, a pre-constructed warning signal is sent to the circuit breaker monitoring platform by an online communication device; when the circuit breaker monitoring platform receives the safety signal or the warning signal, the online monitoring of the high-voltage vacuum circuit breaker is completed.

2. The intelligent online monitoring method for high-voltage vacuum circuit breaker according to claim 1, characterized in that: The speed analysis of the displacement time series to obtain the displacement fluctuation index and the average displacement speed includes: extracting the first displacement values, where The initial value of The displacement value is confirmed in the displacement sequence. The displacement values ​​and displacement values, among which The displacement value is the same as the The displacement values ​​are adjacent and lag behind The displacement value, The displacement value is the same as the +1 displacement value is adjacent and lags behind +1 displacement value; using the The displacement values ​​and The displacement value is used to calculate the running speed. The calculation formula is as follows: ,in, is the running speed, For the The displacement value, For the The displacement value, is the preset monitoring time interval; The displacement value, The displacement values ​​and Calculate the running acceleration based on the displacement values; The running speed is stored in a pre-built speed memory to obtain a first memory, and the running acceleration is stored in a pre-built acceleration memory to obtain a second memory; the first memory is used as a speed memory, and the second memory is used as an acceleration memory, and I= +1, I as , returns the first steps of displacement values ​​until = -2, read from the first memory The running speed is read from the second memory The running acceleration is: = -2; exploit The running speed and The displacement fluctuation index and average displacement velocity are calculated based on the running acceleration.

3. The intelligent online monitoring method for high-voltage vacuum circuit breaker according to claim 2, characterized in that: The calculation formula of the running acceleration is as follows: ,in, is the running acceleration, For the displacement value.

4. The intelligent online monitoring method for high-voltage vacuum circuit breaker according to claim 3, characterized in that: The utilization The running speed and Calculate the displacement fluctuation index and average displacement speed based on the running acceleration, including: Each of the running accelerations performs the following operations: confirming the absolute acceleration according to the running acceleration, wherein the absolute acceleration is the absolute value of the running acceleration; comparing the absolute acceleration with the preset normal acceleration, and if the absolute acceleration is greater than or equal to the normal acceleration, recording the absolute acceleration as an abnormal acceleration; summarizing the abnormal accelerations to obtain multiple abnormal accelerations, and calculating the abnormal acceleration according to the multiple abnormal accelerations and the normal accelerations; The displacement fluctuation index is calculated based on the running acceleration; The average displacement speed is calculated from the running speed, where the average displacement speed is The average running speed.

5. The intelligent online monitoring method for high-voltage vacuum circuit breaker according to claim 4, characterized in that: The method according to the plurality of abnormal accelerations and The displacement fluctuation index is calculated using the running acceleration, including: The absolute acceleration mean is calculated using the following formula: ,in, is the absolute acceleration mean, for The running acceleration The running acceleration, It means taking the absolute value; the displacement fluctuation index is calculated based on multiple abnormal accelerations and the average of absolute accelerations. The calculation formula is as follows: ,in, is the displacement fluctuation index, is the number of abnormal accelerations among multiple abnormal accelerations, It is the first of multiple abnormal accelerations. An abnormal acceleration, is the normal acceleration, is the hyperbolic tangent function.

6. The intelligent online monitoring method for high-voltage vacuum circuit breaker according to claim 5, characterized in that: The method of calculating the displacement failure rate according to the displacement fluctuation index and the average displacement speed includes: obtaining a plurality of reference displacement data from a pre-built central database, wherein the reference displacement data includes: a plurality of reference speeds, a plurality of reference accelerations, and a storage time; performing the following operations on each of the plurality of reference displacement data: obtaining a reference fluctuation index and a reference average speed based on the plurality of reference speeds and a plurality of reference accelerations in the reference displacement data; and calculating the reference failure rate according to the reference fluctuation index, the reference average speed, the displacement fluctuation index, and the average displacement speed, wherein the calculation formula is as follows: ,in, is the reference failure rate, where and are the average displacement velocity and the reference average velocity, respectively. is a reference fluctuation index; summarizing the reference failure rates to obtain multiple reference failure rates; obtaining the current time, and calculating the displacement failure rate according to the current time, the storage time in the multiple reference displacement data, and the multiple reference failure rates.

7. The intelligent online monitoring method for high-voltage vacuum circuit breaker according to claim 6, characterized in that: The calculation formula of the displacement failure rate is as follows: ,in, is the displacement failure rate, is the current time, is the first of multiple reference failure rates A reference failure rate, is the first of multiple reference failure rates The storage time corresponding to the reference failure rate is is a natural constant, is the number of reference failure rates in the multiple reference failure rates.

8. The intelligent online monitoring method for high-voltage vacuum circuit breaker according to claim 7, characterized in that: The vacuum inspection operation is performed on the vacuum arc chamber by using a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor to obtain an arc extinguishing vacuum index, including: reading the sensing pressure value of the piezoelectric sensor in the vacuum arc chamber; generating a plurality of thermal electrons in the vacuum arc chamber by using the ionization sensor, wherein the vacuum arc chamber includes: residual gas; performing an ionization operation on the residual gas in the vacuum arc chamber by using the plurality of thermal electrons to obtain an ion current, and performing a detection operation on the ion current by using the ionization sensor to obtain a sensing current value; performing a heating operation on the resistance wire in the thermal conductivity sensor, and using a temperature sensor to monitor the surface temperature of the resistance wire in real time, and obtaining a target resistance wire when the surface temperature reaches a preset test temperature; performing a natural heat dissipation operation on the target resistance wire to obtain a heat dissipation resistance wire, wherein a heat dissipation time for performing the natural heat dissipation operation on the target resistance wire is preset; reading the final temperature of the heat dissipation resistance wire by using the temperature sensor, and calculating the sensing thermal conductivity by using the test temperature, the final temperature and the heat dissipation time, and the calculation formula is as follows: ,in, is the sensing thermal conductivity, and are the test temperature and the final temperature, is the heat dissipation time; the arc extinguishing vacuum index is calculated using the sensing pressure value, sensing current value and sensing thermal conductivity.

9. The intelligent online monitoring method for high-voltage vacuum circuit breaker according to claim 8, characterized in that: The calculation formula of the arc extinguishing vacuum index is as follows: ,in, is the arc extinguishing vacuum index, and are the sensing pressure value and the sensing current value respectively.

10. An intelligent online monitoring system for high-voltage vacuum circuit breakers, characterized in that: The system includes: a monitoring mechanism confirmation module, which is used to receive a circuit breaker monitoring instruction, and confirm the high-voltage vacuum circuit breaker to be operated based on the circuit breaker monitoring instruction, wherein the high-voltage vacuum circuit breaker includes: a vacuum interrupter and an operating mechanism, and the operating mechanism includes: an electromagnetic coil, a limit plate and a moving contact transmission rod, and confirms the circuit breaker monitoring mechanism, wherein the circuit breaker monitoring mechanism includes: a piezoelectric sensor, an ionization sensor, a thermal conductivity sensor, a displacement sensor and an online communication device, and the displacement sensor is used to monitor the displacement of the moving contact transmission rod, and the piezoelectric sensor, the ionization sensor and the thermal conductivity sensor are all installed in the vacuum interrupter. , wherein the thermal conductivity sensor includes: a resistance wire and a temperature sensor; a transmission displacement analysis module, which is used to receive a circuit breaker control signal, and send the circuit breaker control signal to an operating mechanism. When the operating mechanism receives the circuit breaker control signal, the electromagnetic coil in the operating mechanism is started, and the electromagnetic coil after being started is used to perform an electromagnetic pushing operation on the moving contact transmission rod to obtain a moving transmission rod, and the moving transmission rod is monitored based on a preset monitoring frequency and a displacement sensor. When the moving transmission rod contacts a limit plate in the operating mechanism, the electromagnetic coil in the operating mechanism is closed to obtain a displacement sequence, wherein the displacement sequence includes: A displacement value is obtained, and a speed analysis is performed on the displacement time series to obtain a displacement fluctuation index and an average displacement speed. The displacement failure rate is calculated according to the displacement fluctuation index and the average displacement speed, and the displacement failure rate is compared with a preset displacement fault threshold. An arc extinguishing vacuum inspection module is used to perform a vacuum inspection operation on the vacuum arc extinguishing chamber using a piezoelectric sensor, an ionization sensor, and a thermal conductivity sensor to obtain an arc extinguishing vacuum index if the displacement failure rate is less than or equal to the displacement fault threshold. A monitoring platform communication module is used to send a pre-constructed safety signal to a pre-constructed circuit breaker monitoring platform using an online communication device if the arc extinguishing vacuum index is less than or equal to the preset vacuum threshold. If the displacement failure rate is greater than the displacement fault threshold or the arc extinguishing vacuum index is greater than the vacuum threshold, a pre-constructed warning signal is sent to the circuit breaker monitoring platform using an online communication device. When the circuit breaker monitoring platform receives the safety signal or the warning signal, the online monitoring of the high-voltage vacuum circuit breaker is completed.

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