Circuit breaker opening and closing speed test system and method

Abstract

The present application relates to the technical field of circuit breaker opening and closing speed testing, and discloses a circuit breaker opening and closing speed testing system and method, which comprises a hydraulic control unit, a measurement unit and a testing analysis unit. The hydraulic control unit is used to apply axial torque to the opening and closing position of the circuit breaker by using a hydraulic system to realize the opening and closing process of the circuit breaker. The measurement unit is used to obtain the transmission distance parameter at the opening and closing position according to a distance sensor, and to start a torque sensor to measure the axial torque data value. The transmission efficiency of the opening and closing action is determined according to the transmission distance parameter and the axial torque data value. The testing analysis unit is used to record the state of each complete opening and closing action at different positions, and to perform real-time dynamic testing analysis according to the transmission efficiency to determine the opening and closing movement speed state. The opening and closing movement speed state includes a normal opening and closing movement speed state and an abnormal opening and closing movement speed state. The display unit is used to display the opening and closing movement speed state result.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker opening and closing speed testing technology, specifically to a circuit breaker opening and closing speed testing system and method. Background Technology

[0002] Over time, circuit breaker opening and closing speed measurement devices have been transformed into multi-channel digital displays; and the opening and closing mechanism has complete mechanical characteristic testing conditions. By constructing a speed testing system for the opening and closing mechanism, it is possible to use precise measurement of the opening and closing speed to evaluate the mechanical performance and arc extinguishing capability of the circuit breaker based on the changes in the opening and closing speed, ensuring that the circuit can be reliably opened or closed under certain voltage and current conditions.

[0003] Speed ​​testing and analysis of the opening and closing mechanism are achieved through a hydraulic system. Because the hydraulic system can provide a large axial torque, it can meet the precise operating force requirements of the circuit breaker during opening and closing, ensuring rapid and accurate control of the opening action. This hydraulic control then completes the process of judging the operating status of the opening and closing switch. In reality, judging the switch's operating status typically requires considering numerous parameters such as opening and closing time, bounce, contact distance, and opening and closing speed. Furthermore, it necessitates the synchronous measurement and rapid analysis of these parameters using various sensors in conjunction with a high-precision operating mechanism to improve operational efficiency. Therefore, this process is both complex and costly.

[0004] Currently, during maintenance, a large amount of test data (closing and opening times, asynchrony times, bounce times and frequency, overshoot time, amplitude, stroke, overtravel, etc.) is required, necessitating professional technical maintenance personnel to review each item one by one. This usually requires relying on statistical methods, such as cluster analysis, to analyze and judge a large number of parameters one by one. Therefore, the existing systematic comprehensive analysis process still relies on high-precision operating mechanisms and increases the system's computing power cost; moreover, there is a lack of a unified standard for adjusting the collected closing and opening speed test results. Summary of the Invention

[0005] The purpose of this invention is to provide a circuit breaker opening and closing speed testing system and method, and to solve the following technical problems:

[0006] How can the precise adjustment process for the opening and closing speed test be achieved by optimizing the mechanical characteristic testing process of the opening and closing speed?

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] The circuit breaker opening and closing speed testing system includes:

[0009] The hydraulic control unit is used to apply axial torque to the opening and closing points of the circuit breaker using the hydraulic system to realize the circuit breaker switching process.

[0010] The measurement unit is used to obtain the transmission distance parameters at the opening and closing positions based on the distance sensor, and to measure the axial torque force data value using the starting torque sensor; and to determine the transmission efficiency of the opening and closing action based on the transmission distance parameters and the axial torque force data value.

[0011] The test and analysis unit is used to record the state of each complete opening and closing action at different locations, and to perform real-time dynamic test and analysis based on transmission efficiency to determine the opening and closing speed status; the opening and closing speed status includes the normal opening and closing speed status and the abnormal opening and closing speed status.

[0012] The display unit is used to display the speed status results of the opening and closing movement.

[0013] Preferably, the hydraulic control unit includes:

[0014] A hydraulic operating mechanism is used to output power by pumping hydraulic oil to a set pressure value according to the hydraulic cylinder.

[0015] A transmission mechanism is used to transmit output power to the opening and closing rotating shaft of a circuit breaker using transmission components.

[0016] The sensing and control mechanism is used to activate the controller and control the starting torque sensor based on the electrical signal that drives the opening and closing contacts to separate and make contact according to the output power.

[0017] Preferably, the measuring unit determines the transmission efficiency of the opening and closing action based on the transmission distance parameters and the axial torque force data values. The transmission distance parameters include the "closing-opening" action distance parameters and the "opening-closing" action distance parameters; the axial torque force data values ​​include the input torque force and the output torque force.

[0018] Specifically, it includes:

[0019] Through formula Calculate the transmission efficiency of the opening and closing actions. ;in, For output torque force, For input torque force; This refers to the transmission distance parameter after the opening and closing action, i.e., the "closing-opening" action distance parameter. The transmission distance parameter is used to set the initial position, i.e., the transmission distance before the opening and closing action is initiated; This refers to the transmission distance parameter after the current opening and closing action is completed, i.e., the "opening-closing" action distance parameter; This is the initial time; The time for initiating the opening and closing action; The time for ending the opening and closing operation; This represents the transmission ratio of the transmission mechanism.

[0020] Preferably, the opening and closing action is to complete one "open-close" and "close-open" action, wherein the closing action from open to close is represented by "open-close", and the opening action from close to open is represented by "close-open"; the process of dynamic test analysis performed by the test analysis unit is as follows:

[0021] To obtain the status information and corresponding time of each opening and closing action completed by the circuit breaker at its current position:

[0022] Through formula Calculate and obtain the state coefficient of the circuit breaker after each opening and closing action in its current position. ;

[0023] in, The period during which the circuit breaker is in the open state (either opening or closing). The start time for opening and closing the circuit breaker. This refers to the opening and closing time of the circuit breaker. This refers to the period during which the circuit breaker is closed when it is operating. This refers to the start time of the circuit breaker's opening and closing. This refers to the closing time of the circuit breaker. The first preset weighting coefficient, The second preset weighting coefficient, and > >0.

[0024] Preferably, the process of determining the opening and closing speed status by performing real-time dynamic testing and analysis based on transmission efficiency is as follows:

[0025] Through formula Calculate and obtain motion velocity state value ;

[0026] in, This represents the total number of opening and closing circuit breakers, and ∈ ; To complete the total number of opening and closing actions, and ∈ ; For the first The first of the opening and closing circuits Transmission efficiency of the next opening and closing action; This represents the average transmission efficiency of standard opening and closing operations; The transmission wear rate is preset to complete the opening and closing actions; The cumulative value of transmission wear rate to complete all opening and closing operations;

[0027] Motion speed state value With state coefficients Compare:

[0028] like ≥ If the opening and closing speed is abnormal, an early warning signal will be generated.

[0029] Preferably, it further includes:

[0030] The speed correction unit is used to analyze and correct abnormal operating speeds of circuit breakers during opening and closing.

[0031] Preferably, the speed correction unit includes:

[0032] when ≥ At that time, the motion speed state set value is based on the historical transmission efficiency. Comparison and judgment and Size:

[0033] like < If the current transmission efficiency is low, then further:

[0034] like ≤ If the current opening and closing speed is abnormally low, the contact gap can be reduced or the charging voltage can be increased to correct the speed.

[0035] like > If the current opening and closing speed is abnormally high, the contact gap can be increased or the charging voltage can be reduced to correct the speed.

[0036] like ≥ If the current transmission efficiency is high, then further:

[0037] like > If the current opening and closing speed is abnormally high, the contact gap can be increased or the charging voltage can be reduced to correct the speed.

[0038] Otherwise, speed correction will not be performed.

[0039] The method for testing the opening and closing speed of circuit breakers involves using a circuit breaker opening and closing speed testing system to complete the testing process, including:

[0040] S1. The circuit breaker switching process is achieved by applying axial torque to the opening and closing points of the circuit breaker through the hydraulic control unit using the hydraulic system.

[0041] S2. The measuring unit obtains the transmission distance parameters at the opening and closing positions based on the distance sensor, and starts the torque sensor to measure the axial torque force data value; and determines the transmission efficiency of the opening and closing action based on the transmission distance parameters and the axial torque force data value.

[0042] S3. Based on the test analysis unit, record the status of each complete opening and closing action at different positions, and perform real-time dynamic test analysis based on the transmission efficiency to determine the speed status of opening and closing movement.

[0043] S4. Use the speed correction unit to adjust the abnormal opening and closing speed status of the circuit breaker;

[0044] S5. Display the opening and closing speed status results through the display unit.

[0045] The beneficial effects of this invention are:

[0046] (1) The present invention determines the transmission efficiency by setting a measurement unit in combination with transmission distance parameters and axial torque force data values; the transmission efficiency can reflect the opening and closing speed status to a certain extent. The magnitude of the transmission efficiency is used as a prompt value to optimize the opening and closing speed signal, reduce the action delay and signal feedback time delay in the transmission process, reduce the configuration and use of various sensors, and solve the above-mentioned speed calculation inaccuracy problem while reducing the system's calculation pressure.

[0047] (2) The present invention uses a test analysis unit to record the status information of the circuit breaker at different positions after each complete action of opening and closing. Based on the transmission efficiency data provided by the measurement unit, the opening and closing actions are tested and analyzed in real time. In order to obtain the status information of the circuit breaker at the current position after each complete action of opening and closing and the corresponding time, the transmission distance parameters and axial torque force data values ​​at the opening and closing positions are obtained.

[0048] (3) Set up a test analysis unit to record the status information of the circuit breaker after each complete action of opening and closing at different positions. Based on the transmission efficiency data provided by the measurement unit, perform real-time dynamic test analysis on the opening and closing action. By comparing the transmission efficiency and other parameters of the opening and closing action under different positions and working conditions, determine whether the opening and closing speed is in a normal state, and promptly issue feedback warnings for abnormal closing speed, thus completing the accurate analysis process of the opening and closing speed test.

[0049] (4) By setting up a speed correction unit, the abnormal motion speed state identified in the opening and closing of the circuit is completed, and the situation of the abnormal motion speed state is adjusted and analyzed to realize speed correction and complete the precise adjustment process of the opening and closing speed test.

[0050] Of course, any product implementing this invention does not necessarily need to achieve all the advantages described above at the same time. Attached Figure Description

[0051] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a unit diagram of the circuit breaker opening and closing speed testing system of the present invention;

[0053] Figure 2 This is a flowchart illustrating the circuit breaker opening and closing speed testing method of the present invention. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] Please see Figure 1 As shown, the present invention is a circuit breaker opening and closing speed testing system, comprising:

[0056] The hydraulic control unit is used to apply axial torque to the opening and closing points of the circuit breaker using the hydraulic system to realize the circuit breaker switching process.

[0057] The measurement unit is used to obtain the transmission distance parameters at the opening and closing positions based on the distance sensor, and to measure the axial torque force data value using the starting torque sensor; and to determine the transmission efficiency of the opening and closing action based on the transmission distance parameters and the axial torque force data value.

[0058] The test and analysis unit is used to record the state of each complete opening and closing action at different locations, and to perform real-time dynamic test and analysis based on transmission efficiency to determine the opening and closing speed status; the opening and closing speed status includes the normal opening and closing speed status and the abnormal opening and closing speed status.

[0059] The display unit is used to display the speed status results of the opening and closing movement.

[0060] In the above technical solution, a hydraulic control unit is set up, and a hydraulic pump delivers pressurized hydraulic oil to a hydraulic cylinder. The hydraulic cylinder acts as an actuator, driving its transmission mechanism to perform linear or rotary motion, thereby applying axial torque to the circuit breaker's opening and closing points to complete the circuit breaker's opening and closing process. A measurement unit uses distance and torque sensors to acquire transmission distance parameters and axial torque data values ​​at the opening and closing positions. The distance sensor measures the positional change of the transmission components during the circuit breaker's opening and closing process to obtain transmission distance parameters; the torque sensor directly measures the torque force applied to the transmission components by the hydraulic system during the opening and closing process. These data are transmitted to a test and analysis unit by the measurement unit for further analysis and processing: based on the transmission distance parameters and axial torque data values, the transmission efficiency of the opening and closing action can be calculated, i.e., the ratio of the actual output mechanical work to the hydraulic input work of the hydraulic system, reflecting the transmission performance of the hydraulic system.

[0061] A test analysis unit is set up to record the status information of the circuit breaker after each complete opening and closing action at different locations. Based on the transmission efficiency data provided by the measurement unit, the opening and closing actions are dynamically tested and analyzed in real time. By comparing the transmission efficiency and other parameters of the opening and closing actions under different locations and operating conditions, the test analysis unit can determine whether the opening and closing speed is within the normal range. If the transmission efficiency decreases or the speed changes abnormally, such as being too fast, too slow, or uneven, the test analysis unit will identify the abnormal opening and closing speed state and issue corresponding alarms or prompts for timely maintenance and adjustment. A display unit is also set up to show the results of the opening and closing speed status. Based on the displayed opening and closing speed status, the optimization results and reminders of the mechanical characteristic test process of the opening and closing speed can be intuitively analyzed, and precise adjustments to the opening and closing speed test can be made.

[0062] As one embodiment of the present invention, the hydraulic control unit includes:

[0063] A hydraulic operating mechanism is used to output power by pumping hydraulic oil to a set pressure value according to the hydraulic cylinder.

[0064] A transmission mechanism is used to transmit output power to the opening and closing rotating shaft of a circuit breaker using transmission components.

[0065] The sensing and control mechanism is used to activate the controller and control the starting torque sensor based on the electrical signal that drives the opening and closing contacts to separate and make contact according to the output power.

[0066] In the above technical solution, the circuit breaker opening and closing switch control process is realized through a hydraulic control unit; specifically, the following structures are set up: a hydraulic operator is set up to output power to the hydraulic oil in the hydraulic cylinder, and this power value determines the set pressure value to ensure the stability of the output power; a transmission mechanism is set up to ensure the stable transmission of the output power, specifically by using transmission components to transmit the output power to the opening and closing rotating shaft of the circuit breaker; a sensor control mechanism is set up to determine the start controller to drive the torque sensor to start and output the axial torque force data value based on the electrical signal of the output power.

[0067] In one embodiment of the present invention, the measuring unit determines the transmission efficiency of the opening and closing action based on the transmission distance parameters and the axial torque force data value. The transmission distance parameters include the "closing-opening" action distance parameters and the "opening-closing" action distance parameters; the axial torque force data value includes the input torque force and the output torque force.

[0068] Specifically, it includes:

[0069] Through formula Calculate the transmission efficiency of the opening and closing actions. ;in, For output torque force, For input torque force; This refers to the transmission distance parameter after the opening and closing action, i.e., the "closing-opening" action distance parameter. The transmission distance parameter is used to set the initial position, i.e., the transmission distance before the opening and closing action is initiated; This refers to the transmission distance parameter after the current opening and closing action is completed, i.e., the "opening-closing" action distance parameter; This is the initial time; The time for initiating the opening and closing action; The time for ending the opening and closing operation; This represents the transmission ratio of the transmission mechanism.

[0070] In the above technical solution, the measuring unit determines the transmission efficiency by combining the transmission distance parameter and the axial torque force data value. Transmission efficiency can reflect the opening and closing speed status to a certain extent. However, due to the action delay and signal feedback time delay during the transmission process, the directly measured opening and closing speed has problems such as inaccuracy and poor matching with the actual opening and closing speed. This invention optimizes the opening and closing speed signal by using the magnitude of the transmission efficiency as an indication value, reducing the configuration and use of various sensors, and solving the aforementioned problem of inaccurate speed calculation while reducing the computational burden on the system. The transmission efficiency value is obtained through a calculation formula, specifically... Calculate the transmission efficiency of the opening and closing actions. By judging the "combination-discontinuation" action distance parameter of the transmission distance parameter. Set the transmission distance parameters for the initial position. and the distance parameters of the "separation-combination" action. The relationship between time changes is determined by recording the absolute value of the distance parameter change during the dynamic opening and closing process from the initial position to the opening. ; and record the absolute value of the change in the distance parameter from the position after the dynamic opening and closing of the circuit breaker to the contact opening and closing action. The transmission efficiency is determined by the ratio of the distance change over a time range to the input and output torque. Under normal conditions, the transmission efficiency should remain within a relatively stable range. If the transmission efficiency suddenly drops, the transmission system may have malfunctioned, such as increased friction or wear of parts, which will lead to a slowdown in the opening and closing speed. Conversely, if the transmission efficiency suddenly increases, the load on the transmission system will suddenly decrease, which will lead to a faster opening and closing speed. Therefore, the transmission efficiency can serve as a more sensitive indicator parameter.

[0071] In one embodiment of the present invention, the opening and closing action is to complete one "open-close" and "close-open" action, where "open-close" represents the closing action from open to closed, and "close-open" represents the opening action from closed to open; the process of dynamic test analysis performed by the test analysis unit is as follows:

[0072] To obtain the status information and corresponding time of each opening and closing action completed by the circuit breaker at its current position:

[0073] Through formula Calculate and obtain the state coefficient of the circuit breaker after each opening and closing action in its current position. ;

[0074] in, The period during which the circuit breaker is in the open state (either opening or closing). The start time for opening and closing the circuit breaker. This refers to the opening and closing time of the circuit breaker. This refers to the period during which the circuit breaker is closed when it is operating. This refers to the start time of the circuit breaker's opening and closing. This refers to the closing time of the circuit breaker. The first preset weighting coefficient, The second preset weighting coefficient, and > >0.

[0075] In the above technical solution, the closing action from opening to closing is represented by "open-close," and the opening action from closing to opening is represented by "close-open." "Open-close" and "close-open" are used to provide feedback on the dynamic process of completing one opening and closing action. The state coefficient for completing one opening and closing action is obtained through dynamic testing and analysis by the test and analysis unit. This state coefficient can provide feedback on the standard state of action completion and can serve as a standard value for subsequent comparison of the opening and closing speed states. Specifically, this is achieved through the formula... Calculate and obtain the state coefficient of the circuit breaker after each opening and closing action in its current position. The state coefficient for each completed opening and closing action is calculated using the state values ​​of the operation during the open and closed periods. In normal time conditions, the state value that can be used as the standard opening and closing action is denoted as: It is necessary to explain the first preset weighting coefficient. Second preset weighting coefficient These are set to indicate the relative weight of the time spent on actions during the opening and closing phases of the circuit breaker. This weighting is determined based on the actual number of closing and opening coils and the linkage buffer distance. Generally, the more closing coils and the longer the linkage buffer distance, the greater the weighting and the larger the weighting coefficient.

[0076] As one embodiment of the present invention, the process of determining the opening and closing speed state by performing real-time dynamic testing and analysis based on transmission efficiency is as follows:

[0077] Through formula Calculate and obtain motion velocity state value ;

[0078] in, This represents the total number of opening and closing circuit breakers, and ∈ ; To complete the total number of opening and closing actions, and ∈ ; For the first The first of the opening and closing circuits Transmission efficiency of the next opening and closing action; This represents the average transmission efficiency of standard opening and closing operations; The transmission wear rate is preset to complete the opening and closing actions; The cumulative value of transmission wear rate to complete all opening and closing operations;

[0079] Motion speed state value With state coefficients Compare:

[0080] like ≥ If the opening and closing speed is abnormal, an early warning signal will be generated.

[0081] In the above technical solution, since the magnitude of the change in transmission efficiency can reflect the change in the opening and closing speed, the state of the opening and closing speed can be determined through real-time dynamic testing and analysis of the transmission efficiency; specifically, this can be achieved through the formula... Calculate and obtain motion velocity state value Using the historical average transmission efficiency as a comparison, the changes in transmission efficiency based on the cumulative number of circuit breaker openings and closings are obtained. Furthermore, this speed state is affected by delays in all opening and closing operations, and the transmission efficiency is mainly influenced by the cumulative wear of the transmission components during operation. The ratio of transmission efficiency to transmission wear rate reflects the speed state of the opening and closing operation; therefore, the transmission wear rate... The smaller the value, the higher the motion velocity state value. The larger the value, the lower the velocity state value. The smaller the value. Among these, the transmission wear rate... This refers to the amount of wear on transmission materials per unit time or unit stroke, usually expressed as volumetric wear rate or mass wear rate. It is determined by the motion speed state value. Compared with the standard value of the state coefficient ( The system performs size comparison analysis to determine whether there are any abnormalities in the opening and closing speed status, and generates corresponding early warning signals.

[0082] As one embodiment of the present invention, it further includes:

[0083] The speed correction unit is used to analyze and correct abnormal operating speeds of circuit breakers during opening and closing.

[0084] In the above technical solution, a speed correction unit is set up to complete the abnormal motion speed state identified during opening and closing, and to adjust and analyze the situation of the abnormal motion speed state to achieve speed correction.

[0085] As one embodiment of the present invention, the speed correction unit includes:

[0086] when ≥ At that time, the motion speed state set value is based on the historical transmission efficiency. Comparison and judgment and Size:

[0087] like < If the current transmission efficiency is low, then further:

[0088] like ≤ If the current opening and closing speed is abnormally low, the contact gap can be reduced or the charging voltage can be increased to correct the speed.

[0089] like > If the current opening and closing speed is abnormally high, the contact gap can be increased or the charging voltage can be reduced to correct the speed.

[0090] like ≥ If the current transmission efficiency is high, then further:

[0091] like > If the current opening and closing speed is abnormally high, the contact gap can be increased or the charging voltage can be reduced to correct the speed.

[0092] Otherwise, speed correction will not be performed.

[0093] In the above technical solution, the speed correction unit further adjusts the situation when abnormal motion speed occurs: [The following is a separate, unrelated sentence:] Determine... ≥ At that time, the motion speed state set value is based on the historical transmission efficiency. Then compare and judge and The size; first, the ranges of the set value and the standard value are divided. < If so, it is determined that the current transmission efficiency is low. ≥ If the transmission efficiency is high, then further adjustments are made for different transmission efficiencies. When the transmission efficiency is low, the current motion speed state value and the set value are further compared. ≤ If the current opening and closing speed is abnormally low, an acceleration operation is required. This can be achieved by reducing the contact gap or increasing the charging voltage to correct the speed increase. > If the current opening and closing speed is abnormally high, a speed reduction operation is required. This can be achieved by widening the contact gap or reducing the charging voltage. Conversely, when the transmission efficiency is high, it is known in advance that the current speed value will not be less than the set value. When it equals the set value, no speed correction is needed. > If the current opening and closing speed is abnormally high, a speed reduction operation is required. This can be achieved by increasing the contact gap or reducing the charging voltage to correct the speed reduction.

[0094] This invention also includes a method for testing the opening and closing speed of a circuit breaker; please refer to [link / reference]. Figure 2 As shown, the specific steps of this method are to complete the circuit breaker opening and closing speed test process through a circuit breaker opening and closing speed test system, including:

[0095] S1. The circuit breaker switching process is achieved by applying axial torque to the opening and closing points of the circuit breaker through the hydraulic control unit using the hydraulic system.

[0096] S2. The measuring unit obtains the transmission distance parameters at the opening and closing positions based on the distance sensor, and starts the torque sensor to measure the axial torque force data value; and determines the transmission efficiency of the opening and closing action based on the transmission distance parameters and the axial torque force data value.

[0097] S3. Based on the test analysis unit, record the status of each complete opening and closing action at different positions, and perform real-time dynamic test analysis based on the transmission efficiency to determine the speed status of opening and closing movement.

[0098] S4. Use the speed correction unit to adjust the abnormal opening and closing speed status of the circuit breaker;

[0099] S5. Display the opening and closing speed status results through the display unit.

[0100] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the embodiments of apparatus, devices, and non-volatile computer storage media are basically similar to the method embodiments, so the descriptions are relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0101] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended documents. In some cases, the actions or steps described in this application may be performed in a different order than that shown in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0102] The above content is merely an example and illustration of the concept of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined in this application, they should all fall within the protection scope of the present invention.

Claims

1. A circuit breaker opening and closing speed testing system, characterized in that, include: The hydraulic control unit is used to apply axial torque to the opening and closing points of the circuit breaker using the hydraulic system to realize the circuit breaker switching process. The measurement unit is used to obtain the transmission distance parameters at the opening and closing positions based on the distance sensor, and to measure the axial torque force data value using the starting torque sensor; and to determine the transmission efficiency of the opening and closing action based on the transmission distance parameters and the axial torque force data value. The measuring unit determines the transmission efficiency of the opening and closing actions based on the transmission distance parameters and axial torque force data values. The transmission distance parameters include the "closing-opening" action distance parameters and the "opening-closing" action distance parameters; the axial torque force data values ​​include the input torque force and the output torque force. Specifically, it includes: Through formula Calculate the transmission efficiency of the opening and closing actions. ;in, For output torque force, For input torque force; This refers to the transmission distance parameter after the opening and closing action, i.e., the "closing-opening" action distance parameter. The transmission distance parameter is used to set the initial position, i.e., the transmission distance before the opening and closing action is initiated; This refers to the transmission distance parameter after the current opening and closing action is completed, i.e., the "opening-closing" action distance parameter; This is the initial time; The time for initiating the opening and closing action; The time for ending the opening and closing operation; The transmission ratio of the transmission mechanism; The test and analysis unit is used to record the state of each complete opening and closing action at different locations, and to perform real-time dynamic test and analysis based on transmission efficiency to determine the opening and closing speed state; the opening and closing speed state includes the normal opening and closing speed state and the abnormal opening and closing speed state. The display unit is used to display the speed status results of the opening and closing movement.

2. The circuit breaker opening and closing speed testing system according to claim 1, characterized in that, The hydraulic control unit includes: A hydraulic operating mechanism is used to output power by pumping hydraulic oil to a set pressure value according to the hydraulic cylinder. A transmission mechanism is used to transmit output power to the opening and closing rotating shaft of a circuit breaker using transmission components. The sensing and control mechanism is used to activate the controller and control the starting torque sensor based on the electrical signal that drives the opening and closing contacts to separate and make contact according to the output power.

3. The circuit breaker opening and closing speed testing system according to claim 1, characterized in that, The opening and closing action is to complete one "open-close" and "close-open" action, where "open-close" represents the closing action from open to closed, and "close-open" represents the opening action from closed to open; the dynamic test and analysis process performed by the test and analysis unit is as follows: To obtain the status information and corresponding time of each opening and closing action completed by the circuit breaker at its current position: Through formula Calculate and obtain the state coefficient of the circuit breaker after each opening and closing action in its current position. ; in, The period during which the circuit breaker is in the open state (either opening or closing). This refers to the start time of the circuit breaker opening / closing. This refers to the opening and closing time of the circuit breaker. This refers to the period during which the circuit breaker is closed when it is operating. This refers to the start time of the circuit breaker's opening and closing. This refers to the closing time of the circuit breaker. The first preset weighting coefficient, The second preset weighting coefficient, and > >

0.

4. The circuit breaker opening and closing speed testing system according to claim 3, characterized in that, The process of determining the opening and closing speed status by performing real-time dynamic testing and analysis based on transmission efficiency is as follows: Through formula Calculate and obtain motion velocity state value ; in, This represents the total number of opening and closing circuit breakers, and ∈ ; To complete the total number of opening and closing actions, and ∈ ; For the first The first of the opening and closing circuits Transmission efficiency of the next opening and closing action; This represents the average transmission efficiency of standard opening and closing operations; The transmission wear rate is preset to complete the opening and closing actions; The cumulative value of transmission wear rate to complete all opening and closing operations; Motion speed state value With state coefficients Compare: like ≥ If the opening and closing speed is abnormal, an early warning signal will be generated.

5. The circuit breaker opening and closing speed testing system according to claim 4, characterized in that, Also includes: The speed correction unit is used to analyze and correct abnormal operating speeds of circuit breakers during opening and closing.

6. The circuit breaker opening and closing speed testing system according to claim 5, characterized in that, The speed correction unit includes: when ≥ At that time, the motion speed state set value is based on the historical transmission efficiency. Comparison and judgment and Size: like < If the current transmission efficiency is low, then further: like ≤ If the current opening and closing speed is abnormally low, the contact gap can be reduced or the charging voltage can be increased to correct the speed. like > If the current opening and closing speed is abnormally high, the contact gap can be increased or the charging voltage can be reduced to correct the speed. like ≥ If the current transmission efficiency is high, then further: like > If the current opening and closing speed is abnormally high, the contact gap can be increased or the charging voltage can be reduced to correct the speed. Otherwise, speed correction will not be performed.

7. A method for testing the opening and closing speed of a circuit breaker, characterized in that, The method completes the circuit breaker opening and closing speed test process using the circuit breaker opening and closing speed test system as described in any one of claims 1-6, including: S1. The circuit breaker switching process is achieved by applying axial torque to the opening and closing points of the circuit breaker through the hydraulic control unit using the hydraulic system. S2. The measuring unit obtains the transmission distance parameters at the opening and closing positions based on the distance sensor, and starts the torque sensor to measure the axial torque force data value; and determines the transmission efficiency of the opening and closing action based on the transmission distance parameters and the axial torque force data value. S3. Based on the test analysis unit, record the status of each complete opening and closing action at different positions, and perform real-time dynamic test analysis based on the transmission efficiency to determine the speed status of opening and closing movement. S4. Use the speed correction unit to adjust the abnormal opening and closing speed status of the circuit breaker; S5. Display the opening and closing speed status results through the display unit.

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