Circuit Breaker Performance Detection Method, Device, Equipment and Computer Storage Medium

Abstract

The present application discloses a circuit breaker performance detection method, device, equipment and computer storage medium. The circuit breaker performance detection method includes: collecting initial motion data of a target component during the opening or closing process of the circuit breaker; wherein the target component is a moving contact included in the circuit breaker or a component linked to the moving contact, and the initial motion data includes P initial rotational speed data, where P is an integer greater than 1; determining Q target rotational speed data from the P initial rotational speed data, the target rotational speed data being the maximum value, local extreme value or initial rotational speed data equal to the preset rotational speed data among the P initial rotational speed data, and Q being an integer greater than 1 and less than or equal to P; detecting the performance of the circuit breaker according to the Q target rotational speed data. The embodiments of the present application avoid the time-consuming and laborious problems brought about by manually detecting the mechanical performance of the circuit breaker regularly, and help to timely detect the situation of circuit breaker performance attenuation, ensuring the reliability of the circuit breaker operation.

Description

Technical Field

[0001] This application belongs to the technical field of electrical appliances, and particularly relates to a method, device, equipment and computer storage medium for detecting the performance of a circuit breaker. Background Art

[0002] A circuit breaker generally refers to an electrical appliance used to connect, carry, and disconnect a certain current, and it can connect and disconnect the circuit through the opening and closing of a pair of contacts composed of a moving contact and a static contact. During the opening and closing operation of the circuit breaker, mechanical performance attenuation generally occurs, which in turn leads to a reduction in the current-carrying capacity and breaking capacity.

[0003] In the prior art, manual periodic detection of the mechanical performance of the circuit breaker is mostly adopted, and this manual periodic detection method has the defect of being time-consuming and laborious. Summary of the Invention

[0004] Embodiments of this application provide a method, device, equipment and computer storage medium for detecting the performance of a circuit breaker to solve the problem of time-consuming and laborious caused by manually detecting the mechanical performance of the circuit breaker in the prior art.

[0005] In a first aspect, embodiments of this application provide a method for detecting the performance of a circuit breaker, and the method includes:

[0006] Collect the initial motion data of the target component during the opening or closing of the circuit breaker; wherein, the target component is the moving contact included in the circuit breaker or a component linked to the moving contact, and the initial motion data includes P initial rotational speed data, and P is an integer greater than 1;

[0007] Determine Q target rotational speed data from the P initial rotational speed data, where the target rotational speed data is the maximum value, local extreme value, or the initial rotational speed data equal to the preset rotational speed data among the P initial rotational speed data, and Q is an integer greater than 1 and less than or equal to P;

[0008] Detect the performance of the circuit breaker according to the Q target rotational speed data.

[0009] In a second aspect, embodiments of this application provide a device for detecting the performance of a circuit breaker, and the device includes:

[0010] A collection module, configured to collect the initial motion data of the target component during the opening or closing of the circuit breaker; wherein, the target component is the moving contact included in the circuit breaker or a component linked to the moving contact, and the initial motion data includes P initial rotational speed data, and P is an integer greater than 1;

[0011] A determination module, configured to determine Q target rotational speed data from P initial rotational speed data, where the target rotational speed data is the maximum value, local extreme value, or the initial rotational speed data equal to a preset rotational speed data among the P initial rotational speed data, and Q is an integer greater than 1 and less than or equal to P;

[0012] A detection module, configured to detect the performance of the circuit breaker according to the Q target rotational speed data.

[0013] In a third aspect, an embodiment of the present application provides an electronic device, including: a processor and a memory storing computer program instructions;

[0014] When the processor executes the computer program instructions, the above-mentioned circuit breaker performance detection method is implemented.

[0015] In a fourth aspect, an embodiment of the present application provides a computer storage medium, on which computer program instructions are stored, and when the computer program instructions are executed by a processor, the above-mentioned circuit breaker performance detection method is implemented.

[0016] The circuit breaker performance detection method provided by the embodiment of the present application collects the initial motion data of the target component during the opening or closing process of the circuit breaker. The initial motion data includes P initial rotational speed data, determines Q target rotational speed data from the P initial rotational speed data, where the target rotational speed data is the maximum value, local extreme value, or the initial rotational speed data equal to a preset rotational speed data among the P initial rotational speed data, and detects the performance of the circuit breaker according to the Q target rotational speed data. The embodiment of the present application can realize the automatic detection of the circuit breaker performance by processing the collected initial motion data, avoiding the time-consuming and laborious problem brought by manually detecting the mechanical performance of the circuit breaker regularly; at the same time, it can detect during the operation of the circuit breaker to timely discover the attenuation of the circuit breaker performance and ensure the reliability of the circuit breaker operation. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

[0018] Figure 1 is a structural example diagram of a circuit breaker;

[0019] Figure 2 is a structural example diagram of a circuit that can be used to sample sensing signals;

[0020] Figure 3 is a schematic flowchart of the circuit breaker performance detection method provided by the embodiment of the present application;

[0021] Figure 4 It is an example diagram of the rotational speed-time curve obtained during the opening process of the circuit breaker;

[0022] Figure 5 It is an example diagram of the rotation angle-time curve obtained during the opening process of the circuit breaker;

[0023] Figure 6 It is an example diagram of the rotational speed-time curve obtained during the closing process of the circuit breaker;

[0024] Figure 7 It is an example diagram of the rotation angle-time curve obtained during the closing process of the circuit breaker;

[0025] Figure 8 It is a schematic structural diagram of the circuit breaker performance detection device provided by the embodiment of the present application;

[0026] Figure 9 It is a schematic structural diagram of the electronic device provided by the embodiment of the present application. Detailed implementation manners

[0027] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.

[0028] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, elements defined by the statement "including..." do not exclude the existence of additional identical elements in the process, method, article or device including the elements.

[0029] To solve the problems of the prior art, the embodiment of the present application provides a circuit breaker performance detection method, device, equipment and computer storage medium.

[0030] As Figure 1 shown, Figure 1It is a structural example diagram of a circuit breaker, which may include a static contact 11, a moving contact 12, a contact spring 13, a sensor 14, a main shaft 15, a tension spring 16, and a energy storage spring 17.

[0031] Among them, the circuit breaker can connect and disconnect the circuit by separating or closing the contact pair composed of the static contact 11 and the moving contact 12.

[0032] The moving contact 12 can be installed on a corresponding support member. The main shaft 15 rotates to push the linkage structure to drive the support member, so as to realize the movement of the moving contact 12 relative to the static contact 11.

[0033] The energy storage system in the circuit breaker drives the main shaft 15 to rotate through the linkage structure, transfers the elastic potential energy stored in the energy storage spring 17 to the contact spring 13 and the tension spring 16, and realizes the closing operation of the contact pair.

[0034] The energy release of the contact spring 13 and the tension spring 16 drives the main shaft 15 to rotate, and then realizes the rapid separation of the contact pair through the intermediate linkage structure.

[0035] A sensor 14 can be installed on the main shaft 15. The sensor 14 can be a rotational speed sensor, an angular displacement sensor, an acceleration sensor, etc., and can be selected according to the actual situation. When the main shaft 15 rotates, the sensor 14 can output the collected sensing signals, and these sensing signals can be used to indicate the motion data of the main shaft 15.

[0036] Of course, in actual applications, the sensor 14 can also be installed at other positions. For example, the sensor 14 can be installed on the moving contact 12, or on other linkage components that are linked with the moving contact 12, such as the transmission components between the main shaft 15 and the moving contact 12.

[0037] For the sake of simplicity of description, the following mainly takes the sensor 14 installed on the main shaft 15 as an example for illustration.

[0038] The process of the sensor 14 collecting the sensing signals can be carried out continuously. In actual applications, when detecting the performance of the circuit breaker, it may be necessary to use the sensing signals collected when the main shaft 15 rotates. Therefore, in one example, after the main shaft 15 starts to rotate, the above-mentioned sensing signals can be sampled, recorded, and analyzed.

[0039] This process can be carried out through, such as Figure 2The circuit shown is implemented. Specifically, in some circuit breakers, a sampling resistor 21 can be set in the control power line of the shunt trip or closing coil, and an adjustment and amplification unit 22 is used to rectify and amplify the voltage signal on the sampling resistor 21 as the sampling trigger signal for the sensor 24. The sampling trigger signal can be input to the processing unit 23, and after being triggered, the processing unit 23 can sample and record the sensing signal of the sensor 24.

[0040] In this way, the sampling record output by the processing unit 23 can cover the separation or closing action process of the above-mentioned contact pair.

[0041] Next, the circuit breaker performance detection method provided by the embodiments of the present application will be introduced.

[0042] Figure 3 The flowchart of the circuit breaker performance detection method provided by an embodiment of the present application is shown. As Figure 3 shown, the circuit breaker performance detection method includes:

[0043] Step 301, collect the initial motion data of the target component during the opening or closing of the circuit breaker; wherein, the target component is the moving contact included in the circuit breaker or a component linked to the moving contact, and the initial motion data includes P initial rotational speed data, and P is an integer greater than 1;

[0044] Step 302, determine Q target rotational speed data from the P initial rotational speed data, where the target rotational speed data is the maximum value, local extreme value, or the initial rotational speed data equal to the preset rotational speed data among the P initial rotational speed data, and Q is an integer greater than 1 and less than or equal to P;

[0045] Step 303, detect the performance of the circuit breaker according to the Q target rotational speed data.

[0046] As shown above, the circuit breaker can connect and disconnect the circuit by the separation and combination of the contact pair composed of the moving contact and the static contact. Correspondingly, during the operation of the circuit breaker, there can be an opening and a closing process. The opening process can be considered as the process of the moving contact separating from the static contact; while the closing process can be considered as the process of the moving contact closing with the static contact.

[0047] Combined with the description of the circuit breaker example above, the circuit breaker can include a moving contact, a main shaft, and related transmission components, and there is a certain linkage relationship among these components. The motion data of each component can be converted into the motion data of the moving contact by comparing fixed dimensions or transmission parameters.

[0048] In this embodiment, the target component may be a moving contact, or a linkage component whose corresponding motion parameters can be used to reflect the motion of the moving contact. For the sake of simplicity in description, the following mainly takes the main shaft in a circuit breaker as an example of the target component for illustration.

[0049] It is easy to understand that the motion of the target component can be characterized by corresponding motion parameters during the motion process. For example, the motion parameters may be rotational speed, rotation angle, acceleration, and so on. The data of different motion parameters can be collected by corresponding types of sensors.

[0050] In this embodiment, the rotational speed of the target component can be collected, and these rotational speeds can be represented by the above-mentioned initial motion data.

[0051] For example, a rotational speed sensor can be arranged on the main shaft, and the rotational speed sensor can collect the rotational speed data of the main shaft at a certain collection frequency. During the opening or closing process of the circuit breaker, there may be multiple pieces of rotational speed data of the main shaft collected by the rotational speed sensor.

[0052] Generally speaking, among the above-mentioned P pieces of initial rotational speed data, there may be some rotational speed data corresponding to specific scenarios. For example, it may be the rotational speed data corresponding to the just-separated point of the moving contact, or the rotational speed data corresponding to the position where the moving contact reaches the maximum rotation angle, and so on.

[0053] These rotational speed data under specific scenarios can be called target rotational speed data. In practical applications, the target rotational speed data can be determined by characteristics such as the values or change trends of the P pieces of initial rotational speed data.

[0054] Specifically, in this embodiment, Q pieces of target rotational speed data can be determined from the P pieces of initial rotational speed data. Among these Q pieces of target rotational speed data, a certain target rotational speed data can be the maximum value, local extreme value, or the initial rotational speed data equal to the preset rotational speed data among the P pieces of initial rotational speed data.

[0055] As Figure 4 shown, in order to more intuitively understand the selection process of the above-mentioned target rotational speed data, a rotational speed - time curve graph can be combined to illustrate the selection methods of some types of target rotational speed data by way of example.

[0056] It is easy to understand that each piece of initial rotational speed data will have a corresponding collection time.

[0057] The initial motion data may include the multiple rotational speed data collected by the above-mentioned rotational speed sensor, and the rotational speed data collected by the rotational speed sensor can correspond to the initial rotational speed data. In other words, in step 301, the collected initial motion data may include multiple pieces of initial rotational speed data, and each piece of initial rotational speed data can be associated with a collection time.

[0058] It is easy to understand that the above rotational speed data can be a specific rotational speed value or an electrical signal expression form of the rotational speed, that is, a rotational speed signal value.

[0059] Generally speaking, each initial rotational speed data can correspond to a collection time, which can be a specific collection time provided by the above-mentioned processing unit, etc., or a time defined according to the collection sequence and collection period of each initial rotational speed data.

[0060] For example, P initial rotational speed data usually have corresponding collection sequences, and the collection time interval between two adjacent initial rotational speed data can be a fixed value (for example, 0.5 ms, corresponding to the collection period of the rotational speed sensor). In this way, the collection time corresponding to the first initial rotational speed data can be defined as 0, the collection time corresponding to the second initial rotational speed data can be defined as 0.5 ms, the collection time corresponding to the third initial rotational speed data can be defined as 1 ms, and so on.

[0061] Figure 4 It can be a rotational speed-time curve graph obtained from the initial rotational speed data collected during the opening process of the circuit breaker. Among them, the abscissa is the collection time, which can be defined according to the collection sequence and collection period of each initial rotational speed data; the ordinate is the rotational speed signal value, which can correspond to the electrical signal output by the rotational speed sensor and can also indicate the magnitude of the actual rotational speed of the main shaft to a certain extent.

[0062] In addition, when the rotational speed signal value is negative, it can represent that the moving contact is in the state of rotating away from the static contact, and when the rotational speed signal value is positive, it can represent that the moving contact is in the state of rotating towards the static contact.

[0063] In Figure 4 A O1 corresponds to the rotational speed signal value, which is equal to a preset rotational speed signal value E th1 (corresponding to the preset rotational speed data), and A O1 corresponding to the rotational speed signal value can be used as a target rotational speed data.

[0064] B O1 corresponding to the rotational speed signal value can be a local extreme value, and this local extreme value can also be used as a target rotational speed data.

[0065] Of course, the above are only some examples of the determination methods of the target rotational speed data. In actual applications, the target rotational speed data can also be the maximum value or the minimum value among N initial rotational speed data, etc., and can be determined according to actual detection needs.

[0066] In step 303, the performance of the circuit breaker can be detected according to Q target rotational speed data.

[0067] For example, the target rotational speed data can be the maximum or minimum value among P initial rotational speed data. When the absolute value of this maximum or minimum value is less than a certain preset value, it may be due to the attenuation of the spring, resulting in insufficient kinetic energy being provided. Correspondingly, it also indicates that the mechanical performance of the circuit breaker has attenuated.

[0068] For another example, when the time at which a certain local extreme value appears (for example, the time at which the above-mentioned B O1 relative to A O1 appears) is later than the preset time, it can also indicate that the mechanical performance of the circuit breaker has attenuated.

[0069] For another example, the initial rotational speed data between two target rotational speed data can be fitted to obtain a fitting equation, and the fitting equation or its coefficients are compared with the corresponding preset data to determine whether the mechanical performance of the circuit breaker has attenuated.

[0070] Of course, the above are only some examples of the methods for detecting the performance of the circuit breaker based on Q target rotational speed data. In actual applications, these target rotational speed data can be flexibly selected to achieve the detection of the performance of the circuit breaker.

[0071] The circuit breaker performance detection method provided by the embodiments of the present application collects the initial motion data of the target component during the opening or closing process of the circuit breaker. The initial motion data includes P initial rotational speed data. Q target rotational speed data are determined from the P initial rotational speed data. The target rotational speed data is the maximum or minimum value, local extreme value, or the initial rotational speed data equal to the preset rotational speed data among the P initial rotational speed data. The performance of the circuit breaker is detected based on the Q target rotational speed data. The embodiments of the present application can achieve automatic detection of the performance of the circuit breaker by processing the collected initial motion data, avoiding the time-consuming and laborious problems brought by manually detecting the mechanical performance of the circuit breaker regularly; at the same time, it can be detected during the operation of the circuit breaker to timely discover the attenuation of the circuit breaker performance and ensure the reliability of the circuit breaker operation.

[0072] In addition, in combination with Figure 4 the corresponding examples, the rotational speed-time curve graph obtained based on the initial motion data and the corresponding acquisition time can obtain data indicating the moving contact in different motion stages, which helps to further detect the mechanical performance of the moving contact and its related components from multiple angles and improve the performance detection effect of the circuit breaker.

[0073] Optionally, when the initial motion data is collected during the opening process of the circuit breaker, the Q target rotational speed data includes a first rotational speed data and a second rotational speed data. The first rotational speed data is the initial rotational speed data that first equals the first preset rotational speed data during the opening process of the circuit breaker, and the second rotational speed data is the first local extreme value after the first rotational speed data;

[0074] Detect the performance of the circuit breaker according to Q target rotational speed data, including:

[0075] Fit the initial rotational speed data between the first rotational speed data and the second rotational speed data to obtain a first fitting equation, where the first fitting equation takes time as the independent variable and the rotational speed data as the dependent variable;

[0076] Detect the performance of the circuit breaker according to the first fitting equation.

[0077] The following combines Figure 4 the shown rotational speed-time curve diagram to illustrate the implementation process of this embodiment. Figure 4 The discrimination method of the rotational speed signal in the shown rotational speed-time curve diagram is as follows.

[0078] a) When the rotational speed signal value deviates from the 0 point, it is used as the starting point A O1 , corresponding to the start of the movement of the moving mechanism (such as the main shaft, moving contact and related linkage components);

[0079] Explanation: The contact pair of the circuit breaker is unlatched under the push of the shunt trip coil or the iron core of the magnetic flux release, completing the release of the moving contact, and the moving contact starts to move under the combined action of the contact spring and the tension spring.

[0080] b) The point where the rotational speed signal value drops rapidly is B O1 , corresponding to the separation of the contact pair;

[0081] Explanation: After the moving mechanism starts to move, the force of the contact spring on the support is significantly greater than that of the tension spring, and the moving contact and the static contact are still in contact. As the energy of the contact spring is released, the moving contact separates from the static contact. At this time, the moving contact, the support and the contact spring are a whole and are only opened under the action of the tension spring, and the rotational speed of the main shaft drops rapidly instantaneously during this switching process. Therefore, the rotational speed signal drops rapidly.

[0082] c) The zero crossing point where the rotational speed signal value drops rapidly is C O1 , corresponding to the moving contact opening to the maximum position;

[0083] Explanation: The moving contact opens to the maximum position under the action of the tension spring, the opening speed of the moving contact rapidly drops to 0, and rebounds under the action of the collision, and the rotational speed of the main shaft drops to 0 and reverses accordingly.

[0084] The first rotational speed data in this embodiment can be the rotational speed signal value corresponding to A O1 , and the second rotational speed data can be the rotational speed signal value corresponding to B O1 . In addition, the first preset rotational speed data can be E th1 .

[0085] Specifically, a relatively small threshold value E th1 , (|Ei |-E th1 When the value is greater than 0, select E i The corresponding point is A O1 For the point, the first rotational speed data is obtained accordingly. Select the first local maximum point of |E| as B O1 , and the second rotational speed data is obtained accordingly. Among them, B O1 generally corresponds to the just-separated point of the moving contact and the static contact.

[0086] In addition, it is easy to understand that the rotational speed-time curve Figure 1 is generally obtained by connecting the discrete coordinate points composed of P initial rotational speed data and their acquisition times. Correspondingly, each initial rotational speed data can correspond to a serial number i, and this serial number i can indicate the acquisition time sequence of each initial rotational speed data. E i can represent the i-th initial rotational speed data collected.

[0087] On the basis of determining the first rotational speed data and the second rotational speed data, fitting can be performed on the initial rotational speed data between the two to obtain the first fitting equation.

[0088] It is easy to understand that the initial rotational speed data between the above-mentioned first rotational speed data and the second rotational speed data can include the two endpoint data of the first rotational speed data and the second rotational speed data, or can not include these two endpoint data, and can be set according to actual needs.

[0089] The first fitting equation can be a linear equation, a quadratic equation or a higher-order equation, etc., and no specific limitation is made here.

[0090] Combined with an example, several initial rotational speed data can be selected from the initial rotational speed data between the first rotational speed data and the second rotational speed data, and linear regression can be performed in combination with the acquisition time of each initial rotational speed data to obtain the above-mentioned first fitting equation.

[0091] When the first fitting equation is a linear equation, this first equation can be expressed as E = kt + b, where E is the rotational speed signal value, t is the acquisition time, and k and b are coefficients.

[0092] When the first fitting equation is a quadratic equation, this second equation can be expressed as E = at 2 + bt + c, where a, b, and c are coefficients.

[0093] Combined with the above example, it can be seen that in the first fitting equation, the time can be used as the independent variable and the rotational speed signal value as the dependent variable.

[0094] As shown above, the rotational speed data can be a specific rotational speed value or a rotational speed signal value. That is to say, in practical applications, the dependent variable of the above first fitting equation can also be a specific rotational speed value, etc.

[0095] When the first fitting equation is obtained, the first fitting equation can be analyzed.

[0096] For example, the first fitting equation can be compared with a preset equation to obtain the similarity between the two. The preset equation can be a fitting equation determined in a manner similar to the first fitting equation when the circuit breaker is in the initial state or normal working state.

[0097] When the similarity between the first fitting equation and the preset equation is high, it indicates that the attenuation of the mechanical performance of the current circuit breaker is small. On the contrary, when the similarity between the two equations is low, it indicates that the attenuation of the mechanical performance of the current circuit breaker is large.

[0098] It is easy to understand that the attenuation of the mechanical performance of the circuit breaker may be caused by at least the following factors: mechanical wear, electrical wear, attenuation of the contact spring and the tension spring.

[0099] Combined with Figure 4 As can be seen from the rotational speed-time curve shown, the change of the initial rotational speed data between the first rotational speed data and the second rotational speed data is relatively regular. Combining the above description, the second rotational speed data can correspond to the rotational speed data of the moving contact at the instant of separation. Correspondingly, the obtained first fitting equation can better reflect the change gradient of the rotational speed during the process from the start of the main shaft movement to the moving contact reaching the instant of separation. The accuracy of the first fitting equation is relatively high, and based on the first fitting equation, accurate detection of the opening mechanical performance of the circuit breaker can be achieved.

[0100] In one embodiment, the above first fitting equation is an N-th order equation, where N is a positive integer;

[0101] According to the first fitting equation, detecting the performance of the circuit breaker includes:

[0102] Comparing the first preset coefficient with the coefficient of the N-th order term in the N-th order equation to detect the performance of the circuit breaker.

[0103] As shown above, the first fitting equation can be a first-order equation, a second-order equation or a higher-order equation, and these types of equations can be called N-th order equations.

[0104] To simplify the process of monitoring the performance of the circuit breaker according to the first fitting equation and reduce the consumption of computing power, in this embodiment, the coefficient of the N-th order term of the N-th order equation can be used to detect the performance of the circuit breaker.

[0105] For example, if the first fitting equation is a linear equation with the expression E = kt + b, then k can be compared with the first preset coefficient.

[0106] The first preset coefficient can be the initial value of the circuit breaker (i.e., the value when it is not in use and there is no mechanical performance attenuation), or the first preset coefficient can be a critical value. For example, the first preset coefficient can be a positive value and is the critical value for evaluating whether the opening mechanical performance of the circuit breaker is normal. When the absolute value of k is greater than or equal to the first preset coefficient, it can be considered that the opening mechanical performance of the circuit breaker meets the usage requirements; when the absolute value of k is less than the first preset coefficient, it can be considered that the opening mechanical performance of the circuit breaker cannot meet the normal usage requirements.

[0107] In this embodiment, by comparing the coefficients of the N - term polynomial of the N - th order equation with the first preset coefficient to detect the performance of the circuit breaker, on the one hand, it can effectively save computing power, and on the other hand, the coefficients of the N - term polynomial can better reflect the change gradient of the above - mentioned initial rotational speed data, and thus can more reasonably evaluate the performance of the circuit breaker.

[0108] Optionally, when the initial motion data is collected during the opening process of the circuit breaker, the Q target rotational speed data further includes a third rotational speed data, and the third rotational speed data is the initial rotational speed data that is equal to the first preset rotational speed data for the second time during the opening process of the circuit breaker;

[0109] Detecting the performance of the circuit breaker according to the Q target rotational speed data further includes:

[0110] Detecting the performance of the circuit breaker according to the target time difference and the preset time difference, where the target time difference is the difference between the acquisition time corresponding to the third rotational speed data and the acquisition time corresponding to the first rotational speed data.

[0111] See Figure 4 In this embodiment, the third rotational speed data can be C O1 corresponding rotational speed signal value. The third rotational speed data can be considered as the initial rotational speed data that is equal to the preset rotational speed data mentioned above.

[0112] As shown above, the zero - crossing point where the rotational speed signal value rapidly drops is C O1 corresponding to the moving contact opening to the maximum position. Therefore, the movement process of the moving contact from point A O1 to point C O1 can be considered as the movement process from the start of the action to the maximum angular position. By analyzing the time experienced in this movement process, the mechanical performance of the circuit breaker can be detected.

[0113] For example, the time difference Δt O1 from point A O1 to point C O1, that is, the above-mentioned target time difference. Let Δt O1 be compared with a preset time difference Δt0, which can be the critical value of the time difference when the circuit breaker is operating normally. When Δt O1 is greater than Δt0, it indicates that the mechanical performance attenuation of the circuit breaker is relatively significant. Conversely, when Δt O1 is less than or equal to Δt0, it indicates that the current mechanical performance of the circuit breaker may meet the normal usage requirements.

[0114] This embodiment detects the mechanical performance of the circuit breaker based on the time when the moving contact of the circuit breaker starts to move until it reaches the maximum angular position, which helps to detect the performance of the circuit breaker from different angles and improve the reliability of the detection.

[0115] In one example, when it is determined that the attenuation of the mechanical performance of the circuit breaker affects the normal use of the circuit breaker, an alarm can be given or further diagnosis of the circuit breaker can be carried out.

[0116] Optionally, the initial motion data further includes J initial rotation angle data, and each initial rotation angle data is associated with a collection time, where J is an integer greater than 1;

[0117] In the case where the initial motion data is collected during the opening process of the circuit breaker, the J initial rotation angle data includes a first rotation angle data and a second rotation angle data. The first rotation angle data is the initial rotation angle data that first equals the first preset rotation angle during the opening process of the circuit breaker, and the second rotation angle data is the initial rotation angle data corresponding to the maximum angular position;

[0118] After collecting the initial motion data of the target component during the opening process of the circuit breaker, the method further includes:

[0119] Fitting the initial rotation angle data between the first rotation angle data and the second rotation angle data to obtain a third fitting equation. The third fitting equation is an L-degree equation, and the third fitting equation takes time as the independent variable and rotation angle as the dependent variable, where L is a positive integer;

[0120] Compare the third preset coefficient with the coefficient of the L-degree term in the L-degree equation to detect the performance of the circuit breaker.

[0121] In this embodiment, the above-mentioned rotation angle data can be a specific rotation angle value or an electrical signal expression form of the rotation angle, that is, a rotation angle signal value. The rotation angle signal value can characterize the magnitude of the rotation angle.

[0122] The following is combined with Figure 5The implementation process of this embodiment will be described with reference to the shown rotation angle - time curve. In this rotation angle - time curve, the time is taken as the abscissa and the rotation angle signal value is taken as the ordinate. In addition, the angular position when the main shaft starts to move during the opening process is defined as point 0. When the main shaft drives the moving contact to rotate away from the static contact, the rotation angle signal value is negative.

[0123] The discrimination method of the rotation angle signal is as follows:

[0124] a) When the rotation angle signal deviates from point 0, it is taken as the starting point A O2 , corresponding to the start of the movement of the moving contact;

[0125] b) The highest point of the absolute value |E| of the rotation angle signal is taken as point B O2 , corresponding to the moving contact being opened to the maximum position.

[0126] The above - mentioned first rotation angle data can correspond to the rotation angle signal value at point A O2 , and the second rotation angle data can correspond to the rotation angle signal value at point B O2 .

[0127] The specific determination method of the above - mentioned point A O2 and point B O2 can be as follows:

[0128] Set a relatively small threshold value δ th1 (corresponding to the first preset rotation angle). When the value of (|δ i |-δ th1 ) is greater than 0, select the corresponding point of δ i as point A O2 . The lowest point of the rotation angle signal value is point B O2 .

[0129] Similar to the above - mentioned initial rotational speed data, each initial rotation angle data can correspond to a sequence number i, and this sequence number i can indicate the acquisition time sequence of each initial rotation angle data. δ i can represent the i - th initial rotation angle data collected.

[0130] By fitting the initial rotation angle data located between the first rotation angle data and the second rotation angle data, a third fitting equation can be obtained.

[0131] For example, several sampling points between A O2 and B O2 can be intercepted for linear regression to obtain the curve δ = kt + b (corresponding to the third fitting equation), where δ is the rotation angle signal value and t is the time.

[0132] Of course, in practical applications, the third fitting equation can also be a quadratic equation or a higher-order equation, etc., which can be set as needed. For example, when the third fitting equation is a quadratic equation, the third fitting equation can also be expressed as δ = at 2 + bt + c.

[0133] Generally speaking, the third fitting equation can be an L-order equation. In this embodiment, the third preset coefficient can be compared with the coefficient of the L-th order term in the L-order equation to detect the performance of the circuit breaker.

[0134] For example, when the third fitting equation is expressed as δ = kt + b, the absolute value of k can be compared with the third preset coefficient. The third preset coefficient can be a positive value, specifically, it can be the initial value corresponding to the circuit breaker, or a critical value for measuring whether the mechanical performance of the circuit breaker can meet the normal use requirements, etc.

[0135] When the third preset coefficient is the above-mentioned critical value, if the absolute value of k is greater than or equal to the third preset coefficient, it indicates that the current mechanical performance of the circuit breaker can meet the normal use requirements; on the contrary, when the absolute value of k is less than the third preset coefficient, it indicates that the current mechanical performance of the circuit breaker decays significantly and may not meet the normal use requirements.

[0136] In this embodiment, the initial rotation angle data during the opening process of the circuit breaker is processed to obtain the third fitting equation, and the performance of the circuit breaker is detected based on the coefficients in the third fitting equation. The mechanical performance of the circuit breaker during opening can be evaluated from the perspective of the rotation angle change gradient, improving the detection effect. At the same time, by using the method of coefficient comparison, the consumption of computing resources can be effectively reduced.

[0137] Optionally, when the initial motion data is collected during the closing process of the circuit breaker, the Q target rotation speed data includes the fourth rotation speed data and the fifth rotation speed data. The fourth rotation speed data is the initial rotation speed data that first equals the second preset rotation speed data during the closing process of the circuit breaker, and the fifth rotation speed data is the maximum value among the P initial rotation speed data;

[0138] According to the Q target rotation speed data, detecting the performance of the circuit breaker includes:

[0139] Fitting the initial rotation speed data between the fourth rotation speed data and the fifth rotation speed data to obtain a second fitting equation, where the second fitting equation takes time as the independent variable and the rotation speed data as the dependent variable;

[0140] Detecting the performance of the circuit breaker according to the second fitting equation.

[0141] The following is combined with Figure 6The speed-time curve diagram shown in the figure is used to illustrate the implementation process of this embodiment. The speed-time curve diagram uses time as the horizontal axis and the speed signal value as the vertical axis. When the speed signal value is positive, it means that the main shaft drives the moving contact to rotate in the direction close to the static contact.

[0142] Of course, as shown above, the speed data may be a specific speed value in addition to the speed signal value.

[0143] Figure 6 The speed signal in the speed-time curve diagram shown is judged as follows.

[0144] a) When the speed signal deviates from 0, it is taken as the starting time point A C1 , the corresponding spindle starts to move;

[0145] Explanation: The locking mechanism of the moving contact of the circuit breaker is unfastened under the push of the iron core of the closed coil, completing the release of the moving contact, and the mechanism starts to move under the action of the energy storage spring.

[0146] b) The speed signal continues to increase and reaches the peak point B C1 , corresponding to the contact between the moving and static contacts;

[0147] Explanation: The moving contact closes quickly under the action of the energy storage spring, and the moving contact moves quickly toward the static contact. When the moving and static contacts collide, the maximum speed is reached, and the spindle speed reaches the maximum. After the collision, the contact speed drops rapidly, and the spindle speed drops rapidly to 0 and reverses.

[0148] In this embodiment, the fourth speed data may be A C1 The corresponding speed signal value, the fifth speed data can be B C1 The corresponding speed signal value.

[0149] For A C1 With B C1 The specific determination method can be as follows:

[0150] According to the actual situation, set a smaller threshold E th2 ,(|E i |-E th2 ) value is greater than 0, select E i The corresponding point is A C1 Point. C1 After the speed reaches the point, the speed may fluctuate greatly. After the speed increases steadily, select E i The maximum value is B C1 point.

[0151] As shown above, E iIt can represent the i-th initial rotational speed data collected. Combining the above examples, the fourth rotational speed data can be the initial rotational speed data equal to the second preset rotational speed data, and the fifth rotational speed data can be the maximum or minimum value among the P initial rotational speed data.

[0152] On the basis of determining the fourth rotational speed data and the fifth rotational speed data, fitting can be performed on the initial rotational speed data between the two to obtain the second fitting equation.

[0153] The fitting method of the second fitting equation can be similar to that of the first fitting equation in the above text. For example, several equally timed interval points between A C1 ~B C1 can be intercepted for linear or quadratic regression to obtain the curve E = kt + b or E = at 2 + bt + c, where E is the rotational speed signal value and t is the time.

[0154] According to the second fitting equation, the performance of the circuit breaker can be detected. For example, the first fitting equation can be compared with a preset equation to obtain the similarity between the two. The preset equation can be a fitting equation determined based on a method similar to that of the second fitting equation when the circuit breaker is in the initial state or normal working state.

[0155] When the similarity between the second fitting equation and the preset equation is high, it indicates that the attenuation of the mechanical performance of the current circuit breaker is small. On the contrary, when the similarity between the two equations is low, it indicates that the attenuation of the mechanical performance of the current circuit breaker is large.

[0156] In this embodiment, the obtained second fitting equation can better reflect the rotational speed change gradient during the process of the moving contact from unlocking to colliding with the static contact during the closing process of the circuit breaker. Based on the second fitting equation, effective detection of the closing mechanical performance of the circuit breaker can be achieved.

[0157] In one embodiment, the second fitting equation is an M-th order equation, where M is a positive integer;

[0158] Detecting the performance of the circuit breaker according to the second fitting equation includes:

[0159] Comparing the second preset coefficient with the coefficient of the M-th order term in the M-th order equation to detect the performance of the circuit breaker.

[0160] As shown above, the second fitting equation can be a linear equation, a quadratic equation or a high-order equation, and these types of equations can be called M-th order equations.

[0161] Among them, the value of M and the value of N in the above text can be the same or different. For example, the above first fitting equation can be a linear equation, and the second fitting equation can be a quadratic equation; or both the first fitting equation and the second fitting equation are linear equations, etc., and no specific limitation is required here.

[0162] In order to simplify the process of monitoring the performance of the circuit breaker according to the first fitting equation and reduce the consumption of computing power, in this embodiment, the coefficient of the Nth term of the Nth-degree equation can be used to detect the performance of the circuit breaker.

[0163] For example, if the second fitting equation is a linear equation with the expression E = kt + b, then k can be compared with the second preset coefficient.

[0164] The second preset coefficient can be the initial value of the circuit breaker (i.e., the value when it is not used and there is no mechanical performance attenuation), or the second preset coefficient can be a critical value. For example, the second preset coefficient can be a positive value and is the critical value for evaluating whether the closing mechanical performance of the circuit breaker is normal. When the absolute value of k is greater than or equal to the second preset coefficient, it can be considered that the closing mechanical performance of the circuit breaker meets the usage requirements; when the absolute value of k is less than the second preset coefficient, it can be considered that the closing mechanical performance of the circuit breaker cannot meet the normal usage requirements.

[0165] In this embodiment, by comparing the coefficient of the Mth term of the Mth-degree equation with the second preset coefficient to detect the performance of the circuit breaker, on the one hand, it can effectively save computing power, and on the other hand, the coefficient of the Mth term can better reflect the change gradient of the above initial rotational speed data, and thus can more reasonably evaluate the performance of the circuit breaker.

[0166] Optionally, when the initial motion data is collected during the closing process of the circuit breaker, the J initial rotation angle data includes the third rotation angle data and the fourth rotation angle data. The third rotation angle data is the initial rotation angle data that first equals the second preset rotation angle during the opening process of the circuit breaker, and the fourth rotation angle data is the initial rotation angle data corresponding to the maximum rotation angle position. J is an integer greater than 1;

[0167] After collecting the initial motion data of the target component during the closing process of the circuit breaker, the method further includes:

[0168] Fitting the initial rotation angle data between the third rotation angle data and the fourth rotation angle data to obtain a fourth fitting equation. The fourth fitting equation is an Rth-degree equation, and the fourth fitting equation uses time as the independent variable and rotation angle as the dependent variable, where R is a positive integer;

[0169] Comparing the fourth preset coefficient with the coefficient of the Rth term in the Rth-degree equation to detect the performance of the circuit breaker.

[0170] In this embodiment, the corner data may be a specific corner value or a corner signal value.

[0171] The following will Figure 7 describe the implementation process of this embodiment with reference to the shown corner-time curve graph. In this corner-time curve graph, the time is taken as the abscissa and the corner signal value is taken as the ordinate. Additionally, the angular position when the main shaft starts to move during the closing process is defined as point 0, and when the main shaft drives the moving contact to rotate towards the static contact, the corner signal value is positive.

[0172] The discrimination method of the corner signal is as follows:

[0173] a) When the corner signal deviates from point 0, it is taken as the starting point A C2 , corresponding to the start of the main shaft movement;

[0174] b) The highest point of the absolute value |δ| of the corner signal is taken as point B C2 , corresponding to the closing of the contact pair;

[0175] The above-mentioned third corner data may correspond to the corner signal value at point A C2 , and the fourth corner data may correspond to the corner signal value at point B C2 .

[0176] The specific determination method of the above points A C2 and B C2 can be as follows:

[0177] According to the actual situation, a relatively small threshold value δ th2 is set, (|δ i | - δ th2 ) value is greater than 0, the corresponding point of δ i is taken as point A C2 . The lowest point of the corner signal is point B C2 .

[0178] Fitting the initial corner data between the third corner data and the fourth corner data can obtain the fourth fitting equation.

[0179] For example, several sampling points between A C2 and B C2 can be intercepted for linear regression to obtain the curve δ = kt + b0 or δ = at 2 + bt + c, where δ is the corner signal value and t is the time. The curve obtained by linear regression here can correspond to the fourth fitting equation.

[0180] The fourth fitting equation can be an R-degree equation. In this embodiment, the fourth preset coefficient can be compared with the coefficient of the R-degree term in the R-degree equation to detect the performance of the circuit breaker.

[0181] For example, when the third fitting equation is expressed as δ = kt + b, the absolute value of k can be compared with the fourth preset coefficient. The fourth preset coefficient can be a positive value, specifically, it can be the initial value corresponding to the circuit breaker, or the critical value for measuring whether the mechanical performance of the circuit breaker can meet the normal use requirements, etc.

[0182] When the third preset coefficient is the above-mentioned critical value, if the absolute value of k is greater than or equal to the fourth preset coefficient, it indicates that the current mechanical performance of the circuit breaker can meet the normal use requirements; on the contrary, when the absolute value of k is less than the fourth preset coefficient, it indicates that the current mechanical performance attenuation of the circuit breaker is relatively significant and may not be able to meet the normal use requirements.

[0183] In this embodiment, the initial rotation angle data during the closing process of the circuit breaker is processed to obtain the fourth fitting equation, and the performance of the circuit breaker is detected based on the coefficients in the fourth fitting equation. The closing mechanical performance of the circuit breaker can be evaluated from the perspective of the rotation angle change gradient, improving the detection effect. At the same time, by using the method of coefficient comparison, the consumption of computing resources can be effectively reduced.

[0184] As Figure 8 shown, an embodiment of the present application also provides a circuit breaker performance detection device, including:

[0185] An acquisition module 801, configured to acquire the initial motion data of the target component during the opening or closing process of the circuit breaker; wherein, the target component is the moving contact included in the circuit breaker or a component linked to the moving contact, and the initial motion data includes P initial rotational speed data, and P is an integer greater than 1;

[0186] A determination module 802, configured to determine Q target rotational speed data from the P initial rotational speed data, where the target rotational speed data is the maximum value, local extreme value, or the initial rotational speed data equal to the preset rotational speed data among the P initial rotational speed data, and Q is an integer greater than 1 and less than or equal to P;

[0187] A detection module 803, configured to detect the performance of the circuit breaker according to the Q target rotational speed data.

[0188] Optionally, when the initial motion data is acquired during the opening process of the circuit breaker, the Q target rotational speed data includes a first rotational speed data and a second rotational speed data. The first rotational speed data is the initial rotational speed data that first equals the first preset rotational speed data during the opening process of the circuit breaker, and the second rotational speed data is the first local extreme value after the first rotational speed data;

[0189] The detection module 803 includes:

[0190] The first fitting unit is configured to fit the initial rotational speed data between the first rotational speed data and the second rotational speed data to obtain a first fitting equation, where the first fitting equation uses time as the independent variable and rotational speed data as the dependent variable;

[0191] The first detection unit is configured to detect the performance of the circuit breaker according to the first fitting equation.

[0192] Optionally, the first fitting equation is an Nth-order equation, where N is a positive integer;

[0193] The first detection unit is specifically configured to compare the first preset coefficient with the coefficient of the Nth-order term in the Nth-order equation to detect the performance of the circuit breaker.

[0194] Optionally, when the initial motion data is collected during the opening process of the circuit breaker, the Q target rotational speed data further includes a third rotational speed data, where the third rotational speed data is the initial rotational speed data that is equal to the first preset rotational speed data for the second time during the opening process of the circuit breaker;

[0195] Optionally, the detection module 803 further includes:

[0196] The second detection unit is configured to detect the performance of the circuit breaker according to the target time difference and the preset time difference, where the target time difference is the difference between the acquisition time corresponding to the third rotational speed data and the acquisition time corresponding to the first rotational speed data.

[0197] Optionally, when the initial motion data is collected during the closing process of the circuit breaker, the Q target rotational speed data includes a fourth rotational speed data and a fifth rotational speed data, where the fourth rotational speed data is the initial rotational speed data that is equal to the second preset rotational speed data for the first time during the closing process of the circuit breaker, and the fifth rotational speed data is the maximum value among the P initial rotational speed data;

[0198] The detection module 803 includes:

[0199] The second fitting unit is configured to fit the initial rotational speed data between the fourth rotational speed data and the fifth rotational speed data to obtain a second fitting equation, where the second fitting equation uses time as the independent variable and rotational speed data as the dependent variable;

[0200] The third detection unit is configured to detect the performance of the circuit breaker according to the second fitting equation.

[0201] Optionally, the second fitting equation is an Mth-order equation, where M is a positive integer;

[0202] The third detection unit is specifically configured to compare the second preset coefficient with the coefficient of the Mth-order term in the Mth-order equation to detect the performance of the circuit breaker.

[0203] Optionally, the initial motion data further includes J initial rotation angle data, and each initial rotation angle data is associated with an acquisition time, where J is an integer greater than 1;

[0204] When the initial motion data is collected during the opening process of the circuit breaker, the J initial rotation angle data includes first rotation angle data and second rotation angle data. The first rotation angle data is the initial rotation angle data that first equals the first preset rotation angle during the opening process of the circuit breaker, and the second rotation angle data is the initial rotation angle data corresponding to the maximum rotation angle position.

[0205] Correspondingly, the circuit breaker performance detection device may further include:

[0206] A third fitting unit, configured to fit the initial rotation angle data between the first rotation angle data and the second rotation angle data to obtain a third fitting equation. The third fitting equation is an L-degree equation, and the third fitting equation takes time as the independent variable and rotation angle as the dependent variable, where L is a positive integer.

[0207] A first comparison and detection unit, configured to compare the third preset coefficient with the coefficient of the L-degree term in the L-degree equation to detect the performance of the circuit breaker.

[0208] Optionally, when the initial motion data is collected during the closing process of the circuit breaker, the J initial rotation angle data includes third rotation angle data and fourth rotation angle data. The third rotation angle data is the initial rotation angle data that first equals the second preset rotation angle during the opening process of the circuit breaker, and the fourth rotation angle data is the initial rotation angle data corresponding to the maximum rotation angle position. J is an integer greater than 1.

[0209] Correspondingly, the circuit breaker performance detection device may further include:

[0210] A fourth fitting unit, configured to fit the initial rotation angle data between the third rotation angle data and the fourth rotation angle data to obtain a fourth fitting equation. The fourth fitting equation is an R-degree equation, and the fourth fitting equation takes time as the independent variable and rotation angle as the dependent variable, where R is a positive integer.

[0211] A second comparison and detection unit, configured to compare the fourth preset coefficient with the coefficient of the R-degree term in the R-degree equation to detect the performance of the circuit breaker.

[0212] It should be noted that the circuit breaker performance detection device is a device corresponding to the above-mentioned circuit breaker performance detection method. All implementation manners in the above method embodiments are applicable to the embodiments of this device and can achieve the same technical effects.

[0213] Figure 9 The hardware structure diagram of the electronic device provided by the embodiment of the present application is shown.

[0214] The electronic device may include a processor 901 and a memory 902 storing computer program instructions.

[0215] Specifically, the above-mentioned processor 901 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured as one or more integrated circuits for implementing the embodiments of the present application.

[0216] The memory 902 may include a mass storage for data or instructions. By way of example and not limitation, the memory 902 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disc, a magneto-optical disc, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. In a suitable case, the memory 902 may include removable or non-removable (or fixed) media. In a suitable case, the memory 902 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, the memory 902 is a non-volatile solid-state memory.

[0217] The memory may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk storage media device, an optical storage media device, a flash memory device, an electrical, optical, or other physical / tangible memory storage device. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the methods according to the present disclosure.

[0218] The processor 901 reads and executes the computer program instructions stored in the memory 902 to implement any one of the circuit breaker performance detection methods in the above embodiments.

[0219] In one example, the electronic device may further include a communication interface 903 and a bus 904. Among them, as Figure 9 shown, the processor 901, the memory 902, and the communication interface 903 are connected through the bus 904 to complete the communication with each other.

[0220] The communication interface 903 is mainly used to implement the communication between each module, device, unit, and / or device in the embodiments of the present application.

[0221] The bus 904 includes hardware, software, or both, and couples the components of the online data flow metering device to each other. By way of example and not limitation, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a MicroChannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses or a combination of two or more of these. Where appropriate, the bus 904 may include one or more buses. Although the embodiments of the present application describe and illustrate specific buses, the present application contemplates any suitable bus or interconnect.

[0222] In addition, in combination with the circuit breaker performance detection method in the above embodiments, the embodiments of the present application can be implemented by providing a computer storage medium. Computer program instructions are stored on the computer storage medium; when the computer program instructions are executed by a processor, any one of the circuit breaker performance detection methods in the above embodiments is implemented.

[0223] It should be clear that the present application is not limited to the specific configurations and processes described above and illustrated in the figures. For the sake of brevity, the detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and illustrated as examples. However, the method process of the present application is not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions, or change the order between steps after understanding the spirit of the present application.

[0224] The functional blocks shown in the above block diagrams can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), appropriate firmware, a plug-in, a function card, and so on. When implemented in software, the elements of the present application are programs or code segments used to perform the required tasks. The program or code segment can be stored in a machine-readable medium or transmitted via a data signal carried in a carrier wave on a transmission medium or a communication link. "Machine-readable medium" can include any medium that can store or transmit information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical discs, hard disks, fiber optic media, Radio Frequency (RF) links, and so on. The code segment can be downloaded via a computer network such as the Internet, an intranet, and so on.

[0225] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps. That is to say, the steps can be executed in the order mentioned in the embodiments, or different from the order in the embodiments, or several steps can be executed simultaneously.

[0226] As described above with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems) and computer program products according to embodiments of the present disclosure. It should be understood that each block in the flowchart and / or block diagram, and the combination of blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the functions / operations specified in one or more blocks of the flowchart and / or block diagram. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field programmable logic circuit. It should also be understood that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can also be implemented by dedicated hardware that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0227] The above is only the specific implementation manner of this application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, modules, and units can refer to the corresponding processes in the foregoing method embodiments and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A method for detecting the performance of a circuit breaker, characterized in that, Including: Collecting initial motion data of a target component during the opening or closing process of a circuit breaker; wherein, the target component is a moving contact included in the circuit breaker or a component linked with the moving contact, and the initial motion data includes P initial rotational speed data, where P is an integer greater than 1; Determining Q target rotational speed data from the P initial rotational speed data, where the target rotational speed data is the maximum value, local extreme value, or initial rotational speed data equal to a preset rotational speed data among the P initial rotational speed data, and Q is an integer greater than 1 and less than or equal to P; Detecting the performance of the circuit breaker according to the Q target rotational speed data; When the initial motion data is collected during the opening process of the circuit breaker, the Q target rotational speed data includes a first rotational speed data and a second rotational speed data. The first rotational speed data is the initial rotational speed data that first equals a first preset rotational speed data during the opening process of the circuit breaker, and the second rotational speed data is the first local extreme value after the first rotational speed data; The detecting the performance of the circuit breaker according to the Q target rotational speed data includes: Fitting the initial rotational speed data between the first rotational speed data and the second rotational speed data to obtain a first fitting equation, where the first fitting equation takes time as the independent variable and rotational speed data as the dependent variable; Detecting the performance of the circuit breaker according to the first fitting equation; 2. The method according to claim 1, characterized in that The first fitting equation is an N-th order equation, where N is a positive integer; The detecting the performance of the circuit breaker according to the first fitting equation includes: Comparing a first preset coefficient with the coefficient of the N-th order term in the N-th order equation to detect the performance of the circuit breaker; 3. The method according to claim 1, wherein When the initial motion data is collected during the opening process of the circuit breaker, the Q target rotational speed data further includes a third rotational speed data, where the third rotational speed data is the initial rotational speed data that second equals the first preset rotational speed data during the opening process of the circuit breaker; The detecting the performance of the circuit breaker according to the Q target rotational speed data further includes: Detecting the performance of the circuit breaker according to a target time difference and a preset time difference, where the target time difference is the difference between the acquisition time corresponding to the third rotational speed data and the acquisition time corresponding to the first rotational speed data; 4. The method according to claim 1, characterized in that, When the initial motion data is collected during the closing process of the circuit breaker, the Q target rotational speed data includes a fourth rotational speed data and a fifth rotational speed data. The fourth rotational speed data is the initial rotational speed data that first equals a second preset rotational speed data during the closing process of the circuit breaker, and the fifth rotational speed data is the maximum value among the P initial rotational speed data; The detecting the performance of the circuit breaker according to the Q target rotational speed data includes: Fitting the initial rotational speed data between the fourth rotational speed data and the fifth rotational speed data to obtain a second fitting equation, where the second fitting equation takes time as the independent variable and rotational speed data as the dependent variable; Detecting the performance of the circuit breaker according to the second fitting equation; 5. The method according to claim 4, wherein The second fitting equation is an M-th order equation, where M is a positive integer; The detecting the performance of the circuit breaker according to the second fitting equation includes: Comparing a second preset coefficient with the coefficient of the M-th order term in the M-th order equation to detect the performance of the circuit breaker.

6. The method according to claim 1, characterized in that, The initial motion data further includes J initial rotation angle data, and each of the initial rotation angle data is associated with a collection time, where J is an integer greater than 1; When the initial motion data is collected during the opening process of the circuit breaker, the J initial rotation angle data includes a first rotation angle data and a second rotation angle data. The first rotation angle data is the initial rotation angle data that first equals a first preset rotation angle during the opening process of the circuit breaker, and the second rotation angle data is the initial rotation angle data corresponding to the maximum rotation angle position; After collecting the initial motion data of the target component during the opening process of the circuit breaker, the method further includes: Fitting the initial rotation angle data between the first rotation angle data and the second rotation angle data to obtain a third fitting equation. The third fitting equation is an L-degree equation, and the third fitting equation uses time as the independent variable and rotation angle as the dependent variable, where L is a positive integer; Comparing a third preset coefficient with the coefficient of the L-degree term in the L-degree equation to detect the performance of the circuit breaker.

7. The method according to claim 6, characterized in that, When the initial motion data is collected during the closing process of the circuit breaker, the J initial rotation angle data includes a third rotation angle data and a fourth rotation angle data. The third rotation angle data is the initial rotation angle data that first equals a second preset rotation angle during the closing process of the circuit breaker, and the fourth rotation angle data is the initial rotation angle data corresponding to the maximum rotation angle position, where J is an integer greater than 1; After collecting the initial motion data of the target component during the closing process of the circuit breaker, the method further includes: Fitting the initial rotation angle data between the third rotation angle data and the fourth rotation angle data to obtain a fourth fitting equation. The fourth fitting equation is an R-degree equation, and the fourth fitting equation uses time as the independent variable and rotation angle as the dependent variable, where R is a positive integer; Comparing a fourth preset coefficient with the coefficient of the R-degree term in the R-degree equation to detect the performance of the circuit breaker.

8. A circuit breaker performance detection device, characterized in that, Including: A collection module for collecting the initial motion data of the target component during the opening or closing process of the circuit breaker; wherein, the target component is a moving contact included in the circuit breaker or a component linked to the moving contact, and the initial motion data includes P initial rotational speed data, where P is an integer greater than 1; A determination module for determining Q target rotational speed data from the P initial rotational speed data. The target rotational speed data is the maximum value, local extreme value, or initial rotational speed data equal to the preset rotational speed data among the P initial rotational speed data, and Q is an integer greater than 1 and less than or equal to P; A detection module for detecting the performance of the circuit breaker according to the Q target rotational speed data; When the initial motion data is collected during the opening process of the circuit breaker, the Q target rotational speed data includes a first rotational speed data and a second rotational speed data. The first rotational speed data is the initial rotational speed data that first equals the first preset rotational speed data during the opening process of the circuit breaker, and the second rotational speed data is the first local extreme value after the first rotational speed data; The detection module includes: The first fitting unit is configured to fit the initial rotational speed data located between the first rotational speed data and the second rotational speed data to obtain a first fitting equation, where the first fitting equation uses time as the independent variable and rotational speed data as the dependent variable; The first detection unit is configured to detect the performance of the circuit breaker according to the first fitting equation.

9. An electronic device, characterized in that, The device includes a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, the method for detecting the performance of the circuit breaker according to any one of claims 1-7 is implemented.

10. A computer storage medium, characterized in that, Computer program instructions are stored on the computer storage medium, and when the computer program instructions are executed by the processor, the method for detecting the performance of the circuit breaker according to any one of claims 1-7 is implemented.

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