CN115062984B - Method, equipment and device for evaluating performance of opening and closing coil of circuit breaker - Google Patents
Method, equipment and device for evaluating performance of opening and closing coil of circuit breaker Download PDFInfo
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Abstract
The application relates to a method, equipment and a device for evaluating the performance of a switching-on/off coil of a circuit breaker, wherein the method comprises the following steps: and obtaining vibration signal actual measurement values and impact force actual measurement values generated by a plurality of groups of breaker opening and closing coils to be evaluated in the opening and closing action process, so as to ensure the accuracy of a final evaluation result. Because the impact force actual measurement value is less influenced by external factors, the method obtains each vibration signal predicted value based on the correlation function of the vibration signal and the impact force and each impact force actual measurement value, and finally determines the performance evaluation result of the breaker opening and closing coil to be evaluated according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value. Compared with the evaluation model in the prior art, the correlation function of the vibration signal and the impact force constructed in the application does not need a model training process, and can be widely applied to performance evaluation of various different circuit breakers, and has higher practicability.
Description
Technical Field
The application relates to the technical field of circuit breaker component evaluation, in particular to a circuit breaker opening and closing coil performance evaluation method, equipment and a device.
Background
In order to cope with increasing power demands, it is important to ensure the reliability of the power quality, and the high-voltage circuit breaker is an important device in a power system, can timely isolate fault current according to the demands, and is particularly important for safe and stable operation of the power system. In the operation of the power system, once the occurrence of faults is detected, loads at the fault points can be cut off through the high-voltage circuit breaker, and further expansion of the faults is never avoided. If a high-voltage circuit breaker installed in a system fails, failure removal failure is caused, with serious consequences, so that stable operation of the high-voltage circuit breaker is important for an electric power system.
The high-voltage circuit breaker has a complex structure, a fault point can be cut off in a short time through opening and closing, and one of internal key elements for determining the opening and closing is an iron core coil.
In the prior art, the performance evaluation result of the breaker iron core coil is generally output by inputting a vibration signal into a pre-trained evaluation model, but the existing evaluation model has the problems of poor robustness and complex training process, and the evaluation model is low in practicability of evaluating the performance of the breaker iron core coil.
Disclosure of Invention
The application provides a method, equipment and device for evaluating the performance of a breaker opening and closing coil, which aims to solve the problem that the performance of a breaker iron core coil is low in practicability through an evaluation model in the related art at least to a certain extent.
The scheme of the application is as follows:
according to a first aspect of an embodiment of the present application, there is provided a method for evaluating performance of a switching coil of a circuit breaker, including:
acquiring vibration signal actual measurement values and impact force actual measurement values generated by a plurality of groups of breaker opening and closing coils to be evaluated in the opening and closing action process;
obtaining predicted values of all vibration signals based on a correlation function of the vibration signals and the impact force which are constructed in advance and all the actual measurement values of the impact force;
and determining a performance evaluation result of the switching-on/off coil of the circuit breaker to be evaluated according to a comparison result of the vibration signal actual measurement value and the vibration signal predicted value.
Preferably, the method further comprises:
Obtaining vibration signal sample values and impact force sample values generated by a plurality of groups of sample breaker opening and closing coils in the opening and closing action process;
and constructing a correlation function of the vibration signal and the impact force according to the plurality of groups of vibration signal sample values and impact force sample values.
Preferably, after the vibration signal sample value and the impact force sample value generated by the opening and closing coils of the multi-group sample circuit breaker in the opening and closing action process are obtained, the method further comprises:
and data cleaning is carried out on each group of vibration signal sample values and impact force sample values.
Preferably, the constructing a correlation function of the vibration signal and the impact force according to the multiple groups of vibration signal sample values and impact force sample values includes:
And fitting a plurality of groups of vibration signal sample values and impact force sample values to obtain a correlation function of the vibration signal and the impact force.
Preferably, after obtaining the measured vibration signal values and the measured impact force values generated by the multiple groups of to-be-evaluated breaker opening and closing coils in the opening and closing action process, the method further includes:
And decomposing, reconstructing, filtering and reducing noise of the vibration signal actual measurement value.
Preferably, the determining the performance evaluation result of the to-be-evaluated breaker opening and closing coil according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value includes:
respectively calculating an actual measurement average value of the actual measurement value of the vibration signal and a prediction average value of the predicted value of the vibration signal;
and determining a performance evaluation result of the switching-on/off coil of the circuit breaker to be evaluated according to a comparison result of the actual measurement average value and the prediction average value.
Preferably, the determining the performance evaluation result of the to-be-evaluated breaker opening and closing coil according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value includes:
Determining comparison results of measured values and predicted values of the vibration signals of each group;
counting the duty ratio of each comparison result in all comparison results, and taking the comparison result with the highest duty ratio as a final comparison result;
and determining a performance evaluation result of the breaking and closing coil of the circuit breaker to be evaluated according to the final comparison result.
Preferably, the determining the performance evaluation result of the to-be-evaluated breaker opening and closing coil according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value includes:
Outputting a first-level performance evaluation result when the comparison result is that the vibration signal actual measurement value is not larger than the vibration signal predicted value;
Outputting a secondary performance evaluation result when the comparison result is that the vibration signal actual measurement value is larger than the vibration signal predicted value and the difference value between the vibration signal actual measurement value and the vibration signal predicted value does not exceed a preset threshold value;
And outputting a three-level performance evaluation result when the comparison result is that the vibration signal actual measurement value is larger than the vibration signal predicted value and the difference value between the vibration signal actual measurement value and the vibration signal predicted value exceeds a preset threshold value.
According to a second aspect of the embodiment of the present application, there is provided a circuit breaker opening/closing coil performance evaluation apparatus, including:
the acquisition module is used for acquiring vibration signal actual measurement values and impact force actual measurement values generated by a plurality of groups of breaker opening and closing coils to be evaluated in the opening and closing action process;
The prediction module is used for obtaining predicted values of all vibration signals based on a correlation function of the vibration signals and the impact force which are constructed in advance and all the actual measurement values of the impact force;
and the evaluation module is used for determining the performance evaluation result of the switching-on/off coil of the circuit breaker to be evaluated according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value.
According to a third aspect of the embodiment of the present application, there is provided a circuit breaker opening/closing coil performance evaluation apparatus, including:
The vibration sensor comprises a vibration signal sensor, a pressure sensor, a processor and a memory;
The vibration signal sensor and the pressure sensor are arranged on a switching-on/off coil of the circuit breaker to be evaluated;
The processor is respectively in communication connection with the vibration signal sensor, the pressure sensor and the memory;
the vibration signal sensor is used for collecting a vibration signal actual measurement value generated by the circuit breaker opening and closing coil to be evaluated in the opening and closing action process, and sending the vibration signal actual measurement value to the processor;
the pressure sensor is used for collecting an impact force actual measurement value generated by the breaking and closing coil of the circuit breaker to be evaluated in the breaking and closing action process and sending the impact force actual measurement value to the processor;
the processor is used for calling and executing the program stored in the memory;
The memory is used for storing a program, and the program is at least used for executing a breaker opening and closing coil performance evaluation method according to any one of the above.
The technical scheme provided by the application can comprise the following beneficial effects: the breaker opening and closing coil not only can generate a vibration signal in the opening and closing action process, but also can generate impact force on an iron core in the opening and closing coil, so that the association relationship exists between the vibration signal and the impact force. During implementation, vibration signal actual measurement values and impact force actual measurement values generated by a plurality of groups of breaker opening and closing coils to be evaluated in the opening and closing action process are obtained, so that accuracy of a final evaluation result is ensured. Because the impact force actual measurement value is less influenced by external factors, the method obtains each vibration signal predicted value based on the correlation function of the vibration signal and the impact force and each impact force actual measurement value, and finally determines the performance evaluation result of the breaker opening and closing coil to be evaluated according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value. Compared with the evaluation model in the prior art, the correlation function of the vibration signal and the impact force constructed in the application does not need a model training process, and can be widely applied to performance evaluation of various different circuit breakers, and has higher practicability.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic flow chart of a method for evaluating the performance of a switching coil of a circuit breaker according to an embodiment of the present application;
Fig. 2 is a schematic structural diagram of a performance evaluation device for a switching coil of a circuit breaker according to an embodiment of the present application;
Fig. 3 is a schematic structural diagram of a performance evaluation device for a switching coil of a circuit breaker according to an embodiment of the present application.
Reference numerals: an acquisition module-21; a prediction module-22; an evaluation module-23; a vibration signal sensor-31; a pressure sensor-32; a processor-33; and a memory-34.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.
Example 1
Fig. 1 is a flow chart of a method for evaluating the performance of a switching-on/off coil of a circuit breaker according to an embodiment of the present application, referring to fig. 1, the method for evaluating the performance of the switching-on/off coil of the circuit breaker includes:
S11: acquiring vibration signal actual measurement values and impact force actual measurement values generated by a plurality of groups of breaker opening and closing coils to be evaluated in the opening and closing action process;
s12: obtaining predicted values of all vibration signals based on a correlation function of the vibration signals and the impact force which are constructed in advance and the actual measurement values of all the impact forces;
S13: and determining a performance evaluation result of the switching-on/off coil of the circuit breaker to be evaluated according to a comparison result of the vibration signal actual measurement value and the vibration signal predicted value.
It should be noted that, the technical solution in this embodiment may be applied to the field of fault detection of a power system, and in particular may be applied to performance evaluation of a switching coil of a high-voltage circuit breaker.
The process of constructing the correlation function between the vibration signal and the impact force includes:
Obtaining vibration signal sample values and impact force sample values generated by a plurality of groups of sample breaker opening and closing coils in the opening and closing action process;
and constructing a correlation function of the vibration signal and the impact force according to the plurality of groups of vibration signal sample values and impact force sample values.
It should be noted that, the sample breaker opening and closing coil in this embodiment is a breaker opening and closing coil with good performance, and in this embodiment, vibration signal sample values and impact force sample values generated in the opening and closing action process of a plurality of groups of sample breaker opening and closing coils are obtained under an interference-free environment, so as to ensure that no interference frequency band exists in the vibration signal sample values.
It can be understood that in this embodiment, the sample values of the vibration signals and the sample values of the impact force generated by the opening and closing coils of the multi-group sample breaker during the opening and closing actions are obtained, so as to ensure that the number of samples is sufficient.
Further, after obtaining the vibration signal sample value and the impact force sample value generated by the opening and closing coils of the multi-group sample circuit breaker in the opening and closing action process, the method further comprises the following steps:
and data cleaning is carried out on each group of vibration signal sample values and impact force sample values.
It can be understood that in this embodiment, by performing data cleaning on each set of vibration signal sample values and impact force sample values, consistency of data is checked, invalid values are processed, and missing values are filled in, so as to ensure integrity and reliability of sample data.
It should be noted that, in this embodiment, the correlation function between the vibration signal and the impact force is obtained by fitting multiple sets of vibration signal sample values and impact force sample values.
After obtaining the vibration signal actual measurement value and the impact force actual measurement value generated by the multiple groups of breaker opening and closing coils to be evaluated in the opening and closing action process, the method further comprises the following steps:
and decomposing, reconstructing, filtering and reducing noise of the vibration signal actual measurement value.
It can be understood that in this embodiment, the actual measurement value of the vibration signal is decomposed, reconstructed, filtered and noise reduced to eliminate the interference factor in the actual measurement value of the vibration signal. Preferably, in this embodiment, the vibration signal actual measurement value may be decomposed and reconstructed by a VMD (Variational Mode Decomposition, variation modal decomposition) method, which is a signal decomposition and reconstruction method commonly used in the prior art, and will not be described herein. Preferably, in this embodiment, the actual measurement value of the vibration signal may be filtered and denoised by a wavelet denoising method, and the signal filtering denoising method commonly used in the wavelet denoising method in the prior art is not described herein.
It should be noted that, in this embodiment, according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value, the performance evaluation result of the switch-on/off coil of the circuit breaker to be evaluated may be determined according to various schemes, which is specifically as follows:
1) Respectively calculating an actual measurement average value of the actual measurement value of the vibration signal and a prediction average value of the predicted value of the vibration signal;
And determining a performance evaluation result of the switching-on/off coil of the circuit breaker to be evaluated according to a comparison result of the actual measurement average value and the prediction average value.
Illustrating: in this embodiment, three sets of vibration signal actual measurement values and impact force actual measurement values are obtained, and the predicted values of the vibration signals obtained according to the impact force actual measurement values are respectively 60Hz,61Hz and 59Hz, and then the predicted average value of the predicted values of the vibration signals obtained by calculation is 60Hz. And the measured values of the three vibration signals are 62Hz,63Hz and 64Hz respectively, and the measured average value of the measured values of the vibration signals is 63Hz.
And at the moment, the predicted average value is smaller than the actually measured average value, and according to the comparison result, the performance evaluation result of the opening and closing coil of the circuit breaker to be evaluated is determined.
2) Determining comparison results of measured values and predicted values of the vibration signals of each group;
counting the duty ratio of each comparison result in all comparison results, and taking the comparison result with the highest duty ratio as a final comparison result;
And determining a performance evaluation result of the switching-on/off coil of the circuit breaker to be evaluated according to the final comparison result.
Illustrating: in this embodiment, three sets of vibration signal actual measurement values and impact force actual measurement values are obtained, and the vibration signal predicted values obtained according to the impact force actual measurement values are respectively 60hz,61hz and 59hz, and the three corresponding vibration signal actual measurement values are respectively 62hz,59hz and 64hz.
The comparison result is that the two groups of predicted values of the vibration signals are smaller than the actual measurement values of the vibration signals, and one group of predicted values of the vibration signals are larger than the actual measurement values of the vibration signals. And the comparison result that the predicted value of the vibration signal is smaller than the actual measurement value of the vibration signal has the highest duty ratio, so that the predicted value of the vibration signal is smaller than the actual measurement value of the vibration signal to be used as a final comparison result, and the performance evaluation result of the opening and closing coil of the circuit breaker to be evaluated is determined according to the comparison result.
It should be noted that, according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value, determining the performance evaluation result of the switch-on/off coil of the circuit breaker to be evaluated includes:
outputting a first-level performance evaluation result when the comparison result is that the measured value of the vibration signal is not greater than the predicted value of the vibration signal;
Outputting a secondary performance evaluation result when the comparison result is that the vibration signal actual measurement value is larger than the vibration signal predicted value and the difference value between the vibration signal actual measurement value and the vibration signal predicted value does not exceed the preset threshold value;
and when the comparison result is that the vibration signal actual measurement value is larger than the vibration signal predicted value and the difference value between the vibration signal actual measurement value and the vibration signal predicted value exceeds the preset threshold value, outputting a three-level performance evaluation result.
It should be noted that the first performance evaluation result, the second performance evaluation result, and the third performance evaluation result may be regarded as the best, good, and poor, respectively. Other evaluation criteria may be selected in specific practice. The primary performance evaluation result, the secondary performance evaluation result, and the tertiary performance evaluation result in this embodiment are only used as the performance evaluation result categories.
In specific practice, the preset threshold may be 3-5Hz.
It can be understood that the breaker opening and closing coil not only can generate a vibration signal in the opening and closing action process, but also can generate impact force on the iron core in the opening and closing coil, so that the association relationship exists between the vibration signal and the impact force, and in the embodiment, the correlation function of the vibration signal and the impact force is pre-constructed according to the association relationship between the vibration signal and the impact force. During implementation, vibration signal actual measurement values and impact force actual measurement values generated by a plurality of groups of breaker opening and closing coils to be evaluated in the opening and closing action process are obtained, so that accuracy of a final evaluation result is ensured. Because the impact force actual measurement value is less influenced by external factors, according to the embodiment, based on the correlation function of the vibration signal and the impact force and each impact force actual measurement value, each vibration signal predicted value is obtained, and finally, according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value, the performance evaluation result of the breaker opening and closing coil to be evaluated is determined. Compared with the evaluation model in the prior art, the correlation function of the vibration signal and the impact force constructed in the embodiment does not need a model training process, and can be widely applied to performance evaluation of various different circuit breakers, so that the practicability is higher.
Example two
Fig. 2 is a schematic structural diagram of a performance evaluation device for a switching-on/off coil of a circuit breaker according to an embodiment of the present application, referring to fig. 2, the performance evaluation device for a switching-on/off coil of a circuit breaker includes:
The acquisition module 21 is used for acquiring vibration signal actual measurement values and impact force actual measurement values generated in the switching-on and switching-off action process of a plurality of groups of to-be-evaluated breaker switching-on and switching-off coils;
A prediction module 22, configured to obtain predicted values of each vibration signal based on a correlation function of the vibration signal and the impact force, which is constructed in advance, and actual measurement values of each impact force;
and the evaluation module 23 is used for determining the performance evaluation result of the switching-on/off coil of the circuit breaker to be evaluated according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value.
The breaker divide-shut brake coil performance evaluation equipment still includes:
The correlation function construction module is used for acquiring vibration signal sample values and impact force sample values generated by the opening and closing coils of the multi-group sample circuit breaker in the opening and closing action process; constructing a correlation function of the vibration signal and the impact force according to a plurality of groups of vibration signal sample values and impact force sample values;
the data processing module is used for decomposing, reconstructing, filtering and reducing noise of the vibration signal actual measurement value.
It can be understood that the circuit breaker opening and closing coil performance evaluation device in this embodiment constructs the correlation function of the vibration signal and the impact force in advance according to the correlation of the vibration signal and the impact force through the correlation function construction module. In implementation, the acquisition module 21 acquires the vibration signal actual measurement value and the impact force actual measurement value generated by the multiple groups of breaker opening and closing coils to be evaluated in the opening and closing action process, so as to ensure the accuracy of the final evaluation result. Since the impact force actual measurement value is less affected by external factors, in this embodiment, the prediction module 22 obtains each vibration signal predicted value based on the correlation function of the vibration signal and the impact force and each impact force actual measurement value, and finally, the evaluation module 23 determines the performance evaluation result of the opening and closing coil of the circuit breaker to be evaluated according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value. Compared with the evaluation model in the prior art, the correlation function of the vibration signal and the impact force constructed in the embodiment does not need a model training process, and can be widely applied to performance evaluation of various different circuit breakers, so that the practicability is higher.
Example III
Fig. 3 is a schematic structural diagram of a performance evaluation device for a switching-on/off coil of a circuit breaker according to an embodiment of the present application, referring to fig. 3, a performance evaluation device for a switching-on/off coil of a circuit breaker includes:
A vibration signal sensor 31, a pressure sensor 32, a processor 33, and a memory 34;
the vibration signal sensor 31 and the pressure sensor 32 are arranged on the opening and closing coil of the circuit breaker to be evaluated;
The processor 33 is respectively in communication with the vibration signal sensor 31, the pressure sensor 32 and the memory 34;
The vibration signal sensor 31 is used for collecting a vibration signal actual measurement value generated by the opening and closing coil of the circuit breaker to be evaluated in the opening and closing action process, and sending the vibration signal actual measurement value to the processor 33;
The pressure sensor 32 is used for collecting an impact force actual measurement value generated by the breaking and closing coil of the circuit breaker to be evaluated in the breaking and closing action process, and sending the impact force actual measurement value to the processor 33;
a processor 33 for calling and executing the program stored in the memory 34;
The memory 34 is configured to store a program at least for executing the circuit breaker opening/closing coil performance evaluation method as in the above embodiment.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "plurality" means at least two.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It is to be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (6)
1. The method for evaluating the performance of the opening and closing coil of the circuit breaker is characterized by comprising the following steps of:
acquiring vibration signal actual measurement values and impact force actual measurement values generated by a plurality of groups of breaker opening and closing coils to be evaluated in the opening and closing action process;
obtaining predicted values of all vibration signals based on a correlation function of the vibration signals and the impact force which are constructed in advance and all the actual measurement values of the impact force;
Determining a performance evaluation result of the switching-on/off coil of the circuit breaker to be evaluated according to a comparison result of the vibration signal actual measurement value and the vibration signal predicted value;
The method further comprises the steps of:
Obtaining vibration signal sample values and impact force sample values generated by a plurality of groups of sample breaker opening and closing coils in the opening and closing action process;
Constructing a correlation function of the vibration signal and the impact force according to a plurality of groups of vibration signal sample values and impact force sample values;
The construction of the correlation function of the vibration signal and the impact force according to the plurality of groups of vibration signal sample values and impact force sample values comprises the following steps:
fitting a plurality of groups of vibration signal sample values and impact force sample values to obtain a correlation function of the vibration signal and the impact force;
The determining the performance evaluation result of the breaker opening and closing coil to be evaluated according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value comprises the following steps:
Determining comparison results of measured values and predicted values of the vibration signals of each group;
counting the duty ratio of each comparison result in all comparison results, and taking the comparison result with the highest duty ratio as a final comparison result;
determining a performance evaluation result of the breaker opening and closing coil to be evaluated according to the final comparison result;
The determining the performance evaluation result of the breaker opening and closing coil to be evaluated according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value comprises the following steps:
Outputting a first-level performance evaluation result when the comparison result is that the vibration signal actual measurement value is not larger than the vibration signal predicted value;
Outputting a secondary performance evaluation result when the comparison result is that the vibration signal actual measurement value is larger than the vibration signal predicted value and the difference value between the vibration signal actual measurement value and the vibration signal predicted value does not exceed a preset threshold value;
And outputting a three-level performance evaluation result when the comparison result is that the vibration signal actual measurement value is larger than the vibration signal predicted value and the difference value between the vibration signal actual measurement value and the vibration signal predicted value exceeds a preset threshold value.
2. The method of claim 1, wherein after obtaining the vibration signal sample value and the impact force sample value generated by the plurality of groups of sample breaker opening and closing coils during the opening and closing action, the method further comprises:
and data cleaning is carried out on each group of vibration signal sample values and impact force sample values.
3. The method according to any one of claims 1-2, wherein after obtaining the vibration signal actual measurement value and the impact force actual measurement value generated by the multiple groups of the breaking and closing coils of the circuit breaker to be evaluated during the breaking and closing action, the method further comprises:
And decomposing, reconstructing, filtering and reducing noise of the vibration signal actual measurement value.
4. The method according to any one of claims 1-2, wherein determining the performance evaluation result of the opening and closing coil of the circuit breaker to be evaluated according to the comparison result of the measured vibration signal value and the predicted vibration signal value comprises:
respectively calculating an actual measurement average value of the actual measurement value of the vibration signal and a prediction average value of the predicted value of the vibration signal;
and determining a performance evaluation result of the switching-on/off coil of the circuit breaker to be evaluated according to a comparison result of the actual measurement average value and the prediction average value.
5. A circuit breaker opening and closing coil performance evaluation apparatus, comprising:
the acquisition module is used for acquiring vibration signal actual measurement values and impact force actual measurement values generated by a plurality of groups of breaker opening and closing coils to be evaluated in the opening and closing action process;
The prediction module is used for obtaining predicted values of all vibration signals based on a correlation function of the vibration signals and the impact force which are constructed in advance and all the actual measurement values of the impact force;
The evaluation module is used for determining a performance evaluation result of the switching-on/off coil of the circuit breaker to be evaluated according to a comparison result of the vibration signal actual measurement value and the vibration signal predicted value;
The correlation function construction module is used for acquiring vibration signal sample values and impact force sample values generated by the opening and closing coils of the multi-group sample circuit breaker in the opening and closing action process; constructing a correlation function of the vibration signal and the impact force according to a plurality of groups of vibration signal sample values and impact force sample values;
The construction of the correlation function of the vibration signal and the impact force according to the plurality of groups of vibration signal sample values and impact force sample values comprises the following steps:
fitting a plurality of groups of vibration signal sample values and impact force sample values to obtain a correlation function of the vibration signal and the impact force;
The determining the performance evaluation result of the breaker opening and closing coil to be evaluated according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value comprises the following steps:
Determining comparison results of measured values and predicted values of the vibration signals of each group;
counting the duty ratio of each comparison result in all comparison results, and taking the comparison result with the highest duty ratio as a final comparison result;
determining a performance evaluation result of the breaker opening and closing coil to be evaluated according to the final comparison result;
The determining the performance evaluation result of the breaker opening and closing coil to be evaluated according to the comparison result of the vibration signal actual measurement value and the vibration signal predicted value comprises the following steps:
Outputting a first-level performance evaluation result when the comparison result is that the vibration signal actual measurement value is not larger than the vibration signal predicted value;
Outputting a secondary performance evaluation result when the comparison result is that the vibration signal actual measurement value is larger than the vibration signal predicted value and the difference value between the vibration signal actual measurement value and the vibration signal predicted value does not exceed a preset threshold value;
And outputting a three-level performance evaluation result when the comparison result is that the vibration signal actual measurement value is larger than the vibration signal predicted value and the difference value between the vibration signal actual measurement value and the vibration signal predicted value exceeds a preset threshold value.
6. The utility model provides a circuit breaker divide-shut brake coil performance evaluation device which characterized in that includes:
The vibration sensor comprises a vibration signal sensor, a pressure sensor, a processor and a memory;
The vibration signal sensor and the pressure sensor are arranged on a switching-on/off coil of the circuit breaker to be evaluated;
The processor is respectively in communication connection with the vibration signal sensor, the pressure sensor and the memory;
the vibration signal sensor is used for collecting a vibration signal actual measurement value generated by the circuit breaker opening and closing coil to be evaluated in the opening and closing action process, and sending the vibration signal actual measurement value to the processor;
the pressure sensor is used for collecting an impact force actual measurement value generated by the breaking and closing coil of the circuit breaker to be evaluated in the breaking and closing action process and sending the impact force actual measurement value to the processor;
the processor is used for calling and executing the program stored in the memory;
The memory is used for storing a program at least for executing a circuit breaker opening and closing coil performance evaluation method according to any one of claims 1-4.
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