CN117630534A - Lightning arrester detection method, device, storage medium and lightning arrester detection system - Google Patents
Lightning arrester detection method, device, storage medium and lightning arrester detection system Download PDFInfo
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Abstract
The application provides a lightning arrester detection method, a lightning arrester detection device, a storage medium and a lightning arrester detection system. The method comprises the following steps: acquiring harmonic components of the lightning arrester to be tested and a humidity value inside the lightning arrester to be tested; acquiring a pre-measured harmonic variation coefficient corresponding to the lightning arrester to be measured; the harmonic change coefficient is a coefficient which is obtained by carrying out experiments on the lightning arrester of the experimental group and is used for reflecting the correlation between the harmonic component of the lightning arrester and the humidity; calculating the product of the harmonic variation coefficient and the humidity value to obtain a first state parameter; the first state parameter is used for reflecting the influence of humidity on harmonic components of the lightning arrester to be tested; calculating the difference between the harmonic component and the first state parameter of the initial state corresponding to the lightning arrester to be tested to obtain a second state parameter; the initial state harmonic component is a harmonic component of the lightning arrester in the initial health state measured by experiments; the second state parameter is used for reflecting the aging degree of the lightning arrester to be tested. The application can detect the influence that humidity and ageing factor caused to the arrester respectively.
Description
Technical Field
The application relates to the technical field of power electronic detection, in particular to a lightning arrester detection method, a lightning arrester detection device, a storage medium and a lightning arrester detection system.
Background
The lightning arrester is main equipment for lightning protection in a power system, is used for protecting electric equipment from high transient overvoltage, and can limit the freewheel time and freewheel amplitude, so that the lightning arrester is widely applied to various power transmission lines and power equipment stations. The lightning arrester is generally arranged in an outdoor environment, and after a period of use, conditions such as voltage-sensitive voltage reduction, leakage current increase and the like possibly caused by reasons such as damp, aging and the like are generated, so that the safety operation of equipment protected by the lightning arrester is not facilitated.
At present, the state of the lightning arrester is mainly evaluated according to the change condition of characteristic data parameters of leakage current under different defect types. However, the reason that the lightning arrester is affected cannot be determined specifically, and the degree of the impact of different factors on the lightning arrester cannot be obtained, so that the fault of the lightning arrester cannot be removed in a targeted manner during the monitoring of the running state of the lightning arrester.
Disclosure of Invention
The embodiment of the application provides a lightning arrester detection method, device, storage medium and lightning arrester detection system, which can respectively detect the influence of humidity and aging factors on the lightning arrester, and further can conduct targeted processing and optimization.
In a first aspect, the present application provides a lightning arrester detection method, the method comprising:
acquiring harmonic components of a lightning arrester to be tested and a humidity value inside the lightning arrester to be tested;
acquiring a pre-measured harmonic variation coefficient corresponding to the lightning arrester to be measured; the harmonic change coefficient is a coefficient which is obtained by carrying out experiments on the lightning arrester of the experimental group and is used for reflecting the correlation between harmonic components and humidity of the lightning arrester;
calculating the product of the harmonic variation coefficient and the humidity value to obtain a first state parameter; the first state parameter is used for reflecting the influence of humidity on harmonic components of the lightning arrester to be tested;
calculating the difference between the harmonic component and the first state harmonic component corresponding to the lightning arrester to be tested and the first state parameter to obtain a second state parameter; the initial state harmonic component is a harmonic component of the lightning arrester in an initial health state measured through experiments; and the second state parameter is used for reflecting the aging degree of the lightning arrester to be tested.
In one embodiment, the step of experimentally measuring the harmonic variation coefficient of the lightning arresters of the experimental group includes:
controlling a humidity regulating device to change the humidity value inside each experimental group lightning arrester; the number of the lightning arresters in the experimental group is n groups, and n is a positive integer greater than 1;
collecting harmonic component data of lightning arresters of each experimental group under different humidity values;
respectively establishing a humidity-harmonic component change line graph for each group of lightning arresters based on the corresponding relation between the collected harmonic component data and the humidity value;
calculating the slope of each broken line in the humidity-harmonic component change line graph of each experimental group arrester, and calculating the average value of the slopes of each broken line as the harmonic change parameter of the corresponding experimental group arrester;
and calculating the average value of the harmonic variation parameters of the lightning arresters of each experimental group to obtain the harmonic variation coefficient.
In one embodiment, the method further comprises:
judging whether the second state parameter is larger than a preset first threshold value or not;
and if the second state parameter is larger than the first threshold value, judging that the aging degree of the lightning arrester to be tested is serious.
In one embodiment, the method further comprises:
if the aging degree of the lightning arrester to be tested is judged to be serious, a replacement prompt is sent out; the replacement prompt is used for prompting operation and maintenance personnel to replace the lightning arrester to be tested.
In one embodiment, the method further comprises:
judging whether the first state parameter is larger than a preset second threshold value or not;
if the first state parameter is larger than the second threshold value, an abnormality prompt is sent out; the abnormal prompt is used for prompting operation and maintenance personnel that the lightning arrester to be tested is affected by the humidity to be too high.
In a second aspect, the present application provides an arrester detection apparatus comprising:
the first acquisition module is used for acquiring harmonic components of the lightning arrester to be tested and humidity values inside the lightning arrester to be tested;
the second acquisition module is used for acquiring a pre-measured harmonic variation coefficient corresponding to the lightning arrester to be measured; the harmonic change coefficient is a coefficient which is obtained by carrying out experiments on the lightning arrester of the experimental group and is used for reflecting the correlation between harmonic components and humidity of the lightning arrester;
the first calculation module is used for calculating the product of the harmonic variation coefficient and the humidity value to obtain a first state parameter; the first state parameter is used for reflecting the influence of humidity on harmonic components of the lightning arrester to be tested;
the second calculation module is used for calculating the difference between the harmonic component and the first state harmonic component corresponding to the lightning arrester to be detected and the first state parameter to obtain a second state parameter; the initial state harmonic component is a harmonic component of the lightning arrester in an initial health state measured through experiments; and the second state parameter is used for reflecting the aging degree of the lightning arrester to be tested.
In one embodiment, the apparatus further comprises:
and the first judging module is used for judging whether the second state parameter is larger than a preset first threshold value, and judging that the aging degree of the lightning arrester to be tested is serious if the second state parameter is larger than the first threshold value.
In one embodiment, the apparatus further comprises:
the second judging module is used for judging whether the first state parameter is larger than a preset second threshold value or not, and if the first state parameter is larger than the second threshold value, an abnormality prompt is sent out; the abnormal prompt is used for prompting operation and maintenance personnel that the lightning arrester to be tested is affected by the humidity to be too high.
In a third aspect, the present application provides a storage medium having stored therein computer readable instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of a lightning arrester detection method as described in any of the above.
In a fourth aspect, the present application provides an arrester detection system comprising:
the harmonic data acquisition device is used for acquiring harmonic components of the lightning arrester to be tested;
the humidity detection device is used for detecting the humidity value inside the lightning arrester to be detected;
the experimental device is used for carrying out experimental tests on the lightning arresters of the experimental group to obtain harmonic variation coefficients;
a state monitoring device configured with one or more processors, and a memory; the memory has stored therein computer readable instructions which, when executed by the one or more processors, perform the steps of the lightning arrester detection method as described in any of the above.
From the above technical solutions, the embodiments of the present application have the following advantages:
according to the lightning arrester detection method, the device, the storage medium and the lightning arrester detection system, the harmonic variation coefficient reflecting the correlation between the harmonic component and humidity of the lightning arrester is obtained through experimental tests, and the first state parameter can be obtained according to the humidity value and the harmonic variation coefficient in the lightning arrester to be detected, so that the lightning arrester detection method, the device, the storage medium and the lightning arrester detection system can be used for evaluating the influence degree of humidity on the operation of the lightning arrester to be detected; in addition, based on the harmonic component actually measured by the lightning arrester, the first state parameter and the initial state harmonic component are subjected to difference, the influence of humidity on the lightning arrester is eliminated, and the second state parameter capable of reflecting the ageing degree of the lightning arrester is obtained, so that the humidity and the ageing degree in main reasons affecting the performance of the lightning arrester are respectively evaluated, and the influence reasons are processed and optimized in a targeted manner.
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In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a block diagram of an arrester detection system in one embodiment;
FIG. 2 is a flow chart of a method of lightning arrester detection in one embodiment;
FIG. 3 is a flow chart of experimental measurement of harmonic variation coefficients for an experimental group arrester in one embodiment;
fig. 4 is a block diagram showing a structure of a lightning arrester detecting device in one embodiment;
fig. 5 is an internal structural diagram of the condition monitoring apparatus in one embodiment.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
As shown in fig. 1, an embodiment of the present application provides a lightning arrester detection system 100, including: a harmonic data acquisition device 101, a humidity detection device 102, an experimental device 103 and a state monitoring device 104. The harmonic data acquisition device 101 is used for acquiring harmonic components of the lightning arrester to be tested; the humidity detection device 102 is used for detecting the humidity value inside the lightning arrester to be detected; the experimental device 103 is used for carrying out experimental tests on the lightning arresters of the experimental group to obtain harmonic variation coefficients; the condition monitoring device 104 is configured with one or more processors, and memory; the memory has stored therein computer readable instructions which, when executed by the one or more processors, perform the steps of the arrester detection method as described below.
As shown in fig. 2, in one embodiment, the present application provides a lightning arrester detection method, taking the condition monitoring device applied in fig. 1 as an example for explanation, the method includes:
and step S201, acquiring harmonic components of the lightning arrester to be tested and a humidity value inside the lightning arrester to be tested.
The harmonic component of the lightning arrester to be tested is collected by the harmonic data collection device and then sent to the state monitoring device. The inside humidity detection device that all is provided with of the arrester that awaits measuring that needs to detect, humidity sensor, the inside humidity value of arrester that awaits measuring is gathered through humidity detection device.
Step S202, obtaining a harmonic variation coefficient corresponding to the lightning arrester to be tested, which is measured in advance.
The harmonic change coefficient is a coefficient which is experimentally measured on the lightning arrester of the experimental group and is used for reflecting the correlation between the harmonic component of the lightning arrester and the humidity. The arrester body types are numerous, the harmonic variation coefficients of the arresters of different models possibly have differences, in order to ensure the detection accuracy, when the harmonic variation coefficients are tested through experiments, the arresters of different models can be tested respectively, the harmonic variation coefficients are stored in an associated mode according to the models, and the corresponding harmonic variation coefficients are obtained according to the models of the arresters to be tested when the arresters are detected.
In step S203, the product of the harmonic variation coefficient and the humidity value is calculated to obtain the first state parameter.
The first state parameter is used for reflecting the influence of humidity on harmonic components of the lightning arrester to be tested. The first state parameter is substantially a harmonic component variation value due to humidity. The influence of the current humidity on the running state of the lightning arrester to be measured can be judged by detecting the first state parameter, and the running state of the lightning arrester to be measured can be judged more accurately by judging according to the first state parameter compared with the direct judgment of the humidity value due to the performance difference of different lightning arresters.
And step S204, calculating the difference between the harmonic component and the first state harmonic component corresponding to the lightning arrester to be tested and the first state parameter to obtain a second state parameter.
The initial state harmonic component is a harmonic component of the lightning arrester in an initial healthy state, which is measured through experiments, namely, the harmonic component of the lightning arrester in a state of no damp and no aging is generated, and is used as an initial reference value; the second state parameter is used for reflecting the aging degree of the lightning arrester to be tested.
The lightning arrester to be tested is influenced by the aging degree and the humidity in the use process, so that harmonic components are changed, the harmonic component change quantity of the lightning arrester to be tested, which is compared with the initial health state, is obtained by subtracting the initial state harmonic components from the real-time harmonic components obtained through detection, the change caused by the humidity is removed by subtracting the first state parameters, and finally the second state parameters, namely the harmonic component change quantity of the lightning arrester to be tested, which is caused by the aging degree, are obtained, the aging degree of the lightning arrester to be tested is reflected, and the aging degree is quantitatively evaluated and monitored.
According to the lightning arrester detection method, the harmonic variation coefficient reflecting the correlation between the harmonic component of the lightning arrester and the humidity is obtained through experimental tests, and the first state parameter can be obtained according to the humidity value and the harmonic variation coefficient in the lightning arrester to be detected, so that the method can be used for evaluating the influence degree of the humidity on the operation of the lightning arrester to be detected; in addition, based on the harmonic component actually measured by the lightning arrester, the first state parameter and the initial state harmonic component are subjected to difference, the influence of humidity on the lightning arrester is eliminated, and the second state parameter capable of reflecting the ageing degree of the lightning arrester is obtained, so that the humidity and the ageing degree in main reasons affecting the performance of the lightning arrester are respectively evaluated, and the influence reasons are processed and optimized in a targeted manner.
As shown in fig. 3, in one embodiment, the step of experimentally measuring the harmonic variation coefficient of the lightning arresters of the experimental group includes:
and step S301, controlling a humidity adjusting device to change the humidity value inside each experimental group of lightning arresters.
The number of the lightning arresters in the experimental group is n groups, and n is a positive integer greater than 1. A group of test group arresters includes one or more arresters of the same type and that are not subject to aging. The humidity adjusting device can be humidifying equipment arranged inside the lightning arrester; the humidity test box with adjustable humidity can be used for adjusting the humidity by placing the lightning arrester of the experimental group in the humidity test box so as to realize the purpose of changing the humidity value in the lightning arrester of the experimental group.
And step S302, collecting harmonic component data of lightning arresters of each experimental group under different humidity values.
And collecting the harmonic component time of the lightning arrester of the experimental group through a harmonic data collecting device.
And step S303, respectively establishing a humidity-harmonic component change line graph for each group of lightning arresters based on the corresponding relation between the collected harmonic component data and the humidity value.
If the lightning arresters in the experimental group comprise a plurality of lightning arresters, a humidity-harmonic component change line diagram is respectively built for each lightning arrestor.
And S304, calculating the slope of each broken line in the humidity-harmonic component change line graph of each experimental group of lightning arresters, and calculating the average value of the slopes of each broken line as the harmonic change parameter of the corresponding experimental group of lightning arresters.
If the group of the experiment group lightning arresters comprises a plurality of lightning arresters, respectively calculating the average value of the slope of each broken line of the humidity harmonic component change broken line graph of each lightning arrester to obtain the harmonic change parameter of each lightning arrester, and taking the average value of the harmonic change parameters of each lightning arrester in the group of the experiment group of lightning arresters as the harmonic change parameter of the group of the experiment group of lightning arresters.
And step S305, calculating the average value of the harmonic variation parameters of the lightning arresters of each experimental group to obtain the harmonic variation coefficient.
In this embodiment, humidity adjustment test is performed by setting up the experiment group arrester, and the change condition of arrester and harmonic component under the humidity influence is tested to through setting up the experiment respectively of multiunit experiment group arrester, reduce the error, improve the authenticity of harmonic change coefficient. By harmonic variation coefficient k bz Can judge the influence of the damp degree on the lightning arrester, when k bz The larger the lightning arrester is, the larger the impact of the damp is, so that corresponding measures need to be taken, such as increasing the moisture resistance of the lightning arrester or developing and improving the impact degree caused by the damp.
In one embodiment, the lightning arrester detection method further comprises:
judging whether the second state parameter is larger than a preset first threshold value or not;
and if the second state parameter is larger than the first threshold value, judging that the aging degree of the lightning arrester to be tested is serious.
In the embodiment, the aging degree is automatically evaluated by setting the first threshold value, so that intelligent monitoring is realized, and the aged lightning arrester which needs to be replaced can be timely and effectively found.
In one embodiment, the lightning arrester detection method further comprises:
if the aging degree of the lightning arrester to be tested is serious, a replacement prompt is sent out; the replacement prompt is used for prompting operation and maintenance personnel to replace the lightning arrester to be tested.
In this embodiment, in order to be convenient for operation and maintenance personnel monitor, send out and change the suggestion when judging that the ageing degree of arrester that awaits measuring is serious, instruct operation and maintenance personnel to handle in time. In one embodiment, the replacement prompt may be displayed at the arrester end or at the operation center. In some embodiments, the replacement prompt may also be sent to a communication terminal of an operation and maintenance person corresponding to the jurisdiction to which the arrester to be tested belongs.
In one embodiment, the lightning arrester detection method further comprises:
judging whether the first state parameter is larger than a preset second threshold value or not;
if the first state parameter is greater than the second threshold value, an abnormality prompt is sent out; the abnormal prompt is used for prompting operation and maintenance personnel that the lightning arrester to be tested is too high in influence of humidity.
In the embodiment, the damping degree is automatically evaluated by setting the second threshold value, so that intelligent monitoring is realized, a lightning arrester to be tested with higher damping degree can be timely and effectively found, and an abnormal prompt is sent to prompt operation and maintenance personnel to process.
In one embodiment, the anomaly prompt may be displayed at the arrester end or at the operation center. In some embodiments, the anomaly prompt may also be sent to a communication terminal of an operation and maintenance person corresponding to the jurisdiction to which the arrester to be tested belongs.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
The following describes the lightning arrester detection apparatus provided in the embodiments of the present application, and the lightning arrester detection apparatus described below and the lightning arrester detection method described above may be referred to correspondingly to each other.
As shown in fig. 4, an embodiment of the present application provides a lightning arrester detection apparatus 400, including:
a first obtaining module 401, configured to obtain a harmonic component of a lightning arrester to be tested and a humidity value inside the lightning arrester to be tested;
a second obtaining module 402, configured to obtain a harmonic variation coefficient corresponding to the lightning arrester to be tested, which is measured in advance; the harmonic change coefficient is a coefficient which is obtained by carrying out experiments on the lightning arrester of the experimental group and is used for reflecting the correlation between harmonic components and humidity of the lightning arrester;
a first calculating module 403, configured to calculate a product of the harmonic variation coefficient and the humidity value to obtain a first state parameter; the first state parameter is used for reflecting the influence of humidity on harmonic components of the lightning arrester to be tested;
the second calculating module 404 is configured to calculate a difference between the harmonic component and the first state harmonic component corresponding to the lightning arrester to be tested, and obtain a second state parameter; the initial state harmonic component is a harmonic component of the lightning arrester in an initial health state measured through experiments; and the second state parameter is used for reflecting the aging degree of the lightning arrester to be tested.
In one embodiment, the lightning arrester detection apparatus further comprises:
and the first judging module is used for judging whether the second state parameter is larger than a preset first threshold value, and judging that the aging degree of the lightning arrester to be tested is serious if the second state parameter is larger than the first threshold value.
In one embodiment, the lightning arrester detection apparatus further comprises:
the prompting module is used for sending out a replacement prompt when judging that the aging degree of the lightning arrester to be tested is serious; the replacement prompt is used for prompting operation and maintenance personnel to replace the lightning arrester to be tested.
In one embodiment, the apparatus further comprises:
the second judging module is used for judging whether the first state parameter is larger than a preset second threshold value or not, and if the first state parameter is larger than the second threshold value, an abnormality prompt is sent out; the abnormal prompt is used for prompting operation and maintenance personnel that the lightning arrester to be tested is affected by the humidity to be too high.
The division of the modules in the lightning arrester detection apparatus is for illustration only, and in other embodiments, the lightning arrester detection apparatus may be divided into different modules as needed to perform all or part of the functions of the lightning arrester detection apparatus. The respective modules in the lightning arrester detection apparatus described above may be implemented in whole or in part by software, hardware, or a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, the present application also provides a storage medium having stored therein computer readable instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of the lightning arrester detection method as described in any of the embodiments above.
In one embodiment, the internal structural diagram of the condition monitoring device may be as shown in FIG. 5. The state monitoring device comprises a processor, a memory, a communication interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the condition monitoring device is configured to provide computing and control capabilities. The memory of the condition monitoring device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface of the state monitoring device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program when executed by a processor implements a lightning arrester detection method. The display screen of the state monitoring device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the state monitoring device can be a touch layer covered on the display screen, can also be a key, a track ball or a touch pad arranged on the shell of the state monitoring device, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in fig. 5 is merely a block diagram of a portion of the structure associated with the present application and is not limiting of the condition monitoring apparatus to which the present application is applied, and that a particular condition monitoring apparatus may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.
In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and may be combined according to needs, and the same similar parts may be referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of lightning arrester detection, the method comprising:
acquiring harmonic components of a lightning arrester to be tested and a humidity value inside the lightning arrester to be tested;
acquiring a pre-measured harmonic variation coefficient corresponding to the lightning arrester to be measured; the harmonic change coefficient is a coefficient which is obtained by carrying out experiments on the lightning arrester of the experimental group and is used for reflecting the correlation between harmonic components and humidity of the lightning arrester;
calculating the product of the harmonic variation coefficient and the humidity value to obtain a first state parameter; the first state parameter is used for reflecting the influence of humidity on harmonic components of the lightning arrester to be tested;
calculating the difference between the harmonic component and the first state harmonic component corresponding to the lightning arrester to be tested and the first state parameter to obtain a second state parameter; the initial state harmonic component is a harmonic component of the lightning arrester in an initial health state measured through experiments; and the second state parameter is used for reflecting the aging degree of the lightning arrester to be tested.
2. The method for detecting an arrester according to claim 1, wherein the step of experimentally measuring the harmonic variation coefficient for the arrester of the experimental group includes:
controlling a humidity regulating device to change the humidity value inside each experimental group lightning arrester; the number of the lightning arresters in the experimental group is n groups, and n is a positive integer greater than 1;
collecting harmonic component data of lightning arresters of each experimental group under different humidity values;
respectively establishing a humidity-harmonic component change line graph for each group of lightning arresters based on the corresponding relation between the collected harmonic component data and the humidity value;
calculating the slope of each broken line in the humidity-harmonic component change line graph of each experimental group arrester, and calculating the average value of the slopes of each broken line as the harmonic change parameter of the corresponding experimental group arrester;
and calculating the average value of the harmonic variation parameters of the lightning arresters of each experimental group to obtain the harmonic variation coefficient.
3. The arrester detection method of claim 1, wherein the method further comprises:
judging whether the second state parameter is larger than a preset first threshold value or not;
and if the second state parameter is larger than the first threshold value, judging that the aging degree of the lightning arrester to be tested is serious.
4. A method of detecting a lightning arrester according to claim 3, further comprising:
if the aging degree of the lightning arrester to be tested is judged to be serious, a replacement prompt is sent out; the replacement prompt is used for prompting operation and maintenance personnel to replace the lightning arrester to be tested.
5. The arrester detection method of claim 1, wherein the method further comprises:
judging whether the first state parameter is larger than a preset second threshold value or not;
if the first state parameter is larger than the second threshold value, an abnormality prompt is sent out; the abnormal prompt is used for prompting operation and maintenance personnel that the lightning arrester to be tested is affected by the humidity to be too high.
6. A lightning arrester detection device, comprising:
the first acquisition module is used for acquiring harmonic components of the lightning arrester to be tested and humidity values inside the lightning arrester to be tested;
the second acquisition module is used for acquiring a pre-measured harmonic variation coefficient corresponding to the lightning arrester to be measured; the harmonic change coefficient is a coefficient which is obtained by carrying out experiments on the lightning arrester of the experimental group and is used for reflecting the correlation between harmonic components and humidity of the lightning arrester;
the first calculation module is used for calculating the product of the harmonic variation coefficient and the humidity value to obtain a first state parameter; the first state parameter is used for reflecting the influence of humidity on harmonic components of the lightning arrester to be tested;
the second calculation module is used for calculating the difference between the harmonic component and the first state harmonic component corresponding to the lightning arrester to be detected and the first state parameter to obtain a second state parameter; the initial state harmonic component is a harmonic component of the lightning arrester in an initial health state measured through experiments; and the second state parameter is used for reflecting the aging degree of the lightning arrester to be tested.
7. The lightning arrester detection apparatus of claim 6, wherein the apparatus further comprises:
and the first judging module is used for judging whether the second state parameter is larger than a preset first threshold value, and judging that the aging degree of the lightning arrester to be tested is serious if the second state parameter is larger than the first threshold value.
8. The lightning arrester detection apparatus of claim 6, wherein the apparatus further comprises:
the second judging module is used for judging whether the first state parameter is larger than a preset second threshold value or not, and if the first state parameter is larger than the second threshold value, an abnormality prompt is sent out; the abnormal prompt is used for prompting operation and maintenance personnel that the lightning arrester to be tested is affected by the humidity to be too high.
9. A storage medium, characterized by: the storage medium having stored therein computer readable instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of the lightning arrester detection method of any of claims 1 to 5.
10. A lightning arrester detection system, comprising:
the harmonic data acquisition device is used for acquiring harmonic components of the lightning arrester to be tested;
the humidity detection device is used for detecting the humidity value inside the lightning arrester to be detected;
the experimental device is used for carrying out experimental tests on the lightning arresters of the experimental group to obtain harmonic variation coefficients;
a state monitoring device configured with one or more processors, and a memory; the memory has stored therein computer readable instructions which, when executed by the one or more processors, perform the steps of the arrester detection method of any of claims 1 to 5.
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