CN113740776A - Cable sheath grounding circulation fault prediction method, device, equipment and storage medium - Google Patents
Cable sheath grounding circulation fault prediction method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention discloses a method, a device, equipment and a storage medium for predicting a cable sheath grounding circulation fault, which periodically acquire monitoring data of a cable and environmental data of the position of the cable; in the current period, updating a first queue according to monitoring data, and updating a second queue according to environment data, wherein the first queue comprises historically acquired monitoring data, and the second queue comprises historically acquired environment data; determining the state change trend of the cable based on the updated first queue, and determining the environment change trend of the position of the cable based on the updated second queue; and predicting the probability of the cable sheath generating the grounding circulation fault according to the state change trend and the environment change trend. The method solves the technical problems that when the ground circulation fault of the cable sheath is predicted, the change trend of the monitoring data of the cable sheath over a period of history is not considered, and the accuracy of the ground circulation fault prediction result is low.
Description
Technical Field
The embodiment of the application relates to the field of cable sheath detection, in particular to a method, a device, equipment and a storage medium for predicting a grounding circulation fault of a cable sheath.
Background
At present, when a cable is manufactured, a metal sheath is generally arranged outside the cable in order to protect a core of the cable. However, in the process of transmitting electric energy, the metal sheath generates induced voltage due to electromagnetic induction. When the metal sheath is grounded in multiple points for various reasons, the grounding circuit and the metal sheath form a closed loop, so that sheath circulating current is generated, the loss of the sheath is increased, the current-carrying capacity of the cable is influenced, and even the cable is seriously heated and burnt when serious.
At present, when the ground circulation fault of the cable sheath is predicted, the cable sheath is generally monitored in real time, the ground circulation fault is predicted according to the monitored data monitored in real time, and the change trend of the monitored data of the cable sheath in a history period of time is not considered in the process, so that the accuracy of the ground circulation fault prediction result is lower.
Disclosure of Invention
The embodiment of the invention provides a method, a device, equipment and a storage medium for predicting a grounding circulating current fault of a cable sheath, and solves the technical problems that the change trend of monitoring data of the cable sheath over a period of history is not considered when the grounding circulating current fault of the cable sheath is predicted at present, and the accuracy of a grounding circulating current fault prediction result is low.
In a first aspect, a method for predicting a cable sheath ground loop fault provided in an embodiment of the present invention includes the following steps:
periodically acquiring monitoring data of a cable and environmental data of the position of the cable;
in the current period, updating a first queue according to the monitoring data, and updating a second queue according to the environment data, wherein the first queue comprises the monitoring data acquired in a historical manner, and the second queue comprises the environment data acquired in a historical manner;
determining the state change trend of the cable based on the updated first queue, and determining the environment change trend of the position of the cable based on the updated second queue;
and judging whether the cable sheath generates a grounding circulation fault in the next period or not according to the state change trend and the environment change trend.
Preferably, the monitoring data includes cable sheath ground current data, three-phase ground current data, cable joint temperature data, and cable vibration data.
Preferably, the environmental data includes temperature data and humidity data.
Preferably, the first queue and the second queue are both double-ended queues, the first queue includes monitoring data acquired in the first N periods, and the second queue includes environment data acquired in the first N periods;
correspondingly, the specific process of updating the first queue according to the monitoring data and the specific process of updating the second queue according to the environment data are as follows:
adding the monitoring data acquired in the current period to the tail end of the last monitoring data of the first queue, and removing the first monitoring data in the first queue; and adding the environmental data acquired in the current period to the tail end of the last environmental data of the second queue, and removing the first environmental data in the second queue.
Preferably, the specific process of determining whether the cable sheath has the ground loop fault in the next period according to the state change trend and the environment change trend includes:
inputting the state change trend and the environment change trend into a preset data prediction model to obtain a monitoring data prediction value of the next period and an environment data prediction value of the next period;
and inputting the monitoring data predicted value and the environment data predicted value into a preset fault prediction model, and judging whether the cable sheath generates a grounding circulation fault in the next period.
Preferably, the monitoring data further comprises location data of the cable;
correspondingly, after determining whether the cable sheath has a ground loop fault in the next cycle, the method further includes:
and if the cable sheath is judged to have a grounding circulation fault in the next period, determining the position of the cable according to the position data, generating alarm information according to the position of the cable, and pushing the alarm information to a worker with the shortest distance from the position of the cable.
Preferably, after determining whether the cable sheath has a ground loop fault in the next cycle, the method further includes the following steps:
and if the cable sheath is judged to have the grounding circulation fault in the next period, shortening the period for acquiring the monitoring data of the cable and the environmental data of the position where the cable is located until the grounding circulation fault is eliminated.
In a second aspect, an embodiment of the present invention provides a device for predicting a sheath ground loop fault, including:
the data acquisition module is used for periodically acquiring monitoring data of the cable and environmental data of the position where the cable is located;
the queue updating module is used for updating a first queue according to the monitoring data and updating a second queue according to the environment data in the current period, wherein the first queue comprises the monitoring data acquired in a historical manner, and the second queue comprises the environment data acquired in a historical manner;
the trend determining module is used for determining the state change trend of the cable based on the updated first queue and determining the environment change trend of the position where the cable is located based on the updated second queue;
and the fault prediction module is used for judging whether the cable sheath generates a grounding circulation fault in the next period according to the state change trend and the environment change trend.
In a third aspect, an embodiment of the present invention provides an apparatus, where the apparatus includes a processor and a memory;
the memory is used for storing a computer program and transmitting the computer program to the processor;
the processor is configured to execute a method of sheath circulating current fault prediction according to the first aspect according to instructions in the computer program.
In a fourth aspect, embodiments of the present invention provide a storage medium storing computer-executable instructions for performing a method for sheath ground circulation fault prediction as described in the first aspect when the computer processor executes the instructions.
In the embodiment of the present invention, the monitoring data of the cable and the environmental data of the position where the cable is located are obtained periodically; in the current period, updating a first queue according to monitoring data, and updating a second queue according to environment data, wherein the first queue comprises historically acquired monitoring data, and the second queue comprises historically acquired environment data; determining the state change trend of the cable based on the updated first queue, and determining the environment change trend of the position of the cable based on the updated second queue; and predicting the probability of the cable sheath generating the grounding circulation fault according to the state change trend and the environment change trend. After acquiring the monitoring data and the environmental data of the cable in the current period, the embodiment of the invention respectively updates the first queue and the second queue, since the updated first queue and the updated second queue contain historically acquired monitoring data and environmental data, so that when the state change trend and the environment change trend are subsequently generated based on the first queue and the second queue, the state change trend and the environment change trend can respectively reflect the change trends of the monitoring data and the environment data in the recent period of time, and finally, whether the cable sheath has the grounding circulation fault in the next period is judged according to the state change trend and the environment change trend, therefore, the change trend of the monitoring data and the environmental data after a period of time is considered when the earth circulation fault is predicted, and the accuracy of predicting the earth circulation fault of the cable sheath is improved.
Drawings
Fig. 1 is a flowchart of a method for predicting a sheath ground loop fault according to an embodiment of the present invention.
Fig. 2 is a schematic diagram illustrating updating a first queue according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a device for predicting a sheath ground loop fault according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Detailed Description
The following description and the annexed drawings set forth in detail certain illustrative embodiments of the application so as to enable those skilled in the art to practice them. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the embodiments of the present application includes the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the structures, products and the like disclosed by the embodiments, the description is relatively simple because the structures, the products and the like correspond to the parts disclosed by the embodiments, and the relevant parts can be just described by referring to the method part.
Example one
Fig. 1 is a flowchart of a method for predicting a sheath ground loop fault according to an embodiment of the present invention. The method for predicting the sheath ground circulating current fault provided by the embodiment of the invention can be executed by a sheath ground circulating current fault prediction device, the sheath ground circulating current fault prediction device can be realized in a software and/or hardware mode, and the sheath ground circulating current fault prediction device can be composed of two or more physical entities or can be composed of one physical entity. For example, the cable sheath grounding circulating current fault prediction device can be a computer, an upper computer, a server, a flat panel and other devices. The method comprises the following steps:
In one embodiment, the operator presets the cable range to be monitored and the length of time for each cycle before data is acquired. And after the setting is finished, when each period comes, acquiring the monitoring data of the cable in the monitoring range and the environmental data of the position of the cable in the monitoring range. It can be understood that in the present embodiment, the time length of the period can be set according to actual needs, for example, in one embodiment, the time length of each period is set to 10S, that is, data is acquired every 10S, and in the present embodiment, the time length of the period is not specifically set.
On the basis of the above embodiment, the monitoring data includes cable sheath ground current data, three-phase ground current data, cable joint temperature data, and cable vibration data. The three-phase grounding current data comprises grounding current data of each phase of cable of the cable, the temperature data of the cable joint is temperature data of the cable joint, and the vibration data of the cable is amplitude data of vibration of the cable. Because the grounding current data of the cable sheath, the three-phase grounding current data, the temperature data of the cable joint and the vibration data of the cable can reflect the grounding fault of the cable sheath to a certain extent, the cable sheath can at least meet the following conditions when the grounding fault occurs, for example: the grounding current of the cable sheath is more than 100A, the ratio of the grounding cable of the cable sheath to the cable load is more than 50%, the ratio of the maximum value to the minimum value of the single-phase grounding current is more than 5, and the temperature of the cable joint is more than 70 degrees. And according to the cable vibration data, whether the cable is impacted by external force can be judged, when the cable is impacted by larger external force, the cable sheath can be connected with the ground wire due to the insulating performance weakness of the cable sheath, so that the grounding circulation fault occurs, and therefore the cable vibration data can reflect the probability of the grounding circulation fault of the cable sheath to a certain extent. In this embodiment, by obtaining the monitoring data of the cable sheath, whether the cable sheath has a ground fault can be analyzed subsequently on the basis.
In one embodiment, the monitoring data may be collected by placing a sensor on the cable. Illustratively, the current sensor is arranged on the cable to respectively acquire the grounding current data of the cable sheath and the three-phase grounding current data. And a temperature sensor is arranged on the cable joint to acquire temperature data of the cable joint. And a vibration sensor is arranged on the cable to acquire cable vibration data. It can be understood that the manner of acquiring the monitoring data may be set according to actual needs, and the specific manner of acquiring the monitoring data is not limited in this embodiment.
On the basis of the above-described embodiment, the environmental data includes temperature data and humidity data.
It should be noted that the humidity and temperature of the environment in which the cable is located also have a certain influence on the occurrence of the ground fault of the cable sheath. For example, the surface of the sheath is excessively wet, which causes the direct-direct crossing contact to be directly communicated with the ground wire, so that both ends of the sheath of the cable line are connected with the ground wire, and a ground fault occurs, so that the circulation current of the sheath is increased. The temperature of the environment in which the cable is located may affect the temperature of the cable joint to some extent. Therefore, environmental data of the location of the cable is needed to take into account the effect of the environmental data on the occurrence of a ground circulation fault in the cable. In this embodiment, environmental data may be collected by providing a humidity sensor on the cable and a temperature sensor on the cable joint.
102, in the current period, updating a first queue according to the monitoring data, and updating a second queue according to the environmental data, wherein the first queue comprises the monitoring data acquired in a historical manner, and the second queue comprises the environmental data acquired in a historical manner.
And updating the first queue and the second queue by using the monitoring data and the environmental data respectively for the monitoring data and the environmental data acquired in the current period. The first queue and the second queue respectively contain monitoring data acquired in a historical mode and environment data acquired in a historical mode. The queue is updated by the data acquired in the current period, so that the queue not only contains the latest data, but also contains the data acquired in history. It should be noted that, in this embodiment, the first queue and the second queue include the same number of storage units, each storage unit is used to store monitoring data or environmental data, and the storage units are provided in plurality.
On the basis of the above embodiment, the first queue and the second queue are both double-ended queues, the first queue includes monitoring data acquired in the first N periods, and the second queue includes environment data acquired in the first N periods.
It should be further noted that the first queue and the second queue are both double-ended queues, that is, the first queue and the second queue have two ends, and data can be deleted or added in the two ends. In an embodiment, the first queue and the second queue each include N storage units, and data may be deleted or added in the first storage unit or the last storage unit, and the N storage units include data acquired in N cycles, it can be understood that one storage unit includes data acquired in one cycle, for example, the first queue and the second queue each include 6 storage units, the 6 storage units of the first queue respectively include monitoring data acquired in the first 6 cycles, and the 6 storage units of the second queue respectively include environment data acquired in the first 6 cycles. It can be understood that in the first N cycles of the start detection, the storage units in the first queue and the N storage units in the second queue are not filled with data.
Correspondingly, the specific process of updating the first queue according to the monitoring data and the specific process of updating the second queue according to the environmental data are as follows:
adding the monitoring data acquired in the current period to the tail end of the last monitoring data of the first queue, and removing the first monitoring data in the first queue; and adding the environmental data acquired in the current period to the tail end of the last environmental data of the second queue, and removing the first environmental data in the second queue.
In this embodiment, the monitoring data acquired in the current period is added to the end of the last monitoring data in the first queue, and the first monitoring data in the first queue is removed, so that the oldest monitoring data in the first queue is replaced with the newest monitoring data, and the first queue is updated; similarly, the oldest environment data in the second queue is replaced with the newest environment data in the second queue, so that the second queue is updated. Because the monitoring data and the environmental data which are too far away from the current period time cannot reflect the change trend of the monitoring data and the environmental data since the latest period of time in the process of predicting the grounding circulation fault of the cable in the current period, the first monitoring data and the first environmental data are respectively removed from the first queue and the second queue, so that the monitoring data in the first queue and the environmental data in the second queue are ensured to be the monitoring data and the environmental data since the latest period of time. For example, as shown in fig. 2, in an embodiment, the first queue includes 6 storage units (numbers 1 to 6), the 6 storage units of the first queue store monitoring data acquired in the previous 6 cycles, when the first queue is updated, the monitoring data acquired in the current cycle is written into a new storage unit (number 7), the new storage unit is added to the end of the last storage unit of the first queue, and the first storage unit (number 1) of the first queue is deleted, so that the updated first queue is obtained. The update condition of the second queue may refer to the update process of the first queue, which is not described in detail in this embodiment. It can be understood that in the first N cycles of the start detection, the steps of removing the first monitoring data in the first queue and removing the first environment data in the second queue are not performed because the first queue and the second queue are not filled with data, and the deleting step is performed after the first queue and the second queue are filled with data. After the Nth period, the steps of removing the first monitoring data in the first queue and removing the first environment data in the second queue are executed.
And 103, determining the state change trend of the cable based on the updated first queue, and determining the environment change trend of the position of the cable based on the updated second queue.
After the first queue and the second queue are updated, the state change trend of the cable can be determined according to the updated first queue, and the environment change trend of the position where the cable is located can be determined according to the updated second queue. In one embodiment, for the monitoring data, linear fitting is performed according to the sheath grounding current data, the three-phase grounding current data, the cable joint temperature data and the cable vibration data in the first queue, so as to generate a sheath grounding current variation curve, a three-phase grounding current variation curve, a cable joint temperature variation curve and a cable vibration variation curve, i.e. a state variation trend. Similarly, for the environmental data, a humidity change curve and a temperature change curve, that is, an environmental change trend, are generated according to the change of the humidity data and the change of the temperature data in the second queue.
And step 104, judging whether the cable sheath generates a grounding circulation fault in the next period according to the state change trend and the environment change trend.
After the state change trend and the environmental change trend are obtained, whether the cable sheath has the grounding circulation fault in the next period can be judged according to the state change trend and the environmental change trend. In an embodiment, the step 1041 to the step 1042 are specifically executed to determine whether the cable sheath has the ground circulation fault in the next period according to the state variation trend and the environment variation trend, and specifically, the step is executed to:
step 1041, inputting the state change trend and the environment change trend into a preset data prediction model, and obtaining a monitoring data prediction value of the next period and an environment data prediction value of the next period.
In this embodiment, the data prediction model is an LSTM neural network, and first, the state change trend and the environmental change trend are input into the trained data prediction model, so as to obtain the predicted value of the monitoring data in the next period and the predicted value of the environmental data in the next period. Specifically, the process of training the data prediction model is as follows: the method comprises the steps of obtaining historical monitoring data and historical environment data obtained in each period of cable history, dividing the historical monitoring data into a plurality of first data segments according to a time sequence, dividing the historical environment data into a plurality of second data segments according to the time sequence, wherein the quantity of the historical monitoring data contained in each first data segment is the same as that of the monitoring data contained in a first queue, and the quantity of the historical environment data contained in each second data segment is the same as that of the environment data contained in a second queue. Illustratively, if the first queue includes 6 monitoring data, the historical monitoring data is divided into a plurality of first data segments according to the time sequence, each first data segment includes 6 historical monitoring data, and a historical state change trend is generated according to each first data segment. And then, marking the acquired historical monitoring data corresponding to the next period of the first data segment in each historical state change trend, obtaining a monitoring data training set after marking, and similarly obtaining an environmental data training set in the same manner, which is not repeated in this embodiment. And then, inputting a first data segment of the monitoring data training set and a second data segment of the environment data training set into a data prediction model, judging whether the value output by the data prediction model is the same as the historical monitoring data marked in the input first data segment and the historical environment data marked in the input second data segment, and when the accuracy of the value output by the data prediction model reaches a set first threshold value, determining that the data prediction model is trained to obtain the trained data prediction model.
Step 1042, inputting the predicted value of the monitoring data and the predicted value of the environmental data into a preset fault prediction model, and judging whether the cable sheath has a grounding loop fault in the next period.
In one embodiment, the fault prediction model adopts a BP neural network, fault monitoring data and fault environment data of a cable which historically generates a ground circulation fault are obtained, the fault monitoring data and the fault environment data are marked with the occurrence of the ground circulation fault, a training set is obtained after marking is completed, the fault prediction model is trained by using the training set, and when the fault prediction model judges that the accuracy of the occurrence of the ground circulation fault reaches a set second threshold value, the fault prediction model is determined to be trained completely, so that the trained fault prediction model is obtained.
After the monitoring data predicted value and the environmental data prediction output by the data prediction model are obtained, the environmental data predicted value and the monitoring data predicted value are input into a trained fault prediction model, and the fault prediction model judges whether the cable sheath has a ground fault in the next period so that a worker can take corresponding measures.
In one embodiment, if it is determined that the cable sheath has a ground circulation fault in the next period, an alarm message is sent to the command center, so that the command center can know that the cable sheath has the ground circulation fault.
On the basis of the above embodiment, the monitoring data further includes position data of the cable;
correspondingly, after judging whether the cable sheath has the ground circulation fault in the next period, the method further comprises the following steps:
and if the cable sheath is judged to have the grounding circulation fault in the next period, determining the position of the cable according to the position data, generating alarm information according to the position of the cable, and pushing the alarm information to a worker with the shortest distance from the position of the cable.
In one embodiment, if the fault prediction model determines that the cable sheath has a ground circulation fault in the next period, the fault prediction model extracts the position data of the cable from the monitoring data corresponding to the cable, determines the position of the cable according to the position data of the cable, and then generates alarm information according to the position of the cable, and sends the alarm information to the worker who has the shortest distance from the position of the cable, so that the worker can know the position of the cable with the ground circulation fault in the cable sheath, and then repair the cable on site. By sending the alarm information to the staff with the shortest distance to the cable, the staff can go to the site in the shortest time, the maintenance efficiency is improved, and the cable sheath grounding circulation fault is prevented from further deteriorating.
On the basis of the above embodiment, after determining whether the cable sheath has a ground loop fault in the next cycle, the method further includes the following steps:
and if the cable sheath is judged to have the grounding circulation fault in the next period, shortening the period for acquiring the monitoring data of the cable and the environmental data of the position of the cable until the grounding circulation fault is eliminated.
In one embodiment, if a ground circulation fault occurs in the cable sheath in the next period, detection should be enhanced in the next period, and the period for acquiring monitoring data of the cable and environmental data of the position where the cable is located should be shortened, so that when the ground circulation fault occurs, the time when the ground circulation fault occurs can be more accurately located, and after the ground circulation fault is eliminated, the period is restored to the period before the ground circulation fault occurs. Illustratively, before the occurrence of the ground circulation fault, the time length of each period is 10S, that is, the monitoring data of the cable and the environmental data of the position where the cable is located are acquired every 10S, and if it is determined that the cable sheath has the ground circulation fault in the next period, the time length of the period is shortened to 2S, that is, the monitoring data of the cable and the environmental data of the position where the cable is located are acquired every 2S, so that the detection of the cable is enhanced, the time when the ground circulation fault occurs in the cable sheath can be more accurately captured, so that a subsequent worker can analyze the cause of the ground circulation fault, and after the ground circulation fault is eliminated, the period is recovered from 2S to 10S.
As described above, after acquiring the monitoring data and the environmental data of the cable in the current period, the embodiment of the present invention updates the first queue and the second queue respectively, since the updated first queue and the updated second queue contain historically acquired monitoring data and environmental data, so that when the state change trend and the environment change trend are subsequently generated based on the first queue and the second queue, the state change trend and the environment change trend can respectively reflect the change trends of the monitoring data and the environment data in the recent period of time, and finally, whether the cable sheath has the grounding circulation fault in the next period is judged according to the state change trend and the environment change trend, therefore, the change trend of the monitoring data and the environmental data in the recent period of time in history is considered when the earth circulation fault is predicted, and the accuracy of predicting the earth circulation fault of the cable sheath is improved.
Example two
As shown in fig. 3, fig. 3 provides a device for predicting a sheath ground loop fault according to an embodiment of the present invention, including:
the data acquisition module 201 is used for periodically acquiring monitoring data of the cable and environmental data of the position of the cable;
a queue updating module 202, configured to update a first queue according to the monitoring data in the current cycle, and update a second queue according to the environment data, where the first queue includes the historically acquired monitoring data, and the second queue includes the historically acquired environment data;
the trend determining module 203 determines the state change trend of the cable based on the updated first queue and determines the environment change trend of the position of the cable based on the updated second queue;
and the fault prediction module 204 is configured to determine whether the cable sheath has a ground loop fault in the next period according to the state change trend and the environment change trend.
On the basis of the above embodiment, the monitoring data includes cable sheath ground current data, three-phase ground current data, cable joint temperature data, and cable vibration data.
On the basis of the above-described embodiment, the environmental data includes temperature data and humidity data.
On the basis of the embodiment, the first queue and the second queue are both double-ended queues, the first queue contains monitoring data acquired in the first N periods, and the second queue contains environment data acquired in the first N periods;
correspondingly, the queue updating module 202 is configured to update the first queue according to the monitoring data, and the updating the second queue according to the environment data specifically includes:
the monitoring data processing device is used for adding the monitoring data acquired in the current period to the tail end of the last monitoring data of the first queue and removing the first monitoring data in the first queue; and adding the environmental data acquired in the current period to the tail end of the last environmental data of the second queue, and removing the first environmental data in the second queue.
On the basis of the foregoing embodiment, the fault prediction module 204 is configured to determine whether the cable sheath has a ground loop fault in the next period according to the state change trend and the environment change trend, specifically:
the system comprises a data prediction model, a state change trend model and a data prediction model, wherein the data prediction model is used for inputting the state change trend and the environment change trend into the preset data prediction model to obtain a monitoring data prediction value of the next period and an environment data prediction value of the next period;
and inputting the monitoring data predicted value and the environmental data predicted value into a preset fault prediction model, and judging whether the cable sheath generates a grounding circulation fault in the next period.
On the basis of the above embodiment, the monitoring data further includes position data of the cable;
correspondingly, the system also comprises an alarm information generating module which is used for determining the position of the cable according to the position data if the cable sheath is judged to have the grounding circulation fault in the next period, generating alarm information according to the position of the cable and pushing the alarm information to the staff with the shortest distance to the position of the cable.
On the basis of the above embodiment, the apparatus further includes a period adjustment module, configured to shorten a period for acquiring monitoring data of the cable and environmental data of a location where the cable is located if it is determined that the cable sheath has a ground circulation fault in a next period, until the ground circulation fault is eliminated.
EXAMPLE III
The present embodiment also provides an apparatus, as shown in fig. 4, an apparatus 30, which includes a processor 300 and a memory 301;
the memory 301 is used for storing the computer program 302 and transmitting the computer program 302 to the processor;
the processor 300 is configured to execute the steps of one embodiment of the method for predicting sheath circulating current fault as described above according to instructions in the computer program 302.
Illustratively, the computer program 302 may be divided into one or more modules/units, which are stored in the memory 301 and executed by the processor 300 to accomplish the present application. One or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of computer program 302 in device 30.
The device 30 may be a computing device such as a desktop computer, a notebook, a palm top computer, and a cloud server. The device may include, but is not limited to, a processor 300, a memory 301. Those skilled in the art will appreciate that fig. 4 is merely an example of a device 30 and does not constitute a limitation of device 30 and may include more or fewer components than shown, or some components may be combined, or different components, e.g., the device may also include input-output devices, network access devices, buses, etc.
The Processor 300 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 301 may be an internal storage unit of the device 30, such as a hard disk or a memory of the device 30. The memory 301 may also be an external storage device of the device 30, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), etc., provided on the device 30. Further, the memory 301 may also include both internal storage units of the device 30 and external storage devices. The memory 301 is used to store computer programs and other programs and data required by the device. The memory 301 may also be used to temporarily store data that has been output or is to be output.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing computer programs.
Example four
Embodiments of the present invention further provide a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method for sheath ground circulating fault prediction, the method comprising:
periodically acquiring monitoring data of the cable and environmental data of the position of the cable;
in the current period, updating a first queue according to monitoring data, and updating a second queue according to environment data, wherein the first queue comprises historically acquired monitoring data, and the second queue comprises historically acquired environment data;
determining the state change trend of the cable based on the updated first queue, and determining the environment change trend of the position of the cable based on the updated second queue;
and judging whether the cable sheath generates grounding circulation faults in the next period or not according to the state change trend and the environment change trend.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will appreciate that the embodiments of the present invention are not limited to the specific embodiments described herein, and that various obvious changes, adaptations, and substitutions are possible, without departing from the scope of the embodiments of the present invention. Therefore, although the embodiments of the present invention have been described in more detail through the above embodiments, the embodiments of the present invention are not limited to the above embodiments, and many other equivalent embodiments may be included without departing from the concept of the embodiments of the present invention, and the scope of the embodiments of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A cable sheath grounding circulation fault prediction method is characterized by comprising the following steps:
periodically acquiring monitoring data of a cable and environmental data of the position of the cable;
in the current period, updating a first queue according to the monitoring data, and updating a second queue according to the environment data, wherein the first queue comprises the monitoring data acquired in a historical manner, and the second queue comprises the environment data acquired in a historical manner;
determining the state change trend of the cable based on the updated first queue, and determining the environment change trend of the position of the cable based on the updated second queue;
and judging whether the cable sheath generates a grounding circulation fault in the next period or not according to the state change trend and the environment change trend.
2. The method of claim 1, wherein the monitored data includes sheath ground current data, three-phase ground current data, cable splice temperature data, and cable vibration data.
3. The method of claim 2, wherein the environmental data includes temperature data and humidity data.
4. The method according to claim 3, wherein the first queue and the second queue are both double-ended queues, the first queue contains monitoring data acquired in the first N periods, and the second queue contains environmental data acquired in the first N periods;
correspondingly, the specific process of updating the first queue according to the monitoring data and the specific process of updating the second queue according to the environment data are as follows:
adding the monitoring data acquired in the current period to the tail end of the last monitoring data of the first queue, and removing the first monitoring data in the first queue; and adding the environmental data acquired in the current period to the tail end of the last environmental data of the second queue, and removing the first environmental data in the second queue.
5. The method for predicting a sheath ground circulating fault as claimed in claim 1, wherein the specific process of determining whether a cable sheath has a ground circulating fault in a next period according to the state variation trend and the environment variation trend is as follows:
inputting the state change trend and the environment change trend into a preset data prediction model to obtain a monitoring data prediction value of the next period and an environment data prediction value of the next period;
and inputting the monitoring data predicted value and the environment data predicted value into a preset fault prediction model, and judging whether the cable sheath generates a grounding circulation fault in the next period.
6. The sheath ground circulating current fault prediction method of claim 1 wherein the monitored data further includes location data of the cable;
correspondingly, after determining whether the cable sheath has a ground loop fault in the next cycle, the method further includes:
and if the cable sheath is judged to have a grounding circulation fault in the next period, determining the position of the cable according to the position data, generating alarm information according to the position of the cable, and pushing the alarm information to a worker with the shortest distance from the position of the cable.
7. The method as recited in claim 1, wherein said step of determining whether a circulating ground fault occurs in the sheath in the next period further comprises the steps of:
and if the cable sheath is judged to have the grounding circulation fault in the next period, shortening the period for acquiring the monitoring data of the cable and the environmental data of the position where the cable is located until the grounding circulation fault is eliminated.
8. A sheath ground circulation fault prediction apparatus, comprising:
the data acquisition module is used for periodically acquiring monitoring data of the cable and environmental data of the position where the cable is located;
the queue updating module is used for updating a first queue according to the monitoring data and updating a second queue according to the environment data in the current period, wherein the first queue comprises the monitoring data acquired in a historical manner, and the second queue comprises the environment data acquired in a historical manner;
the trend determining module is used for determining the state change trend of the cable based on the updated first queue and determining the environment change trend of the position where the cable is located based on the updated second queue;
and the fault prediction module is used for judging whether the cable sheath generates a grounding circulation fault in the next period according to the state change trend and the environment change trend.
9. An apparatus, comprising a processor and a memory;
the memory is used for storing a computer program and transmitting the computer program to the processor;
the processor is configured to execute a method for sheath ground circulation fault prediction according to any one of claims 1-7 according to instructions in the computer program.
10. A storage medium storing computer-executable instructions for performing a method of sheath ground circulation fault prediction as recited in any one of claims 1-7 when executed by a computer processor.
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