CN113495199A - Power equipment safety monitoring method and system - Google Patents
Power equipment safety monitoring method and system Download PDFInfo
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- CN113495199A CN113495199A CN202111052554.2A CN202111052554A CN113495199A CN 113495199 A CN113495199 A CN 113495199A CN 202111052554 A CN202111052554 A CN 202111052554A CN 113495199 A CN113495199 A CN 113495199A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
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Abstract
The invention is suitable for the field of computers, and provides a power equipment safety monitoring method and a system, wherein the position information of a follower is converted into an electromagnetic field value by acquiring the position information uploaded by a monitoring end; the position information is the position information of the follower in the monitoring end, the position of the follower can change along with the size of the electromagnetic field generated around the cable, and the real-time monitoring of the change condition of the electromagnetic field around the cable can be realized. Further judging whether the electromagnetic field value is in the electromagnetic field fluctuation interval; and when the electromagnetic field value is not in the electromagnetic field fluctuation interval, sending abnormal electricity utilization reminding information to the execution end for reminding monitoring personnel or maintenance personnel to maintain the power equipment. This monitored control system need not do the destruction repacking to power equipment, only need add around the cable establish the control end can, appear leaking to power equipment, the control feedback speed of short circuit scheduling problem is fast and accurate, can remind maintenance personal or control personnel the very first time.
Description
Technical Field
The invention belongs to the field of computers, and particularly relates to a method and a system for monitoring safety of power equipment.
Background
With the development of social economy, the improvement of the automation degree of production, the liberation of labor force and the improvement of life quality, a large amount of electric energy driving equipment is put into production and life, and the dependence degree of people on electric power is higher and higher. Reliability and continuity of power supply have become one of the important concerns of the whole society.
In order to ensure the safe operation of the production electric equipment, the real-time online monitoring of incoming and outgoing circuits in the field distribution room is required. The existing monitoring method is to implement an automatic meter reading function on an electric meter of the electric power equipment, then obtain a power trend curve of the electric power equipment according to the obtained electric meter data, the power trend curve can visually display the working state and time of each loop, and find out abnormal electric loops on the fitted power trend curve and correct the abnormal electric loops in time.
However, the power trend curve fitted through the power utilization condition of the power equipment has a certain hysteresis for monitoring the power equipment, the power utilization condition of the power equipment is accumulated on a certain basis or the power utilization condition is fed back to the power trend curve after the abnormal power utilization condition is generated, the abnormal power utilization is generated at this time, certain damage is caused to the power equipment, irreversible damage is caused after long-time abnormal operation, the power equipment needs to be replaced, the operation cost is increased, and the reliability and the continuity of power supply cannot be ensured.
Disclosure of Invention
The embodiment of the invention provides a method and a system for monitoring the safety of electric power equipment, and aims to solve the problems that the conventional method for monitoring the safety of the electric power equipment has certain hysteresis, certain damage is caused to the electric power equipment, irreversible damage is caused due to long-time abnormal operation, the electric power equipment needs to be replaced, the operation cost is increased, and the reliability and the continuity of power supply cannot be ensured.
The embodiment of the invention is realized in such a way that, on one hand, a method for monitoring the safety of electric power equipment comprises the following steps:
acquiring position information uploaded by a monitoring terminal; the position information is the position information of a follower in the monitoring end, and the position of the follower can change along with the size of an electromagnetic field generated around the cable;
converting the position information of the follower into an electromagnetic field value;
judging whether the electromagnetic field value is in an electromagnetic field fluctuation interval or not;
when the electromagnetic field value is not in the electromagnetic field fluctuation interval, sending abnormal electricity utilization reminding information to the execution end; and the abnormal electricity utilization reminding information is used for reminding monitoring personnel or maintenance personnel to maintain the power equipment.
As a modified scheme of the invention: the acquiring of the position information uploaded by the monitoring terminal and the converting of the position information of the follower into an electromagnetic field value specifically includes:
acquiring an electric signal uploaded by a monitoring terminal; when the follower is at different positions in the electromagnetic field, the generated electric signals are different;
polling an electric signal conversion value table according to the electric signal to find an electromagnetic field value corresponding to the electric signal;
capturing clock data of the power equipment in operation in real time to acquire time point information generated by an electromagnetic field;
and the electromagnetic field value corresponds to the electromagnetic field generation time point information one by one.
As a further improvement of the invention: the method for determining the electromagnetic field fluctuation interval specifically comprises the following steps:
obtaining an electromagnetic field theoretical value according to the current in the cable, the current fluctuation and the thickness of the cable;
and (4) floating the theoretical value of the electromagnetic field up and down to predict percentage points, obtaining an upper limit value and a lower limit value of an electromagnetic field fluctuation interval, and forming the electromagnetic field fluctuation interval.
As another improvement of the invention: when the electromagnetic field value is not in the electromagnetic field fluctuation interval, sending the abnormal electricity utilization reminding information to the execution end specifically comprises:
when the electromagnetic field value is not in the electromagnetic field fluctuation interval, continuously acquiring the electromagnetic field value indicated by the monitoring terminal in the next unit time;
judging whether the electromagnetic field value acquired in the next unit time is in an electromagnetic field fluctuation interval or not;
when the electromagnetic field value acquired in the next unit time is in the electromagnetic field fluctuation interval, the power equipment is started or stopped or is connected with new power equipment, so that the electromagnetic field value in the cable of the power equipment is caused to generate violent fluctuation in a short time, and the power equipment belongs to a safe and normal operation state;
and when the electromagnetic field value acquired in the next unit time is not in the electromagnetic field fluctuation interval, the power equipment is in an abnormal operation state, and abnormal electricity utilization reminding information is sent to the execution end.
As a further scheme of the invention: when the electromagnetic field value is not in the electromagnetic field fluctuation interval, after sending the abnormal electricity utilization reminding information to the execution end, the method further comprises the following steps:
acquiring misjudgment information fed back by an execution end; the misjudgment information indicates that the power equipment is in a normal operation state at the time point of the current electromagnetic field value generation even if the currently judged electromagnetic field value is not in the electromagnetic field fluctuation interval;
accumulating the quantity of the received misjudgment information;
when the number of the misjudgment information exceeds the threshold value, the electromagnetic field value which is often misjudged belongs to a normal value, and the magnetic field fluctuation interval is corrected.
As a further scheme of the invention: the correcting the magnetic field fluctuation interval specifically comprises:
judging the magnitude relation between the misjudged electromagnetic field value and the upper limit value and the lower limit value of the electromagnetic field fluctuation interval;
when the misjudged electromagnetic field value is larger than the upper limit value, the upper limit value is modified into the misjudged electromagnetic field value to form a modified electromagnetic field fluctuation interval;
and when the misjudged electromagnetic field value is smaller than the lower limit value, modifying the lower limit value into the misjudged electromagnetic field value to form a modified electromagnetic field fluctuation interval.
As an optimization scheme of the invention: the monitoring end is at least arranged at the cable access end and the cable output end of the power equipment and the cable branch access end and the cable output end.
As another scheme of the invention: the monitoring method further comprises the following steps:
coding monitoring ends at different ports on different cables;
binding and matching the codes with the position information uploaded by the corresponding monitoring terminal and the subsequent electromagnetic field value converted according to the position information;
when the electromagnetic field value is not in the electromagnetic field fluctuation interval, sending abnormal electricity utilization reminding information to the execution end; the abnormal electricity utilization reminding information at least comprises coded information of a monitoring terminal code.
In another aspect, a power device safety monitoring system includes:
the position information acquisition module is used for acquiring the position information uploaded by the monitoring terminal; the position information is the position information of a follower in the monitoring end, and the position of the follower can change along with the size of an electromagnetic field generated around the cable;
the position information conversion module is used for converting the position information of the follower into an electromagnetic field value;
the electromagnetic field value judging module is used for judging whether the electromagnetic field value is in an electromagnetic field fluctuation interval or not;
the reminding information sending module is used for sending abnormal electricity utilization reminding information to the execution end when the electromagnetic field value is not in the electromagnetic field fluctuation interval; and the abnormal electricity utilization reminding information is used for reminding monitoring personnel or maintenance personnel to maintain the power equipment.
The invention has the beneficial effects that: converting the position information of the follower into an electromagnetic field value by acquiring the position information uploaded by the monitoring end; the position information is the position information of the follower in the monitoring end, the position of the follower can change along with the size of the electromagnetic field generated around the cable, and the real-time monitoring of the change condition of the electromagnetic field around the cable can be realized. Further judging whether the electromagnetic field value is in the electromagnetic field fluctuation interval; and when the electromagnetic field value is not in the electromagnetic field fluctuation interval, sending abnormal electricity utilization reminding information to the execution end for reminding monitoring personnel or maintenance personnel to maintain the power equipment. This monitored control system need not do the destruction repacking to power equipment, only need add around the cable establish the control end can, appear leaking to power equipment, the control feedback speed of short circuit scheduling problem is fast and accurate, can remind maintenance personal or control personnel the very first time. The method solves the problems that the existing power equipment safety monitoring method has certain hysteresis, certain damage is caused to the power equipment, irreversible damage can be caused by long-time abnormal operation, the power equipment needs to be replaced, the operation cost is increased, and the reliability and the continuity of power supply cannot be ensured.
Drawings
FIG. 1 is a schematic diagram of an operating environment of a power equipment safety monitoring method;
FIG. 2 is a main flow chart of a power equipment safety monitoring method;
FIG. 3 is a flow chart of position information conversion in a method for monitoring safety of an electrical power device;
FIG. 4 is a flow chart of electromagnetic field value monitoring and determining in a power equipment safety monitoring method;
FIG. 5 is a flow chart of magnetic field fluctuation interval correction in a power equipment safety monitoring method;
fig. 6 is a schematic diagram of an internal structure of a power equipment safety monitoring system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
According to the invention, the position information of the follower is converted into an electromagnetic field value by acquiring the position information uploaded by the monitoring terminal; the position information is the position information of the follower in the monitoring end, the position of the follower can change along with the size of the electromagnetic field generated around the cable, and the real-time monitoring of the change condition of the electromagnetic field around the cable can be realized. Further judging whether the electromagnetic field value is in the electromagnetic field fluctuation interval; and when the electromagnetic field value is not in the electromagnetic field fluctuation interval, sending abnormal electricity utilization reminding information to the execution end for reminding monitoring personnel or maintenance personnel to maintain the power equipment. This monitored control system need not do the destruction repacking to power equipment, only need add around the cable establish the control end can, appear leaking to power equipment, the control feedback speed of short circuit scheduling problem is fast and accurate, can remind maintenance personal or control personnel the very first time. The method solves the problems that the existing power equipment safety monitoring method has certain hysteresis, certain damage is caused to the power equipment, irreversible damage can be caused by long-time abnormal operation, the power equipment needs to be replaced, the operation cost is increased, and the reliability and the continuity of power supply cannot be ensured.
Fig. 1 is a schematic diagram illustrating an operating environment of a power equipment safety monitoring method according to an embodiment of the present invention, wherein a power equipment safety monitoring system interacts information with a monitoring terminal 1 and an execution terminal 2; the monitoring terminals 1 may be multiple and distributed at different positions of the cable, such as an incoming end and an outgoing end of the cable, a cable branch, or multiple middle sections of the cable; the monitoring end can monitor the current change condition in the power equipment cable in real time, and whether the power equipment is in a normal operation state can be further monitored from the current change. The execution end 2 is arranged at a place which is easy to be checked around a user, and is preferably in wireless communication with the electrical equipment safety monitoring system.
Fig. 2 shows a main flow chart of a power equipment safety monitoring method according to an embodiment of the present invention, where the monitoring method includes:
step S10: and acquiring the position information uploaded by the monitoring terminal. The position information is the position information of the follower in the monitoring end, and the position of the follower can change along with the size of the electromagnetic field generated around the cable. The follower in the monitoring terminal can be a permanent magnet or an elastic iron piece, when the current in the cable changes, the electromagnetic field around the cable also changes, and the position of the follower in the corresponding monitoring terminal can also change along with the change of the electromagnetic field due to the repulsion or attraction of the electromagnetic field.
Step S11: and converting the position information of the follower into an electromagnetic field value. The position information of the follower cannot be well determined only by the specific magnetic field intensity generated by the current, and the position information needs to be converted into an electromagnetic field value for the convenience of realizing the subsequent process.
Step S12: and judging whether the electromagnetic field value is in the electromagnetic field fluctuation interval. The electromagnetic field fluctuation interval is set because the current in the cable cannot be constant all the time during the operation of the power equipment, for example, during peak use in summer, the bulb will turn on and turn off, because the current in the circuit is reduced due to more power equipment, but the reduced current is enough to support the bulb to turn on. Similarly, when the power equipment is in operation, the current in the circuit may also become larger or smaller, but this does not affect the normal operation of the power equipment, so the electromagnetic field formed around the cable also varies normally within a range. And as long as the electromagnetic field value is in the range, the state that the power equipment is in normal operation can be reflected laterally.
Step S13: and when the electromagnetic field value is not in the electromagnetic field fluctuation interval, sending abnormal electricity utilization reminding information to the execution end. And the abnormal electricity utilization reminding information is used for reminding monitoring personnel or maintenance personnel to maintain the power equipment.
Step S14: and when the electromagnetic field value is within the electromagnetic field fluctuation interval, the abnormal electricity utilization reminding information is not sent.
In one aspect of this embodiment, the method for determining the electromagnetic field fluctuation interval specifically includes:
step S20: and obtaining the electromagnetic field theoretical value according to the current in the cable, the current fluctuation and the thickness of the cable. Since the magnitude of the electromagnetic field is related to the magnitude of the current and the thickness of the cable or wire and secondly to the position of the follower in the monitoring terminal, but the position of the follower becomes a constant once fixed.
Step S21: and (4) floating the theoretical value of the electromagnetic field up and down to predict percentage points, obtaining an upper limit value and a lower limit value of an electromagnetic field fluctuation interval, and forming the electromagnetic field fluctuation interval. The floating and floating values of the floating prediction percentile can be different or the same, the floating prediction percentile is determined according to the past empirical value, and the value of the floating prediction percentile can be changed according to the change of historical data in the later period.
Fig. 3 shows a flow chart of converting position information in a method for monitoring safety of electrical equipment according to an embodiment of the present invention, where the acquiring position information uploaded by a monitoring terminal and converting the position information of a follower into an electromagnetic field value specifically includes:
step S101: and acquiring the electric signal uploaded by the monitoring terminal. The electrical signal generated is different when the follower is in different positions in the electromagnetic field. In order to facilitate the monitoring end to upload the position information of the follower to a monitoring system, a position sensor is arranged on the motion track of the follower, when the follower reaches different positions, different sensors send different electric signals, and therefore the position information of the follower can be converted into the electric signals which can be immediately recognized by the monitoring system, and the internal software operation flow of the monitoring system is simplified through hardware facilities.
Step S102: and polling an electric signal conversion value table according to the electric signal to find the electromagnetic field value corresponding to the electric signal. When the follower is at different positions, the corresponding sensor is triggered to send out corresponding electric signals, and the position corresponds to a unique electromagnetic field value, so that the electric signals and the electromagnetic field values are in one-to-one correspondence, the correspondence is recorded into a monitoring system in advance to form an electric signal value conversion table, when the monitoring end feeds back one electric signal, the electric signal value conversion table can immediately convert the electromagnetic field value, and the complicated calculation process is omitted.
Step S103: clock data of the power equipment in operation are captured in real time to acquire time point information generated by the electromagnetic field. To monitor the operating time of the power equipment.
Step S104: and the electromagnetic field value corresponds to the electromagnetic field generation time point information one by one. In order to know the accurate time of the event when the power equipment is abnormal.
Fig. 4 shows a flowchart of monitoring and determining an electromagnetic field value in a method for monitoring safety of electrical equipment according to an embodiment of the present invention, where sending an abnormal electricity utilization reminding message to an execution end when the electromagnetic field value is not within an electromagnetic field fluctuation interval specifically includes:
step S130: and when the electromagnetic field value is not in the electromagnetic field fluctuation interval, continuously acquiring the electromagnetic field value indicated by the monitoring terminal in the next unit time. This is done to further verify whether the abnormal condition is true, because when the power equipment is started or stopped, or when other high-power equipment is connected to the circuit where the power equipment is located, or other power equipment on the same circuit is stopped, the current in the cable fluctuates greatly, and then the current gradually recovers to a normal value, and the fluctuation of the current is only temporary and does not affect the operation of the power equipment.
Step S131: and judging whether the electromagnetic field value acquired in the next unit time is in the electromagnetic field fluctuation interval.
Step S132: when the electromagnetic field value acquired in the next unit time is in the electromagnetic field fluctuation interval, the power equipment is started or stopped or is connected with new power equipment, so that the electromagnetic field value in the cable of the power equipment is caused to generate violent fluctuation in a short time, and the power equipment belongs to a safe and normal operation state.
Step S133: and when the electromagnetic field value acquired in the next unit time is not in the electromagnetic field fluctuation interval, the power equipment is in an abnormal operation state, and abnormal electricity utilization reminding information is sent to the execution end.
Fig. 5 shows a flow chart of correcting a magnetic field fluctuation interval in a power equipment safety monitoring method according to an embodiment of the present invention, where after sending an abnormal electricity utilization reminding message to an execution end when an electromagnetic field value is not in the electromagnetic field fluctuation interval, the method further includes:
step S30: and acquiring misjudgment information fed back by the execution end. The misjudgment information indicates that the power equipment is in a normal operation state at the time point when the current electromagnetic field value is generated even if the currently judged electromagnetic field value is not within the electromagnetic field fluctuation interval. Because the initial setting of the electromagnetic field fluctuation interval is set according to the empirical value, in the process of practical application, normal operation of power equipment may occur, but the electromagnetic field value generated around the cable is not in the electromagnetic field fluctuation interval, so that the condition of misjudgment is caused.
Step S31: and accumulating the quantity of the received misjudgment information. In order to prevent the situation from being accidental, the situations are further accumulated, and when the accumulated quantity reaches a preset value, the situation is not an accidental event.
Step S32: when the number of the misjudgment information exceeds the threshold value, the electromagnetic field value which is often misjudged belongs to a normal value, and the magnetic field fluctuation interval is corrected. And the standard value of the accidental event is not calculated after the preset number of times of the events considered by the monitoring personnel.
In one aspect of this embodiment, the correcting the magnetic field fluctuation interval specifically includes:
step S320: and judging the magnitude relation between the misjudged electromagnetic field value and the upper limit value and the lower limit value of the electromagnetic field fluctuation interval. This is to judge whether the expansion direction of the electromagnetic field fluctuation interval is downward correction or upward correction.
Step S321: and when the misjudged electromagnetic field value is larger than the upper limit value, modifying the upper limit value into the misjudged electromagnetic field value to form a modified electromagnetic field fluctuation interval.
Step S322: and when the misjudged electromagnetic field value is smaller than the lower limit value, modifying the lower limit value into the misjudged electromagnetic field value to form a modified electromagnetic field fluctuation interval.
In addition, the monitoring end is at least arranged at the cable access end and the cable outlet end of the power equipment as well as the cable branch access end and the cable outlet end. The cable that sets up like this is in order to each highway section to power equipment can both monitor, when taking place abnormal conditions, can be quick find the cable that goes wrong even fix a position the position that goes wrong like this, reduces the time of problem investigation, and the continuity and the reliability of power supply are guaranteed to the speed of maintenance with higher speed.
The monitoring method further comprises the following steps:
step S40: the monitoring terminals at different ports on different cables are encoded.
Step S41: and binding and matching the codes with the position information uploaded by the corresponding monitoring terminal and the subsequent electromagnetic field value converted according to the position information.
Step S42: and when the electromagnetic field value is not in the electromagnetic field fluctuation interval, sending abnormal electricity utilization reminding information to the execution end. The abnormal electricity utilization reminding information at least comprises coded information of a monitoring terminal code. The method aims to quickly locate the cable with problems or the interval with problems in the power equipment and reduce the time for troubleshooting the problems.
Fig. 6 shows an internal structural schematic diagram of a power equipment safety monitoring system according to an embodiment of the present invention, where the monitoring system includes:
and a location information obtaining module 100, configured to obtain location information uploaded by the monitoring terminal. The position information is the position information of the follower in the monitoring end, and the position of the follower can change along with the size of the electromagnetic field generated around the cable.
And the position information conversion module 200 is used for converting the position information of the follower into an electromagnetic field value.
And an electromagnetic field value judging module 300, configured to judge whether the electromagnetic field value is within an electromagnetic field fluctuation interval.
And the reminding information sending module 400 is configured to send abnormal electricity utilization reminding information to the execution end when the electromagnetic field value is not within the electromagnetic field fluctuation interval. And the abnormal electricity utilization reminding information is used for reminding monitoring personnel or maintenance personnel to maintain the power equipment.
In order to load the above method and system to operate properly, the system may include more or less components than those described above, or combine some components, or different components, in addition to the various modules described above, for example, input/output devices, network access devices, buses, processors, memories, etc.
The Processor 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. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the client or the control center of the social system, and various interfaces and lines connecting the various parts of the overall user terminal.
The memory may be used to store a computer and system programs and/or modules, and the processor may implement various functions of the client by running or executing the computer programs and/or modules stored in the memory and calling data stored in the memory. The memory mainly comprises a storage program area and a storage data area, wherein the storage program area can store an operating system, application programs (such as an information acquisition template display function, a product information publishing function and the like) required by at least one function and the like; the storage data area may store data created according to the use of the berth-state display system (e.g., product information acquisition templates corresponding to different product types, product information that needs to be issued by different product providers, etc.), and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
It should be understood that, although the steps in the flowcharts of the embodiments of the present invention are shown in sequence as indicated by the arrows, the steps are not necessarily executed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in various embodiments may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A power equipment safety monitoring method is characterized by comprising the following steps:
acquiring position information uploaded by a monitoring terminal; the position information is the position information of a follower in the monitoring end, and the position of the follower can change along with the size of an electromagnetic field generated around the cable;
converting the position information of the follower into an electromagnetic field value;
judging whether the electromagnetic field value is in an electromagnetic field fluctuation interval or not;
when the electromagnetic field value is not in the electromagnetic field fluctuation interval, sending abnormal electricity utilization reminding information to the execution end; and the abnormal electricity utilization reminding information is used for reminding monitoring personnel or maintenance personnel to maintain the power equipment.
2. The electrical equipment safety monitoring method of claim 1, wherein the acquiring the position information uploaded by the monitoring terminal and converting the position information of the follower into the electromagnetic field value specifically comprises:
acquiring an electric signal uploaded by a monitoring terminal; when the follower is at different positions in the electromagnetic field, the generated electric signals are different;
polling an electric signal conversion value table according to the electric signal to find an electromagnetic field value corresponding to the electric signal;
capturing clock data of the power equipment in operation in real time to acquire time point information generated by an electromagnetic field;
and the electromagnetic field value corresponds to the electromagnetic field generation time point information one by one.
3. The electrical equipment safety monitoring method according to claim 1, wherein the method for determining the electromagnetic field fluctuation interval specifically comprises:
obtaining an electromagnetic field theoretical value according to the current in the cable, the current fluctuation and the thickness of the cable;
and (4) floating the theoretical value of the electromagnetic field up and down to predict percentage points, obtaining an upper limit value and a lower limit value of an electromagnetic field fluctuation interval, and forming the electromagnetic field fluctuation interval.
4. The electrical equipment safety monitoring method according to claim 1, wherein the sending of the abnormal electricity utilization reminding information to the execution end when the electromagnetic field value is not within the electromagnetic field fluctuation interval specifically comprises:
when the electromagnetic field value is not in the electromagnetic field fluctuation interval, continuously acquiring the electromagnetic field value indicated by the monitoring terminal in the next unit time;
judging whether the electromagnetic field value acquired in the next unit time is in an electromagnetic field fluctuation interval or not;
when the electromagnetic field value acquired in the next unit time is in the electromagnetic field fluctuation interval, the power equipment is started or stopped or is connected with new power equipment, so that the electromagnetic field value in the cable of the power equipment is caused to generate violent fluctuation in a short time, and the power equipment belongs to a safe and normal operation state;
and when the electromagnetic field value acquired in the next unit time is not in the electromagnetic field fluctuation interval, the power equipment is in an abnormal operation state, and abnormal electricity utilization reminding information is sent to the execution end.
5. The electrical equipment safety monitoring method according to claim 3, wherein after sending the abnormal electricity utilization reminding information to the execution end when the electromagnetic field value is not within the electromagnetic field fluctuation interval, the method further comprises:
acquiring misjudgment information fed back by an execution end; the misjudgment information indicates that the power equipment is in a normal operation state at the time point of the current electromagnetic field value generation even if the currently judged electromagnetic field value is not in the electromagnetic field fluctuation interval;
accumulating the quantity of the received misjudgment information;
when the number of the misjudgment information exceeds the threshold value, the electromagnetic field value which is often misjudged belongs to a normal value, and the magnetic field fluctuation interval is corrected.
6. The electrical equipment safety monitoring method according to claim 5, wherein the correcting the magnetic field fluctuation interval specifically comprises:
judging the magnitude relation between the misjudged electromagnetic field value and the upper limit value and the lower limit value of the electromagnetic field fluctuation interval;
when the misjudged electromagnetic field value is larger than the upper limit value, the upper limit value is modified into the misjudged electromagnetic field value to form a modified electromagnetic field fluctuation interval;
and when the misjudged electromagnetic field value is smaller than the lower limit value, modifying the lower limit value into the misjudged electromagnetic field value to form a modified electromagnetic field fluctuation interval.
7. The electrical equipment safety monitoring method according to any one of claims 1 to 6, wherein the monitoring terminals are installed at least at a cable incoming terminal, a cable outgoing terminal, and an incoming terminal and an outgoing terminal of a cable branch of the electrical equipment.
8. The power device security monitoring method of claim 7, wherein the method further comprises:
coding monitoring ends at different ports on different cables;
binding and matching the codes with the position information uploaded by the corresponding monitoring terminal and the subsequent electromagnetic field value converted according to the position information;
when the electromagnetic field value is not in the electromagnetic field fluctuation interval, sending abnormal electricity utilization reminding information to the execution end; the abnormal electricity utilization reminding information at least comprises coded information of a monitoring terminal code.
9. A power equipment safety monitoring system, the monitoring system comprising:
the position information acquisition module is used for acquiring the position information uploaded by the monitoring terminal; the position information is the position information of a follower in the monitoring end, and the position of the follower can change along with the size of an electromagnetic field generated around the cable;
the position information conversion module is used for converting the position information of the follower into an electromagnetic field value;
the electromagnetic field value judging module is used for judging whether the electromagnetic field value is in an electromagnetic field fluctuation interval or not;
the reminding information sending module is used for sending abnormal electricity utilization reminding information to the execution end when the electromagnetic field value is not in the electromagnetic field fluctuation interval; and the abnormal electricity utilization reminding information is used for reminding monitoring personnel or maintenance personnel to maintain the power equipment.
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