Monitoring and early warning method and early warning device for equipment in switch room

Abstract

The invention provides a monitoring and early-warning method and device for equipment in a switch room, and belongs to the technical field of early-warning devices, and the method specifically comprises the steps: determining the change consistency between the monitoring data of a humidity monitoring device of a sealing risk monitoring target and the humidity monitoring data in the switch room, and carrying out the early-warning of the equipment in the switch room; determining the target with the sealing state suspected to change of the sealing risk monitoring target based on the change consistency condition after the arc discharge time period, and determining the sealing state of the sealing risk monitoring target according to the monitoring data of the arc light sensor in each target with the sealing state suspected to change and the verification processing mode when secondary verification processing needs to be carried out. Based on the verification result of the humidity monitoring data in the switch room and the monitoring data of the arc light sensor, the switch cabinet needing to send out the early warning signal is determined, and the corrosion risk of the switch cabinet caused by too high humidity is reduced.

Description

Technical Field

[0001] This invention belongs to the field of early warning device technology, and particularly relates to a method and device for monitoring and early warning of equipment in a switch room. Background Technology

[0002] Insulation defects inevitably occur in switchgear during operation, which can lead to safety risks in the operation of the switchgear. Therefore, how to monitor and analyze the operation status of switchgear, issue timely and effective early warning signals, and reduce the occurrence of safety accidents has become an urgent technical problem to be solved.

[0003] To address the aforementioned technical problems, existing solutions utilize IoT devices such as humidity and temperature monitoring devices to monitor and provide early warnings for switchgear. Specific implementation schemes are provided in CN202210865372.5 "A Monitoring and Early Warning System for Switchgear" and CN202210936083.X "An Early Warning Method, System, and Storage Medium for Switchgear Temperature." However, all of these solutions suffer from the following technical issues: When an electric arc occurs in a switchgear, the insulating gas SF6 decomposes, especially in high humidity conditions, where it decomposes into hydrogen fluoride (HF). HF is highly corrosive and can cause pulmonary edema and skin burns, thus affecting the safety of the switchgear's switching devices. Therefore, how to output early warning signals based on humidity monitoring data from the switchgear to address corrosion risks promptly and ensure the reliable operation of the switchgear has become an urgent technical problem to be solved.

[0004] To address the aforementioned technical problems, this application provides a method and device for monitoring and early warning of equipment in a switch room. Summary of the Invention

[0005] To achieve the objectives of this invention, the following technical solution is adopted: Specifically, this application provides a method for monitoring and early warning of equipment in a switchgear room, which includes: S1 takes the switch cabinet with arc light sensor installed in the switch room as the monitoring target, and determines the matching of monitoring data in each environmental humidity range based on the monitoring data of the humidity monitoring device of the monitoring target. Based on the matching, the sealing risk monitoring target in the monitoring target is determined. Based on the monitoring data of the arc light sensor of each sealing risk monitoring target, the verification and processing method of humidity monitoring data in the switch room is determined. S2 determines the monitoring data of the humidity monitoring device of the sealing risk monitoring target and the consistency of the changes with the humidity monitoring data in the switch room. Based on the consistency of the changes after the arcing period, it determines the target whose sealing status is suspected to have changed. Based on the monitoring data of the arc light sensor in each target where the sealing status is suspected to have changed, and the verification processing method, S3 determines which switch cabinets need to issue a warning signal when a secondary verification process is required, based on the verification results of the humidity monitoring data in the switch room and the monitoring data of the arc light sensor.

[0006] The beneficial effects of this invention are as follows: Based on the consistency of changes after the arcing period, targets with suspected changes in sealing status are identified for sealing risk monitoring. This fully considers the possibility of changes in sealing status due to corrosion after the arcing period, which in turn affects the consistency between the humidity monitoring data of the switchgear and the humidity monitoring data of the environment. This enables the identification of switchgear with corrosion risks, that is, the identification of targets with suspected changes in sealing status. It also lays the foundation for further early warning processing and ensures the operational reliability of the switchgear.

[0007] Based on the verification results of humidity monitoring data in the switch room and the monitoring data of the arc sensor, the switchgear that needs to issue an early warning signal is determined. This not only takes into account the differences in the reliability of the environmental humidity monitoring data in the switch room due to the differences in the verification results, but also combines the differences in the number of arcing periods of targets with suspected changes in sealing status, which leads to differences in corrosion risk. Thus, the determination of switchgear that needs to issue an early warning signal is achieved from the perspective of the corrosion risk of the switchgear itself and the reliability of the environmental temperature monitoring data, thereby improving the timeliness of alarm handling for switchgear with corrosion risk.

[0008] Furthermore, the arc sensor is a sensor for detecting arcing during the operation of the switch cabinet.

[0009] Furthermore, both the arc light sensor and the humidity monitoring device are installed in the switch cabinet.

[0010] Furthermore, the consistency of the monitoring data is determined based on the similarity between the monitoring data of the humidity monitoring device in the switch cabinet and the monitoring data of the humidity monitoring device in the switch room.

[0011] Furthermore, the method for determining the sealing risk monitoring target among the monitoring targets is as follows: Based on the matching of monitoring data in each ambient humidity range, the time period in which the monitoring data of the switch cabinet humidity monitoring device falls within the corresponding ambient humidity range is determined and taken as the overlapping time period. Based on the overlapping time period, determine whether the monitoring target is a sealing risk monitoring target.

[0012] Furthermore, the method for determining the switchgear that needs to issue an early warning signal is as follows: Based on the verification results of humidity monitoring data in the switch room, the consistency between the humidity monitoring data in the switch room and the humidity monitoring data of switch cabinets that do not need to be sealed is determined at different times. Based on the consistency situation, determine the number of times when the humidity monitoring data of the switch cabinet that does not need to be sealed is inconsistent with that of the switch room, and determine the switch cabinets with inconsistent monitoring data in the switch cabinets that do not need to be sealed. Based on the monitoring data of the arc sensor of the target whose sealing status is suspected to have changed, and the switch cabinet data with inconsistent monitoring data, the switch cabinets that need to issue an early warning signal are identified.

[0013] Secondly, the present invention provides an early warning device, employing the aforementioned method for monitoring and warning of equipment in a switch room, specifically including: Verification method determination module, target identification module, alarm processing module; The verification method determination module is responsible for determining the verification processing method for humidity monitoring data in the switch room; The target identification module is responsible for identifying targets whose sealing status is suspected to have changed during the sealing risk monitoring. The alarm processing module is responsible for determining which switch cabinets require an early warning signal.

[0014] Other features and advantages will be set forth in the following description, and the objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0015] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] The above and other features and advantages of the present invention will become more apparent from a detailed description of exemplary embodiments thereof with reference to the accompanying drawings.

[0017] Figure 1 This is a flowchart of a method for monitoring and early warning of equipment in a switch room; Figure 2 This is a flowchart illustrating the method for determining the sealing risk monitoring target within the monitoring objectives; Figure 3 This is a flowchart illustrating the method for determining the verification and processing of humidity monitoring data within the switch room; Figure 4 This is a flowchart illustrating the method for identifying targets whose sealing status is suspected to have changed during sealing risk monitoring. Figure 5This is a schematic diagram of an early warning device. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments of this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0019] This application achieves the screening of switchgear with suspected abnormal sealing conditions by determining the consistency between the changes in humidity monitoring data in the switch room and the switchgear with suspected deterioration in sealing due to arcing. Furthermore, by verifying the humidity monitoring data in the switch room, it determines whether switchgear with suspected deterioration in sealing needs to be given an early warning based on the reliability of the humidity monitoring data in the switch room. This enables early warning of switchgear with potential corrosion risks.

[0020] Example 1 like Figure 1 As shown, this application provides a method for monitoring and early warning of equipment in a switchgear room, specifically including: S1 takes the switch cabinet with arc light sensor installed in the switch room as the monitoring target, and determines the matching of monitoring data in each environmental humidity range based on the monitoring data of the humidity monitoring device of the monitoring target. Based on the matching, the sealing risk monitoring target in the monitoring target is determined. Based on the monitoring data of the arc light sensor of each sealing risk monitoring target, the verification and processing method of humidity monitoring data in the switch room is determined. Furthermore, the arc sensor is a sensor for detecting arcing during the operation of the switch cabinet.

[0021] It is understandable that during the operation of the switchgear, arcing may occur due to excessive power or inappropriate phase during the disconnection process, i.e., an electric arc exists between the ports. This will cause the insulating gas to decompose. Since the intensity of the electric arc light is usually very high during the arcing process, an arc light sensor is usually used to monitor the intensity of the electric arc light during the arcing process to determine the time period of arcing in the switchgear. When the intensity of the electric arc light exceeds the set value (usually 2000 times the intensity of normal lighting light), it is determined that an arcing phenomenon has occurred.

[0022] Furthermore, both the arc light sensor and the humidity monitoring device are installed in the switch cabinet.

[0023] It should be noted that the ambient humidity range is divided into equal intervals using a preset interval. In one possible embodiment, the interval is 5%.

[0024] It is understood that the ambient humidity is determined based on the humidity monitoring device in the switch room.

[0025] Furthermore, the consistency of the monitoring data is determined based on the similarity between the monitoring data of the humidity monitoring device in the switch cabinet and the monitoring data of the humidity monitoring device in the switch room.

[0026] Specifically, such as Figure 2 As shown, the method for determining the sealing risk monitoring target among the monitoring targets is as follows: Based on the matching of monitoring data in each ambient humidity range, the time period in which the monitoring data of the switch cabinet humidity monitoring device falls within the corresponding ambient humidity range is determined and taken as the overlapping time period. Based on the overlapping time period, determine whether the monitoring target is a sealing risk monitoring target.

[0027] It is understood that the overlapping period is the period in which the monitoring data of the monitoring target within the environmental humidity range falls within the environmental humidity range at different times, and the duration meets the requirements. Specifically, it is a period of time with a duration of more than 1 hour.

[0028] It should be noted that when there are no overlapping periods in any of the environmental humidity ranges within the most recent preset time period, it indicates that the monitoring target and the environmental humidity data are inconsistent. Therefore, the monitoring target is determined not to be a sealing risk monitoring target. When there are environmental humidity ranges with consistent monitoring data, if the number of environmental humidity ranges with overlapping periods within the most recent preset time period does not meet the requirements, that is, if the number of environmental humidity ranges with overlapping periods is large, it indicates that the monitoring data of the humidity monitoring device of the switch cabinet in many environmental humidity ranges is close to the monitoring data of the humidity monitoring device in the switch room. Therefore, it is determined that the sealing of the monitoring target is abnormal and an early warning signal needs to be issued directly.

[0029] Furthermore, if the number of environmental humidity ranges with overlapping periods within the most recent preset time period meets the requirements, then these ranges are used as targets for sealing risk monitoring.

[0030] Specifically, the method for determining the verification and processing method of the humidity monitoring data in the switch room is as follows: Based on the monitoring data of the arc light sensor of each sealing risk monitoring target, the time period during which the arc light sensor of the sealing risk monitoring target detected arcing is determined and taken as the arcing time period; Based on the monitoring data during the arcing period, the arcing period data for different sealing risk monitoring targets are determined; Based on the arcing period data of different sealing risk monitoring targets, determine the total number of arcing periods of sealing risk monitoring targets on different dates within the most recent preset time period; Based on the total number of arcing periods of the sealing risk monitoring targets on different dates, the verification and processing method of the humidity monitoring data in the switch room is determined.

[0031] Understandably, when the total number of arcing periods for the sealing risk monitoring target does not meet the required date, the first preset method is used to verify the humidity monitoring device in the switch room; when there is no date where the total number of arcing periods for the sealing risk monitoring target does not meet the required date, if arcing periods exist on different dates within the most recent preset time period, the first preset method is used to verify the humidity monitoring device in the switch room; if arcing periods do not exist on different dates within the most recent preset time period, the second preset method is used to verify the humidity monitoring device in the switch room.

[0032] In one possible specific embodiment, if there are no overlapping periods in any of the environmental humidity ranges within the most recent week, it indicates that the monitoring target is inconsistent with the environmental humidity data, and therefore the monitoring target is determined not to be a sealing risk monitoring target. If there are no less than 3 environmental humidity ranges with overlapping periods within the most recent week, it is determined that the sealing of the monitoring target is abnormal and an early warning signal needs to be issued directly. If the number of environmental humidity ranges with overlapping periods within the most recent preset period meets the requirements, then it is regarded as a sealing risk monitoring target.

[0033] S2 determines the monitoring data of the humidity monitoring device of the sealing risk monitoring target and the consistency of the changes with the humidity monitoring data in the switch room. Based on the consistency of the changes after the arcing period, it determines the target whose sealing status is suspected to have changed. Specifically, such as Figure 4 As shown, the method for determining targets whose sealing status is suspected to have changed during the sealing risk monitoring is as follows: Based on the monitoring data of the humidity monitoring device of the sealing risk monitoring target and the consistency of the humidity monitoring data in the switch room, the time period that is consistent with the change of the humidity monitoring data in the switch room is determined and taken as the consistent time period. Based on the consistency of changes after the arcing period, determine the change data for the period of consistent changes after the arcing period; Based on the change data during the consistent change period after the arcing period, it is determined whether the sealing risk monitoring target is a target whose sealing status is suspected to have changed.

[0034] It should be noted that the arcing period refers to the period during which the arc sensor of the sealing risk monitoring target detects arcing.

[0035] It is understandable that, based on the change data during the consistent change period after the arcing period, it is determined whether the sealing risk monitoring target is a target whose sealing status is suspected to have changed, specifically including: The time period between the arcing period and the next arcing period is taken as the evaluation period of the arcing period; By comparing the consistent variation period data in the evaluation period of the arcing period with the consistent variation period data of the previous arcing period, the arcing period added to the consistent variation period is determined; Based on the number of arcing periods added during the period of consistent change, it is determined whether the sealing risk monitoring target is a target whose sealing status is suspected to have changed.

[0036] It is understood that the arcing period added to the consistent change period is an arcing period in which the total duration of the consistent change period within a unit of time in the evaluation period of the arcing period is longer than the total duration of the consistent change period within a unit of time in the evaluation period of the previous arcing period.

[0037] Specifically, if the number of arcing periods added during the consistent change period of the sealing risk monitoring target in the monitoring and processing process, or the total duration of the consistent change period in the most recent unit time, fails to meet the requirements, then the sealing risk monitoring target is determined to be a target whose sealing status is suspected to have changed.

[0038] In one possible specific embodiment: For example, the period of consistent change is a period in which the deviation between the humidity monitoring data of the humidity monitoring device of the sealing risk monitoring target and the humidity monitoring data of the switch room at different times is less than 2%. If the total duration of the consistent change period in the 24-hour evaluation period of the arcing period is 1 hour, and if the total duration of the consistent change period in the 24-hour evaluation period of the previous arcing period is 0.5 hours, then the arcing period is determined to be an arcing period added to the consistent change period. If the evaluation period corresponding to the arcing period is less than 24 hours, then the total duration of the consistent change period in the unit time is determined by the product of the total duration of the consistent change period and the ratio of the unit time to the evaluation period. When the number of arcing periods added to the consistent change period of the sealing risk monitoring target in the most recent three days is more than 2, or the total duration of the consistent change period in the most recent unit time is greater than 1 hour, then the sealing risk monitoring target is determined to be a target whose sealing status is suspected to have changed.

[0039] Based on the monitoring data of the arc light sensor in each target where the sealing status is suspected to have changed, and the verification processing method, S3 determines which switch cabinets need to issue a warning signal when a secondary verification process is required, based on the verification results of the humidity monitoring data in the switch room and the monitoring data of the arc light sensor.

[0040] Furthermore, it was determined that a second verification process was required, specifically including: Based on the monitoring data of the arc sensor in each target where the sealing state is suspected to have changed, the number of arcing periods in the most recent preset time period is determined; Based on the verification and processing methods of humidity monitoring data in the switch room and the number of arcing periods in each target whose sealing status is suspected to have changed, it is determined whether a secondary verification process is required.

[0041] Understandably, the verification and processing methods for humidity monitoring data within the switch room, along with the number of arcing periods among targets suspected of having changed sealing conditions, determine whether a secondary verification process is necessary. This includes: Based on the verification and processing methods of humidity monitoring data in the switch room, the threshold number of arcing periods is determined. Based on target data indicating a suspected change in sealing status where the number of arcing periods within the most recent preset time period exceeds a threshold for the number of arcing periods, determine whether a secondary verification process is required.

[0042] It should be noted that the threshold number of the arcing period is determined based on the verification and processing method of the humidity monitoring data in the switch room. The higher the reliability of the verification and processing method, the higher the credibility of the target whose sealing state is suspected to have changed. In order to ensure the reliability of operation, the threshold number is smaller.

[0043] For example, if the number of targets whose sealing status is suspected to have changed is not less than the target number threshold, and the number of arcing periods of the targets whose sealing status is suspected to have changed is large, the risk of corrosion due to excessive humidity is high. Therefore, it is determined that a secondary verification process of the humidity monitoring device in the switch room is required to determine whether there is any abnormality in the humidity monitoring device in the switch room.

[0044] It should be noted that when performing secondary verification, the humidity monitoring data is verified based on a preset time threshold and the humidity monitoring data of all switch cabinets that do not need to be sealed in the switch room is consistent with the humidity monitoring data of the switch room. The humidity monitoring data is verified in a second preset method within the preset time threshold. It should be noted that the second preset method is to verify the humidity monitoring data in a second preset cycle, that is, the humidity monitoring data is verified every minute.

[0045] Specifically, the method for determining the switchgear that needs to issue an early warning signal is as follows: Based on the verification results of humidity monitoring data in the switch room, the consistency between the humidity monitoring data in the switch room and the humidity monitoring data of switch cabinets that do not need to be sealed is determined at different times. Based on the consistency situation, determine the number of times when the humidity monitoring data of the switch cabinet that does not need to be sealed is inconsistent with that of the switch room, and determine the switch cabinets with inconsistent monitoring data in the switch cabinets that do not need to be sealed. Based on the monitoring data of the arc sensor of the target whose sealing status is suspected to have changed, and the switch cabinet data with inconsistent monitoring data, the switch cabinets that need to issue an early warning signal are identified.

[0046] It should be noted that the monitoring data inconsistency switch cabinet refers to a switch cabinet that does not need to be sealed and whose number of times the humidity monitoring data inconsistent with the humidity monitoring data in the switch room is greater than a preset threshold. Since the number of times the data inconsistent with the humidity monitoring data in the switch room is relatively large, it is used as a monitoring data inconsistency switch.

[0047] Understandably, when the number of switchgear cabinets with inconsistent monitoring data is small, it indicates that the humidity monitoring data in the switch room is highly reliable. All targets whose sealing status is suspected to have changed are considered switchgear cabinets that need to issue early warning signals.

[0048] Additionally, it should be noted that when the number of switchgear cabinets with inconsistent monitoring data is not small, it indicates that the reliability of the humidity monitoring data in the switch room is not high. Based on the monitoring data of the arc sensor of the target whose sealing status is suspected to have changed, it is determined whether it is a switchgear cabinet that needs to issue an early warning signal. The target whose sealing status is suspected to have changed is determined as the switchgear cabinet that needs to issue an early warning signal, while other targets whose sealing status is suspected to have changed do not need to be designated as switchgear cabinets that need to issue an early warning signal.

[0049] In one possible specific embodiment, When the verification processing method is the first preset method, the threshold number of arcing periods is determined to be 4. When the verification processing method is the second preset method, the threshold number of arcing periods is determined to be 5. The most recent preset duration is the most recent two weeks. When the number of targets whose sealing status is suspected to have changed does not meet the requirements within the most recent preset duration, and the number of arcing periods of the targets whose sealing status is suspected to have changed is large, the risk of corrosion due to excessive humidity is high. Therefore, based on this, it is determined that a secondary verification process of the humidity monitoring device in the switch room is required to determine whether there is any abnormality in the humidity monitoring device in the switch room.

[0050] When performing secondary verification, the humidity monitoring data is verified based on a preset time threshold and the consistency between the humidity monitoring data of all switch cabinets that do not need to be sealed in the switch room and the humidity monitoring data of the switch room. Within the preset time threshold, the humidity monitoring data is verified using a second preset method. In one possible embodiment, the preset time threshold is 24 hours. It should be noted that the second preset method is to perform humidity monitoring data verification at a second preset cycle, that is, to perform humidity monitoring data verification every minute.

[0051] Switchgear with more than 50 inconsistent moments that does not require sealing is considered as switchgear with inconsistent monitoring data. When the number of switchgear with inconsistent monitoring data is less than 3, it indicates that the reliability of the humidity monitoring data in the switch room is relatively high. All targets whose sealing status is suspected to have changed are considered switchgear that require an early warning signal. Alternatively, if the number of arcing periods in the arcing period of a target whose sealing status is suspected to have changed is more than 7 within the most recent preset time period, then the target whose sealing status is suspected to have changed is determined to be a switchgear that requires an early warning signal. Other targets whose sealing status is suspected to have changed do not need to be considered switchgear that requires an early warning signal.

[0052] Example 2 Secondly, such as Figure 5 As shown, the present invention provides an early warning device, employing the above-mentioned method for monitoring and warning of equipment in a switch room, specifically including: Verification method determination module, target identification module, alarm processing module; The verification method determination module is responsible for determining the verification processing method for humidity monitoring data in the switch room; The target identification module is responsible for identifying targets whose sealing status is suspected to have changed during the sealing risk monitoring. The alarm processing module is responsible for determining which switch cabinets require an early warning signal.

[0053] Optionally, the method for determining the sealing risk monitoring target among the monitoring targets is as follows: Based on the matching of monitoring data in each ambient humidity range, the time period in which the monitoring data of the switch cabinet humidity monitoring device falls within the corresponding ambient humidity range is determined and taken as the overlapping time period. Whether the monitoring target is a sealing risk monitoring target is determined based on the total duration of the overlapping period; It is understandable that when the total duration of the overlapping period in the most recent preset period does not meet the requirements, it indicates that the monitoring data of the humidity monitoring device in the switch cabinet within the ambient humidity range is close to the monitoring data of the humidity monitoring device in the switch room. Therefore, it is determined that the sealing status of the monitoring target is abnormal and an early warning signal needs to be issued directly.

[0054] Furthermore, if the total duration of overlapping periods within the most recent preset time period meets the requirements, then it is considered a sealing risk monitoring target; if there are no overlapping periods within the most recent preset time period, then the sealing status of the monitoring target is determined to be normal, and it is determined not to be a sealing risk monitoring target.

[0055] Example 3 Specifically, such as Figure 3 As shown, the method for determining the verification and processing method of humidity monitoring data in the switch room is as follows: Based on the monitoring data of the arc light sensor of each sealing risk monitoring target, the time period during which the arc light sensor of the sealing risk monitoring target detected arcing is determined and taken as the arcing time period; Based on the monitoring data during the arcing period, the arcing period data for different sealing risk monitoring targets are determined; Based on the arcing period data of different sealing risk monitoring targets, the verification and processing method of humidity monitoring data in the switch room is determined.

[0056] It is understood that when the number of sealing risk monitoring targets is greater than the preset number of targets, in one possible embodiment, when the number of sealing risk monitoring targets is greater than 5, in order to ensure the reliability of the monitoring and processing of the sealing status of the sealing risk monitoring targets, the verification and processing method of the humidity monitoring data in the switch room is determined to be the verification and processing of the humidity monitoring device in the switch room according to the first preset method. Additionally, it should be noted that if the number of sealing risk monitoring targets is not greater than the preset target number, it is necessary to further determine whether there are sealing risk monitoring targets with arcing periods in the most recent preset time period and whether there are sealing risk monitoring targets with arcing periods whose number does not meet the requirements. It is understood that when there are sealing risk monitoring targets with arcing periods whose number does not meet the requirements in the most recent preset time period, for example, more than two, or when there are sealing risk monitoring targets with arcing periods whose number does not meet the requirements, for example, more than three, the arcing risk is relatively high. Therefore, in order to ensure the reliability of the environmental humidity monitoring data and thus improve the reliability of the sealing status of the sealing risk monitoring targets, the first preset method is used to verify the humidity monitoring device between the switches. Furthermore, it is understood that when the number of sealing risk monitoring targets with arcing periods within the most recent preset time period meets the requirements and there are no sealing risk monitoring targets with arcing periods that do not meet the requirements, the second preset method is used to verify the humidity monitoring device between the switches.

[0057] Specifically, the humidity monitoring device in the switch room is verified. The verification is determined based on the consistency between the humidity monitoring data of the switch cabinet that does not need to be sealed and the humidity monitoring data of the switch room. The switch cabinet that does not need to be sealed is the switch cabinet with an air insulation design.

[0058] It should be noted that the first preset method is to verify the humidity monitoring data by comparing the humidity monitoring data of all switch cabinets that do not need to be sealed in the switch room with the humidity monitoring data of the switch room according to a preset time period.

[0059] Additionally, it can be understood that the second preset method involves verifying the humidity monitoring data by comparing the humidity monitoring data of one-third of the switch cabinets that do not need to be sealed or a preset number of switch cabinets with the humidity monitoring data of the switch room, according to a preset time period.

[0060] It should be noted that the preset number of switch cabinets is 3.

[0061] Specifically, the one-third of the switch cabinets that do not need to be sealed are determined by random sampling, and the humidity monitoring data is verified according to a preset time period, which specifically includes: Using a 1-hour cycle, determine the consistency between the humidity monitoring data of switch cabinets that do not need to be sealed in the switch room and the humidity monitoring data of the switch room. If the number of switch cabinets that do not need to be sealed and whose humidity monitoring data does not match the humidity monitoring data of the switch room meets the requirements, then it is determined that the humidity monitoring device in the switch room is not abnormal.

[0062] In one possible embodiment, when the number of switch cabinets that do not need to be sealed is not less than 3, i.e., the absolute value of the deviation between the humidity monitoring data and the humidity monitoring data between the switches is not greater than 2%, it is determined that the humidity monitoring device between the switches is abnormal.

[0063] Example 4 Specifically, the method for determining the switchgear that needs to issue an early warning signal is as follows: Based on the verification results of humidity monitoring data in the switch room, the consistency between the humidity monitoring data in the switch room and the humidity monitoring data of switch cabinets that do not need to be sealed is determined at different times. Based on the consistency, the time when there are switch cabinets that do not need to be sealed and whose humidity monitoring data is inconsistent with the humidity monitoring data in the switch room is determined, and this time is taken as the matching deviation time. Based on the matching deviation time data of the switchgear that does not need to be in a sealed state, the number of matching deviation times of the switchgear that does not need to be in a sealed state is determined, and the suspected abnormal switchgear in the switchgear is determined based on the number of matching deviation times. Based on the monitoring data of the arc sensor of the target whose sealing status is suspected to have changed, and the data of the suspected abnormal switchgear where the humidity monitoring data is inconsistent at the time of matching deviation, the switchgear that needs to issue an early warning signal is determined.

[0064] For example, the matching deviation time is the time when there is a switch cabinet that does not need to be sealed because the deviation between the humidity monitoring data and the humidity monitoring data in the switch room is greater than 2%. That is, at the time there is a switch cabinet that does not need to be sealed because the deviation between the humidity monitoring data and the humidity monitoring data in the switch room is greater than 2%.

[0065] It should be noted that the suspected abnormal switchgear refers to switchgear whose number of times the humidity monitoring data in the switch room is inconsistent with the data does not meet the requirements. In other words, the number of times the corresponding matching deviation of the switchgear is inconsistent with the data does not meet the requirements. For example, switchgear whose proportion of the number of times the humidity monitoring data in the switch room is inconsistent with the data in the switch room within a preset time threshold is greater than 0.7 is considered as suspected abnormal switchgear. Since the number of times the switchgear is inconsistent with the humidity monitoring data in the switch room is relatively large, the switchgear may be considered as suspected abnormal switchgear. The comparison time is the time when the humidity monitoring data in the switch room is verified within the preset time threshold.

[0066] It is understandable that if there are no matching deviation moments or the number of matching deviation moments is small in the above steps, it indicates that the humidity monitoring data in the switch room is highly reliable. Therefore, based on this, all targets whose sealing status is suspected to have changed are considered to have a high risk of sealing status changes, and thus all targets whose sealing status is suspected to have changed are considered to be switch cabinets that require an early warning signal.

[0067] In one possible embodiment, if the proportion of the number of matching deviation moments within the preset time threshold is less than 0.03, that is, if the proportion of the number of matching deviation moments in the secondary verification process is less than 0.03, it can be determined that the number of matching deviation moments is small.

[0068] In another possible embodiment, if the number of matching deviation moments is not small, and if the proportion of matching deviation moments in the secondary verification process is not less than 0.03, then it is determined that there are no suspected abnormal switchgear and the number of suspected abnormal switchgear meets the requirements, that is, the proportion of suspected abnormal switchgear among all switchgear that does not need to be in a sealed state is less than 10%. If the number of matching deviation moments that are only due to inconsistency with the humidity monitoring area of ​​suspected abnormal switchgear meets the requirements of the proportion of all matching deviation moments, that is, less than 0.7, then the possibility that the number of matching deviation moments caused by suspected abnormal switchgear is too large is not high. Therefore, based on this, it is determined that the reliability of the humidity monitoring data in the switch room is not good. Therefore, all targets whose sealing state is suspected to have changed are not considered as switchgear that need to issue a warning signal.

[0069] Additionally, it is understandable that if it is determined that there are no suspected abnormal switchgear cabinets or the number of suspected abnormal switchgear cabinets meets the requirements, it is still necessary to further determine whether the proportion of matching deviation moments due to inconsistency between the humidity monitoring area and the suspected abnormal switchgear cabinets is insufficient among all matching deviation moments. In this case, it is highly likely that the number of matching deviation moments caused by suspected abnormal switchgear cabinets is excessive. Therefore, based on this, according to the monitoring data of the arc sensor of the target whose sealing state is suspected to have changed, it is determined whether it is a switchgear cabinet that needs to issue a warning signal. Specifically, if the number of arcing periods in which the sealing state is suspected to have changed is greater than 7 within the most recent preset time period, then the target whose sealing state is suspected to have changed is determined as a switchgear cabinet that needs to issue a warning signal. Other targets whose sealing state is suspected to have changed do not need to be considered as switchgear cabinets that need to issue a warning signal.

[0070] Furthermore, if the proportion of matching deviation moments during the secondary verification process is greater than 0.03, and if the number of suspected abnormal switchgear is insufficient, it indicates that the reliability of the humidity monitoring data in the switch room is low. Therefore, based on this, according to the monitoring data of the arc sensor of the target whose sealing status is suspected to have changed, it is determined whether it is a switchgear that needs to issue an early warning signal. If the number of arcing periods in which the sealing status is suspected to have changed is greater than 7 within the most recent preset time period, then the target whose sealing status is suspected to have changed is determined as a switchgear that needs to issue an early warning signal. Other targets whose sealing status is suspected to have changed do not need to be considered as switchgears that need to issue an early warning signal.

[0071] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the embodiments of apparatus, devices, and non-volatile computer storage media are basically similar to the method embodiments, so the descriptions are relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0072] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0073] The above description is merely one or more embodiments of this specification and is not intended to limit this specification. Various modifications and variations can be made to the one or more embodiments of this specification by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of one or more embodiments of this specification should be included within the scope of the claims of this specification.

Claims

1. A method for monitoring and early warning of equipment in a switch room, characterized in that, Specifically, it includes: The switch cabinets equipped with arc light sensors in the switch room are taken as monitoring targets. Based on the monitoring data of the humidity monitoring device of the monitoring targets, the matching situation of the monitoring data in each environmental humidity range is determined. Based on the matching situation, the sealing risk monitoring targets in the monitoring targets are determined. Based on the monitoring data of the arc light sensors of each sealing risk monitoring target, the verification and processing method of the humidity monitoring data in the switch room is determined. The monitoring data of the humidity monitoring device of the sealing risk monitoring target is determined to be consistent with the changes in humidity monitoring data in the switch room. Based on the consistency of changes after the arcing period, the target whose sealing status is suspected to have changed is determined. Based on the monitoring data of the arc light sensor in each target where the sealing status is suspected to have changed, and the verification process, when it is determined that a secondary verification process is required, the switch cabinet that needs to issue an early warning signal is determined based on the verification results of the humidity monitoring data in the switch room and the monitoring data of the arc light sensor.

2. The method for monitoring and early warning of equipment in a switch room as described in claim 1, characterized in that, The arc sensor is used to detect arcing during the operation of the switchgear.

3. The method for monitoring and early warning of equipment in a switch room as described in claim 1, characterized in that, The ambient humidity range is divided into equal intervals using a preset interval.

4. The method for monitoring and early warning of equipment in a switch room as described in claim 1, characterized in that, The consistency of the monitoring data is determined based on the similarity between the monitoring data from the humidity monitoring device in the switch cabinet and the monitoring data from the humidity monitoring device in the switch room.

5. The method for monitoring and early warning of equipment in a switch room as described in claim 1, characterized in that, The method for determining the sealing risk monitoring target among the monitoring targets is as follows: Based on the matching of monitoring data in each ambient humidity range, the time period in which the monitoring data of the switch cabinet humidity monitoring device falls within the corresponding ambient humidity range is determined and taken as the overlapping time period. Based on the overlapping time period, determine whether the monitoring target is a sealing risk monitoring target.

6. The method for monitoring and early warning of equipment in a switch room as described in claim 5, characterized in that, The overlapping period is the time period in which the monitoring data of the monitoring target within the environmental humidity range falls within the environmental humidity range at different times, and the duration meets the requirements.

7. The method for monitoring and early warning of equipment in a switch room as described in claim 1, characterized in that, The method for determining the verification and processing method of the humidity monitoring data in the switch room is as follows: Based on the monitoring data of the arc light sensor of each sealing risk monitoring target, the time period during which the arc light sensor of the sealing risk monitoring target detected arcing is determined and taken as the arcing time period; Based on the monitoring data during the arcing period, the arcing period data for different sealing risk monitoring targets are determined; Based on the arcing period data of different sealing risk monitoring targets, the verification and processing method of humidity monitoring data in the switch room is determined.

8. The method for monitoring and early warning of equipment in a switch room as described in claim 1, characterized in that, The method for determining the switchgear that needs to issue an early warning signal is as follows: Based on the verification results of humidity monitoring data in the switch room, the consistency between the humidity monitoring data in the switch room and the humidity monitoring data of switch cabinets that do not need to be sealed is determined at different times. Based on the consistency, the time when there are switch cabinets that do not need to be sealed and whose humidity monitoring data is inconsistent with the humidity monitoring data in the switch room is determined, and this time is taken as the matching deviation time. Based on the matching deviation time data of the switchgear that does not need to be in a sealed state, the number of matching deviation times of the switchgear that does not need to be in a sealed state is determined, and the suspected abnormal switchgear in the switchgear is determined based on the number of matching deviation times. Based on the monitoring data of the arc sensor of the target whose sealing status is suspected to have changed, and the data of the suspected abnormal switchgear where the humidity monitoring data is inconsistent at the time of matching deviation, the switchgear that needs to issue an early warning signal is determined.

9. The method for monitoring and early warning of equipment in a switch room as described in claim 8, characterized in that, If there is no mismatch moment, then all targets whose sealing status is suspected to have changed are considered switchgear that requires an early warning signal.

10. An early warning device, employing the equipment monitoring and early warning method in a switch room as described in any one of claims 1-9, characterized in that, Specifically, it includes: Verification method determination module, target identification module, alarm processing module; The verification method determination module is responsible for determining the verification processing method for humidity monitoring data in the switch room; The target identification module is responsible for identifying targets whose sealing status is suspected to have changed during the sealing risk monitoring. The alarm processing module is responsible for determining which switch cabinets require an early warning signal.

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