Power transmission line tower grounding impedance monitoring method and system

Abstract

The invention provides a power transmission line tower grounding impedance monitoring method and system, and belongs to the technical field of impedance monitoring, and the method specifically comprises the steps: determining the change condition of the grounding impedance of a monitoring target based on the monitoring data of the grounding impedance of the monitoring target, and determining a degraded grounding device in the monitoring target based on the change condition, based on the distribution data of the degraded grounding device in the power transmission line and the monitoring deviation condition under each soil humidity, the power transmission line tower needing to be optimized by the grounding impedance monitoring processing method in the power transmission line is determined, and the efficiency and accuracy of monitoring analysis processing of the degradation risk are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of impedance monitoring, and particularly relates to a method and system for monitoring grounding impedance of a power transmission line tower. BACKGROUND

[0002] In order to realize monitoring and processing of the grounding impedance of the power transmission line tower and ensure the safety of the power transmission line, in the invention patent application CN202210267276.0 "A device and method for online monitoring of grounding resistance of a power transmission line tower", a direct-current voltage generated by a photovoltaic panel is converted into an off-frequency alternating-current voltage and then transmitted to an excitation coil, so that a voltage signal is generated in a grounding loop of a lightning rod and a measured tower, a current signal generated in the grounding loop is acquired by a measuring coil, and the equivalent grounding impedance of the measured tower is calculated based on the voltage value and the current value. However, the above technical solution has the following technical defects: In the monitoring and analysis process of the grounding impedance of the power transmission line tower, the aging analysis of the grounding device is ignored in the prior art, specifically, with the increase of the operation time, the grounding device will inevitably age, therefore, if the aging condition is ignored, the reliability of the monitoring and analysis result of the impedance cannot meet the requirements.

[0003] To solve the above technical problems, the application provides a method and system for monitoring grounding impedance of a power transmission line tower. SUMMARY

[0004] To achieve the purpose of the application, the application adopts the following technical solutions: Specifically, the application provides a method for monitoring grounding impedance of a power transmission line tower, which specifically comprises: S1 determining the soil resistivity of the grounding device of the power transmission line tower, determining the monitoring target for real-time monitoring and processing of the grounding impedance based on the abnormal condition of the soil resistivity under each soil humidity, and determining the monitoring and processing method of the grounding impedance of the power transmission line tower in the power transmission line based on the correlation of the abnormal condition of the soil resistivity of the monitoring target under the soil humidity; S2 determining the variation of the grounding impedance of the monitoring target based on the monitoring data of the grounding impedance of the monitoring target, determining the degraded grounding device in the monitoring target based on the variation, and determining the power transmission line tower in the power transmission line that needs to be subjected to the optimization processing of the monitoring and processing method of the grounding impedance based on the distribution data of the degraded grounding device in the power transmission line and the monitoring deviation condition under each soil humidity.

[0005] The application has the following advantages: The deteriorated grounding device in the monitoring target is determined based on the variation of the grounding impedance of the monitoring target, so that the screening of the deteriorated grounding device with a large amplitude of the grounding impedance variation is realized based on the variation of the grounding impedance, and a foundation is laid for further determining the monitoring processing method of the grounding impedance of the transmission line tower other than the monitoring target according to the deterioration state of the grounding device of the transmission line.

[0006] Based on the distribution data of the deteriorated grounding device in the transmission line and the monitoring deviation under each soil humidity, the transmission line tower in the transmission line which needs to be subjected to the optimization processing of the monitoring processing method of the grounding impedance is determined, which not only considers the difference in the demand for the grounding reliability of the transmission line tower when a lightning stroke occurs in the adjacent transmission line of the transmission line tower due to the influence of the distribution data of the deteriorated grounding device, but also further combines the monitoring deviation under each soil humidity in the current monitoring processing method to realize the screening of the transmission line tower with a lower completeness degree of the monitoring processing, and further realize the determination of the transmission line tower in the transmission line which needs to be subjected to the optimization processing of the monitoring processing method of the grounding impedance from the perspective of the reliability of the monitoring processing and the demand for the grounding reliability, so as to ensure the reliability and timeliness of the monitoring analysis processing when the transmission line tower deteriorates.

[0007] Further, the soil resistivity is determined according to the detection results of the soil resistivity at different soil humidities at the position of the grounding device of the transmission line tower.

[0008] It should be noted that the soil humidity is determined according to the relative humidity, and specifically, the soil humidity is divided into multiple soil humidity intervals with an interval of 10%, and the largest soil humidity interval is 100% to 100% or more.

[0009] Further, the determination method of the monitoring target is: The soil humidity interval in which the soil resistivity at the position of the grounding device of the transmission line tower is abnormal is determined based on the abnormality of the soil resistivity under each soil humidity. Whether the grounding device of the transmission line tower is a monitoring target is determined by using the soil humidity interval in which the soil resistivity is abnormal.

[0010] Further, the determination method of the transmission line tower in the transmission line which needs to be subjected to the optimization processing of the monitoring processing method of the grounding impedance is: The number of deteriorated grounding devices in the transmission line is determined based on the distribution data of the deteriorated grounding device in the transmission line. According to the distribution data of the deteriorated grounding device, constituent data of the deteriorated grounding device within a target distance interval of the power transmission line tower is determined; Based on the monitoring deviation of the power transmission line tower under each soil humidity, monitoring data of the grounding impedance under the each soil humidity is determined, and in combination with the number of the deteriorated grounding device and the constituent data of the deteriorated grounding device within the target distance interval, it is determined whether the power transmission line tower is a power transmission line tower that needs to be subjected to the optimization processing of the monitoring processing method of the grounding impedance.

[0011] In a second aspect, the present application provides a computer system, comprising a memory and a processor connected in communication, and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the computer program to perform the power transmission line tower grounding impedance monitoring method.

[0012] Other features and advantages will be set forth in the descriptions that follow, and in part will be apparent from the description, or can be learned by practice of the application. The purposes and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims.

[0013] In order to make the above objectives, features and advantages of the present application more apparent, the following will describe a preferred embodiment in detail, and the accompanying drawings will be described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0014] The above and other features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:

[0015] Figure 1 is a flowchart of a power transmission line tower grounding impedance monitoring method; Figure 2 is a flowchart of a method for determining a monitoring target; Figure 3 is a flowchart of a method for determining a monitoring processing method of a grounding impedance of a power transmission line tower in a power transmission line. DETAILED DESCRIPTION

[0016] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided as example embodiments so that this disclosure will be thorough and complete, and will fully convey the scope thereof to those skilled in the art. Like reference numerals refer to like elements throughout the several views of the drawings, and primed or unprimed reference numerals refer to elements of the same or similar function, so detailed descriptions thereof will be omitted.

[0017] The terms "one", "a", "an", "the", and "said" are used to denote the presence of one or more elements / supplements / etc.; the terms "include" and "have" are used to mean open-ended inclusion and refer to additional elements / supplements / etc. in addition to the listed elements / supplements / etc.

[0018] Embodiment 1 To solve the above problems, according to one aspect of the present application, as shown in Figure 1 A transmission line tower grounding impedance monitoring method is provided, which specifically comprises: S1 determines the soil resistivity of the grounding device of the transmission line tower, determines the monitoring target for real-time monitoring processing of the grounding impedance based on the abnormal situation of the soil resistivity under each soil humidity, and determines the monitoring processing method of the grounding impedance of the transmission line tower in the transmission line based on the correlation of the abnormal situation of the soil resistivity of the monitoring target under the soil humidity. Further, the soil resistivity is determined according to the detection results of the soil resistivity of the position where the grounding device of the transmission line tower is located under different soil humidities.

[0019] It should be noted that the soil humidity is determined according to the relative humidity, specifically, the soil humidity is divided into multiple soil humidity intervals with 10% as the unit interval, and the maximum soil humidity interval is 100% to 100% or more.

[0020] Specifically, as shown in Figure 2 The method for determining the monitoring target is: determining the soil humidity interval where the soil resistivity of the position where the grounding device of the transmission line tower is located is abnormal based on the abnormal situation of the soil resistivity under each soil humidity; determining whether the grounding device of the transmission line tower is the monitoring target by using the soil humidity interval where the soil resistivity is abnormal.

[0021] It should be noted that the soil humidity interval where the soil resistivity is abnormal is the soil humidity interval where the soil resistivity is greater than 1500Ω / m.

[0022] It can be understood that when the maximum value of the end point corresponding to the abnormal soil humidity interval of the soil resistivity of the position where the grounding device of the power transmission line tower is located does not meet the requirement, the grounding device of the power transmission line tower is determined as the monitoring target. When the relative humidity corresponding to the maximum value of the end point corresponding to the abnormal soil humidity interval of the soil resistivity of the position where the grounding device of the power transmission line tower is located is greater than 70%, the soil resistivity of the position where the grounding device of the power transmission line tower is located is higher at this time, and therefore, in order to ensure the reliability of the grounding monitoring, the grounding device of the power transmission line tower is taken as the monitoring target.

[0023] Optionally, the method for determining the monitoring target is: determining the abnormal soil humidity interval of the soil resistivity of the position where the grounding device of the power transmission line tower is located based on the abnormal condition of the soil resistivity under each soil humidity; determining the average value of the soil resistivity of the power transmission line tower in the target soil humidity interval based on the abnormal soil humidity interval of the soil resistivity, and determining whether the grounding device of the power transmission line tower is the monitoring target based on the average value.

[0024] It can be understood that the target soil humidity interval is the soil humidity interval with the maximum value of the end point being not greater than 70%, and if the average value of the soil resistivity of the target soil humidity interval is greater than a preset resistivity threshold, the grounding device of the power transmission line tower is determined as the monitoring target.

[0025] Specifically, as shown in Figure 3 The method for determining the monitoring processing method of the grounding impedance of the power transmission line tower in the power transmission line is: determining the number of monitoring targets in the power transmission line based on the monitoring target data in the power transmission line; taking the power transmission line tower in the power transmission line except the monitoring target as a monitoring tower, determining the number of monitoring targets of the monitoring tower in the target range based on the monitoring target data of the monitoring tower in the target range; determining the coincidence of the abnormal soil humidity interval of the soil resistivity of the monitoring target based on the correlation of the abnormal condition of the soil resistivity of the monitoring target under each soil humidity in the target range, determining the coincident monitoring target in each soil humidity interval based on the coincidence, and determining the monitoring processing method of the grounding impedance of the monitoring tower based on the number of monitoring targets in the power transmission line, the number of monitoring targets of the monitoring tower in the target range, and the coincident monitoring target in each soil humidity interval.

[0026] It should be noted that when the number of monitoring targets of the transmission line tower in the transmission line does not meet the requirement, in a possible embodiment, if the number of monitoring targets of the transmission line tower in the transmission line is less than 0.5, at this time, the monitoring reliability of the grounding impedance of the transmission line tower in the transmission line is not high, and therefore, on this basis, the monitoring of the grounding impedance of all the monitoring towers is performed in all soil humidity intervals according to a preset time period, and in a possible embodiment, the preset time period is 1 day.

[0027] In addition, it can be understood that the target range is determined according to the interval distance between the monitoring tower and the adjacent transmission line tower.

[0028] It should be noted that when the number of monitoring targets of the monitoring tower in the target range does not meet the requirement, in a possible embodiment, when the number of monitoring targets of the monitoring tower in the target range is not greater than 0.5, at this time, when the transmission line of the monitoring tower is struck by lightning, the monitoring reliability is not high, and therefore, on this basis, the monitoring of the grounding impedance of the monitoring tower is performed in all soil humidity intervals according to a preset time period, and in a possible embodiment, the preset time period is 1 day.

[0029] Specifically, the coincident monitoring target is a monitoring target in which the soil resistivity is abnormal in the soil humidity interval.

[0030] Further, when the number of monitoring targets of the monitoring tower in the target range meets the requirement, the coincident monitoring target in each soil humidity interval is obtained, when all the monitoring targets in the target range in the soil humidity interval belong to the coincident monitoring target, the monitoring of the grounding impedance of the monitoring tower is performed in the soil humidity interval according to a preset time period, when there is no coincident monitoring target among all the monitoring targets in the target range in the soil humidity interval, it is determined that the monitoring of the grounding impedance of the monitoring tower in the soil humidity interval is not required, and when there is a coincident monitoring target in the target range in the soil humidity interval and the coincident monitoring target is not uniform, the monitoring of the grounding impedance of the monitoring tower is performed in the soil humidity interval according to a second preset time period.

[0031] It can be understood that the preset time period is less than the second preset time period, and the value range of the second preset time period is 3 days.

[0032] Optionally, the determination method of the monitoring method of the grounding impedance of the transmission line tower in the transmission line is: The monitoring tower in the transmission line is determined as a monitoring tower in the transmission line except the monitoring target, the number of the monitoring targets in the target range of the monitoring tower is determined based on the monitoring target data of the monitoring tower in the target range, and the number of the monitoring targets in the target range of the monitoring tower is determined. The coincidence of the soil humidity intervals in which the soil resistivity of the monitoring target is abnormal is determined according to the correlation of the abnormal conditions of the soil resistivity of the monitoring target in the target range under the soil humidity, the soil humidity interval in which the soil resistivity of the monitoring target is abnormal is determined based on the coincidence, and the soil humidity interval is taken as an abnormal humidity interval. The monitoring processing method of the grounding impedance of the monitoring tower is determined by using the number of the monitoring targets in the target range of the monitoring tower and the monitoring target data of the monitoring target in which the soil resistivity is abnormal in each abnormal humidity interval.

[0033] Specifically, when the number of the monitoring targets in the target range of the monitoring tower does not meet the requirement, the monitoring tower is subjected to the monitoring processing of the grounding impedance in all the soil humidity intervals according to the preset time period on the basis that the monitoring reliability is not high when the transmission line of the monitoring tower is subjected to the lightning stroke event.

[0034] In addition, it is necessary to further determine the number of the abnormal humidity intervals when the number of the monitoring targets in the target range of the monitoring tower meets the requirement, and the monitoring tower is subjected to the monitoring processing of the grounding impedance in all the soil humidity intervals according to the preset time period on the basis that the number of the abnormal humidity intervals is greater than the preset interval number threshold.

[0035] Further, when the number of the abnormal humidity intervals is not greater than the preset interval number threshold, the monitoring tower is not subjected to the monitoring processing of the grounding impedance in the soil humidity interval which does not belong to the abnormal humidity interval, the monitoring tower is subjected to the monitoring processing of the grounding impedance in the abnormal humidity interval according to the preset time period on the basis that the number of the monitoring target in which the soil resistivity is abnormal in the abnormal humidity interval is greater than the preset target number threshold, and the monitoring tower is subjected to the monitoring processing of the grounding impedance in the abnormal humidity interval according to the second preset time period on the basis that the number of the monitoring target in which the soil resistivity is abnormal in the abnormal humidity interval is not greater than the preset target number threshold.

[0036] S2 determines the variation of the grounding impedance of the monitoring target based on the monitoring data of the grounding impedance of the monitoring target, determines the degraded grounding device in the monitoring target based on the variation, and determines the transmission line tower in which the monitoring processing method of the grounding impedance needs to be optimized based on the distribution data of the degraded grounding device in the transmission line and the monitoring deviation under each soil humidity.

[0037] Specifically, the method for determining the deteriorated grounding device in the monitoring target comprises: determining a variation of the grounding impedance of the monitoring target in each soil humidity interval based on the variation condition; determining a variation rate of the grounding impedance of the monitoring target in each soil humidity interval by using the variation; determining whether the monitoring target is a deteriorated grounding device based on the variation rate of the grounding impedance in each soil humidity interval.

[0038] It can be understood that the variation is determined according to a difference between the monitoring amount of the grounding impedance of the monitoring target in each soil humidity interval and a monitoring amount of the grounding impedance of the monitoring target in each soil humidity interval in a previous preset time period, and in a possible embodiment, the monitoring amount of the grounding impedance of the monitoring target in each soil humidity interval in the previous preset time period is an average of the monitoring amount of the grounding impedance of the monitoring target in each soil humidity interval in the previous month.

[0039] Specifically, the monitoring amount of the grounding impedance of the monitoring target in each soil humidity interval is an average of the monitoring amount of the grounding impedance of the monitoring target in each soil humidity interval in a current preset time period.

[0040] It should be noted that the variation rate is determined according to a ratio of the difference to the monitoring amount of the grounding impedance of the monitoring target in the soil humidity interval.

[0041] Specifically, determining whether the monitoring target is a deteriorated grounding device based on the variation rate of the grounding impedance in each soil humidity interval specifically comprises: determining a preset time period in which an average of the variation rate of the grounding impedance in each soil humidity interval in different preset time periods does not meet a requirement as a variation deviation period; determining whether the monitoring target is a deteriorated grounding device according to variation deviation period data in a preset time length.

[0042] It should be noted that the variation deviation period is a preset time period in which the average of the variation rate of the grounding impedance in each soil humidity interval is greater than 1%.

[0043] Specifically, when the number of variation deviation periods in the last year is more than 3, it is determined that the monitoring target is a deteriorated grounding device.

[0044] Further, the method for determining the transmission line tower in the transmission line which needs to be optimized by the monitoring method of the grounding impedance is: determining the number of the deteriorated grounding devices in the transmission line based on the distribution data of the deteriorated grounding devices in the transmission line; determining the composition data of the deteriorated grounding devices in the target distance interval of the transmission line tower according to the distribution data of the deteriorated grounding devices; determining the monitoring data of the grounding impedance under each soil humidity based on the monitoring deviation of the transmission line tower under each soil humidity, and determining whether the transmission line tower needs to be optimized by the monitoring method of the grounding impedance in combination with the number of the deteriorated grounding devices and the composition data of the deteriorated grounding devices in the target distance interval.

[0045] It can be understood that when the number of the deteriorated grounding devices in the transmission line does not meet the requirement, it can be understood that when the proportion of the number of the deteriorated grounding devices in the transmission line is greater than 0.3 or more, the grounding reliability of the transmission line tower in the transmission line is not high at this time, and therefore all the transmission line towers in the transmission line are determined as the transmission line towers which need to be optimized by the monitoring method of the grounding impedance, i.e., all are the monitoring targets, so as to determine the real grounding state of the transmission line tower in the transmission line.

[0046] Further, when the number of the deteriorated grounding devices in the transmission line meets the requirement, it is also necessary to determine whether there is a deteriorated grounding device in the target distance interval of the transmission line tower. In a possible embodiment, the target distance interval is the distance interval constituted by the grounding devices of the preset number of transmission line towers closest to the transmission line tower, i.e., the grounding devices of the four transmission line towers closest to the transmission line tower. When there is no deteriorated grounding device in the target distance interval of the transmission line tower, the grounding impedance is reliable due to the absence of deterioration risk in the target distance interval, and therefore the transmission line tower is determined not to belong to the transmission line tower which needs to be optimized by the monitoring method of the grounding impedance.

[0047] It can be understood that when the transmission line tower has a deteriorated grounding device in the target distance interval, the number of deteriorated grounding devices of the transmission line tower in the target distance interval is obtained, and when the number of deteriorated grounding devices of the transmission line tower in the target distance interval does not meet the requirement, that is, the number of deteriorated grounding devices of the transmission line tower in the target distance interval is not less than 2, it is determined that the transmission line tower belongs to the transmission line tower that needs to be subjected to the optimization processing of the monitoring processing method of the grounding impedance, and the grounding device of the transmission line tower is taken as a monitoring target, so that real-time monitoring processing is realized, and the efficiency and reliability of the deterioration analysis processing are ensured.

[0048] Specifically, when the number of deteriorated grounding devices of the transmission line tower in the target distance interval meets the requirement, based on the monitoring data of the access impedance of the transmission line in each soil humidity interval, the number of monitoring times of the access impedance of the transmission line in each soil humidity interval in the latest preset time period, that is, in the latest month, is determined, and when there is no soil humidity interval whose number of monitoring times does not meet the requirement, that is, the soil humidity interval whose number of monitoring times is less than 10, the reliability of the deterioration analysis is relatively high at this time, and therefore it is determined that the transmission line tower does not belong to the transmission line tower that needs to be subjected to the optimization processing of the monitoring processing method of the grounding impedance.

[0049] In addition, it should be noted that when there is a soil humidity interval whose number of monitoring times does not meet the requirement, the number of soil humidity intervals whose number of monitoring times does not meet the requirement in the latest preset time period is obtained, and when the number of soil humidity intervals whose number of monitoring times does not meet the requirement in the latest preset time period is greater than the preset humidity interval number threshold, that is, greater than 4 or more, the monitoring reliability is not high at this time, and therefore it is determined that the transmission line tower belongs to the transmission line tower that needs to be subjected to the optimization processing of the monitoring processing method of the grounding impedance, that is, the grounding device of the transmission line tower is taken as a monitoring target, so that real-time monitoring processing is realized, and the efficiency and reliability of the deterioration analysis processing are ensured.

[0050] Further, if the number of soil humidity intervals whose number of monitoring times does not meet the requirement in the latest preset time period is not greater than the preset humidity interval number threshold, it is also determined that the transmission line tower belongs to the transmission line tower that needs to be subjected to the optimization processing of the monitoring processing method of the grounding impedance at this time, and only the real-time monitoring processing is needed in the soil humidity interval whose number of monitoring times does not meet the requirement in the latest preset time period.

[0051] Optionally, the method for determining the transmission line tower that needs to be subjected to the optimization processing of the monitoring processing method of the grounding impedance in the transmission line is that: According to the distribution data of the deteriorated grounding device, the constituting data of the deteriorated grounding device in the target distance interval of the power transmission line tower is determined, and the number of the deteriorated grounding device in the target distance interval is determined based on the constituting data; Based on the monitoring deviation of the power transmission line tower under each soil humidity, the monitoring data of the grounding impedance under each soil humidity is determined, and the power transmission line tower whether needs to be optimized by the monitoring processing method of the grounding impedance is determined in combination with the number of the deteriorated grounding device in the target distance interval of the power transmission line tower.

[0052] Specifically, when there is no deteriorated grounding device in the target distance interval of the power transmission line tower, the reliability of the grounding impedance is higher due to the absence of deterioration risk in the target distance interval, and it is determined that the power transmission line tower does not belong to the power transmission line tower that needs to be optimized by the monitoring processing method of the grounding impedance.

[0053] It can be understood that when there is a deteriorated grounding device in the target distance interval of the power transmission line tower, the number of the deteriorated grounding device in the target distance interval of the power transmission line tower is obtained, and when the number of the deteriorated grounding device in the target distance interval of the power transmission line tower does not meet the requirement, i.e. the number of the deteriorated grounding device in the target distance interval of the power transmission line tower is not less than 2, it is determined that the power transmission line tower belongs to the power transmission line tower that needs to be optimized by the monitoring processing method of the grounding impedance, and the grounding device of the power transmission line tower is taken as a monitoring target, so as to realize real-time monitoring processing and ensure the efficiency and reliability of the deterioration analysis processing.

[0054] Specifically, when the number of the deteriorated grounding device in the target distance interval of the power transmission line tower meets the requirement, the monitoring times of the access impedance of the power transmission line under each soil humidity interval in the nearest preset time period, i.e. the monitoring times of the access impedance of the power transmission line under each soil humidity interval in the nearest month, is determined based on the monitoring data of the access impedance of the power transmission line under each soil humidity interval, and when there is no soil humidity interval whose monitoring times do not meet the requirement, i.e. the soil humidity interval whose monitoring times are less than 10 times, the reliability of the deterioration analysis is higher at this time, and it is determined that the power transmission line tower does not belong to the power transmission line tower that needs to be optimized by the monitoring processing method of the grounding impedance.

[0055] In addition, it is necessary to indicate that when there is a soil humidity interval whose monitoring frequency does not meet the requirement, the number of soil humidity intervals whose monitoring frequency does not meet the requirement in the latest preset time period is obtained, and when the number of soil humidity intervals whose monitoring frequency does not meet the requirement in the latest preset time period is greater than the preset humidity interval number threshold, that is, greater than 4, the monitoring reliability is not high at this time, and therefore it is determined that the power line tower belongs to the power line tower that needs to be subjected to the optimization processing of the monitoring processing method of the grounding impedance, that is, the grounding device of the power line tower is taken as a monitoring target, so that real-time monitoring processing is realized, and the efficiency and reliability of the degradation analysis processing are ensured.

[0056] Further, if the number of soil humidity intervals whose monitoring frequency does not meet the requirement in the latest preset time period is not greater than the preset humidity interval number threshold, it is also determined that the power line tower belongs to the power line tower that needs to be subjected to the optimization processing of the monitoring processing method of the grounding impedance at this time, and only real-time monitoring processing needs to be used in the soil humidity interval whose monitoring frequency does not meet the requirement in the latest preset time period.

[0057] Embodiment 2 In a second aspect, the present application provides a computer system, comprising a memory and a processor connected in communication, and a computer program stored on the memory and capable of running on the processor, and the processor executes the computer program to perform the power line tower grounding impedance monitoring method described above.

[0058] Each of the embodiments in the specification is described in a progressive manner, and the same and similar parts between the embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments. In particular, for the device, equipment, and non-volatile computer storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiment.

[0059] The above describes specific embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the acts or steps recited in the claims can be performed in a different order than the order described in the embodiments and still achieve the desired result. In addition, the processes depicted in the figures do not necessarily require the particular order shown or sequential order to achieve the desired results. In some implementations, multitasking and parallel processing can be advantageous or possible.

[0060] The above merely provides one or more embodiments of the present specification and is not intended to limit the present specification. One of ordinary skill in the art can make various modifications and changes to one or more embodiments of the present specification. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of the present specification should be included in the scope of claims of the present specification.

Claims

1. A method of monitoring the ground impedance of a power line tower, characterized in that, Specifically comprising: Determine the soil resistivity of the grounding device of the transmission line tower, determine the monitoring target of the real-time monitoring process of the grounding impedance based on the abnormal situation of the soil resistivity under each soil humidity, determine the monitoring process method of the grounding impedance of the transmission line tower in the transmission line based on the correlation of the abnormal situation of the soil resistivity of the monitoring target under the soil humidity; Determine the variation of the grounding impedance of the monitoring target based on the monitoring data of the grounding impedance of the monitoring target, determine the degraded grounding device in the monitoring target based on the variation, and determine the transmission line tower in the transmission line that needs to be subjected to the optimization processing of the monitoring process method of the grounding impedance based on the distribution data of the degraded grounding device in the transmission line and the monitoring deviation situation under each soil humidity.

2. The method of monitoring the grounding impedance of a transmission line tower according to claim 1, wherein, The soil resistivity is determined according to the detection results of the soil resistivity of the position where the grounding device of the transmission line tower is located under different soil humidities.

3. The method of monitoring the grounding impedance of a transmission line tower of claim 1, wherein, The method for determining the monitoring target is: Determine the soil humidity interval in which the soil resistivity of the position where the grounding device of the transmission line tower is located is abnormal based on the abnormal situation of the soil resistivity under each soil humidity; Determine whether the grounding device of the transmission line tower is a monitoring target by using the soil humidity interval in which the soil resistivity is abnormal.

4. The method of monitoring the grounding impedance of a transmission line tower of claim 3, wherein, When the maximum value of the end point corresponding to the soil humidity interval in which the soil resistivity of the position where the grounding device of the transmission line tower is located is abnormal does not meet the requirement, it is determined that the grounding device of the transmission line tower is a monitoring target.

5. The method of transmission line tower ground impedance monitoring of claim 1, wherein, The method for determining the monitoring process method of the grounding impedance of the transmission line tower in the transmission line is: Determine the number of monitoring targets in the transmission line based on the monitoring target data in the transmission line; Determine the number of monitoring targets in the target range of the monitoring tower based on the monitoring target data of the monitoring tower in the target range; Determine the coincidence of the soil humidity interval in which the soil resistivity of the monitoring target is abnormal based on the correlation of the abnormal situation of the soil resistivity of the monitoring target under the soil humidity in the target range, determine the coincident monitoring target in each soil humidity interval based on the coincidence, and determine the monitoring process method of the grounding impedance of the monitoring tower by using the number of monitoring targets in the transmission line, the number of monitoring targets of the monitoring tower in the target range, and the coincident monitoring target in each soil humidity interval.

6. The method of monitoring the grounding impedance of a transmission line tower of claim 5, wherein, The target range is determined according to the interval distance between the monitoring tower and the adjacent transmission line tower.

7. The method of monitoring the grounding impedance of a transmission line tower of claim 5, wherein, The coincident monitoring target is a monitoring target that belongs to the soil humidity interval in which the soil resistivity is abnormal in the soil humidity interval.

8. The method of transmission line tower ground impedance monitoring of claim 1, wherein, The method for determining the transmission line tower in the transmission line that needs to be subjected to the optimization processing of the monitoring process method of the grounding impedance is: Determine the number of degraded grounding devices in the transmission line based on the distribution data of the degraded grounding device in the transmission line; According to the distribution data of the deteriorated grounding device, constituent data of the deteriorated grounding device within a target distance interval of the power transmission line tower is determined; Based on the monitoring deviation of the power transmission line tower under each soil humidity, monitoring data of the grounding impedance under the soil humidity is determined, and in combination with the number of the deteriorated grounding device and the constituent data of the deteriorated grounding device within the target distance interval, it is determined whether the power transmission line tower is a power transmission line tower that needs to be optimized by the monitoring processing method of the grounding impedance.

9. The method of monitoring the grounding impedance of a transmission line tower of claim 8 wherein, When the number of the deteriorated grounding device in the power transmission line does not meet the requirement, all the power transmission line towers in the power transmission line are determined as the power transmission line towers that need to be optimized by the monitoring processing method of the grounding impedance, i.e., all are monitoring targets.

10. A computer system comprising: A memory and a processor connected in communication, and a computer program stored on the memory and capable of running on the processor, characterized in that the processor executes the computer program to perform the power transmission line tower grounding impedance monitoring method of any one of claims 1-9.

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