A device and method for monitoring the moisture of a zinc oxide surge arrester

Abstract

The application discloses a kind of zinc oxide arrester damp monitoring device and method, it is related to electric power equipment monitoring technical field;Device includes electronic scale, sliding contact connector, communication device and controller, electronic scale is connected with controller by communication device and communication, electronic scale is used to carry zinc oxide arrester, monitoring obtains the mass data of zinc oxide arrester and sends to controller, sliding contact connector is used to be electrically connected between the flange of zinc oxide arrester and wiring unit, controller is used to obtain the monitoring mass data of zinc oxide arrester, compare monitoring mass data with standard mass data, obtain mass variation, according to mass variation and standard threshold, obtain the damp state of zinc oxide arrester;Method includes the step of monitoring;Through sliding contact connector, the flange of zinc oxide arrester is electrically connected with wiring unit, and electronic scale can obtain the mass data of zinc oxide arrester, and then the damp state of zinc oxide arrester can be known in time.

Description

Technical Field

[0001] This invention relates to the field of power equipment monitoring technology, and in particular to a device and method for monitoring moisture in zinc oxide surge arresters. Background Technology

[0002] The author conducted a search using the formula (TACD = (surge arrester AND moisture AND (weight OR mass OR weighing))) and obtained the following closest existing technical solutions.

[0003] Application publication number CN115662716A, entitled "A Method for Manufacturing a Composite-Jacketed Gapless Drop-Out Arrester," describes a surge arrester comprising an arrester housing with a composite jacket fitted over its outer wall. A top cover is fixedly connected to the top of the composite jacket, and a threaded rod is fixedly connected to the top of the top cover. The threaded rod has threads on its outer wall, with a spring at the bottom of the threads. A metal base is fixedly connected to the bottom of the outer wall of the composite jacket, and another set of threaded rods is fixedly connected to the bottom of the metal base. A nut is fixedly connected to the bottom of the bottom threaded rods, and a connecting rod is fixedly connected to the bottom of the bottom threaded rods. A limit sleeve is fixedly connected to the bottom right end of the connecting rod. By employing a pure air gap structure, the power grid can operate stably, reducing power outages and extending the service life. Furthermore, the use of two sets of epoxy rods and zinc oxide resistance sheets makes the power supply more stable.

[0004] The application, published under CN115508653A, is titled "An Online Monitoring System for the Status of Transmission and Transformation Surge Arresters." This system comprises a cloud server, a lightning strike detection module, a lightning protection detection and early warning device, an Internet of Things (IoT) platform module, and a remote monitoring platform module. The output of the cloud server is telecommunicationly connected to the inputs of these modules. Through communication between the lightning strike detection device, the lightning protection detection and early warning device, and the remote monitoring platform module, real-time monitoring of data such as lightning strike current of power equipment surge arresters and the performance status of lightning protection equipment can be achieved. The system also performs statistical analysis on the waveform data, providing technical support for comprehensive analysis of line lightning protection and subsequent lightning protection measures. This improves the accuracy of electrical insulation assessment of power equipment surge arresters and enables the evaluation of lightning protection effectiveness for overhead power distribution lines.

[0005] Based on the two patent documents mentioned above and existing technical solutions, the inventors analyze the existing technical solutions as follows.

[0006] like Figure 4 The diagram shown illustrates a standard wiring configuration, using a single-section zinc oxide surge arrester as an example. The primary lead of the zinc oxide surge arrester is connected to the upper flange, and the base is connected to the lower flange. The base provides a fixed connection to the surge arrester and insulation from ground. One end of ammeter A2 is connected to the lower flange of the surge arrester, and the other end is grounded.

[0007] Leakage current testing and infrared thermometry can effectively detect moisture defects in zinc oxide surge arresters. However, infrared thermometers and online resistive current monitoring devices for surge arresters are expensive. There is an urgent need for a new, low-cost, and accurate method to determine moisture defects in zinc oxide surge arresters.

[0008] Existing technical issues and considerations:

[0009] How to solve the technical problem of detecting moisture in surge arresters. Summary of the Invention

[0010] This invention provides a device and method for monitoring the moisture status of zinc oxide surge arresters, solving the technical problem of lacking the basic ability to promptly detect the moisture status of surge arresters.

[0011] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0012] A device for monitoring the moisture absorption of a zinc oxide surge arrester includes an electronic scale, a sliding contact connector, a communication device, and a controller. The electronic scale is connected to and communicates with the communication device, and the controller is connected to and communicates with the communication device. The electronic scale is used to carry the zinc oxide surge arrester, monitor and obtain the quality data of the zinc oxide surge arrester, and send it to the controller. The sliding contact connector is used to electrically connect the flange and the wiring unit of the zinc oxide surge arrester. The controller is used to obtain the monitored quality data of the zinc oxide surge arrester, compare the monitored quality data with standard quality data to obtain the quality change, and obtain the moisture absorption status of the zinc oxide surge arrester based on the quality change and the standard threshold.

[0013] A further technical solution is that the sliding contact connector includes a flange-side connector and a wiring unit-side connector, the flange-side connector and the wiring unit-side connector are slidably connected, the flange-side connector is used for fixed connection with the flange of the zinc oxide surge arrester, and the wiring unit-side connector is used for fixed connection with the wiring unit.

[0014] A further technical solution includes a monitoring module, which is used by the electronic scale to obtain the quality data of the zinc oxide surge arrester and send it to the controller. The controller obtains the monitored quality data of the zinc oxide surge arrester sent by the electronic scale, compares the monitored quality data with the standard quality data, obtains the quality change, and obtains the moisture status of the zinc oxide surge arrester based on the quality change and the standard threshold, indicating whether the moisture status is yes or no.

[0015] A further technical solution is as follows: the controller is a computer, the computer is wired to a communication device, and the electronic scale is wired to the communication device; the wiring unit is a primary lead or an ammeter; the standard threshold value range is 30g to 300g.

[0016] A further technical solution includes a zinc oxide surge arrester, comprising an arrester body, a first flange, a second flange, and a base. The first flange is fixedly connected to the upper part of the arrester body, the second flange is fixedly connected to the lower part of the arrester body, and the base is fixedly connected to the second flange. The base is located on an electronic scale. The sliding connector includes a first sliding connector and a second sliding connector. The wiring unit includes a primary lead and an ammeter. One end of the first sliding connector is fixedly connected to the first flange, and the other end of the first sliding connector is fixedly connected to the primary lead, so that the first flange is slidably connected to the primary lead through the first sliding connector. One end of the second sliding connector is connected to the second flange, and the other end of the second sliding connector is fixedly connected to the ammeter, so that the second flange is slidably connected to the ammeter through the second sliding connector.

[0017] A further technical solution includes a terminal block, one end of the second sliding connector is connected to the second flange via the terminal block, the second flange is fixedly connected to the terminal block, and the terminal block is fixedly connected to one end of the second sliding connector.

[0018] A further technical solution is that the ammeter is grounded.

[0019] A further technical solution is that the terminal block is a copper busbar.

[0020] A further technical solution is that the sliding connector includes a sliding tube and a sliding rod, the sliding rod is located inside the sliding tube, and the sliding rod is slidably connected to the sliding tube.

[0021] A method for monitoring the moisture absorption of a zinc oxide surge arrester, based on the aforementioned device, includes a monitoring step. The monitoring step includes an electronic scale obtaining mass data of the zinc oxide surge arrester and sending it to a controller. The controller obtains the monitored mass data of the zinc oxide surge arrester sent by the electronic scale, compares the monitored mass data with standard mass data to obtain the mass change, and obtains the moisture absorption status of the zinc oxide surge arrester based on the mass change and a standard threshold. The moisture absorption status is either yes or no.

[0022] The beneficial effects of adopting the above technical solution are as follows:

[0023] First, a device for monitoring the moisture absorption of a zinc oxide surge arrester includes an electronic scale, a sliding contact connector, a communication device, and a controller. The electronic scale and the communication device are connected and communicate with each other. The controller is also connected and communicates with the communication device. The electronic scale carries the zinc oxide surge arrester, monitors and obtains its mass data, and sends it to the controller. The sliding contact connector is electrically connected between the flange and the wiring unit of the zinc oxide surge arrester. The controller obtains the monitored mass data of the zinc oxide surge arrester, compares the monitored mass data with standard mass data to obtain the mass change, and determines the moisture absorption status of the zinc oxide surge arrester based on the mass change and a standard threshold. This technical solution, by electrically connecting the flange and the wiring unit of the zinc oxide surge arrester through the sliding contact connector, allows the zinc oxide surge arrester on the electronic scale to move freely in the vertical direction. The electronic scale can obtain the mass data of the zinc oxide surge arrester in real time. When the zinc oxide surge arrester becomes damp, the increased mass due to moisture can be detected by the electronic scale, thus providing the basic ability to detect moisture absorption in the zinc oxide surge arrester.

[0024] Second, a method for monitoring the moisture status of a zinc oxide surge arrester, based on the aforementioned device, includes a monitoring step. This step involves an electronic scale acquiring mass data of the zinc oxide surge arrester and sending it to a controller. The controller receives the monitored mass data from the electronic scale, compares the monitored mass data with standard mass data to obtain the mass change, and determines the moisture status of the zinc oxide surge arrester based on the mass change and a standard threshold, indicating whether the moisture status is positive or negative. This technical solution, through the monitoring step, can promptly determine the moisture status of the zinc oxide surge arrester.

[0025] See the detailed implementation section for further description. Attached Figure Description

[0026] Figure 1 This is a structural diagram of the present invention;

[0027] Figure 2 This is a structural diagram of the sliding contact connector in this invention;

[0028] Figure 3 This is a schematic diagram of the principle of the present invention;

[0029] Figure 4 This is the wiring diagram for a conventional surge arrester.

[0030] in:

[0031] 1. Electronic scale;

[0032] 2. First sliding contact connector;

[0033] 3. Second sliding contact connector;

[0034] 4. Slide tube;

[0035] 5 sliding rods;

[0036] 6. Lightning arrester body;

[0037] 7. First flange;

[0038] 8. Second flange;

[0039] 9 bases;

[0040] 10 primary leads;

[0041] 11. Ammeter;

[0042] 12 bronze bars. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0044] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0045] Example 1:

[0046] like Figures 1-3 As shown, the present invention discloses a device for monitoring moisture in zinc oxide surge arresters, comprising an electronic scale, a sliding contact connector, a communication device, a controller, and a monitoring module. The communication device is a wired communication device, and the controller is a computer.

[0047] like Figure 1 As shown, electronic scale 1.

[0048] like Figure 1 As shown, the sliding connector includes a first sliding connector 2 and a second sliding connector 3 with the same structure.

[0049] like Figure 2 As shown, the sliding connector includes a sliding tube 4 and a sliding rod 5. The sliding rod 5 is located inside the sliding tube 4 and is slidably connected to the sliding tube 4.

[0050] like Figure 3As shown, the electronic scale is wired and communicates with the wired communication device, and the computer is wired and communicates with the wired communication device.

[0051] The monitoring module is used to obtain the quality data of the zinc oxide surge arrester from the electronic scale and send it to the controller. The controller obtains the monitored quality data of the zinc oxide surge arrester from the electronic scale, compares the monitored quality data with the standard quality data, obtains the quality change, and obtains the moisture status of the zinc oxide surge arrester based on the quality change and the standard threshold. The moisture status is either yes or no, and the standard threshold value is 30g.

[0052] The controller, electronic scale, and communication device themselves, as well as the corresponding communication connection technology, are existing technologies and will not be described in detail here.

[0053] Instructions for use of Example 1:

[0054] like Figure 1 As shown, connect this device to a zinc oxide surge arrester.

[0055] like Figure 1 As shown, the zinc oxide surge arrester includes a surge arrester body 6, a first flange 7, a second flange 8, and a base 9. The first flange 7 is fixedly connected to the upper part of the surge arrester body 6, the second flange 8 is fixedly connected to the lower part of the surge arrester body 6, and the base 9 is fixedly connected to the second flange 8. The base 9 is located on the electronic scale 1. The first flange 7 is the upper flange, and the second flange 8 is the lower flange.

[0056] The electronic scale is used to carry the zinc oxide surge arrester, monitor and obtain the quality data of the zinc oxide surge arrester and send it to the controller. The sliding contact connector is used to electrically connect the flange and the wiring unit of the zinc oxide surge arrester. The controller is used to obtain the monitored quality data of the zinc oxide surge arrester, compare the monitored quality data with the standard quality data to obtain the quality change, and obtain the moisture status of the zinc oxide surge arrester based on the quality change and the standard threshold.

[0057] like Figure 1 As shown, the wiring unit includes a primary lead 10 and an ammeter 11. The terminal block is a copper busbar 12. One end of the first sliding connector 2, i.e., the sliding tube, is fixedly connected to the first flange 7. The other end of the first sliding connector 2, i.e., the sliding rod, is fixedly connected to the primary lead 10, so that the first flange 7 is slidably connected to the primary lead 10 through the first sliding connector 2. One end of the second sliding connector 3, i.e., the sliding rod, is fixedly connected to the second flange 8 through the copper busbar 12. The other end of the second sliding connector 3, i.e., the sliding tube, is fixedly connected to the ammeter 11, so that the second flange 8 is slidably connected to the ammeter 11 through the copper busbar 12 and the second sliding connector 3. The ammeter 11 is grounded.

[0058] like Figure 1As shown, the second flange 8 is fixedly connected to the copper busbar 12, and the copper busbar 12 is fixedly connected to the slide rod of the second sliding connector 3.

[0059] like Figure 1 As shown, the slide tube of the first sliding connector 2 is a flange-side connector, the slide rod of the first sliding connector 2 is a wiring unit-side connector, the slide rod of the second sliding connector 3 is a flange-side connector, the slide tube of the second sliding connector 3 is a wiring unit-side connector, the flange-side connector and the wiring unit-side connector are slidably connected, the flange-side connector is used for fixed connection with the flange of the zinc oxide surge arrester, and the wiring unit-side connector is used for fixed connection with the wiring unit.

[0060] The first flange 7, the first sliding connector 2, and the primary lead 10 are electrically connected and conductive. The second flange 8, the copper busbar 12, and the second sliding connector 3 are grounded via the ammeter 11.

[0061] Example 2:

[0062] Example 2 differs from Example 1 in that it also includes a zinc oxide surge arrester, a wiring unit and a terminal block, and the corresponding connection relationships.

[0063] like Figures 1-3 As shown, the present invention discloses a device for monitoring moisture in a zinc oxide surge arrester, comprising a zinc oxide surge arrester, a wiring unit, a terminal block, an electronic scale, a sliding contact connector, a communication device, a controller, and a monitoring module. The communication device is a wired communication device, and the controller is a computer.

[0064] like Figure 1 As shown, electronic scale 1.

[0065] like Figure 1 As shown, the sliding connector includes a first sliding connector 2 and a second sliding connector 3 with the same structure.

[0066] like Figure 2 As shown, the sliding connector includes a sliding tube 4 and a sliding rod 5. The sliding rod 5 is located inside the sliding tube 4 and is slidably connected to the sliding tube 4.

[0067] like Figure 1 As shown, the zinc oxide surge arrester includes a surge arrester body 6, a first flange 7, a second flange 8, and a base 9. The first flange 7 is fixedly connected to the upper part of the surge arrester body 6, the second flange 8 is fixedly connected to the lower part of the surge arrester body 6, and the base 9 is fixedly connected to the second flange 8. The base 9 is located on the electronic scale 1. The first flange 7 is the upper flange, and the second flange 8 is the lower flange.

[0068] The electronic scale is used to carry the zinc oxide surge arrester, monitor and obtain the quality data of the zinc oxide surge arrester and send it to the controller. The sliding contact connector is used to electrically connect the flange and the wiring unit of the zinc oxide surge arrester. The controller is used to obtain the monitored quality data of the zinc oxide surge arrester, compare the monitored quality data with the standard quality data to obtain the quality change, and obtain the moisture status of the zinc oxide surge arrester based on the quality change and the standard threshold.

[0069] like Figure 1 As shown, the wiring unit includes a primary lead 10 and an ammeter 11. The terminal block is a copper busbar 12. One end of the first sliding connector 2, i.e., the sliding tube, is fixedly connected to the first flange 7. The other end of the first sliding connector 2, i.e., the sliding rod, is fixedly connected to the primary lead 10, so that the first flange 7 is slidably connected to the primary lead 10 through the first sliding connector 2. One end of the second sliding connector 3, i.e., the sliding rod, is fixedly connected to the second flange 8 through the copper busbar 12. The other end of the second sliding connector 3, i.e., the sliding tube, is fixedly connected to the ammeter 11, so that the second flange 8 is slidably connected to the ammeter 11 through the copper busbar 12 and the second sliding connector 3. The ammeter 11 is grounded.

[0070] like Figure 1 As shown, the second flange 8 is fixedly connected to the copper busbar 12, and the copper busbar 12 is fixedly connected to the slide rod of the second sliding connector 3.

[0071] like Figure 1 As shown, the slide tube of the first sliding connector 2 is a flange-side connector, the slide rod of the first sliding connector 2 is a wiring unit-side connector, the slide rod of the second sliding connector 3 is a flange-side connector, the slide tube of the second sliding connector 3 is a wiring unit-side connector, the flange-side connector and the wiring unit-side connector are slidably connected, the flange-side connector is used for fixed connection with the flange of the zinc oxide surge arrester, and the wiring unit-side connector is used for fixed connection with the wiring unit.

[0072] The first flange 7, the first sliding connector 2, and the primary lead 10 are electrically connected and conductive. The second flange 8, the copper busbar 12, and the second sliding connector 3 are grounded via the ammeter 11.

[0073] like Figure 3 As shown, the electronic scale is wired and communicates with the wired communication device, and the computer is wired and communicates with the wired communication device.

[0074] The monitoring module is used to obtain the quality data of the zinc oxide surge arrester from the electronic scale and send it to the controller. The controller obtains the monitored quality data of the zinc oxide surge arrester from the electronic scale, compares the monitored quality data with the standard quality data, obtains the quality change, and obtains the moisture status of the zinc oxide surge arrester based on the quality change and the standard threshold. The moisture status is either yes or no, and the standard threshold value is 30g.

[0075] The controller, electronic scale, and communication device themselves, as well as the corresponding communication connection technology, are existing technologies and will not be described in detail here.

[0076] Example 3:

[0077] This invention discloses a method for monitoring moisture in zinc oxide surge arresters, based on the apparatus of Example 2, including monitoring steps.

[0078] The monitoring steps include the electronic scale obtaining the quality data of the zinc oxide surge arrester and sending it to the controller. The controller obtains the monitoring quality data of the zinc oxide surge arrester sent by the electronic scale, compares the monitoring quality data with the standard quality data to obtain the quality change, and obtains the moisture status of the zinc oxide surge arrester based on the quality change and the standard threshold. The moisture status is either yes or no.

[0079] When the change in mass is equal to or greater than the standard threshold of 30g, it is known that the zinc oxide surge arrester is damp.

[0080] Example 4:

[0081] The difference between Example 4 and Example 3 is that the standard threshold value is 300g.

[0082] This invention discloses a method for monitoring the moisture content of a zinc oxide surge arrester, including the following monitoring steps: an electronic scale obtains the mass data of the zinc oxide surge arrester and sends it to a controller; the controller obtains the monitored mass data of the zinc oxide surge arrester sent by the electronic scale; the controller compares the monitored mass data with standard mass data to obtain the mass change; and based on the mass change and a standard threshold, the moisture status of the zinc oxide surge arrester is obtained, and the moisture status is either yes or no.

[0083] When the change in mass is equal to or greater than the standard threshold of 300g, it is known that the zinc oxide surge arrester is damp.

[0084] Example 5:

[0085] The difference between Example 5 and Example 3 is that the standard threshold value is 50g.

[0086] This invention discloses a method for monitoring the moisture content of a zinc oxide surge arrester, including the following monitoring steps: an electronic scale obtains the mass data of the zinc oxide surge arrester and sends it to a controller; the controller obtains the monitored mass data of the zinc oxide surge arrester sent by the electronic scale; the controller compares the monitored mass data with standard mass data to obtain the mass change; and based on the mass change and a standard threshold, the moisture status of the zinc oxide surge arrester is obtained, and the moisture status is either yes or no.

[0087] When the change in mass is equal to or greater than the standard threshold of 50g, it is known that the zinc oxide surge arrester is damp.

[0088] Compared to the above embodiments, the standard threshold value is 100g, which will not be repeated here.

[0089] Compared to the above embodiments, the standard threshold value is 150g, which will not be repeated here.

[0090] Compared to the above embodiments, the standard threshold value is 200g, which will not be repeated here.

[0091] Compared to the above embodiments, the standard threshold value is 250g, which will not be repeated here.

[0092] Example 6:

[0093] The present invention discloses a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps in Embodiment 3.

[0094] Compared to the above embodiments, the program module can also be a hardware module made using existing logic operation technology to implement the corresponding logic operation steps, communication steps and control steps, thereby realizing the above-mentioned corresponding steps. The logic operation unit is existing technology and will not be described in detail here.

[0095] Research and development process:

[0096] 1. Technical problems to be solved

[0097] Leakage current testing and infrared thermometry can effectively detect moisture defects in zinc oxide surge arresters. However, infrared thermometers and online resistive current monitoring devices for surge arresters are expensive. There is an urgent need for a new, low-cost, and accurate method to determine moisture defects in zinc oxide surge arresters.

[0098] 2 Technical Solution

[0099] Weight monitoring method:

[0100] like Figure 1 As shown in the improved wiring diagram, the primary lead 10 is connected to the upper flange of the surge arrester via a sliding device, and the lower flange is connected to the copper busbar 12. The copper busbar 12 is connected to the ammeter 11 via a sliding device. The sliding device consists of a sliding rod and a sliding tube, which are electrically connected while sliding freely. The sliding device ensures that the electronic scale bears and only bears the weight of the surge arrester, the bottom copper busbar 12, the sliding tube of the upper flange side sliding device, and the sliding rod of the lower flange side sliding device.

[0101] The weight of surge arresters of the same type in the substation is monitored, and the weight is compared horizontally. A limit value 'a' is set. When the difference between the weight of a surge arrester and the average weight of other surge arresters exceeds the limit value 'a', the surge arrester is considered to be suspected of being damp. Infrared thermometry, resistive current testing, and other tests are immediately carried out to retest the condition of the surge arrester.

[0102] 3. Beneficial effects

[0103] When a surge arrester gets damp, its weight increases. By slightly modifying the original structure of the surge arrester, its weight can be measured using an ordinary electronic scale, and the condition of the surge arrester can be determined based on the weight difference. This method is simple in structure and low in cost.

[0104] 4 Inventive Concept

[0105] When a surge arrester gets damp, its weight increases. By slightly modifying the original structure of the surge arrester, its weight can be measured using an ordinary electronic scale, and the condition of the surge arrester can be determined based on the weight difference. This method is simple in structure and low in cost.

[0106] Technical contributions of this application:

[0107] After communication between the authors and inventors, the project team concluded that the technical contribution of this project lies in the structural combination. By electrically connecting the flange of the zinc oxide surge arrester to the wiring unit via a sliding connector, the zinc oxide surge arrester on the electronic scale can move freely in the vertical direction. When the zinc oxide surge arrester becomes damp, the increased mass due to moisture can be detected by the electronic scale, thus providing a basic ability to detect moisture in the zinc oxide surge arrester. This aspect is fundamentally different from existing technical solutions and is not easily conceived.

[0108] A further technical contribution lies in the fact that, after obtaining the monitoring quality data of the zinc oxide surge arrester showing quality changes, the amount of quality change is obtained by comparing it with standard quality data. This change is then compared with a standard threshold to determine whether the arrester has become damp. This part is fundamentally different from existing technical solutions and is not easily conceived.

[0109] When the change in quality is equal to or greater than the standard threshold, it is known that the zinc oxide surge arrester is damp.

[0110] The standard quality data for zinc oxide surge arresters are obtained through actual measurements.

[0111] The standard threshold ranges from 30g to 300g, and was obtained based on the experimental data.

[0112] This application discloses a structure for a sliding contact connector. Similar existing sliding contact connectors can also be used, and the combined technical solution can solve the problem of real-time monitoring of quality data of zinc oxide surge arresters. For example, the first connecting piece and the second connecting piece are slidably connected.

[0113] In addition to the above embodiments, the controller can also be an industrial computer or a microcontroller.

[0114] In addition to the above embodiments, the communication device can also be a wireless communication device, in which the electronic scale and the controller are wirelessly connected and communicate.

[0115] After this application had been running internally for a period of time, the beneficial aspects reported by on-site technicians were:

[0116] This invention relates to a method for monitoring moisture in zinc oxide surge arresters, which has a simple structure and low cost.

[0117] The device includes an electronic scale, a sliding contact connector, a communication device, and a controller. The electronic scale connects to and communicates with the controller via the communication device. The electronic scale is used to carry the zinc oxide surge arrester, monitor and obtain the quality data of the zinc oxide surge arrester, and send it to the controller. The sliding contact connector is used for electrical connection between the flange and the wiring unit of the zinc oxide surge arrester. The controller is used to obtain the monitored quality data of the zinc oxide surge arrester, compare the monitored quality data with standard quality data to obtain the quality change, and obtain the moisture status of the zinc oxide surge arrester based on the quality change and the standard threshold. The method includes a monitoring step, in which the electronic scale obtains the quality data of the zinc oxide surge arrester and sends it to the controller. The controller receives monitoring quality data of the zinc oxide surge arrester from the electronic scale, compares the monitoring quality data with standard quality data to obtain the quality change, and determines the moisture status of the zinc oxide surge arrester based on the quality change and standard threshold, indicating whether the moisture status is yes or no. The flange of the zinc oxide surge arrester is electrically connected to the wiring unit via a sliding contact connector, allowing the zinc oxide surge arrester on the electronic scale to move freely in the vertical direction. The electronic scale can obtain the quality data of the zinc oxide surge arrester in real time. When the zinc oxide surge arrester becomes damp, the increased mass due to moisture can be detected by the electronic scale, allowing for timely assessment of the moisture status.

[0118] Currently, the technical solution of this invention has undergone pilot testing, which is a small-scale trial of the product before large-scale mass production. After the pilot testing was completed, a user survey was conducted on a small scale, and the survey results showed that user satisfaction was high. Now, preparations have begun for the formal production and industrialization of the product (including intellectual property risk warning surveys).

Claims

1. A device for monitoring moisture in zinc oxide surge arresters, characterized in that: It includes an electronic scale, a sliding contact connector, a communication device, and a controller. The electronic scale is connected to and communicates with the communication device, and the controller is connected to and communicates with the communication device. The electronic scale is used to carry the zinc oxide surge arrester, monitor and obtain the quality data of the zinc oxide surge arrester, and send it to the controller. The sliding contact connector is used to electrically connect between the flange and the wiring unit of the zinc oxide surge arrester. The controller is used to obtain the monitored quality data of the zinc oxide surge arrester, compare the monitored quality data with the standard quality data, and obtain the moisture status of the zinc oxide surge arrester. It also includes a zinc oxide surge arrester, which comprises an arrester body, a first flange, a second flange, and a base. The first flange is fixedly connected to the upper part of the arrester body, the second flange is fixedly connected to the lower part of the arrester body, and the base is fixedly connected to the second flange. The base is located on an electronic scale. The sliding contact connector includes a first sliding contact connector and a second sliding contact connector. The wiring unit includes a primary lead and an ammeter. One end of the first sliding contact connector is fixedly connected to the first flange, and the other end of the first sliding contact connector is fixedly connected to the primary lead, so that the first flange is slidably connected to the primary lead through the first sliding contact connector. One end of the second sliding contact connector is connected to the second flange, and the other end of the second sliding contact connector is fixedly connected to the ammeter, so that the second flange is slidably connected to the ammeter through the second sliding contact connector.

2. The device for monitoring moisture in a zinc oxide surge arrester according to claim 1, characterized in that: The sliding contact connector includes a flange-side connector and a wiring unit-side connector. The flange-side connector and the wiring unit-side connector are slidably connected. The flange-side connector is used for fixed connection with the flange of the zinc oxide surge arrester, and the wiring unit-side connector is used for fixed connection with the wiring unit.

3. The device for monitoring moisture in a zinc oxide surge arrester according to claim 1, characterized in that: It also includes a monitoring module, which is used by the electronic scale to obtain the quality data of the zinc oxide surge arrester and send it to the controller. The controller obtains the monitoring quality data of the zinc oxide surge arrester sent by the electronic scale, compares the monitoring quality data with the standard quality data, obtains the quality change, and obtains the moisture status of the zinc oxide surge arrester based on the quality change and the standard threshold. The moisture status is either yes or no.

4. The device for monitoring moisture in a zinc oxide surge arrester according to claim 3, characterized in that: The controller is a computer, which is wired to a communication device, and the electronic scale is wired to the communication device; the wiring unit is a primary lead or an ammeter; the standard threshold value ranges from 30g to 300g.

5. The device for monitoring moisture in a zinc oxide surge arrester according to claim 1, characterized in that: It also includes a terminal block, one end of the second sliding connector is connected to the second flange through the terminal block, the second flange is fixedly connected to the terminal block, and the terminal block is fixedly connected to one end of the second sliding connector.

6. The device for monitoring moisture in a zinc oxide surge arrester according to claim 1, characterized in that: The ammeter is grounded.

7. The device for monitoring moisture in a zinc oxide surge arrester according to claim 5, characterized in that: The terminal block is a copper busbar.

8. The device for monitoring moisture in a zinc oxide surge arrester according to claim 1, characterized in that: The sliding connector includes a sliding tube and a sliding rod, with the sliding rod located inside the sliding tube and slidably connected to the sliding tube.

9. A method for monitoring moisture absorption in a zinc oxide surge arrester, characterized in that: Based on the apparatus of any one of claims 1 to 8, the monitoring step includes: the electronic scale obtaining the quality data of the zinc oxide surge arrester and sending it to the controller; the controller obtaining the monitoring quality data of the zinc oxide surge arrester sent by the electronic scale; comparing the monitoring quality data with the standard quality data to obtain the quality change; and obtaining the moisture status of the zinc oxide surge arrester based on the quality change and the standard threshold, wherein the moisture status is yes or no.

Images