A defect detection device for a high-voltage cable grounding system based on signal injection

Abstract

The present invention discloses a defect detection device for a high-voltage cable grounding system based on signal injection, which relates to the technical field of high-voltage cable grounding and includes: a grounding electrode post, a bolt, a gasket, an auxiliary connection piece, a nut, and a cable. The bolt passes through a fixing hole opened on the grounding electrode post, the nut is threadedly connected to the bolt, the gasket is sleeved on the bolt and fixedly connected to the auxiliary connection piece. Through the design of the defect detection component, the stability of the grounding system can be enhanced; that is, by real-time monitoring the vertical burial state of the grounding electrode post, once it tilts, the detection device can quickly issue a warning; timely notify the operation and maintenance personnel to take measures, such as re-correcting the position of the electrode post and strengthening the surrounding soil, to ensure that the grounding electrode post always maintains a good burial state, which can effectively maintain the stability of the grounding resistance, avoid the change of the resistance caused by the tilt of the electrode post, and further cause current fluctuations, and fundamentally enhance the stability of the high-voltage cable grounding system.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage cable grounding, and particularly to a defect detection device for a high-voltage cable grounding system based on signal injection. Background Art

[0002] In modern power transmission networks, high-voltage cable systems play a crucial role. Their main function is to efficiently and safely transmit the electrical energy generated by power plants in the form of high voltages over long distances to various power consumption areas, meeting the power consumption needs of industrial production, residential life, and various public facilities. Compared with low-voltage power transmission, high-voltage power transmission can effectively reduce the loss of electrical energy during transmission, improve the power transmission efficiency, and achieve large-scale and long-distance power transmission.

[0003] A high-voltage cable system usually consists of multiple core components. Among them, the cable body is the carrier of electrical energy transmission, which is composed of a conductor, an insulating layer, a shielding layer, and a circuit part. The conductor is responsible for conducting current, and the insulating layer ensures the stable transmission of current in the conductor and prevents current leakage; the shielding layer can effectively shield electromagnetic interference and protect the internal structure of the cable from the influence of external electromagnetic fields; in addition, the grounding system is also an indispensable part of the high-voltage cable system, which includes a grounding electrode and a connecting wire component; the grounding electrode, that is, the electrode post, is connected to the shielding layer of the cable through a connecting wire. Its main function is to provide a low-resistance discharge path for the fault current when the cable fails, ensuring the safety of personnel and equipment, and maintaining the normal operation of the power system at the same time.

[0004] However, in the actual operation process, the high-voltage cable system faces many challenges. In the prior art, the electrode post often has problems due to external environmental factors. For example, in some industrial production areas, the strong vibrations generated by the operation of large mechanical equipment will continuously affect the stability of the soil around the electrode post. Over time, this will cause the electrode post to tilt or even fall; in areas with large amounts of sand and dust, long-term sand and dust erosion will cause the soil around the electrode post to erode, destroying its original buried state, and it is also easy to cause the displacement or fall of the electrode post; once the electrode post shows an abnormal situation of falling, its contact area and contact tightness with the soil will change, which will lead to a significant change in the grounding resistance; according to Ohm's law, the change in resistance will inevitably cause fluctuations in the grounding current, which will seriously affect the normal operation of the high-voltage cable system and even trigger power failures, resulting in serious consequences such as large-scale power outages.

[0005] Currently, there are no effective detection measures in the prior art for such defects caused by the tipping of electrode columns, resulting in changes in resistance and current. Traditional detection methods often can only conduct inspections by observing the abnormal manifestations of the power system after a failure, making it difficult to detect potential problems of electrode columns at an early stage. Moreover, there are obvious deficiencies in the protection measures, unable to prevent and mitigate the tipping of electrode columns due to external vibrations and sandstorms in advance, and unable to effectively ensure the stability and reliability of the high-voltage cable grounding system. Based on this, it is urgent to develop a device that can detect defects in the high-voltage cable grounding system in real time and accurately and has a certain protection function. The defect detection device for high-voltage cable grounding system based on signal injection emerged under such a background, aiming to make up for the defects of the prior art and provide more powerful guarantees for the safe and stable operation of high-voltage cables.

[0006] Therefore, the present invention proposes a defect detection device for high-voltage cable grounding system based on signal injection to solve the above problems. Summary of the Invention

[0007] In view of this, the technical problem to be solved by the present invention is to propose a defect detection device for high-voltage cable grounding system based on signal injection to solve the problems existing in the prior art.

[0008] To achieve the above object, the present invention provides the following technical solution: A defect detection device for high-voltage cable grounding system based on signal injection, comprising: a grounding electrode column, a bolt, a gasket, an auxiliary connection piece, a nut, and a cable. The bolt passes through a fixing hole opened on the grounding electrode column, the nut is threadedly connected to the bolt, the gasket is sleeved on the bolt and fixedly connected to the auxiliary connection piece, and the cable is fixedly connected to the auxiliary connection piece. It further includes: a defect detection component and a defect protection component, both the defect detection component and the defect protection component surround the grounding electrode column; the defect detection component is used to detect defects caused by the tipping of the grounding electrode column due to changes in the soil depth of the grounding electrode column caused by external vibrations and sandstorms, resulting in changes in resistance and current; the defect protection component is used to protect the grounding electrode column from tipping due to external vibrations and sandstorms.

[0009] Preferably, the defect detection component includes a support plate, the bottom end of the support plate is fixedly connected with conical spikes at equal intervals, and side plate members A are symmetrically and fixedly connected to the support plate.

[0010] Preferably, a chute is opened in the side plate member A, and a through adjustment hole is opened on the side plate member A.

[0011] Preferably, a sliding plate is slidably connected in the adjustment hole, a sleeve is movably inserted into the sliding plate, and the outer end of the sleeve is threadedly connected with a fastening screw through an internal thread.

[0012] Preferably, a strain gauge is fixedly connected in the sleeve, a fixing ring is fixedly connected in the fastening screw and on one side of the strain gauge, and a spring is fixedly connected to a surface of the fixing ring away from the strain gauge.

[0013] Preferably, a sliding push column is slidably inserted in the sleeve, and a cover shell is fixedly connected to an end of the sliding push column away from the sleeve.

[0014] Preferably, the defect protection assembly includes a local hole penetratingly opened in the support plate, side plate members B symmetrically and fixedly connected to the support plate, and an auxiliary cavity is opened in the side plate members B.

[0015] Preferably, a covering ring is sleeved on the grounding electrode column, moving columns are symmetrically and fixedly connected to an outer end face of the covering ring, and inclined sheets are fixedly connected to the moving columns.

[0016] Preferably, a guiding sheet is fixedly connected to an inner cavity of the side plate member B, a connecting rod is movably inserted in the guiding sheet, and a counterweight block is fixedly connected to a bottom end of the connecting rod.

[0017] Preferably, a vertical rod is fixedly connected to an end of the connecting rod away from the counterweight block, an inclined groove is opened in the vertical rod, and a plugging piece is plugged at a bottom end of the side plate member B.

[0018] Compared with the prior art, the present invention provides a defect detection device for a high-voltage cable grounding system based on signal injection, and has the following beneficial effects: 1. Through the design of the defect detection component, the following benefits can be brought to the overall work: enhancing the stability of the grounding system: by real-time monitoring the vertical burial state of the grounding electrode column, once it tilts, the detection device can quickly give an early warning. This enables maintenance personnel to take timely measures, such as re-correcting the position of the electrode column and reinforcing the surrounding soil, to ensure that the grounding electrode column always maintains a good burial state. In this way, the stability of the grounding resistance can be effectively maintained, avoiding changes in the resistance caused by the tilt of the electrode column and further causing current fluctuations, thereby fundamentally enhancing the stability of the high-voltage cable grounding system and ensuring the continuous and stable power transmission.

[0019] Improving the detection accuracy of the overall device: Changes in the state of the grounding electrode column will affect the transmission characteristics of the injected signal in the grounding system. This detection device can timely detect the abnormality of the electrode column, so that when the detection device based on signal injection analyzes the signal parameters, signal interference or misjudgment will not be caused due to the tilt problem of the electrode column. For example, a normally buried grounding electrode column can make the injected signal propagate uniformly and stably in the grounding system, and the signal received by the detection device can more accurately reflect the true situation of other parts of the grounding system, thereby improving the detection accuracy of the overall device for various grounding defects, such as abnormal grounding resistance and loose connection.

[0020] Reduce operation and maintenance costs and risks: When there is no grounding electrode post status detection device, it is difficult for operation and maintenance personnel to know in advance whether the electrode post is tilted. They can only rely on regular large-scale inspections, and the above methods may also miss problems due to untimely detection. With this detection device, real-time monitoring of the electrode post status can be achieved, problems can be discovered and solved in advance, and large-scale repair work after a grounding fault caused by the tilting of the electrode post can be avoided. This not only saves labor, material and time costs, but also reduces the risk of power interruption caused by grounding faults, and reduces the economic losses caused to industrial production, residents' lives, etc.

[0021] 2. What benefits can the design of side plate part A bring to the overall work of the present invention: Real-time and intuitive warning: In areas with strong winds and sand, the soil around the grounding electrode post is easily eroded by the wind and washed away, resulting in changes in the burial depth of the grounding electrode and affecting the grounding effect. Side plate part A makes good use of this phenomenon. When the soil gradually decreases due to the action of wind and sand and side plate part A begins to be exposed, it can intuitively send a warning to relevant personnel in the first time. Compared with the traditional method of relying on professional detection equipment for regular inspections to detect changes in the depth of the grounding electrode, the above intuitive indication can enable operation and maintenance personnel to detect problems in a timely manner during daily inspections, greatly improving the timeliness of problem discovery, winning valuable time for taking timely measures to correct the depth of the grounding electrode, and effectively preventing grounding faults caused by insufficient depth of the grounding electrode.

[0022] Reduce maintenance costs: In the past, in order to detect changes in the depth of the grounding electrode post in the soil, it was often necessary to invest professional detection equipment and manpower for periodic detection, which was costly and difficult to achieve real-time monitoring. As a sand and wind indication part, side plate part A does not require additional purchase of complex detection equipment, and the depth status of the grounding electrode can be judged only by observing its exposure situation. This greatly reduces the labor, material and time costs required for detection, and at the same time avoids more serious faults and subsequent high maintenance costs caused by failure to detect changes in the depth of the grounding electrode in time, reducing the overall maintenance cost of the grounding system and improving the operation and maintenance efficiency.

[0023] Improve the overall reliability of the device: Side plate part A integrates the functions of a support device and a sand and wind indication. Without increasing the overall complexity of the device, it expands the practical functions of the device. Its function as a sand and wind indication part further improves the monitoring mechanism of the grounding system, enabling the entire defect detection device to better play the role of ensuring the stability of the grounding system in the face of a complex sand and wind environment. This multi-functional design improves the overall reliability of the device, reduces the risk of the entire device failing due to the failure of a single-functional component, and enhances the adaptability and working performance of the device in harsh environments.

[0024] Through the design of the defect protection component, the present invention can bring the following benefits to the overall grounding system: significantly enhancing the stability of the grounding system and resisting the influence of vibration: in areas where there are large equipment or vibration sources around, strong and continuous vibration will gradually loosen the soil around the grounding pole column, eventually causing the pole column to tilt. Through the cooperation of its coating ring, moving column, inclined sheet and inclined groove, the defect protection component can form an anti-displacement structure and a buffer design, which can effectively absorb and disperse vibration energy, reduce the direct impact of vibration on the grounding pole column, maintain the vertical embedding state of the grounding pole column, maintain the resistance stability of the grounding pole column, ensure the normal operation of the grounding system, avoid abnormal current fluctuations caused by the tilting of the pole column, and ensure the continuity and stability of power transmission.

[0025] Reducing maintenance costs: Once the grounding pole column tilts, the repair work is not only cumbersome, but also involves component replacement and re-embedding operations, with high costs. The defect protection component effectively prevents the tilting of the grounding pole column, avoiding the occurrence of such serious faults. Even if there are some minor problems, the design of the defect protection component facilitates quick inspection and maintenance, allows for quick replacement of damaged parts, significantly reduces maintenance costs, extends the service life of the grounding system, and improves the overall return on investment.

[0026] Enhancing system adaptability: The defect protection component can take protective measures against different harsh environments, enabling the high-voltage cable grounding system to be more adaptable to various complex environmental conditions for auxiliary applications. Whether in industrial areas with frequent vibration or at the edge of deserts with severe sandstorms, the grounding system can operate under the protection of the defect protection component, enhancing the environmental adaptability and reliability of the system, and providing strong guarantee for the safe operation of high-voltage cables in different regions.

[0027] Through the combined use of the moving column, inclined sheet, counterweight, inclined groove and plugging piece components, the present invention can bring the following benefits to the overall operation: significantly improving the stability of the grounding pole column and enhancing the dispersion and buffering of impact force: with the combined design of the inclined sheet and the inclined groove, when external factors such as the vibration of large equipment or strong wind impact cause the grounding pole column to have a tendency to topple, the force acting on the grounding pole column will be dispersed in the impact force through the cooperation of the inclined sheet and its inclined surface with the inclined groove. The above-mentioned structural cooperation can disperse the concentrated external force along the inclined direction, avoiding excessive single-point stress; compared with the traditional method that simply relies on support rods or auxiliary brackets, its force dispersion effect is better, greatly reducing the pressure borne by the grounding pole column, thus effectively reducing the risk of the grounding pole column tilting and ensuring that the grounding pole column can still maintain a stable vertical state in a complex external force environment, laying a solid foundation for the stable operation of the grounding system.

[0028] Enhanced vertical stability: The addition of counterweight blocks at the bottom of the vertical rods significantly increases the bottom weight of the overall device including the grounding electrode column component. According to the center of gravity principle, the lower the center of gravity, the more stable the object. The counterweight blocks can indirectly lower the center of gravity of the grounding electrode column, enhancing its ability to resist tipping. At the same time, the plugging piece inserted at the top of the side plate B restricts the movement of the vertical rod, preventing the grounding electrode column from displacing or shaking under external forces during the force transmission. This dual safeguard design from top to bottom further improves the stability of the grounding electrode column in the vertical dimension, comprehensively preventing it from tilting easily under external forces.

[0029] Multi-dimensional protection: The diagonal pieces, diagonal slots, counterweight blocks, and plugging piece components cooperate with each other to form a multi-dimensional protection system. From the force dispersion in the horizontal direction to the center of gravity adjustment and displacement limitation in the vertical direction, each component performs its own functions and works in coordination, providing comprehensive protection against external force threats in different directions and types. Compared with the single support method in the prior art, this comprehensive protection mode can cope with more complex and changeable external force environments, such as simultaneously resisting the combined action of vibration and strong wind, greatly improving the protection reliability of the grounding electrode column under various harsh conditions, and ensuring the continuous and stable operation of the grounding system in different scenarios.

[0030] Reduced failure rate: Due to the significant improvement in the stability of the grounding electrode column, the incidence of grounding faults caused by the tilting of the grounding electrode column is significantly reduced. This means that during daily operation and maintenance, the repair and replacement work due to grounding electrode column problems is greatly reduced. Maintenance personnel do not need to frequently check and handle the tilting problem of the grounding electrode column, saving a large amount of human, material, and time costs. Description of the Drawings

[0031] Figure 1 This is the external view of the main structure of the present invention.

[0032] Figure 2 This is the state diagram of the grounding electrode column of the present invention before installation.

[0033] Figure 3 This is the semi-sectional view of the covering shell in the present invention.

[0034] Figure 4 This is the working state diagram of the defect detection component of the present invention.

[0035] Figure 5 This is the state diagram of the defect detection component of the present invention in the detection working state.

[0036] Figure 6 This is the working state diagram of the defect protection component of the present invention.

[0037] Figure 7 This is the present invention Figure 6 The enlarged view of the structure at A in

[0038] Figure 8 Structural diagrams related to the moving column, diagonal piece, and diagonal groove in the present invention.

[0039] Figure 9 The defect protection component of the present invention is in the detection working state.

[0040] In the figure: 1, grounding electrode column; 2, bolt; 3, gasket; 4, auxiliary link piece; 5, nut; 6, cable.

[0041] 7, defect detection component; 701, support plate; 702, taper spike; 703, side plate part A; 704, chute; 705, adjustment hole; 706, sliding plate; 707, sleeve; 708, fastening screw; 709, strain gauge; 710, fixing ring; 711, spring; 712, sliding push column; 713, covering shell.

[0042] 8, defect protection component; 801, local hole; 802, side plate part B; 804, covering ring; 805, moving column; 806, diagonal piece; 807, guiding piece; 808, connecting rod; 809, counterweight; 810, vertical rod; 811, diagonal groove; 812, plugging piece. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] The present invention will be further described in detail below according to the drawings and embodiments.

[0045] Embodiment: Please refer to Figures 1 to 5 As shown in the figure: To solve the problems mentioned in the technical solution, the embodiment of the present application provides a defect detection device for a high-voltage cable grounding system based on signal injection, including: a grounding electrode column 1, a bolt 2, a gasket 3, an auxiliary link piece 4, a nut 5, and a cable 6. The bolt 2 is inserted into a fixed hole opened on the grounding electrode column 1, the nut 5 is threadedly connected to the bolt 2, the gasket 3 is sleeved on the bolt 2 and fixedly connected to the auxiliary link piece 4, and the cable 6 is fixedly connected to the auxiliary link piece 4. It further includes: a defect detection component 7 and a defect protection component 8. Both the defect detection component 7 and the defect protection component 8 surround the grounding electrode column 1.

[0046] The defect detection component 7 is used to detect defects caused by the grounding electrode column 1 being toppled due to external vibration and sand and dust changing the depth of the grounding electrode column 1 in the soil, resulting in a change in resistance and a change in current.

[0047] The defect detection component 7 includes a support plate 701. At the bottom end of the support plate 701, conical spikes 702 are fixedly connected at equal intervals. On the support plate 701, side plate members A703 are symmetrically and fixedly connected. A chute 704 is formed inside the side plate member A703. An adjusting hole 705 penetrating through is formed in the side plate member A703. A sliding plate 706 is slidably connected in the adjusting hole 705. A sleeve 707 is movably inserted into the sliding plate 706. The outer end of the sleeve 707 is threadedly connected with a fastening screw 708 through an internal thread. A strain gauge 709 is fixedly connected in the sleeve 707. A fixing ring 710 is fixedly connected in the fastening screw 708 and on one side of the strain gauge 709. A spring 711 is fixedly connected to the side of the fixing ring 710 away from the strain gauge 709. A sliding push column 712 is slidably inserted into the sleeve 707. One end of the sliding push column 712 away from the sleeve 707 is fixedly connected with a covering shell 713.

[0048] Among them: The defect detection component 7 is used to detect defects caused by the grounding electrode column 1 being toppled due to changes in the soil depth caused by external vibrations and sand and dust, resulting in changes in resistance and current changes.

[0049] The conical spikes 702 can assist the support plate 701 in being driven into the soil during burial, thereby stabilizing the position and shape of the support plate 701 in the soil.

[0050] The inner diameter of the adjusting hole 705 is adapted to the outer diameter of the sleeve 707; the sleeve 707 can be changed to be located in the adjusting holes 705 at different heights on the side plate member A703 according to different situations, so as to cooperate with the covering shell 713 for the buckling and fixing operation of the grounding electrode column 1.

[0051] The inner cavity of the outer end of the sleeve 707 has a thread adapted to the screwing of the fastening screw 708, and a silica gel sheet is provided at the outer end. When the fastening screw 708 finishes screwing, the fastening screw 708 can just fix the adjusting hole 705 through the silica gel sheet on the sleeve 707.

[0052] The strain gauge 709 has an electrical connection relationship with the total control receiver through wireless sensing. When the strain gauge 709 is subjected to pressure, it can transmit a signal to the total control receiver.

[0053] For a further embodiment: Please refer to Figure 1 、 Figure 2 、 Figures 6 to 9As shown: The defect protection component 8 is used to protect the grounding electrode column 1 from toppling due to external vibration and sand problems. The defect protection component 8 includes a local hole 801 penetratingly opened in the support plate 701. Side plate members B802 are symmetrically and fixedly connected to the support plate 701. An auxiliary cavity is opened in the side plate member B802. A covering ring 804 is sleeved on the grounding electrode column 1. Symmetrically fixed to the outer end face of the covering ring 804 are moving columns 805. Fixed to the moving columns 805 are inclined pieces 806. Fixedly connected to the inner cavity of the side plate member B802 is a guiding piece 807. Inserted movably through the guiding piece 807 is a connecting rod 808. Fixed to the bottom end of the connecting rod 808 is a counterweight 809. Fixed to the end of the connecting rod 808 away from the counterweight 809 is a vertical rod 810. An inclined groove 811 is opened in the vertical rod 810. A plugging piece 812 is plugged at the bottom end of the side plate member B802.

[0054] Among them: The defect protection component 8 is used to protect the grounding electrode column 1 from toppling due to external vibration and sand problems; and multiple sets of the defect protection components 8 can be provided according to specific usage situations, and multiple covering rings 804 can be sleeved at different positions of the grounding electrode column 1.

[0055] The grounding electrode column 1 can pass through it; the guiding piece 807 is adapted to the connecting rod 808.

[0056] The inclined piece 806 is adapted to the inclined groove 811. The inclined piece 806 and the inclined groove 811 cooperate to unload force, and together with the counterweight 809, the stability of the grounding electrode column 1 can be improved.

[0057] In the plugged state of the plugging piece 812 and the side plate member B802, the frictional force between the two can also indirectly slow down the force brought by the inclination of the grounding electrode column 1.

[0058] The working principle of all the contents in the above embodiments is as follows: In the initial state: The spring 711 is in a normal relaxed state, the sliding push column 712 does not contact and squeeze the strain gauge 709, and the counterweight 809 is in an upward moving state under the action of an external force.

[0059] Pre-burial treatment: First, it is necessary to locate and set out the lines; according to the design drawings, use surveying instruments at the construction site to locate and set out the lines to determine the burial position of the grounding electrode column 1. After using lime powder or other marking materials to mark the position of the grounding electrode and the grounding line path on the ground, start excavating the burial pit. Use tools such as shovels or excavators to excavate the burial pit at the marked position. The depth of the burial pit should meet the design requirements, generally not less than 0.6 meters. For areas with a relatively high soil resistivity, a deeper burial is required; the width and length of the pit should be appropriately adjusted according to the size of the grounding electrode column 1 to ensure that the grounding electrode column 1 can be smoothly placed into the pit, and there is enough space around for backfilling and tamping.

[0060] Installation of grounding electrode: Vertically place the designed overall device into the embedding pit, then insert the grounding electrode column 1 through the position where the center of the local hole 801 is located, and use a hammer or a pile driver to drive the grounding electrode column 1 into the ground until the designed depth is reached; further, during the driving process, ensure that the grounding electrode column 1 remains vertical to avoid tilting; for the case of multiple grounding electrode columns 1, bury them in sequence according to the designed spacing; then pass the cable 6 through the reserved hole opened on the covering shell 713, and then install the accessory components on the grounding electrode column 1, which can be referred to in the appendix Figure 2 After the treatment is completed, the covering shell 713 will be buckled on the top of the grounding electrode column 1, which can be referred to in the appendix Figure 1 Then, insert the sliding fitting composed of the sleeve 707 and the sliding push column 712 into the adjustment hole 705 opened on the side plate member A703, and at the same time, it will pass through the hole opened on the sliding plate 706 sliding in the sliding groove 704. When its position is adjusted properly, it can be referred to in the appendix Figure 5 As is known, the outer end inner cavity of the sleeve 707 has a thread adapted to the screwing of the fastening screw 708, and the outer end has a silica gel sheet. When the fastening screw 708 is screwed to the end, the fastening screw 708 can just fix the adjustment hole 705 through the silica gel sheet on the sleeve 707. Therefore, at this time, screwing the fastening screw 708 can fix the adjustment hole 705.

[0061] Furthermore, the same is true for the coating ring 804. It passes through the grounding electrode column 1 before the grounding electrode column 1 is driven into the ground to complete the fixation work between the grounding electrode column 1 and the coating ring 804.

[0062] The following is the working process of the defect detection component 7: When in use, when the grounding electrode column 1 buried in the soil shakes due to external force, it can be referred to in the appendix Figure 4 In the horizontal position where the sleeve 707 and the sliding push column 712 are located, symmetrically set components can stabilize the covering shell 713 on the top of the grounding electrode column 1. If the external force impacts the grounding electrode column 1 greatly and causes the grounding electrode column 1 to tilt, at this time, the grounding electrode column 1 will contact the covering shell 713 through the top and finally cause the covering shell 713 to drive the sliding push column 712 to move into the sleeve 707. During the movement, the spring 711 will be compressed, and the sliding push column 712 will finally squeeze the strain gauge 709 in the sleeve 707. As is known, there is an electrical connection relationship between the strain gauge 709 and the total control receiver through wireless sensing. When the strain gauge 709 is under pressure, it can transmit a signal to the total control receiver; therefore, at this time, the staff in the monitoring room will know that the grounding electrode column 1 here has tilted due to a large impact, and this design makes up for the defects of the grounding system that can only be discovered through inspection tours.

[0063] Furthermore, through the design of the side plate part A703, it can bring real-time and intuitive early warnings to the overall work: In areas with strong wind and sand, the soil around the grounding electrode column 1 is easily eroded and lost by the wind force, resulting in changes in the burial depth of the grounding electrode, which affects the grounding effect. The side plate part A703 makes clever use of this phenomenon. When the soil gradually decreases due to the action of wind and sand and the side plate part A703 begins to be exposed, it can immediately give intuitive warnings to relevant personnel. Compared with the traditional method of relying on professional detection equipment for regular inspections to detect changes in the grounding electrode depth, the above-mentioned intuitive indication enables maintenance personnel to detect problems in a timely manner during daily inspections, greatly improving the timeliness of problem discovery, winning valuable time for taking timely measures to correct the grounding electrode depth, and effectively preventing grounding failures caused by insufficient grounding electrode depth.

[0064] Reduce maintenance costs: In the past, in order to detect changes in the depth of the grounding electrode column 1 in the soil, it was often necessary to invest in professional detection equipment and manpower for periodic detection, which was costly and difficult to achieve real-time monitoring. As a sand and wind indicator, the side plate part A703 does not require additional purchase of complex detection equipment, and the depth state of the grounding electrode can be judged only by observing its exposure situation. This greatly reduces the labor, material and time costs required for detection, and at the same time avoids more serious failures and subsequent high maintenance costs caused by failure to detect changes in the grounding electrode depth in a timely manner, reducing the overall maintenance cost of the grounding system and improving the operation and maintenance efficiency.

[0065] Improve the overall reliability of the device: The side plate part A703 integrates the functions of a support device and a sand and wind indicator, expanding the practical functions of the device without increasing the overall complexity of the device. Its role as a sand and wind indicator further improves the monitoring mechanism of the grounding system, enabling the entire defect detection device to better play the role of ensuring the stability of the grounding system in the face of a complex sand and wind environment; this multi-functional design improves the overall reliability of the device, reduces the risk of the entire device failing due to the failure of a single-functional component, and enhances the adaptability and working performance of the device in harsh environments.

[0066] Please refer to the above working process Figures 1 to 5 。

[0067] The working process of the defect protection component 8 is as follows: Further, actually before the defect detection component 7 works passively, the stability of the grounding electrode post 1 is guarded by the defect protection component 8. That is, when the grounding electrode post 1 is impacted by an external force, the grounding electrode post 1 will drive the covering ring 804 through the transmission of the moving column 805, so that the moving column 805 interacts with the inclined slot 811 opened on the inclined slot 811, thereby dispersing the impact force received. During this process, the vertical rod 810 will be in a state of being forced to rise. However, since the counterweight 809 connected to the bottom end of the vertical rod 810 through the connecting rod 808 will intercept this rising action, ensuring its normal state. At the same time, the plugging piece 812 at the top of the vertical rod 810 can also prevent the vertical rod 810 from rising.

[0068] Further, through the combined use of components such as the moving column 805, the inclined piece 806, the counterweight 809, the inclined slot 811, and the plugging piece 812, the stability of the grounding electrode post 1 can be greatly improved, achieving force dispersion and buffering: That is, the combined design of the inclined piece 806 and the inclined slot 811. When external factors, such as the vibration of large equipment and strong wind impact, cause the grounding electrode post 1 to have a tendency to tip over, the force acting on the grounding electrode post 1 will be dispersed in the impact force through the cooperation of the inclined piece 806 and its inclined surface with the inclined slot 811. The above-mentioned structural cooperation can disperse the concentrated external force along the inclined direction, avoiding excessive single-point stress. Compared with the traditional method that simply relies on support rods or auxiliary brackets, its force dispersion effect is better, greatly reducing the pressure borne by the grounding electrode post 1, thereby effectively reducing the risk of the grounding electrode post 1 tilting and ensuring that the grounding electrode post 1 can still maintain a stable vertical state in a complex external force environment, laying a solid foundation for the stable operation of the grounding system.

[0069] Enhance vertical stability: The addition of the counterweight 809 at the bottom end of the vertical rod 810 significantly increases the bottom weight of the overall device including the grounding electrode post 1 component. According to the center of gravity principle, the lower the center of gravity, the more stable the object. The counterweight 809 can indirectly lower the center of gravity of the grounding electrode post 1, enhancing its ability to resist tipping. At the same time, the plugging piece 812 at the top of the side plate B802 restricts the movement of the vertical rod 810, preventing the grounding electrode post 1 from displacing or shaking when subjected to an external force during the force transmission. This double-guarantee design from top to bottom further improves the stability of the grounding electrode post 1 in the vertical dimension, comprehensively preventing it from easily tilting under the action of external forces.

[0070] Multi-dimensional protection: The diagonal piece 806, diagonal groove 811, counterweight 809, and plugging piece 812 cooperate with each other to form a multi-dimensional protection system. From the force dispersion in the horizontal direction to the center of gravity adjustment and displacement limitation in the vertical direction, each component performs its own functions and works in coordination to provide comprehensive protection against external force threats in different directions and types. Compared with the single support method in the prior art, this comprehensive protection mode can cope with more complex and changeable external force environments, such as simultaneously resisting the combined action of vibration and strong wind, greatly improving the protection reliability of the grounding electrode post 1 under various harsh conditions and ensuring the continuous and stable operation of the grounding system in different scenarios.

[0071] Reduce the failure rate: Due to the significant improvement in the stability of the grounding electrode post 1, the incidence of grounding faults caused by the inclination of the grounding electrode post 1 is significantly reduced. This means that in daily operation and maintenance, the repair and replacement work due to problems with the grounding electrode post 1 is greatly reduced. The operation and maintenance personnel do not need to frequently check and handle the inclination problem of the grounding electrode post 1, saving a large amount of manpower, material resources, and time costs.

[0072] Please refer to the above working process Figure 1 , Figure 2 , Figures 6 to 9 .

[0073] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0074] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A defect detection device for a high-voltage cable grounding system based on signal injection, comprising: Grounding electrode post (1), bolt (2), gasket (3), auxiliary link piece (4), nut (5), cable (6). The bolt (2) is inserted through a fixed hole opened on the grounding electrode post (1). The nut (5) is threadedly connected to the bolt (2). The gasket (3) is sleeved on the bolt (2) and fixedly connected to the auxiliary link piece (4). The cable (6) is fixedly connected to the auxiliary link piece (4). It is characterized in that it further includes: Defect detection component (7), defect protection component (8). The defect detection component (7) and the defect protection component (8) are both surrounded around the grounding electrode post (1); The defect detection component (7) is used to detect defects caused by the grounding electrode post (1) tipping due to changes in the soil depth caused by external vibrations and sandstorms, resulting in changes in resistance and current changes; The defect protection component (8) is used to protect the grounding electrode post (1) from tipping due to external vibrations and sandstorm problems; The defect detection component (7) includes a support plate (701), and side plate parts A (703) are symmetrically and fixedly connected to the support plate (701); An adjustment hole (705) is opened through the side plate part A (703); A sliding plate (706) is slidably connected in the adjustment hole (705), and a sleeve (707) is movably inserted into the sliding plate (706); The outer end of the sleeve (707) is threadedly connected with a fastening screw (708) through an internal thread; a strain gauge (709) is fixedly connected in the sleeve (707); A fixing ring (710) is fixedly connected in the fastening screw (708) and on one side of the strain gauge (709), and a spring (711) is fixedly connected to the side of the fixing ring (710) away from the strain gauge (709).

2. The defect detection device for a high-voltage cable grounding system based on signal injection according to claim 1, wherein: Cone thorns (702) are equidistantly and fixedly connected to the bottom end of the support plate (701).

3. The defect detection device for a high-voltage cable grounding system based on signal injection according to claim 2, characterized in that: A chute (704) is opened in the side plate part A (703).

4. A defect detection device for a high-voltage cable grounding system based on signal injection according to claim 1, characterized in that: A sliding push post (712) is slidably inserted into the sleeve (707), and a cover shell (713) is fixedly connected to the end of the sliding push post (712) away from the sleeve (707).

5. A defect detection device for a high-voltage cable grounding system based on signal injection according to claim 1, characterized in that: The defect protection component (8) includes a local hole (801) opened through the support plate (701). Side plate parts B (802) are symmetrically and fixedly connected to the support plate (701), and an auxiliary cavity is opened in the side plate part B (802).

6. The defect detection device for a high-voltage cable grounding system based on signal injection according to claim 1, characterized in that: A covering ring (804) is sleeved on the grounding electrode post (1). Moving columns (805) are symmetrically fixedly connected to the outer end surface of the covering ring (804), and inclined pieces (806) are fixedly connected to the moving columns (805).

7. The defect detection device for a high-voltage cable grounding system based on signal injection according to claim 5, characterized in that: A guiding piece (807) is fixedly connected to the inner cavity of the side plate part B (802). A connecting rod (808) is movably inserted into the guiding piece (807), and a counterweight (809) is fixedly connected to the bottom end of the connecting rod (808).

8. The defect detection device for a high-voltage cable grounding system based on signal injection according to claim 7, characterized in that: One end of the connecting rod (808) away from the counterweight (809) is fixedly connected with a vertical rod (810). An inclined groove (811) is formed in the vertical rod (810). A plugging piece (812) is plugged at the bottom end of the side plate member B (802).

Images