Multifunctional grounding wire system capable of realizing intelligent monitoring and alarming

Abstract

The invention belongs to the technical field of power construction, and particularly relates to a multifunctional ground wire system capable of realizing intelligent monitoring and alarming, which is characterized by comprising a ground wire, a monitoring resistor, a resistor monitoring element and a wire hanging clamp, resistance monitoring elements are hung on four branches of the grounding wire, a detection resistor is connected to the tail end of the grounding wire, and wire hanging clamps are connected to three branches at the head end of the grounding wire. According to the invention, the violation rate of the ground wire is effectively reduced, the problems of unfirm hanging of the ground wire and the like can be timely found and handled by means of the resistance monitoring element, the economic loss is obviously reduced, and the operation safety risk is reduced; and meanwhile, the operation convenience is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of power construction technology and relates to a grounding wire, particularly a multifunctional grounding wire system that can realize intelligent monitoring and alarm. Background Technology

[0002] During electrical work, grounding wires serve as a core safety measure at the work site, playing a crucial role in ensuring the safety of workers. However, existing grounding wires have numerous problems in practical applications, seriously threatening the safety and efficiency of electrical work, as follows:

[0003] Grounding wire violations pose significant and difficult-to-eliminate hazards: Electric shock risk is a major risk at power work sites, and violations such as loose grounding wire connections and insufficient burial depth occur frequently.

[0004] Monitoring the grounding wire connection and removal process is difficult: During the connection and removal of grounding wires, monitoring personnel are limited by objective factors such as perspective and lighting, making it impossible to accurately and quantitatively verify the grounding effect. This makes it difficult to effectively monitor the grounding effect throughout the entire operation, resulting in the inability to detect grounding abnormalities in a timely manner and increasing the risk of the operation.

[0005] Traditional grounding wires have poor adaptability and are difficult to operate: Currently, the types of grounding wire equipment on the market are limited, making it difficult to adapt to diverse field operation equipment. Furthermore, the handle of traditional grounding wires is relatively short, requiring operators to wear insulated gloves, making the actual operation difficult and prone to causing violations of operating procedures, further increasing operational safety risks. Summary of the Invention

[0006] The purpose of this invention is to provide a multifunctional grounding wire system that can realize intelligent monitoring and alarm. This grounding wire effectively solves problems related to grounding wire violations, monitoring, compatibility, and operation through the synergistic effect of the circuit monitoring part and the physical improvement part.

[0007] The technical problem solved by this invention is achieved through the following technical solution:

[0008] A multifunctional grounding wire system capable of intelligent monitoring and alarm is characterized by comprising a grounding wire, a monitoring resistor, a resistance monitoring element, and a hanging clamp. The grounding wire is a grounding wire with three branches at one end. A resistance monitoring element is hung on each of the four branches of the grounding wire. A detection resistor is connected to the tail end of the grounding wire. A hanging clamp is connected to each of the three branches at the head end of the grounding wire.

[0009] Furthermore, the resistance monitoring element includes a resistor and an audible and visual alarm electrically connected to the resistor. The resistance monitoring element is used to collect grounding resistance values ​​in real time. The audible and visual alarm has a preset normal grounding resistance value range, which is set according to the power industry safety standards to ensure compliance with actual operational safety requirements. When the grounding resistance value collected by the resistance monitoring element exceeds the normal range, the audible and visual alarm automatically triggers an audible and visual alarm to promptly remind on-site workers and supervisors.

[0010] Furthermore, the aforementioned clamp includes a grounding clamp, a double-spring hook-type terminal clamp, and an insulating rod. The grounding clamp is installed on the top of the insulating rod, and the double-spring hook-type terminal clamp is installed on the side of the grounding clamp using screws. This composite structure design can adapt to different types and specifications of electrical work equipment, solving the problem of poor compatibility of traditional grounding wires. While ensuring effective contact area, maximum current carrying capacity, and other electrical performance characteristics, it can adapt to various scenarios such as overhead lines, cabinet copper busbars, and cable terminals, thus solving the problem of poor compatibility of traditional grounding wires.

[0011] Moreover, the grounding resistance value collected by the resistance monitoring element can be transmitted to the audible and visual alarm in real time, realizing real-time monitoring of the grounding status throughout the process, breaking the limitations of traditional monitoring, and enabling monitoring personnel to accurately and timely grasp the grounding situation.

[0012] Furthermore, the alarm sound intensity of the sound and light alarm is not less than 80 decibels, and the brightness of the alarm light is visible at a distance of not less than 10 meters under normal lighting conditions.

[0013] Moreover, the measurement accuracy error of the resistance monitoring element does not exceed ±5%, ensuring the accuracy of grounding resistance value monitoring.

[0014] The advantages and beneficial effects of this invention are as follows:

[0015] The multi-functional grounding wire system described in this invention, capable of intelligent monitoring and alarm, has been piloted at 37 power distribution work sites in three grassroots units of State Grid Tianjin Jinghai Power Supply Co., Ltd., including the Daqiuzhuang Power Supply Service Center of Jinghai Company. It has also been promoted and applied in two subcontracting teams, receiving positive feedback. Specific results are as follows:

[0016] Effectively reduced grounding wire violation rate: During the promotion and use period, with the help of resistance monitoring elements, 12 violations such as loose grounding wire connection were detected and dealt with in a timely manner, which reduced the grounding wire violation rate by about 24%, avoided about 12,000 yuan in violation penalties, significantly reduced economic losses, and reduced operational safety risks.

[0017] Significantly improved ease of operation: Workers reported that the improved grounding system significantly reduced the difficulty of operation. Statistics show that the average time for connecting a single grounding wire was reduced by 8 minutes, and the average time for setting up safety measures at power outage sites was reduced by 15 minutes, effectively improving the efficiency of power operations, reducing power outage time, and enhancing power supply reliability.

[0018] Achieving full compatibility at power distribution work sites: Through improvements to the wire clamps, especially the application of the composite hook of "grounding clamp + double spring hook type connection clamp", the grounding wire compatibility rate at power distribution work sites has reached 100%, completely solving the problem of poor compatibility of traditional grounding wires and meeting the needs of different work scenarios. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the hanging clip of the present invention;

[0021] Figure 3 This is the circuit design diagram of the present invention, wherein R1, R2, R3...R n Equivalent resistance at different monitoring points;

[0022] Figure 4 This is the equivalent circuit diagram of the present invention. The reference numerals are:

[0023] 1-Hanging clamp, 2-Grounding wire, 3-Resistance monitoring element, 4-Monitoring resistor, 5-Double spring hook-type terminal clamp, 6-Grounding clamp, 7-Insulating rod. Detailed Implementation

[0024] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.

[0025] An innovative multi-functional grounding wire system capable of intelligent monitoring and alarm is comprising a grounding wire 2, a monitoring resistor 4, a resistance monitoring element 3, and a hanging clamp 1. The grounding wire is a grounding wire with three branches at one end. Resistance monitoring elements are hung on all four branches of the grounding wire. A detection resistor is connected to the tail end of the grounding wire, and hanging clamps are connected to the three branches at the head end of the grounding wire.

[0026] The resistance monitoring element includes a resistance meter and an audible and visual alarm electrically connected to the resistance meter. The resistance monitoring element is used to collect grounding resistance values ​​in real time. The audible and visual alarm has a built-in preset normal grounding resistance value range, which is set according to the power industry safety standards to ensure that it meets the actual operation safety requirements. When the grounding resistance value collected by the resistance monitoring element exceeds the normal range, the audible and visual alarm will automatically trigger to promptly remind on-site operators and supervisors.

[0027] The aforementioned wire clamp includes a grounding clamp 6, a double-spring hook-type terminal clamp 5, and an insulating rod 7. The grounding clamp is installed on the top of the insulating rod, and the double-spring hook-type terminal clamp is installed on the side of the grounding clamp using screws. This composite structure design can adapt to different types and specifications of electrical work equipment, solving the problem of poor compatibility of traditional grounding wires. While ensuring effective contact area, maximum current carrying capacity, and other electrical performance characteristics, it can adapt to various scenarios such as overhead lines, cabinet copper busbars, and cable terminals, solving the problem of poor compatibility of traditional grounding wires.

[0028] The grounding resistance value collected by the resistance monitoring element can be transmitted to the audible and visual alarm in real time, realizing real-time monitoring of the grounding status throughout the process, breaking the limitations of traditional monitoring, and enabling monitoring personnel to accurately and timely grasp the grounding situation.

[0029] The alarm sound intensity of the audible and visual alarm shall not be less than 80 decibels, and the brightness of the alarm light shall be visible at a distance of not less than 10 meters under normal lighting conditions. The measurement accuracy error of the resistance monitoring element shall not exceed ±5%, ensuring the accuracy of grounding resistance value monitoring.

[0030] Example 1

[0031] An innovative multi-functional grounding wire system with intelligent monitoring and alarm capabilities includes a grounding wire, a monitoring resistor, a resistance monitoring element, and a hanging clamp. The grounding wire uses multi-core copper wire with three branches at one end, forming four branched wires. Resistance monitoring elements are fixedly mounted on each of the four branched wires using clips. The resistance meter in the resistance monitoring element is a high-precision digital resistance meter with a measurement accuracy error controlled within ±3%. An audible and visual alarm is electrically connected to the resistance meter via a wire. The built-in normal grounding resistance value range is set to 0-10Ω. When the grounding resistance value collected by the resistance meter exceeds 10Ω, the audible and visual alarm is triggered. The alarm sound intensity is 85 decibels, and the alarm light uses a red LED with a visibility distance of 12 meters under normal lighting conditions. A detection resistor with a resistance value of 5Ω is bolted to the end of the grounding wire, serving as the reference resistance for the grounding loop and assisting the resistance meter in calibrating the monitoring data. Figure 4 R1, R2, R3...R nDetection resistors are set for different monitoring points. Each of the three branched conductors at the beginning of the grounding wire is connected to a hanging clamp via threads. The insulating rod of the hanging clamp is 1.5 meters long. A double-spring hook-type terminal clamp is installed on the side of the grounding clamp using M5 screws. The opening size of the double-spring hook-type terminal clamp is adjustable to accommodate conductors and equipment terminals of different diameters. This grounding system was applied at the power distribution work site of the Daqiuzhuang Power Supply Service Center of State Grid Tianjin Jinghai Power Supply Co., Ltd. During 10kV line maintenance, the workers used this system for grounding operations. The double-spring hook-type terminal clamp of the hanging clamp successfully connected to the line conductor, and the grounding clamp reliably connected to the grounding electrode. The resistance monitoring element collected the grounding resistance value in real time and transmitted it to the audible and visual alarm, displaying a grounding resistance value of 6Ω, which is within the normal range. During the operation, an accidental collision caused one of the grounding wires to loosen, and the grounding resistance value rose to 15Ω. The audible and visual alarm immediately sounded and lit a red LED. The monitoring personnel promptly discovered this and notified the workers to re-tighten the grounding wire, preventing a safety accident. In this operation, the single-point grounding wire connection time was 10 minutes, which is 9 minutes shorter than that of traditional grounding wires.

[0032] Working principle: During operation, the hanging clamps are attached to the overhead lines, copper busbars or cable terminals inside the cabinet, and the grounding terminal is connected to the grounding rod. The resistance monitoring element collects the grounding resistance value of each phase in real time and transmits it to the audible and visual alarm. If the resistance value is within the range of 0-10Ω, the system is in normal monitoring status. If the resistance value is greater than 10Ω due to loose connection or insufficient burial depth of the grounding rod, the audible and visual alarm will be triggered immediately (sound intensity 85 decibels, red LED light, visibility distance 12 meters under normal lighting) to remind the staff to handle the situation.

[0033] Example 2

[0034] The difference between this embodiment and Embodiment 1 is that the measurement accuracy error of the resistance monitoring element is ±5%, the alarm sound intensity of the audible and visual alarm is 80 decibels, the visibility distance of the alarm light under normal lighting conditions is 10 meters, and the length of the insulating rod of the hanging clamp is 2 meters. When this system is applied to the subcontracted team's maintenance work on power distribution equipment, during grounding operations on the distribution cabinet, the double-spring hook-type terminal block is tightly connected to the grounding terminal of the distribution cabinet, and the grounding clamp is connected to the grounding grid. The resistance monitoring element displays a grounding resistance value of 8Ω. No grounding abnormalities occurred during the operation. The single-point grounding wire connection operation time was 11 minutes, 7 minutes shorter than traditional grounding wires, and the time for setting up safety measures at the power outage site was shortened by 14 minutes.

[0035] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A multifunctional grounding wire system capable of intelligent monitoring and alarm, characterized in that: It includes a grounding wire, a monitoring resistor, a resistance monitoring element, and a hanging clamp. The grounding wire is a grounding wire with three branches at one end. A resistance monitoring element is hung on each of the four branches of the grounding wire. A detection resistor is connected to the tail end of the grounding wire. A hanging clamp is connected to each of the three branches at the head end of the grounding wire.

2. The multifunctional grounding wire system capable of intelligent monitoring and alarm according to claim 1, characterized in that: The resistance monitoring element includes a resistance meter and an audible and visual alarm electrically connected to the resistance meter. The resistance monitoring element is used to collect grounding resistance values ​​in real time. The audible and visual alarm has a built-in preset normal grounding resistance value range, which is set according to the power industry safety standards to ensure that it meets the actual operation safety requirements. When the grounding resistance value collected by the resistance monitoring element exceeds the normal range, the audible and visual alarm will automatically trigger to promptly remind on-site operators and supervisors.

3. A multifunctional grounding wire system capable of intelligent monitoring and alarm according to claim 2, characterized in that: The hanging clamp includes a grounding clamp, a double-spring hook-type connector clamp, and an insulating rod. The grounding clamp is installed on the top of the insulating rod, and the double-spring hook-type connector clamp is installed on the side of the grounding clamp by screws.

4. A multifunctional grounding wire system capable of intelligent monitoring and alarm according to claim 1, characterized in that: The grounding resistance value collected by the resistance monitoring element can be transmitted to the audible and visual alarm in real time, realizing real-time monitoring of the grounding status throughout the process.

5. A multifunctional grounding wire system capable of intelligent monitoring and alarm according to claim 1, characterized in that: The alarm sound intensity of the sound and light alarm shall not be less than 80 decibels, and the brightness of the alarm light shall be visible at a distance of not less than 10 meters under normal lighting conditions.

6. A multifunctional grounding wire system capable of intelligent monitoring and alarm according to claim 1, characterized in that: The measurement accuracy error of the resistance monitoring element does not exceed ±5%, ensuring the accuracy of grounding resistance value monitoring.

Images