Transformer substation grounding rod with anti-falling monitoring function and transformer substation three-phase grounding device

Abstract

The invention provides a transformer substation grounding rod with an anti-falling monitoring function and a transformer substation three-phase grounding device, and relates to the technical field of power construction equipment.The clamping mechanism of the grounding rod comprises a left clamping assembly and a right clamping assembly which are both fixed to the front end of a handheld mechanism, and a transmission mechanism is fixedly installed on the handheld mechanism; the front ends of the left clamping assembly and the right clamping assembly are movably connected with the left clamping assembly and the right clamping assembly respectively and used for controlling opening and closing of the left clamping assembly and the right clamping assembly; the virtual connection monitoring mechanism is installed on the clamping mechanism and used for forming a conductive loop when the left clamping assembly and the right clamping assembly reliably clamp the conductive object to be clamped, and virtual connection monitoring is achieved. The anti-falling monitoring mechanism is arranged on the clamping mechanism and used for triggering the anti-falling monitoring mechanism through the to-be-clamped conductive object when the left clamping assembly and the right clamping assembly are separated from the clamped to-be-clamped conductive object, and anti-falling monitoring is achieved. According to the scheme, virtual connection and anti-falling monitoring can be carried out on the grounding rod, so that the personal safety of operators is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power construction equipment, and particularly to a substation grounding rod with anti-drop monitoring and a substation three-phase grounding device. Background Art

[0002] With the rapid economic development and continuous improvement of the modernization level, the social demand for electric power is increasing and the dependence is getting stronger. A substation is a place in the power system for voltage and current conversion, receiving and distributing electric energy, and a grounding rod is a commonly used device in the daily operation and maintenance of the power grid. As a key component in the substation safety protection system, the grounding rod is mainly used for lightning protection, fault current discharge, and equipotential grounding during equipment maintenance, and is an important facility to ensure the stable operation of the power system and the safety of operating personnel. In a high-voltage substation, the grounding rod needs to be reliably connected to the grounding grid to conduct abnormal current into the ground through a low-impedance path, avoiding accidents such as equipment insulation breakdown and personnel electric shock. Its typical application scenarios include: temporary grounding during high-voltage equipment outage maintenance, fixed connection of the grounding lead of lightning arresters, construction of a fast fault current discharge channel, etc.

[0003] Traditional grounding rods (refer to the Chinese utility model patent with the patent number CN216529419U) require two people to cooperate in operation. That is, during the use of the grounding rod, when removing the grounding rod, one maintenance personnel needs to hold the grounding rod, and the other maintenance personnel manually controls the rope to pull the first hanging rod and the second hanging rod to open, as well as the first arc-shaped elastic piece and the second arc-shaped elastic piece to open. However, this solution requires two people to cooperate in operation during the maintenance process, which is inconvenient. To solve this problem, the Chinese utility model patent with the patent number CN 218849826U discloses an electromagnetic direct-insert type substation grounding rod. When removing the grounding rod, only one person is required to operate, and there is no need for others to cooperate in operation to control the opening of the arc-shaped elastic piece, so as to quickly remove the grounding rod from the wire.

[0004] However, although the above solutions solve the problem of inconvenient multi-person operation, in practice, the grounding rod often has problems such as loose connection or detachment, and the occurrence of these situations causes the grounding rod to be unable to be reliably grounded, thus making it difficult to ensure the personal safety of operating personnel and maintenance personnel. Summary of the Invention

[0005] In view of this, in view of the above deficiencies, it is necessary to propose a substation grounding rod with anti-drop monitoring and a substation three-phase grounding device to monitor the loose connection and anti-drop of the grounding rod, so as to ensure the personal safety of operating personnel and maintenance personnel.

[0006] In a first aspect, the present invention provides a substation grounding rod with anti-detachment monitoring, comprising: a handheld mechanism, a clamping mechanism, a transmission mechanism, a loose connection monitoring mechanism, and an anti-detachment monitoring mechanism; the clamping mechanism includes a left clamping assembly and a right clamping assembly, both fixedly installed at the front end of the handheld mechanism, the transmission mechanism is fixedly installed on the handheld mechanism, and the front ends are respectively movably connected to the left clamping assembly and the right clamping assembly for controlling the opening and closing of the left clamping assembly and the right clamping assembly; the loose connection monitoring mechanism is installed on the clamping mechanism for forming a conductive loop when the left clamping assembly and the right clamping assembly reliably clamp the conductive object to be clamped, so as to achieve loose connection monitoring; the anti-detachment monitoring mechanism is arranged on the clamping mechanism for being triggered by the conductive object to be clamped when the left clamping assembly and the right clamping assembly are detached from the conductive object to be clamped, so as to achieve anti-detachment monitoring.

[0007] Preferably, the handheld mechanism includes an insulating hollow handheld rod, a non-slip sleeve is sleeved at the tail of the hollow handheld rod, a fixed seat is fixedly arranged at the front end, and a first fixing block is fixedly installed on the fixed seat; through holes coaxial with each other are opened on the fixed seat and the first fixing block.

[0008] Preferably, the transmission mechanism includes: an operating handle, a transmission shaft, a spring, a limiting block, and a second fixing block; the operating handle is movably installed on the hollow handheld rod, one end of which extends into the interior of the hollow handheld rod and is movably connected to one end of the transmission shaft arranged inside the hollow handheld rod, the other end of the transmission shaft sequentially passes through the through holes on the fixed seat and the first fixing block and is fixedly connected to the second fixing block; both the left clamping assembly and the right clamping assembly are movably connected to the fixed seat and the first fixing block; the limiting block is fixedly installed on the transmission shaft located inside the hollow handheld rod, one end of the spring is fixed to the limiting block, and the other end is fixed to the fixed seat.

[0009] Preferably, the left clamping assembly and the right clamping assembly have the same structure and are symmetrically arranged for clamping the conductive object to be clamped; wherein, either the left clamping assembly or the right clamping assembly includes: a clamping head, a first connecting piece, a second connecting piece, and a third connecting piece; the lower end of the clamping head is movably connected to the first end of the first connecting piece, the second end of the first connecting piece is movably connected to the second fixing block, the third end of the first connecting piece is movably connected to one end of the second connecting piece, the other end of the second connecting piece is movably connected to the first fixing block, and the lower part of the clamping part of the clamping head is movably connected to the second fixing block through the third connecting piece.

[0010] Preferably, the clamping surface of the clamping head is an inwardly concave arc structure for the two symmetric clamping heads to fit and clamp the conductive object to be clamped, and the clamping surface is arranged as a toothed structure.

[0011] Preferably, the loose connection monitoring mechanism includes an alarm circuit, which connects the second connectors of the left clamping assembly and the right clamping assembly in series in the circuit, and is used to open the circuit when there is a loose connection in the conductive object to be clamped by the clamping mechanism, and alarm through the first alarm component in the alarm circuit.

[0012] Preferably, a loose connection monitoring control switch is also arranged in the alarm circuit, which is used to control the start and stop of the loose connection monitoring mechanism.

[0013] Preferably, the anti-detachment monitoring mechanism includes: a mechanical trigger, a microswitch, an anti-detachment monitoring control switch and a first alarm component; the middle part of the mechanical trigger is movably installed on the clamping head of the left clamping assembly or the right clamping assembly, and one end extends out of the clamping head to the clamping part, the microswitch is installed on the clamping head of the corresponding clamping assembly, and the other end of the mechanical trigger abuts against the triggering part of the microswitch, so as to touch the mechanical trigger when the conductive object to be clamped falls off from the clamping part of the clamping mechanism, and then the other end of the mechanical trigger triggers the microswitch; the anti-detachment monitoring control switch and the first alarm component are both electrically connected to the microswitch, the anti-detachment monitoring control switch is used to start and stop the anti-detachment monitoring mechanism, and the first alarm component is used to alarm when the microswitch is triggered.

[0014] Preferably, a grounding wire is connected to the clamping head of the left clamping assembly or the right clamping assembly.

[0015] In a second aspect, the present invention provides a substation three-phase grounding device, including: three substation grounding rods with anti-detachment monitoring as described in any one of the first aspects and a three-in-one resistance detection device; The three-in-one resistance detection device includes A, B, and C phase ground wire input ends and a ground wire output end. The A, B, and C phase ground wire input ends are respectively connected to the ground wires of the three substation grounding rods with anti-detachment monitoring. The three substation grounding rods with anti-detachment monitoring are respectively used to clamp the three-phase cables of the transformer, and the ground wire output end is used to connect to the grounding pile in the substation; the three-in-one resistance detection device is used to detect the resistance of each phase and display the resistance value on the display screen corresponding to the phase; The three-in-one resistance detection device is also used to compare the resistance of each phase with a set resistance threshold; if the resistance of a certain phase is greater than the set resistance threshold, an alarm is given through the second alarm component corresponding to the phase, so that when the operator checks that the first alarm component of the substation grounding rod with anti-detachment monitoring of the current phase does not alarm, but the second alarm component of the current phase alarms, it is determined that the opposite side of the current phase is not reliably grounded.

[0016] As can be seen from the above technical solutions, the substation grounding rod with anti-drop monitoring provided by the embodiments of the present invention includes a handheld mechanism, a clamping mechanism, a transmission mechanism, a virtual connection monitoring mechanism, and an anti-drop monitoring mechanism. The clamping mechanism includes a left clamping component and a right clamping component fixedly installed at the front end of the handheld mechanism. The front end of the traditional mechanism is respectively movably connected to the left clamping component and the right clamping component, and can control the opening and closing of the left clamping component and the right clamping component. In this way, by controlling the transmission mechanism, the grounding rod can be conveniently hung on the conductive object to be clamped, or the grounding rod can be removed from the conductive object to be clamped. Further, the virtual connection monitoring mechanism of the grounding rod is installed on the clamping structure, and can form a conductive loop when the left clamping component and the right clamping component reliably clamp the conductive object to be clamped, so as to realize virtual connection monitoring. In this way, when the left clamping component and the right clamping component reliably clamp the conductive object to be clamped, the conductive loop is turned on, and when the left clamping component and the right clamping component do not reliably clamp the conductive object to be clamped, the conductive loop is disconnected, so that the monitoring of whether the grounding rod has a virtual connection can be realized. Further, the anti-drop monitoring mechanism can be triggered by the conductive object to be clamped when the left clamping component and the right clamping component fall off the clamped conductive object, so as to realize anti-drop monitoring. Therefore, based on the grounding rod provided by this solution, the virtual connection and anti-drop of the grounding rod can be monitored, so as to ensure the personal safety of operating personnel and maintenance personnel. Moreover, further using the grounding rod to form a substation three-phase grounding device can be used for monitoring the three phases of the substation, and quickly determine which phase is not reliably grounded when there is an unreliable grounding, so as to facilitate the maintenance personnel to quickly solve the grounding problem targeted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic diagram of a substation grounding rod with anti-drop monitoring provided by an embodiment of the present invention.

[0018] Figure 2 FIG. is a schematic diagram of a handheld mechanism provided by an embodiment of the present invention.

[0019] Figure 3 FIG. is a schematic diagram of a clamping mechanism provided by an embodiment of the present invention.

[0020] Figure 4 FIG. is a schematic diagram of a transmission mechanism provided by an embodiment of the present invention.

[0021] Figure 5 FIG. is a schematic diagram of the handheld part of a handheld mechanism provided by an embodiment of the present invention.

[0022] Figure 6 FIG. is a schematic diagram of a virtual connection monitoring mechanism and an anti-drop monitoring mechanism provided by an embodiment of the present invention.

[0023] Figure 7Schematic diagram of a three-phase grounding device for a substation provided by an embodiment of the present invention.

[0024] In the figure: a hand-held mechanism 10, a hollow hand-held rod 11, an anti-slip sleeve 12, a fixed seat 13, a first fixing block 14, a clamping mechanism 20, a left clamping assembly 21, a clamping head 211, a first connecting member 212, a second connecting member 213, a third connecting member 214, a right clamping assembly 22, a transmission mechanism 30, an operating handle 31, a transmission shaft 32, a spring 33, a limit block 34, a second fixing block 35, a virtual connection monitoring mechanism 40, a first alarm assembly 41, a virtual connection monitoring control switch 42, an anti-detachment monitoring mechanism 50, a mechanical trigger 51, a micro switch 52, an anti-detachment monitoring control switch 53, a conductive object 60 to be clamped, a grounding wire 70, a substation grounding rod 100 with anti-detachment monitoring, a three-in-one resistance detection device 200, a display screen 2001, a second alarm assembly 2002, and a power supply assembly 2003. Detailed implementation manners

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0026] Please refer to Figures 1-6 , an embodiment of the present invention provides a substation grounding rod 100 with anti-detachment monitoring, including: a hand-held mechanism 10, a clamping mechanism 20, a transmission mechanism 30, a virtual connection monitoring mechanism 40, and an anti-detachment monitoring mechanism 50; the clamping mechanism 20 includes a left clamping assembly 21 and a right clamping assembly 22, both of which are fixedly installed at the front end of the hand-held mechanism 10. The transmission mechanism 30 is fixedly installed on the hand-held mechanism 10, and the front ends are respectively movably connected to the left clamping assembly 21 and the right clamping assembly 22 to control the opening and closing of the left clamping assembly 21 and the right clamping assembly 22; the virtual connection monitoring mechanism 40 is installed on the clamping mechanism 20 to form a conductive loop when the left clamping assembly 21 and the right clamping assembly 22 reliably clamp the conductive object 60 to be clamped, so as to realize virtual connection monitoring; the anti-detachment monitoring mechanism 50 is arranged on the clamping mechanism 20 to be triggered by the conductive object 60 to be clamped when the left clamping assembly 21 and the right clamping assembly 22 are detached from the conductive object 60 to be clamped, so as to realize anti-detachment monitoring.

[0027] In this embodiment, by controlling the transmission mechanism 30, the grounding rod can be conveniently hung on the conductive object 60 to be clamped, or removed from the conductive object 60 to be clamped. And through the virtual connection monitoring mechanism 40, a conductive loop can be formed when the left clamping assembly 21 and the right clamping assembly 22 reliably clamp the conductive object 60 to be clamped, so as to realize virtual connection monitoring. That is, when the left clamping assembly 21 and the right clamping assembly 22 reliably clamp the conductive object 60 to be clamped, the conductive loop is turned on, and when the left clamping assembly 21 and the right clamping assembly 22 do not reliably clamp the conductive object 60 to be clamped, the conductive loop is turned off. In this way, the monitoring of whether the grounding rod has a virtual connection can be realized. And through the anti-drop monitoring mechanism 50, when the left clamping assembly 21 and the right clamping assembly 22 drop the clamped conductive object, the anti-drop monitoring mechanism 50 is triggered by the conductive object 60 to be clamped, so that anti-drop monitoring can be realized. Therefore, based on the grounding rod provided by this solution, the virtual connection and anti-drop of the grounding rod can be monitored, thus ensuring the personal safety of operating personnel and workers.

[0028] In one embodiment, the handheld mechanism 10 includes an insulating hollow handheld rod 11, and an anti-slip sleeve 12 is sleeved on the tail of the hollow handheld rod 11, so as to facilitate the operator to hold. And a fixed seat 13 is fixedly arranged at the front end, and a first fixing block 14 is fixedly installed on the fixed seat 13; through holes with the same axis are opened on the fixed seat 13 and the first fixing block 14 for the installation and operation of the transmission mechanism 30.

[0029] Furthermore, the transmission mechanism 30 may include: an operating handle 31, a transmission shaft 32, a spring 33, a limit block 34 and a second fixing block 35; the operating handle 31 is movably installed on the hollow handheld rod 11, one end of which extends into the hollow handheld rod 11 and is movably connected to one end of the transmission shaft 32 arranged inside the hollow handheld rod 11. The other end of the transmission shaft 32 sequentially passes through the through holes on the fixed seat 13 and the first fixing block 14 and is fixedly connected to the second fixing block 35; both the left clamping assembly 21 and the right clamping assembly 22 are movably connected to the fixed seat 13 and the first fixing block 14; the limit block 34 is fixedly installed on the transmission shaft 32 located inside the hollow handheld rod 11, one end of the spring 33 is fixed on the limit block 34, and the other end is fixed on the fixed seat 13.

[0030] In this embodiment, when the operator is implementing the operation, by pulling the operating handle 31 backward, the operating handle 31 will push the transmission shaft 32 forward. The transmission shaft 32 will further drive the second fixing block 35 provided at its front end to move forward. When the second fixing block 35 moves forward, it will drive the left clamping head 211 and the right clamping head 211 movably connected thereto to move, thereby causing the left clamping head 211 and the right clamping head 211 to open. Then, the conductive object 60 to be clamped is placed between the two clamping heads 211. After that, the operator removes the force applied to the operating handle 31. Due to the action of the spring 33, the transmission shaft 32 will move backward, thereby driving the clamping heads 211 on both sides to tightly clamp the conductive object 60 to be clamped.

[0031] Combined with the above content and the attached drawings, it can be seen that the left clamping assembly 21 and the right clamping assembly 22 should have the same structure and be symmetrically arranged to clamp the conductive object 60 to be clamped. Further, in one embodiment, taking the left clamping assembly 21 as an example, it may include: a clamping head 211, a first connecting member 212, a second connecting member 213, and a third connecting member 214. The lower end of the clamping head 211 is movably connected to the first end of the first connecting member 212. The second end of the first connecting member 212 is movably connected to the second fixing block 35. The third end of the first connecting member 212 is movably connected to one end of the second connecting member 213. The other end of the second connecting member 213 is movably connected to the first fixing block 14. The lower part of the clamping portion of the clamping head 211 is movably connected to the second fixing block 35 through the third connecting member 214. In this way, when the transmission shaft 32 is driven to move upward, the left clamping head 211 and the right clamping head 211 will be driven by the third connecting member 214 to open to both sides, thereby realizing the clamping of the conductive object 60 to be clamped.

[0032] In one embodiment, the clamping surface of the clamping head 211 is a concave arc structure for the two symmetric clamping heads 211 to fit and clamp the conductive object 60 to be clamped, and the clamping surface is provided with a toothed structure. In this way, not only can it better fit the outer surface of the conductive object 60 to be clamped, but also the frictional force with the conductive object 60 to be clamped can be increased through the toothed structure, reducing the risk of the conductive object 60 to be clamped falling off.

[0033] For the loose connection monitoring mechanism 40, it may include an alarm circuit. The alarm circuit connects the second connectors 213 of the left clamping assembly 21 and the second connectors 213 of the right clamping assembly 22 in series in the circuit. When there is a loose connection in the conductive object 60 to be clamped by the clamping mechanism 20, the circuit is in an open state, and the first alarm component 41 in the alarm circuit is used to give an alarm. In this way, when the left clamping head 211 and the right clamping head 211 reliably clamp the conductive object 60 to be clamped, the left clamping head 211 and the right clamping head 211 are connected to the alarm circuit, and the entire alarm circuit is in a normal conduction state. When the left clamping head 211 and the right clamping head 211 fail to reliably clamp the conductive object 60 to be clamped, the left clamping head 211 and the right clamping head 211 are in a disconnected state, so that the first alarm component 41 in the alarm circuit will give an alarm to prompt the operator of the risk of loose connection. For the first alarm component 41, it can be a buzzer.

[0034] In addition, a loose connection monitoring control switch 42 can be provided in the alarm circuit to control the start and stop of the loose connection monitoring mechanism 40. That is, when the loose connection monitoring control switch 42 is turned on, the grounding rod enables the loose connection monitoring function, and when the loose connection monitoring control switch 42 is turned off, the grounding rod turns off the loose connection monitoring function.

[0035] For the anti-detachment monitoring mechanism 50, it may include: a mechanical trigger 51, a microswitch 52, an anti-detachment monitoring control switch 53, and a first alarm component 41; the middle part of the mechanical trigger 51 is movably installed on the clamping head 211 of the left clamping assembly 21 or the right clamping assembly 22, and one end extends out of the clamping head 211 to the clamping part. The microswitch 52 is installed on the clamping head 211 of the corresponding clamping assembly, and the other end of the mechanical trigger 51 abuts against the triggering part of the microswitch 52, so that when the conductive object 60 to be clamped falls off from the clamping part of the clamping mechanism 20, it touches the mechanical trigger 51, and then the other end of the mechanical trigger 51 triggers the microswitch 52; the anti-detachment monitoring control switch 53 and the first alarm component 41 are both electrically connected to the microswitch 52. The anti-detachment monitoring control switch 53 is used to start and stop the anti-detachment monitoring mechanism 50, and the first alarm component 41 is used to give an alarm when the microswitch 52 is triggered.

[0036] In this embodiment, a mechanical trigger 51 is provided at the front end of the clamping head 211. When the conductive object 60 to be clamped that is being clamped falls off from the clamping portion, it is bound to touch the mechanical trigger 51. At this time, the touched end of the mechanical trigger 51 will move upward. Due to the movable connection relationship of the mechanical trigger 51, the other end will move downward, and when the other end of the mechanical trigger 51 moves downward, it will touch the trigger part of the microswitch 52. In this way, when the microswitch 52 is triggered, the first alarm component 41 electrically connected thereto will give an alarm to prompt the operator that there is a risk of the conductive object 60 to be clamped falling off, so that the operator can take corresponding measures in time to ensure the operation safety.

[0037] Similarly, the anti-drop monitoring mechanism 50 may also include an anti-drop monitoring control switch 53 for starting and stopping the anti-drop monitoring mechanism 50. The virtual connection monitoring control switch 42 of the virtual connection monitoring mechanism 40 and the anti-drop monitoring control switch 53 of the anti-drop monitoring mechanism 50 can both be arranged at the handheld part of the handheld mechanism 10 to facilitate the handheld operator to turn on and off the switches. For the first alarm components 41 of the anti-drop monitoring mechanism 50 and the virtual connection monitoring mechanism 40, they can be the same buzzer, or different buzzers can be provided for alarming.

[0038] In addition, it is easy to understand that the clamping end of the grounding rod should be connected with a grounding wire 70 for connecting to the grounding pile. Specifically, the grounding wire 70 can be connected to the clamping head 211 of the left clamping assembly 21 or the right clamping assembly 22.

[0039] During actual substation maintenance and other operations, it is usually necessary to ground the three phases, that is, to hang a grounding rod on each of the A, B, and C phases respectively, and then connect the grounding wire 70 of the grounding rod to the grounding pile in the substation. Moreover, during the maintenance operation, not only the grounding wire 70 should be reliably hung in the station, but also the other end of the line should be reliably hung with the grounding wire 70 to meet the operation conditions. Currently, the commonly used method is to ask the dispatcher whether the other side is reliably grounded. However, in actual operations, sometimes it is impossible to contact the members of the operation team, so the confirmation process is relatively troublesome. Moreover, it is impossible to know in time whether the grounding state of the other side has changed during the operation process, which further brings potential safety hazards to the operation. Based on this, as Figure 7 shown, this solution also provides a substation three-phase grounding device, including: three substation grounding rods 100 with anti-drop monitoring as described in any of the above embodiments and a three-in-one resistance detection device 200; The three-in-one resistance detection device 200 includes A, B, and C three-phase ground wire input terminals and a ground wire output terminal. The A, B, and C three-phase ground wire input terminals are respectively connected to the ground wires of three substation grounding rods 100 with anti-disconnection monitoring. The three substation grounding rods 100 with anti-disconnection monitoring are respectively used to clamp the three-phase cables of the transformer, and the ground wire output terminal is used to connect to the grounding pile in the substation; the three-in-one resistance detection device 200 is used to detect the resistance of each phase and display the resistance value on the display screen 2001 corresponding to the phase; The three-in-one resistance detection device 200 is also used to compare the resistance of each phase with a set resistance threshold; if the resistance of a certain phase is greater than the set resistance threshold, an alarm is given through the second alarm component 2002 corresponding to the phase, so that when the operator checks that the first alarm component 41 of the substation grounding rod 100 with anti-disconnection monitoring in the current phase does not give an alarm, but the second alarm component 2002 in the current phase gives an alarm, it is determined that the corresponding phase on the opposite side is not reliably grounded.

[0040] Since whether the local side is reliably grounded can be accurately determined by the loose connection monitoring mechanism 40 and the anti-disconnection monitoring mechanism 50 on the grounding rod provided by this solution. Further, through the three-in-one resistance detection device 200, by detecting the resistance of each phase, it can be determined whether the current phase is reliably grounded through the resistance value. If it is determined that a certain phase is not reliably grounded, and the grounding rod on the local side shows a reliable grounding state, then it can be determined that the corresponding phase on the opposite side has an unreliable grounding situation. In this way, not only the safety of the operator is ensured, but also it can be accurately known which phase has an unreliable grounding situation, which is convenient for reminding the personnel on the opposite side to quickly conduct inspections and grounding operations, greatly improving the operation efficiency.

[0041] Moreover, during the entire operation process, the three-in-one resistance detection device 200 can detect the resistance of each phase. Once an abnormal resistance situation occurs during the operation process, an alarm can be given in time through the second alarm component 2002, so that the local side operator can know in time and take corresponding safety protection measures.

[0042] Of course, the three-in-one resistance detection device 200 is also connected to a power supply component 2003.

[0043] The modules or units in the device of the embodiment of the present invention can be combined, divided, and deleted according to actual needs. The above-disclosed is only a preferred embodiment of the present invention. Of course, the scope of the rights of the present invention cannot be limited by this. Those of ordinary skill in the art can understand the entire or part of the process of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the invention.

Claims

1. A substation grounding rod with anti - shedding monitoring, characterized in that, Comprising: A handheld mechanism, a clamping mechanism, a transmission mechanism, a loose connection monitoring mechanism, and an anti-dropping monitoring mechanism; the clamping mechanism includes a left clamping assembly and a right clamping assembly, both fixedly installed at the front end of the handheld mechanism, the transmission mechanism is fixedly installed on the handheld mechanism, and the front end is respectively movably connected to the left clamping assembly and the right clamping assembly for controlling the opening and closing of the left clamping assembly and the right clamping assembly; the loose connection monitoring mechanism is installed on the clamping mechanism for forming a conductive circuit when the left clamping assembly and the right clamping assembly reliably clamp the conductive object to be clamped, so as to realize loose connection monitoring; the anti-dropping monitoring mechanism is arranged on the clamping mechanism for being triggered by the conductive object to be clamped when the left clamping assembly and the right clamping assembly are separated from the conductive object to be clamped, so as to realize anti-dropping monitoring.

2. The grounding rod for a substation with anti-detachment monitoring according to claim 1, wherein The handheld mechanism includes an insulating hollow handheld rod, a non-slip sleeve is sleeved at the tail of the hollow handheld rod, a fixed seat is fixedly arranged at the front end, and a first fixing block is fixedly installed on the fixed seat; through holes coaxial with each other are formed on the fixed seat and the first fixing block.

3. The grounding rod for a substation with anti-detachment monitoring according to claim 2, characterized in that, The transmission mechanism includes: an operating handle, a transmission shaft, a spring, a limiting block, and a second fixing block; the operating handle is movably installed on the hollow handheld rod, one end of which extends into the interior of the hollow handheld rod and is movably connected to one end of the transmission shaft arranged inside the hollow handheld rod, the other end of the transmission shaft sequentially passes through the through holes on the fixed seat and the first fixing block and is fixedly connected to the second fixing block; both the left clamping assembly and the right clamping assembly are movably connected to the fixed seat and the first fixing block; the limiting block is fixedly installed on the transmission shaft located inside the hollow handheld rod, one end of the spring is fixed to the limiting block, and the other end is fixed to the fixed seat.

4. The grounding rod for a substation with anti-detachment monitoring according to claim 3, characterized in that, The left clamping assembly and the right clamping assembly have the same structure and are symmetrically arranged for clamping the conductive object to be clamped; wherein, either the left clamping assembly or the right clamping assembly includes: a clamping head, a first connecting member, a second connecting member, and a third connecting member; the lower end of the clamping head is movably connected to the first end of the first connecting member, the second end of the first connecting member is movably connected to the second fixing block, the third end of the first connecting member is movably connected to one end of the second connecting member, the other end of the second connecting member is movably connected to the first fixing block, and the lower part of the clamping part of the clamping head is movably connected to the second fixing block through the third connecting member.

5. The grounding rod for a substation with anti-detachment monitoring according to claim 4, characterized in that, The clamping surface of the clamping head is an inwardly concave arc structure for the two symmetric clamping heads to fit and clamp the conductive object to be clamped, and the clamping surface is set as a toothed structure.

6. The grounding rod for a substation with anti - shedding monitoring according to claim 4, wherein, The loose connection monitoring mechanism includes an alarm circuit, which connects the second connecting members of the left clamping assembly and the right clamping assembly in series in the circuit for making the circuit in an open state when the conductive object to be clamped clamped by the clamping mechanism has a loose connection, and alarming through the first alarm component in the alarm circuit.

7. The grounding rod for a substation with anti - shedding monitoring according to claim 6, characterized in that, A loose connection monitoring control switch is further arranged in the alarm circuit for controlling the start and stop of the loose connection monitoring mechanism.

8. The grounding rod for a substation with anti-detachment monitoring according to claim 4, characterized in that, The anti - detachment monitoring mechanism includes: a mechanical trigger, a micro - switch, an anti - detachment monitoring control switch, and a first alarm component; the middle part of the mechanical trigger is movably installed on the clamping head of the left clamping component or the right clamping component, and one end extends out of the clamping head to the clamping part. The micro - switch is installed on the clamping head of the corresponding clamping component, and the other end of the mechanical trigger abuts against the triggering part of the micro - switch, so as to touch the mechanical trigger when the conductive object to be clamped falls off from the clamping part of the clamping mechanism, and then the other end of the mechanical trigger triggers the micro - switch; the anti - detachment monitoring control switch and the first alarm component are both electrically connected to the micro - switch. The anti - detachment monitoring control switch is used to start and stop the anti - detachment monitoring mechanism, and the first alarm component is used to give an alarm when the micro - switch is triggered.

9. The grounding rod for a substation with anti-detachment monitoring according to claim 4, characterized in that, A ground wire is connected to the clamping head of the left clamping component or the right clamping component.

10. A three-phase grounding device for a substation, characterized in that, including: Three substation grounding rods with anti - detachment monitoring as described in any one of claims 1 - 9 and a three - in - one resistance detection device; The three - in - one resistance detection device includes A, B, and C phase ground wire input terminals and a ground wire output terminal. The A, B, and C phase ground wire input terminals are respectively connected to the ground wires of the three substation grounding rods with anti - detachment monitoring. The three substation grounding rods with anti - detachment monitoring are respectively used to clamp the three - phase cables of the transformer, and the ground wire output terminal is used to connect to the grounding pile in the substation; the three - in - one resistance detection device is used to detect the resistance of each phase and display the resistance value on the display screen corresponding to the phase; the three - in - one resistance detection device also includes a power supply component for powering the device. The three - in - one resistance detection device is also used to compare the resistance of each phase with a set resistance threshold. If the resistance of a certain phase is greater than the set resistance threshold, an alarm is given through the second alarm component corresponding to the phase. When the operator checks that the first alarm component of the substation grounding rod with anti - detachment monitoring of the current phase does not give an alarm, but the second alarm component of the current phase gives an alarm, it is determined that the opposite side of the current phase is not reliably grounded.

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