CN113594791A - Double-grounding maintenance protection device and grounding method for power transmission line - Google Patents
Double-grounding maintenance protection device and grounding method for power transmission line Download PDFInfo
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- CN113594791A CN113594791A CN202110776595.XA CN202110776595A CN113594791A CN 113594791 A CN113594791 A CN 113594791A CN 202110776595 A CN202110776595 A CN 202110776595A CN 113594791 A CN113594791 A CN 113594791A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 46
- 238000012423 maintenance Methods 0.000 title claims abstract description 22
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- 238000004891 communication Methods 0.000 claims description 23
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- 229920001778 nylon Polymers 0.000 claims description 11
- 229920000642 polymer Polymers 0.000 claims description 10
- 230000001012 protector Effects 0.000 claims description 10
- 230000009466 transformation Effects 0.000 claims description 8
- 230000009977 dual effect Effects 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims 2
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- 230000000979 retarding effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
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- 238000003912 environmental pollution Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
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Abstract
The invention relates to the technical field of power transmission line maintenance, in particular to a dual-grounding maintenance protection device for a power transmission line; the first heavy protection device comprises a sliding mechanism, a driving buckle, a grounding device, a lock catch and a constant-speed landing connecting mechanism, wherein the driving buckle is arranged at the upper end of the sliding mechanism, the grounding device is arranged in the sliding mechanism, the lock catch is arranged on both sides of the lower end of the sliding mechanism, and the constant-speed landing connecting mechanism is arranged below the sliding mechanism; the second protection device comprises intelligent electronic equipment, a low-voltage relay, a remote sensing control device, a grounding disconnecting link and a feeder disconnecting link; the invention also comprises a grounding method of the device. The invention better solves the problems that the connecting part of the grounding wire and the ground in the prior art is easy to be separated, thereby threatening the personal safety of maintainers and the like.
Description
Technical Field
The invention relates to the technical field of power transmission line maintenance, in particular to a dual-grounding maintenance protection device and a grounding method for a power transmission line.
Background
With the development and progress of the society, the demand for electric energy is also intensified, most of the power transmission lines run in open fields, mountainous areas and fields, the coverage area is wide, the ecological environment changes infrequently, the power transmission lines are often influenced by severe weather such as strong wind, heavy fog, heavy rain, ice and snow, the icing is too much, bird damage, environmental pollution and temperature change, buildings are built near the wire, soil is excavated beside the tower foundation, and ultrahigh trees are arranged near the line, so that various faults of the power transmission lines can occur in the running process.
When the transmission line breaks down, just need overhaul the transmission line, overhaul transmission line and need carry out ground connection to the power transmission end, this is the work that has very complicated and huge work load, and after the whole ground connection of input of transformer substation, the workman that overhauls just can climb up the shaft tower and take protector to overhaul transmission line.
However, in the prior art, the grounding structure of the protective device and the grounding contact part move along with the movement of the maintainers, and the connecting part of the grounding wire and the ground is very easy to be separated, so that the personal safety of the maintainers is threatened.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the dual grounding maintenance protection device for the power transmission line, which is used for solving the problems that the connection part of the grounding wire and the ground is very easy to separate along with the movement of maintenance personnel, so that the personal safety of the maintenance personnel is threatened and the like in the prior art; the invention also provides a grounding method for solving the problems of low grounding efficiency of the maintenance line and the like:
in order to solve the technical problems, the invention adopts the following technical scheme:
transmission line dual ground connection overhauls protector, including first heavy protector and the heavy protector of second:
the first heavy protection device comprises a sliding mechanism, a driving buckle, a grounding device, a lock catch, a constant-speed landing connecting mechanism and a high-polymer nylon rope, wherein the driving buckle is arranged at the upper end of the sliding mechanism, the grounding device is arranged in the sliding mechanism, the lock catch is arranged on each of two sides of the lower end of the sliding mechanism, the constant-speed landing connecting mechanism is arranged below the sliding mechanism, and the high-polymer nylon rope is arranged between the sliding mechanism and the constant-speed landing connecting mechanism;
the second protection device comprises intelligent electronic equipment, a low-voltage relay, a remote sensing control device, a grounding disconnecting link and a feeder disconnecting link, wherein the low-voltage relay is installed in all substations, the grounding disconnecting link is arranged at the branch position of a power transmission line of a bus in the substation, the grounding disconnecting link is positioned in the low-voltage relay, the feeder disconnecting link is arranged before a first tower of the power transmission line outside the substation, the feeder disconnecting link is positioned in the remote sensing control device, and the remote sensing control device can exchange data with the intelligent electronic equipment.
Further, earthing device includes fixed frame, spool, spacing cylinder, line cylinder, fixed block, earth connection and ground mechanism, be equipped with the spool in the fixed frame, the spool periphery is equipped with the line cylinder, be connected with earth connection one end on the line cylinder, the earth connection twines on the line cylinder, the fixed frame outside is equipped with spacing cylinder, spacing cylinder both ends are equipped with the fixed block, the earth connection other end is equipped with ground mechanism.
Still further, ground mechanism includes briquetting, shell, screw rod, removal module, spacing post, rotation groove, swivelling chute, extension subassembly and resilience subassembly down, the briquetting lower extreme is equipped with the shell down, the inside cavity lower extreme of shell is equipped with the rotation groove, be equipped with the removal module in the cavity, the screw rod passes the removal module through briquetting down and is located the rotation inslot, the screw rod top is equipped with the swivelling chute, the shell inner wall is equipped with a plurality of extension subassemblies, the extension subassembly periphery is equipped with the resilience subassembly, spacing post runs through the removal module.
Still further, the initiative is detained including spliced pole, action wheel, follow driving wheel, friction pulley and hinge, the spliced pole is equipped with two, two spliced pole inboards are equipped with from the driving wheel, two are equipped with the friction pulley from between the driving wheel, the friction pulley surface is equipped with anti-skidding structure, one side is equipped with the hinge from the driving wheel, the hinge other end is equipped with the action wheel, the action wheel passes through the universal driving shaft with the spool and is connected, the universal driving shaft other end is equipped with rotating assembly.
Furthermore, the lock catch comprises two fixed columns, two electromagnets, a magnetic attraction block, a connecting frame, a pulling block, a rotating shaft, locking mechanisms, a locking assembly, a rotating shaft, a limiting groove, a limiting rod, a telescopic assembly, a telescopic spring, a slot and a bolt, the electromagnet is arranged at the upper end part between the two fixed columns, the magnetic attraction block is arranged at the lower end part of the inner side of the two fixed columns, the connecting frame is arranged at the lower end of the magnetic attraction block, the limiting rods are arranged at the two ends of the connecting frame, the limiting rods are positioned in the limiting groove arranged on the fixed columns, the pulling blocks are arranged at the left end and the right end of the connecting frame, the upper end of the pulling block is rotatably connected with the connecting frame through the rotating shaft, the two locking mechanisms are arranged at the lower end of the inner side of the two fixed columns, the upper ends of the two locking mechanisms are rotatably connected with the two fixed columns through the rotating shaft, and the lower ends of the locking mechanisms are rotatably connected with the pulling block through the rotating shaft, the locking mechanism comprises two locking mechanisms, wherein the inner sides of the two locking mechanisms are provided with locking assemblies by leaning on the upper positions, the locking mechanisms and the locking assemblies form an A-shaped structure, one ends of the locking mechanisms are far away from the locking assemblies and are provided with slots and bolts, the locking assemblies are inserted into the slots of the other locking assembly through the bolts, the slots of the locking assemblies are inserted and fixed by the bolts of the other locking assembly, telescopic assemblies are arranged between the locking mechanisms and above the locking assemblies, telescopic springs are arranged in the telescopic assemblies, and the telescopic springs are in a stretching state and are fixedly connected with the inner sides of the two ends of the locking mechanisms and the inner sides of the locking mechanisms.
Furthermore, still be equipped with induction coil, transformer coil, protection resistance, wire jumper and enhancement subassembly in the slide mechanism, induction coil is located slide mechanism, the induction coil lower extreme is equipped with transformer coil, transformer coil has the structure of encircleing two rings at least, transformer coil both ends all extend with protection resistance both ends electrical connection, the inside bottom of slide mechanism is equipped with the enhancement subassembly, it is connected with high polymerization nylon rope to strengthen the subassembly, the wire jumper is connected with the electro-magnet that is located slide mechanism.
Furthermore, a uniform rotating cylinder, a speed reducing component, a moving shaft, a high-speed gear, a retarding gear, a manual rocker, a protective rod, a uniform spring, a uniform component and a speed reducing groove are arranged in the uniform landing connecting mechanism, the upper end of the uniform landing connecting mechanism is provided with the uniform rotating cylinder, the uniform rotating cylinder passes through the moving shaft arranged at the axis center, the speed reducing component is arranged above the uniform rotating cylinder, two ends of the speed reducing component and two ends of the uniform rotating cylinder are fixedly connected with the contact position of the uniform landing connecting mechanism, the right end of the moving shaft is provided with the high-speed gear, the side edge of the high-speed gear is provided with the retarding gear, the high-speed gear is meshed with the retarding gear, the central position of the retarding gear is provided with the manual rocker, most of the manual rocker is positioned at the right side outside the uniform landing connecting mechanism, a plurality of speed reducing grooves are uniformly arranged in the uniform rotating cylinder, the protective rod is arranged at the bottom of the speed reducing grooves, the protection rod is sleeved with a constant-speed spring, the bottom end of the constant-speed spring is fixedly connected with the bottom of the deceleration tank, and the top end of the constant-speed spring is provided with a constant-speed assembly and is fixedly connected with the top end of the constant-speed spring.
Furthermore, the upper end of the sliding mechanism is provided with a scratching buckle, a plurality of elastic connecting belts are arranged below the uniform-speed descending connecting mechanism, and the lower ends of the elastic connecting belts are provided with fixed chairs.
Furthermore, the intelligent electronic equipment is located in a remote control center, a wireless communication module is integrated in the intelligent electronic equipment, a wireless communication module is integrated in the low-voltage relay, a wireless communication module is arranged in the remote sensing control device, and the wireless communication modules exchange and transmit data with each other through a 5G communication protocol.
The grounding method of the double-grounding maintenance protection device of the power transmission line comprises the following steps:
step 1: the intelligent electronic equipment controls the feeder line disconnecting link to be grounded through the intelligent electronic equipment remote control remote sensing control device after receiving an instruction of line maintenance;
step 2: the intelligent electronic equipment sends a control signal to the low-voltage relay through the wireless communication module, and the low-voltage relay starts to acquire the voltage of the low-voltage relay and simultaneously starts to acquire the switching value of a non-voltage action command of the low-voltage relay;
and step 3: calculating the acquired voltage by using fundamental voltage, and judging whether the calculated voltage is less than 30% of rated voltage, namely whether the line is in a non-voltage state; when the line voltage is not in a non-voltage state when being greater than 30% of the rated voltage, the voltage needs to be collected again, and then the voltage is calculated through the fundamental voltage; when the line voltage is less than 30% of the rated voltage, the low-voltage relay is in a non-voltage state, and then whether the low-voltage relay receives a command of low-voltage action is judged; if the low-voltage relay does not receive the command of the low-voltage action, new voltage needs to be collected again, and calculation and judgment are carried out;
and 4, step 4: when the voltage of the line is less than 30% of the rated voltage, the line is in a non-voltage state, and the low-voltage relay receives a non-voltage action command, the low-voltage relay can control the grounding disconnecting link to perform grounding operation;
and 5: during squeeze into earth with earthing mechanism through instrument, then use instrument clockwise rotation swivelling chute, make the extension subassembly insert earth, form a great resistance to strengthen the stability of being connected between earthing mechanism and the ground, when earthing mechanism is pulled out to needs, behind the use instrument anticlockwise rotation swivelling chute, earthing mechanism can easily be pulled out.
Compared with the prior art, the invention has the following beneficial effects:
after the grounding knife switch and the feeder line knife switch at the input end of the power station corresponding to the circuit are grounded in a closed mode through remote control, an overhaul worker drives the grounding structure of the grounding device in the first heavy protection device into the ground, then a tool is used for rotating the rotary groove clockwise, the screw rod rotates clockwise, because the screw rod is provided with threads and the moving module is internally provided with internal threads, the screw rod rotates to drive the moving module to rotate, but one side of the moving module is penetrated through by the limiting column, so that the rotation of the moving module is limited, the moving module can only do downward movement, when the moving module moves downward, the moving module extrudes the extending component beside the extending module to enable the extending component to penetrate through the shell to enter the soil, and meanwhile, the moving module extrudes the rebounding component, and in conclusion, the grounding mechanism increases the connection stability between the grounding mechanism and the soil, so that the grounding device is connected with the ground more firmly, so that detachment does not occur; when the maintainer takes first protector to overhaul on the circuit, when needing to remove on the line, only need the rotatory runner assembly of manual operation, the runner assembly drives the universal driving shaft rotation to it is rotatory to drive the action wheel, and pass through hinged joint between action wheel and the follow driving wheel, follow driving wheel can then the action wheel rotate, rotate from the driving wheel and can drive the friction pulley with electric wire direct contact and rotate, thereby make that whole first protector can relax remove along the electric wire, when first protector removes, earthing device can emit more earth connections simultaneously and guarantee the length of earth connection, to sum up need not to realize removing through directly with the hand pulling electric wire, reduced the inconvenient nature of maintenance.
The invention better solves the problems that the connection part of the grounding wire and the ground is very easy to be separated along with the movement of the maintainer, thereby threatening the personal safety of the maintainer and the like of the grounding structure and the ground contact part of the protective device in the prior art.
Drawings
Fig. 1 is a schematic view of the overall structure of a first protection device of the double-grounding maintenance protection device for the power transmission line;
fig. 2 is a schematic structural view of a grounding active buckle and a grounding device of the dual grounding overhaul protective device of the power transmission line;
fig. 3 is a schematic structural view of a grounding mechanism of the double-grounding overhaul protection device for the power transmission line of the invention;
fig. 4 is a schematic view of a lock catch structure of the double-grounding maintenance protection device for the power transmission line;
fig. 5 is a schematic structural view of the internal part of the sliding mechanism of the double-grounding maintenance protection device for the power transmission line of the invention;
FIG. 6 is a structural diagram of the inside of a constant speed rotating drum of the double-grounding maintenance protection device for the power transmission line of the invention;
FIG. 7 is a structure diagram of the meshing of the external gears of the constant speed rotating drum of the double-grounding maintenance protection device for the power transmission line of the invention;
FIG. 8 is a schematic diagram of the operation of a second protection device of the double grounding overhaul protection device for the power transmission line of the present invention;
fig. 9 is a flow chart of a second protection device of the power transmission line double-grounding overhaul protection device of the present invention;
reference numerals referred to in the drawings are:
a slide mechanism 1; an induction coil 101; a transformer coil 102; a protection resistor 103; a jumper 104; a reinforcement member 105; a lock catch 2; a fixed column 201; an electromagnet 202; a magnetic attraction block 203; a connecting frame 204; a pull block 205; a locking mechanism 206; a locking assembly 207; a limiting groove 208; a stop rod 209; a rotating shaft 210; a rotating shaft 211; a telescoping assembly 212; a tension spring 213; a slot 214; a latch 215; a connecting mechanism 3 is dropped at a constant speed; a uniform speed rotating drum 301; a speed reduction assembly 302; a high-speed gear 303; a retard gear 304; a moving shaft 305; a manual rocker 306; a protection bar 307; a deceleration tank 308; a uniform velocity component 309; a constant velocity spring 310; a high polymer nylon cord 4; scribing 5; an elastic connecting band 6; a fixed chair 7; an intelligent electronic device 8; a low-voltage relay 9; a remote sensing control device 10; a grounding disconnecting link 11; a feeder line disconnecting link 12; a driving buckle 13; a connecting column 1301; a drive wheel 1302; a driven wheel 1303; a friction wheel 1304; a hinge 1305; a grounding device 14; a fixed frame 1401; a bobbin 1402; a limiting roller 1403; a wire drum 1404; a fixed block 1405; a ground line 1406; a linkage shaft 15; a rotating assembly 16; a grounding mechanism 17; a push-down block 1701; a housing 1702; a screw 1703; a movement module 1704; a spacing post 1705; a rotation slot 1706; a rotation slot 1707; an extension member 1708; a rebound assembly 1709.
Detailed Description
In order that those skilled in the art can better understand the present invention, the following technical solutions are further described in conjunction with the accompanying drawings and examples:
the first embodiment is as follows:
as shown in fig. 1-7, the dual grounding overhaul protection device for the power transmission line comprises a first heavy protection device:
the first heavy protection device comprises a sliding mechanism 1, a driving buckle 13, a grounding device 14, a lock catch 2, a constant-speed landing connecting mechanism 3 and a high-polymer nylon rope 4, wherein the driving buckle 13 is arranged on the right side of the upper end of the sliding mechanism 1, an electric wire passes through the upper end of the driving buckle 13, the grounding device 14 is arranged in the sliding mechanism 1, the lock catches 2 are arranged on two sides of the lower end of the sliding mechanism 1, the constant-speed landing connecting mechanism 3 is arranged below the sliding mechanism 1, the high-polymer nylon rope 4 is arranged between the sliding mechanism 1 and the constant-speed landing connecting mechanism 3, cross beams are arranged at two ends of the constant-speed landing connecting mechanism 3, one end of each cross beam is fixedly connected with the constant-speed landing connecting mechanism 3, the other end of each cross beam passes through the lock catch 2, a fixed chair 7 is arranged below the constant-speed landing connecting mechanism 3, elastic connecting belts 6 are arranged on two sides of the fixed chair 7, the lower ends of the elastic connecting belts 6 are fixedly connected with two sides of the fixed chair 7, the rear end of the fixed chair 7 is also provided with an elastic connecting belt 6, and the upper ends of the three elastic connecting belts 6 are fixedly connected with the lower end of the constant-speed descending connecting mechanism 3.
The grounding device 14 comprises a fixed frame 1401, a bobbin 1402, a limiting roller 1403, a line roller 1404, a fixed block 1405, a grounding line 1406 and a grounding mechanism 17, wherein the fixed frame 1401 is in a rectangular frame structure, the fixed frame 1401 is positioned in the sliding mechanism 1, the bobbin 1402 is arranged in the fixed frame 1401, the bobbin 1402 is in a cylindrical shaft structure, the line roller 1404 is arranged on the periphery of the bobbin 1402, the line roller 1404 is in a cylindrical structure with a plurality of interlayers capable of winding, one end of the grounding line 1406 is connected to the line roller 1404, the grounding line 1406 is wound on the line roller 1404, the limiting roller 1403 is arranged on the outer side of the fixed frame 1401, the limiting roller 1403 is fixed through the fixed block 1405, the limiting roller 1403 is connected with the front end of the fixed frame 1401 in a rotating mode, the grounding mechanism 17 is arranged at the other end of the grounding line 1406, and the grounding line 1406 is electrically connected with the grounding mechanism 17.
The grounding mechanism 17 comprises a lower pressing block 1701, a shell 1702, a screw 1703, a moving module 1704, a limiting column 1705, a rotating groove 1706, a rotating groove 1707, an extending assembly 1708 and a rebounding assembly 1709, wherein the lower pressing block 1701 is in a disc-shaped structure, the lower end of the lower pressing block 1701 is provided with the shell 1702, the shell 1702 is in a conical structure with an internal cavity structure, the upper end of the shell 1702 is fixedly connected with the lower end of the lower pressing block 1701, the lower end of the internal cavity of the shell 1702 is provided with the rotating groove 1706, the moving module 1704 is arranged in the cavity, the moving module 1704 is in a circular truncated cone-shaped structure, the screw 1703 penetrates through the moving module 1704 through the lower pressing block 1701 and is positioned in the rotating groove 1706, the surface of the screw 1703 is provided with threads, a corresponding internal thread is arranged in a central through hole of the moving module 1704, the top end of the screw 1707 is provided with the rotating groove 1707, the rotating groove 1707 is in an internal hexagonal structure, the inner wall of the shell 1702 is provided with a plurality of extending assemblies 1708, extension subassembly 1708 periphery is equipped with resilience subassembly 1709, and resilience subassembly 1709 rear end and extension subassembly 1708 rear end fixed connection, resilience subassembly 1709 front end and the contact of shell 1702 inner wall, spacing post 1705 run through and remove module 1704, and spacing post 1705 upper end and lower extreme all with shell 1702 inner wall fixed connection.
The driving buckle 13 comprises a connecting column 1301, a driving wheel 1302, driven wheels 1303, friction wheels 1304 and hinges 1305, two connecting columns 1301 are arranged, the connecting columns 1301 are of a rectangular upright column structure, driven wheels 1303 are arranged on the inner sides of the two connecting columns 1301, the axes of the driven wheels 1303 are rotatably connected with the inner sides of the upper ends of the connecting columns 1301, friction wheels 1304 are arranged between the two driven wheels 1303, two sides of each friction wheel 1304 are fixedly connected with the inner sides of the two driven wheels 1303, an anti-skidding structure is arranged on the surface of each friction wheel 1304, the hinges 1305 are arranged on the driven wheels 1303 on one side, the driving wheel 1302 is arranged at the other end of each hinge 1305, the driving wheel 1302 is connected with a bobbin 1402 through a linkage shaft 15, the other end of the linkage shaft 15 is provided with a rotating assembly 16, a scratch buckle 5 is arranged on the left side of the upper end of the sliding mechanism 1, the rotating assembly 16 can drive the friction wheels 1304 to rotate, and accordingly the whole device is driven to move on an electric wire.
The lock catch 2 comprises two fixed columns 201, electromagnets 202, magnetic suction blocks 203, a connecting frame 204, pull blocks 205, a rotating shaft 211, locking mechanisms 206, locking assemblies 207, a rotating shaft 210, a limiting groove 208, a limiting rod 209, a telescopic assembly 212, a telescopic spring 213, a slot 214 and a bolt 215, wherein the two fixed columns 201 are provided with the electromagnets 202 at the upper end parts between the two fixed columns 201, the magnetic suction blocks 203 are arranged at the lower end parts of the inner sides of the two fixed columns 201, the connecting frame 204 is arranged at the lower end of the magnetic suction blocks 203, the limiting rods 209 are arranged at the two ends of the connecting frame 204, the limiting rods 209 are positioned in the limiting grooves 208 arranged on the fixed columns 201, the pull blocks 205 are arranged at the left end and the right end parts of the connecting frame 204, the upper ends of the pull blocks 205 are rotatably connected with the connecting frame 204 through the rotating shaft 211, the two locking mechanisms 206 are arranged at the lower ends of the inner sides of the two fixed columns 201, and the upper ends of the two locking mechanisms 206 are rotatably connected with the two fixed columns 201 through the rotating shaft 210, the lower ends of the locking mechanisms 206 are rotatably connected with the pull block 205 through rotating shafts 211, locking assemblies 207 are arranged at the upper positions of the inner sides of the two locking mechanisms 206, the locking mechanisms 206 and the locking assemblies 207 form an A shape, a slot 214 and a bolt 215 are arranged at one end, far away from the locking mechanism 206, of each locking assembly 207, each locking assembly 207 is inserted into a slot 214 of the other locking assembly 207 through the bolt 215, the slot 214 of each locking assembly 207 is inserted and fixed through the bolt 215 of the other locking assembly 207, a telescopic assembly 212 is arranged at the position, above the locking assembly 207, between the locking mechanisms 206, a telescopic spring 213 is arranged in each telescopic assembly 212, each telescopic spring 213 is in a stretching state, and two ends of each telescopic spring are fixedly connected with the inner sides of the locking mechanisms 206.
An induction coil 101, a transformation coil 102, a protection resistor 103, a jumper 104 and a reinforcing assembly 105 are arranged in the sliding mechanism 1, the induction coil 101 is located in the sliding mechanism 1, the transformation coil 102 is arranged at the lower end of the induction coil 101, the transformation coil 102 is of a structure surrounding at least two circles, two ends of the transformation coil 102 extend out to be electrically connected with two ends of the protection resistor 103, the reinforcing assembly 105 is arranged at the bottom end inside the sliding mechanism 1, and the jumper 104 is connected with an electromagnet 202 located in the sliding mechanism 1.
The uniform-speed falling connecting mechanism 3 is internally provided with a uniform-speed rotating drum 301, a speed reducing component 302, a moving shaft 305, a high-speed gear 303, a slow-speed gear 304, a manual rocker 306, a protective rod 307, a uniform-speed spring 310, a uniform-speed component 309 and a speed reducing groove 308, the upper end of the uniform-speed falling connecting mechanism 3 is provided with the uniform-speed rotating drum 301, the uniform-speed rotating drum 301 passes through the moving shaft 305 arranged at the axis center, the speed reducing component 302 is arranged above the uniform-speed rotating drum 301, the two ends of the speed reducing component 302 are fixedly connected with the contact positions of the two ends of the uniform-speed rotating drum 301 and the uniform-speed falling connecting mechanism 3, the right end of the moving shaft 305 is provided with the high-speed gear 303, the side edge of the high-speed gear 303 is provided with the slow-speed gear 304, the central position of the slow-speed gear 304 is provided with the manual rocker 306, most of the manual rocker 306 is positioned at the outer right side of the uniform-speed falling connecting mechanism 3, the uniform-speed rotating drum 301 is internally provided with the plurality of the speed reducing grooves 308, the protective rod 307 is arranged at the bottom of the slow-speed groove 308, the outer part of the protection rod 307 is sleeved with a uniform velocity spring 310, the bottom end of the uniform velocity spring 310 is fixedly connected with the bottom of the deceleration groove 308, and the top end of the uniform velocity spring 310 is provided with a uniform velocity component 309 and is fixedly connected.
After the grounding switch 11 and the feeder switch 12 of the power station input end of the corresponding line are grounded in a closed manner through remote control, a maintainer drives the grounding structure of the grounding device 14 in the first heavy protection device into the ground, then a tool is used for rotating the rotating groove 1707 clockwise, the extension assembly 1708 extends out of the shell 1702 to form a large resistance with the ground, therefore, the grounding mechanism 17 increases the connection stability with the soil, the connection stability of the grounding device 14 and the ground is improved, separation cannot occur, after the overhaul is finished, the grounding structure 17 needs to be taken out of the ground, an inner hexagonal tool is inserted into the rotating groove 1707 for anticlockwise rotation, the extension assembly 1708 is retracted into the shell 1702, and finally the grounding mechanism 17 is pulled out by the tool; when a maintainer carries the first protective device to a line to overhaul, and needs to move on the line, the maintainer only needs to manually rotate the rotating assembly 16, the rotating assembly 16 drives the linkage shaft 15 to rotate, so as to drive the driving wheel 1302 to rotate, the driving wheel 1302 is connected with the driven wheel 1303 through the hinge 1305, the driven wheel 1303 can rotate along with the driving wheel 1302, and the driven wheel 1303 rotates to drive the friction wheel 1304 directly contacted with the line to rotate, so that the whole first protective device can easily move along the line, and when the first protective device moves, the grounding device 14 can simultaneously emit more grounding wires 1406 to ensure the length of the grounding wires 1406, so that the movement is realized without directly pulling the line by hands, and the overhaul convenience is improved; when residual electricity is suddenly transmitted in a line, a variable magnetic field can be generated nearby, when the variable magnetic field passes through the induction coil 101, induced current can be generated, when current with a variable size is generated in the induction coil 101, a variable magnetic field can be generated, the variable magnetic field can pass through the transformer coil 102, therefore, because the transformer coil 102 is formed by winding for multiple times, a large variable current is generated in the transformer coil 102, the current starts the electromagnet 202 through the jumper 104, the electromagnet 202 generates magnetic force to attract the magnetic attraction block 203 upwards, so that the connecting frame 204 is driven to move upwards along the limiting groove 208, the two pull blocks 205 are driven to move upwards, the pull blocks 205 can overcome the resistance of the expansion spring 213 and the friction force between the locking assembly 207 and the cross beam, the locking mechanism 206 can rotate along the rotating shaft 210, and then the two locking assemblies 207 are driven to separate, then the uniform descending connecting mechanism is separated from the lock catch 2 and begins to descend, the uniform rotating drum 301 is driven to rotate under the action of the high polymer nylon rope 4, when the uniform rotating drum 301 rotates too fast, the centrifugal force on the uniform component 309 inside the uniform rotating drum 301 is increased, the uniform component 309 is promoted to move outwards to be in contact with the speed reduction component 302, the rotating speed of the uniform rotating drum 301 is reduced, the centrifugal force is reduced, the uniform component 309 moves backwards, the purpose of uniform rotation of the uniform rotating drum 301 is achieved in a reciprocating mode, and the descending safety of maintenance personnel is guaranteed.
Example two:
as shown in fig. 1-9, a second heavy guard is added on the basis of the first embodiment:
the second protection device comprises an intelligent electronic device 8 and a low-voltage relay 9, the remote sensing control device 10, the grounding switch 11 and the feeder switch 12, the low-voltage relay 9 is located in a transformer substation, the grounding switch 11 is arranged at a branch position of a power transmission line of a bus in the transformer substation, the other end of the grounding switch 11 is grounded, the grounding switch 11 is located in the low-voltage relay 9, the low-voltage relay 9 can control the state of the grounding switch 11, the low-voltage relay 9 performs data exchange with the intelligent electronic device 8 through wireless communication, the feeder switch 12 is arranged in front of a first tower of the power transmission line outside the transformer substation, the feeder switch 12 is of a single-pole double-throw structure, one end of the feeder switch 12 is connected with the power transmission line, the other end of the feeder switch 12 is grounded, the feeder switch 12 is located in the remote sensing control device 10, the remote sensing control device 10 can control the state of the feeder switch 12, and the remote sensing control device 10 can perform data exchange with the intelligent electronic device 8.
The intelligent electronic device 8 is internally provided with a main control substrate, a display screen, a grounding switch 11 switch, a feeder switch 12 switch, a power module, function keys and a power switch, wherein the main control substrate is in a rectangular circuit board structure, the lower end of the main control substrate is fixedly connected with the inner cavity of the intelligent electronic device 8, the main control substrate is provided with a control chip, the control chip is electrically connected with the main control substrate, the upper end of the control chip is provided with a wireless communication module and a display module, the wireless communication module is electrically connected with the main control substrate, the display screen is in an LED screen structure, the display screen is electrically connected with the display module, the grounding switch 11 switch is electrically connected with the main control substrate, the feeder switch 12 switch is electrically connected with the main control substrate, the power module is electrically connected with the main control substrate and the display screen, the outer side of the display screen is provided with the function keys, function button and master control base plate electrical connection, the 8 outsides of intelligent electronic equipment are equipped with switch, switch and power module electrical connection.
A low-voltage relay 9 control mainboard is arranged in the low-voltage relay 9, the low-voltage relay 9 control mainboard is fixedly connected with a cavity in the low-voltage relay 9, a relay main control module is arranged at the upper end of the low-voltage relay 9 control mainboard and is electrically connected with the low-voltage relay 9 control mainboard, a wireless communication module, a voltage acquisition module, a non-pressure action control module and a wireless communication module are arranged on the low-voltage relay 9 control mainboard, voltage acquisition module and non-voltage action control module all with low-voltage relay 9 control mainboard electrical connection, grounding switch 11 is located low-voltage relay 9 control mainboard, the 9 sides of low-voltage relay is equipped with the wiring subassembly, wiring subassembly rear end and low-voltage relay 9 control mainboard electrical connection, the integration has wireless communication module on the remote sensing controlling means 10, wireless communication module uses 5G communication protocol to carry out data exchange and data transmission between each other.
The use method of the second double-protection device of the double-protection device for overhauling the power transmission line comprises the following steps:
step 1: after receiving a command for line maintenance, the intelligent electronic device 8 controls the switch of the feeder switch 12 and then transmits a control signal to the remote sensing control device 10 through the wireless communication module, and the remote sensing control device 10 controls one end of the feeder switch 12 to be grounded; step 2: the intelligent electronic device 8 sends a signal to the low-voltage relay 9 through the wireless communication module by controlling the switch of the grounding switch 11, the low-voltage relay 9 starts to collect the voltage of the low-voltage relay 9 through the control voltage collecting module, and meanwhile, the low-voltage relay 9 starts to collect the switching value of a command sent by the non-voltage action control module;
step 2: the intelligent electronic device 8 sends a signal to the low-voltage relay 9 through the wireless communication module by controlling the switch of the grounding switch 11, the low-voltage relay 9 starts to collect the voltage of the low-voltage relay 9 through the control voltage collecting module, and meanwhile, the low-voltage relay 9 starts to collect the switching value of a command sent by the non-voltage action control module;
and step 3: calculating the voltage acquired by the voltage acquisition module by using fundamental voltage, and judging whether the calculated voltage is less than 30% of rated voltage, namely whether the line is in a non-voltage state; when the line voltage is not in a non-voltage state when being greater than 30% of the rated voltage, the voltage needs to be collected again, and then the voltage is calculated through the fundamental voltage; when the line voltage is less than 30% of the rated voltage, the low-voltage relay is in a non-voltage state, and then whether the low-voltage relay 9 receives a command of low-voltage action of a non-voltage action control module is judged; if the low-voltage relay 9 does not receive the command of the low-voltage action of the non-voltage action control module, collecting new voltage and calculating and judging the new voltage again;
and 4, step 4: when the voltage of the line is less than 30% of the rated voltage, namely the line is in a non-voltage state, and the low-voltage relay 9 receives a non-voltage action command of the non-voltage action control module, the low-voltage relay 9 can control the grounding disconnecting link 11 to perform grounding operation;
and 5: the maintainer drives the grounding structure of the grounding device 14 in the first heavy protection device into the ground, then uses a tool to rotate the rotating slot 1707 clockwise, the screw 1703 rotates clockwise, because the screw 1703 is threaded and the moving module 1704 is also internally threaded, so that the screw 1703 rotates to drive the moving module 1704 to rotate, but one side of the moving module 1704 is penetrated by the limiting column 1705, thereby limiting the rotation of the moving module 1704, so that the moving module 1704 can only do downward movement, when the moving module 1704 moves downward, the moving module 1704 presses the nearby extending component 1708, so that the extending component 1708 penetrates through the casing 1702 and enters the soil, and meanwhile, the moving module 1704 presses the rebounding component 1709, thereby improving the stability of the grounding device 14 connected with the ground, so that the grounding device can not be separated, after the maintenance is finished, the grounding structure 17 needs to be taken out of the ground, the use of a hex tool inserted into the rotating slot 1707 for counter-clockwise rotation, the upward movement of the travel module 1704 eliminates the travel module 1704 from compressing the extension 1708 and the rebound 1709, thereby allowing the rebound 1709 to return to its original shape while pulling the extension 1708 back into the housing 1702 from the ground, and finally using the tool to pull the ground engaging mechanism 17 out.
The advantages of the second embodiment over the first embodiment are:
the grounding reliability of the whole device is improved, the personal safety of maintainers is improved, the working efficiency of the whole device is improved, and the working effect of the whole device is enhanced.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (10)
1. Transmission line dual ground connection overhauls protector, including first heavy protector and the heavy protector of second, its characterized in that:
the first heavy protection device comprises a sliding mechanism (1), a driving buckle (13), a grounding device (14), a lock catch (2), a constant-speed descending connecting mechanism (3) and a high-polymer nylon rope (4), wherein the driving buckle (13) is arranged at the upper end of the sliding mechanism (1), the grounding device (14) is arranged in the sliding mechanism (1), the lock catches (2) are arranged on two sides of the lower end of the sliding mechanism (1), the constant-speed descending connecting mechanism (3) is arranged below the sliding mechanism (1), and the high-polymer nylon rope (4) is arranged between the sliding mechanism (1) and the constant-speed descending connecting mechanism (3);
the second protection device includes intelligent electronic equipment (8), low-voltage relay (9), remote sensing controlling means (10), ground connection switch (11) and feeder switch (12), install in all substations low-voltage relay (9), the branch road position of the transmission line of the generating line in the substation is equipped with ground connection switch (11), ground connection switch (11) are located low-voltage relay (9), be equipped with feeder switch (12) before the first shaft tower of outer transmission line of transformer substation, feeder switch (12) are located remote sensing controlling means (10), remote sensing controlling means (10) can carry out data exchange with intelligent electronic equipment (8).
2. The transmission line double-grounding overhaul protection device according to claim 1, characterized in that: the grounding device (14) comprises a fixed frame (1401), a bobbin (1402), a limiting roller (1403), a line roller (1404), a fixing block (1405), a grounding line (1406) and a grounding mechanism (17), the bobbin (1402) is arranged in the fixed frame (1401), the line roller (1404) is arranged on the periphery of the bobbin (1402), the line roller (1404) is connected with one end of the grounding line (1406), the grounding line (1406) is wound on the line roller (1404), the limiting roller (1403) is arranged on the outer side of the fixed frame (1401), the fixing blocks (1405) are arranged at two ends of the limiting roller (1403), and the grounding mechanism (17) is arranged at the other end of the grounding line (1406).
3. The power transmission line double-grounding overhaul protecting device according to claim 2, characterized in that: the grounding mechanism (17) comprises a pressing block (1701), a shell (1702), a screw rod (1703), a moving module (1704), a limiting column (1705), a rotating groove (1706), a rotating groove (1707), an extending assembly (1708) and a rebounding assembly (1709), wherein the shell (1702) is arranged at the lower end of the pressing block (1701), the rotating groove (1706) is arranged at the lower end of an inner cavity of the shell (1702), the moving module (1704) is arranged in the cavity, the screw rod (1703) penetrates through the moving module (1704) through the pressing block (1701), the rotating groove (1707) is arranged at the top end of the screw rod (1703), the extending assembly (1708) is arranged on the inner wall of the shell (1702), the rebounding assembly (1709) is arranged on the periphery of the extending assembly (1708), and the limiting column (1705) penetrates through the moving module (1704).
4. The power transmission line double-grounding overhaul protecting device according to claim 3, characterized in that: the driving buckle (13) comprises a connecting column (1301), a driving wheel (1302), driven wheels (1303), friction wheels (1304) and hinges (1305), wherein the connecting column (1301) is provided with two connecting columns, the driven wheels (1303) are arranged on the inner sides of the two connecting columns (1301), the friction wheels (1304) are arranged between the two driven wheels (1303), the surface of each friction wheel (1304) is provided with an anti-skidding structure, one side of each driven wheel (1303) is provided with a hinge (1305), the other end of each hinge (1305) is provided with the driving wheel (1302), the driving wheel (1302) is connected with a bobbin (1402) through a linkage shaft (15), and the other end of the linkage shaft (15) is provided with a rotating assembly (16).
5. The transmission line double-grounding overhaul protection device according to claim 4, characterized in that: the lock catch (2) comprises two fixing columns (201), electromagnets (202), magnetic suction blocks (203), connecting frames (204), pull blocks (205), a rotating shaft (211), a locking mechanism (206), a locking assembly (207), a rotating shaft (210), a limiting groove (208), limiting rods (209), a telescopic assembly (212), a telescopic spring (213), a slot (214) and a bolt (215), wherein the electromagnets (202) are arranged at the upper end part between the two fixing columns (201), the magnetic suction blocks (203) are arranged at the lower end parts of the inner sides of the two fixing columns (201), the connecting frames (204) are arranged at the lower ends of the magnetic suction blocks (203), the limiting rods (209) are arranged at the two ends of the connecting frames (204), the limiting rods (209) are positioned in the limiting grooves (208) arranged on the fixing columns (201), the pull blocks (205) are arranged at the left end and the right end of the connecting frames (204), the upper end of the pull block (205) is rotatably connected with the connecting frame (204) through a rotating shaft (211), the lower ends of the inner sides of the two fixed columns (201) are provided with two locking mechanisms (206), the upper ends of the two locking mechanisms (206) are rotatably connected with the two fixed columns (201) through a rotating shaft (210), the lower ends of the locking mechanisms (206) are rotatably connected with the pull block (205) through the rotating shaft (211), locking assemblies (207) are arranged at the upper positions of the inner sides of the two locking mechanisms (206), the locking mechanisms (206) and the locking assemblies (207) form an A shape, one end, far away from the locking mechanism (206), of each locking assembly (207) is provided with a slot (214) and a plug pin (215), each locking assembly (207) is inserted into the slot (214) of the other locking assembly (207) through the plug pin (215), and the slot (214) of each locking assembly (207) is inserted and fixed by the plug pin (215) of the other locking assembly (207), the locking mechanism is characterized in that a telescopic assembly (212) is arranged between the locking mechanisms (206) and above the locking assembly (207), a telescopic spring (213) is arranged in the telescopic assembly (212), and the telescopic spring (213) is in a stretching state and is fixedly connected with the inner sides of the locking mechanisms (206) at two ends.
6. The transmission line double-grounding overhaul protection device according to claim 5, characterized in that: the high-polymer nylon rope sliding mechanism is characterized in that an induction coil (101), a transformation coil (102), a protection resistor (103), a jumper (104) and a reinforcing assembly (105) are arranged in the sliding mechanism (1), the induction coil (101) is located in the sliding mechanism (1), the transformation coil (102) is arranged at the lower end of the induction coil (101), the transformation coil (102) is of a structure at least encircling two circles, two ends of the transformation coil (102) extend out to be electrically connected with two ends of the protection resistor (103), the reinforcing assembly (105) is arranged at the bottom end inside the sliding mechanism (1), the reinforcing assembly (105) is connected with a high-polymer nylon rope (4), and the jumper (104) is connected with an electromagnet (202) located in the sliding mechanism (1).
7. The power transmission line double-grounding overhaul protecting device according to claim 6, characterized in that: the uniform-speed falling connecting mechanism is characterized in that a uniform-speed rotating cylinder (301), a speed reducing assembly (302), a moving shaft (305), a high-speed gear (303), a slow-speed gear (304), a manual rocker (306), a protection rod (307), a uniform-speed spring (310), a uniform-speed assembly (309) and a speed reducing groove (308) are arranged in the uniform-speed falling connecting mechanism (3), the uniform-speed rotating cylinder (301) is arranged at the upper end of the uniform-speed falling connecting mechanism, the moving shaft (305) is arranged at the position of the axis of the uniform-speed rotating cylinder (301), the speed reducing assembly (302) is arranged above the uniform-speed rotating cylinder (301), two ends of the speed reducing assembly (302) and two ends of the uniform-speed rotating cylinder (301) are fixedly connected with the contact position of the uniform-speed falling connecting mechanism (3), the high-speed gear (303) is arranged at the right end of the moving shaft (305), the slow-speed gear (304) is arranged on the side edge of the high-speed gear (303), and the high-speed gear (303) is meshed with the slow-speed gear (304), slow gear (304) central point puts and is equipped with manual rocker (306), manual rocker (306) most are located the outside right side of at the uniform velocity descending coupling mechanism (3), evenly be equipped with a plurality of deceleration tanks (308) in uniform velocity rotary drum (301), deceleration tank (308) bottom is equipped with guard bar (307), the outside cover of guard bar (307) has at the uniform velocity spring (310), at the uniform velocity spring (310) bottom and deceleration tank (308) bottom fixed connection, at the uniform velocity spring (310) top is equipped with at the uniform velocity subassembly (309) and fixed connection.
8. The power transmission line double-grounding overhaul protecting device according to claim 7, characterized in that: slide mechanism (1) upper end is equipped with and draws knot (5), descending coupling mechanism (3) below at the uniform velocity is equipped with a plurality of elastic connection area (6), elastic connection area (6) lower extreme is equipped with fixed chair (7).
9. The transmission line double grounding overhaul protection device of claim 8, characterized in that: the intelligent electronic equipment (8) is located in a remote control center, a wireless communication module is integrated in the intelligent electronic equipment (8), a wireless communication module is integrated in the low-voltage relay (9), a wireless communication module is arranged in the remote sensing control device (10), and the wireless communication modules exchange data and transmit data with each other through a 5G communication protocol.
10. The grounding method of the electric transmission line double grounding overhaul protecting device according to claim 9, characterized in that: the method comprises the following steps:
step 1: after receiving an instruction of line maintenance, the intelligent electronic equipment (8) controls the remote sensing control device (10) to control the feeder line disconnecting link (12) to be grounded through the intelligent electronic equipment (8);
step 2: the intelligent electronic equipment (8) sends a control signal to the low-voltage relay (9) through the wireless communication module, the low-voltage relay (9) starts to acquire the voltage of the low-voltage relay (9), and meanwhile, the switching value of a non-voltage action command of the low-voltage relay (9) starts to be acquired;
and step 3: calculating the acquired voltage by using fundamental voltage, and judging whether the calculated voltage is less than 30% of rated voltage, namely whether the line is in a non-voltage state; when the line voltage is not in a non-voltage state when being greater than 30% of the rated voltage, the voltage needs to be collected again, and then the voltage is calculated through the fundamental voltage; when the line voltage is less than 30% of the rated voltage, the low-voltage relay is in a non-voltage state, and then whether the low-voltage relay (9) receives a command of low-voltage action is judged; if the low-voltage relay (9) does not receive the command of low-voltage action, new voltage needs to be collected again, and calculation and judgment are carried out;
and 4, step 4: when the voltage of the line is less than 30% of the rated voltage, namely the line is in a non-voltage state, and the low-voltage relay (9) receives a non-voltage action command, the low-voltage relay (9) can control the grounding disconnecting link (11) to perform grounding operation;
and 5: the ground engaging mechanism (17) is driven into the earth by a tool, and the extension assembly (1708) is inserted into the earth by rotating the rotating slot (1707) clockwise with the tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110776595.XA CN113594791A (en) | 2021-07-09 | 2021-07-09 | Double-grounding maintenance protection device and grounding method for power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110776595.XA CN113594791A (en) | 2021-07-09 | 2021-07-09 | Double-grounding maintenance protection device and grounding method for power transmission line |
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| CN113594791A true CN113594791A (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110776595.XA Withdrawn CN113594791A (en) | 2021-07-09 | 2021-07-09 | Double-grounding maintenance protection device and grounding method for power transmission line |
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| CN (1) | CN113594791A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116759893A (en) * | 2023-05-24 | 2023-09-15 | 南方电网调峰调频发电有限公司工程建设管理分公司 | Safety grounding device for distribution box |
| CN117526009A (en) * | 2024-01-08 | 2024-02-06 | 中建科工集团有限公司 | Station access equipment and access method for virtual power plant |
-
2021
- 2021-07-09 CN CN202110776595.XA patent/CN113594791A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116759893A (en) * | 2023-05-24 | 2023-09-15 | 南方电网调峰调频发电有限公司工程建设管理分公司 | Safety grounding device for distribution box |
| CN116759893B (en) * | 2023-05-24 | 2024-02-06 | 南方电网调峰调频发电有限公司工程建设管理分公司 | Safety grounding device for distribution box |
| CN117526009A (en) * | 2024-01-08 | 2024-02-06 | 中建科工集团有限公司 | Station access equipment and access method for virtual power plant |
| CN117526009B (en) * | 2024-01-08 | 2024-03-19 | 中建科工集团有限公司 | Station access equipment and access method for virtual power plant |
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