31results about "Substation earthing arrangements" patented technology

The application discloses a guiding grounding wire operation method, which comprises the following steps: a client sends position information to a server; the server calls first information stored in a memory; the server sends second information to the client and a transformer substation, and unlocks corresponding grounding wires; the client obtains third information; the client sends the third information to the server; and the server stores the third information in the memory after receiving the third information, and covers the first information. The server calculates the position of grounding wires and grounding operation steps, and then transmits the same to the client and the transformer substation, so that corresponding operation steps are displayed and corresponding grounding wires are unlocked, thereby playing a guiding role and avoiding misoperation.

The utility model provides a transformer substation grounding angle steel construction protection device, which belongs to the technical field of transformer substation construction and comprises a fixed cover, a movable shaft is rotatably arranged on the side wall of the fixed cover, a bevel adjusting seat is sleeved outside the movable shaft, and a movable cover corresponding to the fixed cover is slidably arranged on the side wall of the bevel adjusting seat. A positioning component is arranged on the side wall of the movable cover, one side of the grounding angle steel is embedded into the fixed cover, the other side of the grounding angle steel is sleeved with the movable cover, and the grounding angle steel is sleeved with the fixed cover and the fixed cover according to the break angle of the grounding angle steel, so that the adaptation degree with the grounding angle steel is improved, and the applicability with the grounding angle steel is guaranteed; after the fixed cover and the movable cover are arranged outside the two sides of the grounding angle steel in a sleeving mode, the grounding angle steel is fixed into the movable cover and the fixed cover, the grounding angle steel is prevented from falling off in the construction process, and therefore the construction quality is guaranteed.

Apparatus (1) for grounding a bay (10) of an electrical substation (100) comprising: - a first conductor element (2) electrically connectable to the bay (10); - a second conductor element (3) electrically connectable to ground; - a third conductor element (4) comprising a rod (43), extending between a first and a second end (41, 42), having an electrically conductive core (43a) and a stiffening coating (43b), said rod (43) being switchable between: - a first configuration in which the first and second end (41, 42) are respectively engaged with the first and second element (2, 3), - a second configuration in which the first end (41) is disengaged from the first element (2) and the second end (42) is engaged with the second element (3), - a third configuration in which the first and second end (41, 42) are respectively disengaged from the first and second element (2, 3) - kinematic members (5) configured to move the third element (4) with respect to the first and second element (2, 3) so as to switch the rod (43) between the first and second configuration; - hooking / unhooking members (7) switchable between a hooking configuration, in which they hook the second end (42) of the rod (43) to the second element (3) so as to retain it engaged with the latter when the rod (43) is in the first and second configuration, and an unhooking configuration, in which they unhook the second end (42) of the rod (43) from the second element (3) so as to allow the disengagement thereof from the element (3) and switch the rod from the second configuration to the third configuration.

The invention relates to a bus grounding switch interlocking system and a transformer substation power distribution system, and the system comprises a power transmission bus, a locking miniature bus, a voltage transformer cabinet, and a plurality of incoming and outgoing line circuit breaker cabinets, and the incoming and outgoing line circuit breaker cabinets and the voltage transformer cabinet are connected with the power transmission bus. And a first end of the locking miniature bus is connected with a power supply through a grounding switch of the voltage transformer cabinet, and a second end of the locking miniature bus is connected with each incoming and outgoing line circuit breaker cabinet and is used for performing interlocking control on each incoming and outgoing line circuit breaker cabinet. By laying the locking miniature bus on each electrical cabinet, the power supply interlocking control of each electrical cabinet is realized, the complexity of electrical interlocking wiring is reduced, and the safety and reliability in the operation process of a power system are ensured.

An electrical assembly comprises a grounding mechanism (54) and an electrical device (52), the grounding mechanism (54) including a support longitudinal member (56) and a switch contact member (58), the switch contact member (58) arranged in or on the support longitudinal member (56), the switch contact member (58) configured to be connected in use to ground, the electrical device (52) including an electrical terminal, wherein the support longitudinal member (56) is configured to be slidable between: a first position in which the switch contact member (58) is separated from the electrical terminal so that the switch contact member (58) is electrically disconnected from the electrical device (52); and a second position in which the switch contact member (58) is in contact with the electrical terminal so that the switch contact member (58) is electrically connected to the electrical device (52).

The utility model discloses a transformer station wiring grounding protection mechanism comprising a housing, the top end of the housing is provided with a first handle, one side of the housing is provided with a plurality of clamping rings, the clamping rings are internally provided with a connecting assembly, the connecting assembly is composed of a second connecting rod, a third connecting rod and a fourth connecting rod, and the second connecting rod is connected with the third connecting rod. A connecting frame is arranged at one end of the fourth connecting rod, a plurality of arc-shaped clamping plates are arranged in the connecting frame, and one end of the connecting assembly is connected with a first cable. The transformer substation wiring grounding protection mechanism is reasonable in structure, cables can be rapidly recycled, a large amount of time is saved, the cables are effectively stored and arranged, the grounding protection mechanism can be stretched and adjusted, operation of related personnel is more convenient, life safety of the related personnel is prevented from being damaged, and the transformer substation wiring grounding protection mechanism is worthy of popularization and application. The grounding protection mechanism can be buffered and protected, the internal structure of the grounding protection mechanism is prevented from being damaged, and the grounding protection mechanism is worthy of popularization.

The invention discloses a grounding device adaptive to a high-resistance soil condition and a construction method thereof, and relates to the technical field of transformer substation grounding. The grounding device comprises a copper bar grounding grid and a plurality of anti-floating anchor rods, wherein an anchor rod main rib is fixed in each anti-floating anchor rod; the top of the anchor rod main rib is welded with a first grounding body at the inner side grid intersection of the copper bar grounding grid through round steel, and the bottom of the anchor rod main rib is inserted into soil; a raft plate is arranged on the copper bar grounding grid, and a second grounding body is additionally arranged at the intersection of grids on the outer side of the copper bar grounding grid and inserted into soil. The technical problems that the grounding use effect and stability are poor due to the fact that manual grounding bodies are adopted at the grid intersections on the outer side and the grid intersections on the inner side, and the number of the manual grounding bodies needing to be arranged is too large are solved.

The invention discloses a rail transit visual grounding device inter-station locking system and a method thereof, and belongs to the technical field of rail transit, the rail transit visual grounding device inter-station locking system comprises a field-level equipment layer, a station-level management layer and a central management layer; the field-level equipment layer, the station-level management layer and the central management layer are sequentially connected through the Ethernet; the field-level equipment layer comprises a visual grounding device arranged in a traction substation; the station-level management layer comprises a monitoring host arranged in a station monitoring room; the central management layer comprises a monitoring master station arranged in an OCC dispatching room. On the basis that hardware cost is not increased, mutual locking between the visual grounding device and the adjacent station networking separation and cross-zone separation is achieved, electrified grounding of a contact network and power transmission with a grounding wire are prevented, safety of maintenance personnel and equipment is guaranteed, and the operation and maintenance level of rail transit power supply is improved.

The utility model discloses an insulation grounding device for power substation construction, which comprises an outer cylinder, a grounding column is inserted in the bottom of an inner cavity of the outer cylinder, a conductive threaded column is rotatably arranged at the top of the grounding column, a top cover is screwed at the top of the outer cylinder, a rotatable Z-shaped rocker is arranged in the center of the top of the top cover, and a conductive threaded column is rotatably arranged at the top of the rocker. One end of the top cover is connected with the conductive threaded column, the other end of the top cover is movably inserted, positioning screw holes are formed in the circumference of the top of the top cover, and a cover plate communicated with an inner cavity of the outer cylinder is inserted into the outer wall of the outer cylinder. According to the electric wire winding device, the rocker is used for driving the conductive threaded column to rotate, so that an electric wire can be gradually wound upwards along the threaded guide groove of the conductive threaded column, the winding regularity of the electric wire is effectively guaranteed, and the electric wire is prevented from being wound disorderly after being wound; the electric wire wound in the outer cylinder can be protected, and short circuit caused by external influence is prevented.

The invention discloses a transformer substation grounding parameter determination method considering maintenance cost and a terminal. The method comprises the following steps: acquiring a station location feature, a standard electrical index and a topological parameter of a transformer substation grounding grid; according to the site features, the standard electrical indexes and the topological parameters, constructing a grounding grid parameter determination model with minimization of the sum of the construction cost and the maintenance cost of the transformer substation grounding grid as a target function; constructing performance constraint conditions according to the standard electrical indexes and the topological parameters; and solving the grounding grid parameter determination model based on the performance constraint condition, and determining an optimal numerical value of the topological parameter according to a solving result. The method can effectively balance the input cost and reliability of the transformer substation grounding grid design.

The application discloses a grounding device suitable for high-resistance soil conditions and a construction method thereof, and relates to the technical field of grounding of transformer substations. The grounding device comprises a copper bar grounding net and a plurality of anti-floating anchor rods, and an anchor rod main reinforcement is fixed in each of the anti-floating anchor rods; the top of the anchor rod main reinforcement is welded with a first grounding body at the intersection of the inner side grid of the copper bar grounding net through a round steel, and the bottom of the anchor rod main reinforcement is inserted into soil; a raft is arranged on the copper bar grounding net, a second grounding body is additionally arranged at the intersection of the outer side grid of the copper bar grounding net, and the second grounding body is inserted into soil. The application solves the technical problems that the poor grounding effect and stability caused by the artificial grounding body used at the intersection of the outer side grid and the intersection of the inner side grid, and the excessive number of artificial grounding bodies required to be arranged.

The application relates to the technical field of power safety, and provides a substation grounding method and related equipment. The substation grounding management system comprises an anti-misoperation host, a supervision terminal device, a cloud platform and a plurality of grounding devices. The substation grounding method comprises the following steps: the supervision terminal device sends a target ground wire operation request based on a target ground wire operation order to the anti-misoperation host through the cloud platform, and displays current standard operation step information corresponding to the target ground wire operation order; a target grounding device corresponding to the target ground wire operation order in the plurality of grounding devices acquires actual operation step information of a current step operation, and sends the actual operation step information to the anti-misoperation host and / or the supervision terminal device through the cloud platform; the actual operation step information is checked by the anti-misoperation host and / or the supervision terminal device to obtain a target checking result, and the next operation instruction is processed according to the target checking result.

The invention provides a transformer substation grounding device and method, and belongs to the technical field of electrical engineering, the transformer substation grounding device comprises a protection cover and a conducting rod, fixing blocks are arranged on the two sides of the bottom in the protection cover, and a lifting mechanism is arranged in the protection cover; the lifting mechanism comprises two ball screws rotationally connected to the fixing block, two sliding rods slidably connected to the ball screws and rotating pieces connected with the ball screws. The conducting rod is located between the two sliding rods; the protection cover further comprises a power connection assembly, and the power connection assembly comprises a power connection box and a conductive wire which is connected with the power connection box, penetrates into the protection cover and is connected with the conductive rod. The conductive rod can be protected through the protection cover, potential safety hazards can be reduced, meanwhile, through the lifting mechanism in the protection cover, lifting of the conductive rod can be achieved in a time-saving and labor-saving mode, ground breaking and grounding can be stably completed in a labor-saving mode, and therefore the grounding stability of the electrical work grounding device is guaranteed.

The utility model relates to the technical field of power transmission and transformation, in particular to a grounding device of power transmission and transformation equipment, which solves the problems that a grounding wire is easily rubbed and aged on the ground after being connected to the ground, so that a circuit is abraded, and a contact person is easy to get an electric shock. Through arrangement of a telescopic rod, a moving plate, a spring B, a spring A, a rubber plate, a limiting plate and a notch B, the spring B is in a compressed state to extrude the spring A on the side not provided with the spring B, the rubber plates move outwards to clamp a grounding wire between the two sets of rubber plates, and when the grounding wire needs to be clamped and connected, the applied extrusion force is canceled to move the moving plate to one side of the grounding wire, so that the grounding wire is clamped and connected. The connecting plate moves towards the inner side until the connecting plate corresponds to the position of the notch B, the connecting plate is in clamped connection with the notch B, the spring B recovers deformation to push the connecting plate to move upwards in the notch B, the limiting plate is driven to move upwards, the limiting plate does not make contact with the rubber plate on the side and does not block the rubber plate, and the rubber plate is in clamped connection with the grounding wire for protection.

The utility model relates to the technical field of grounding devices, in particular to a prefabricated grounding body based on a corrosion-resistant grounding device, which comprises a grounding conductor, a lead and a pouring module, one end of the grounding conductor is connected with an equipment body, and the other end of the grounding conductor is connected with the lead; the grounding conductor is used for connecting equipment and the wire, the wire is used for discharging and voltage equalizing, and the pouring module is used for fixing and sealing the joint of the grounding conductor and the wire; the wire comprises a wire core and a coating layer. The wrapping layer wraps the outer side of the wire core. According to the utility model, the grounding downlead which can be prefabricated is coated by the conductive polyolefin, so that the grounding body has good anti-corrosion performance, and internal metal materials are effectively protected; connection is completed in a factory, the flat steel conducts equipment current, the wire core discharges current and equalizes voltage, and the coating layer and the sealant are resistant to corrosion. During use, prefabrication is performed firstly, then field installation is performed, and efficient and stable grounding is realized through a prefabricated structure and a reasonable connection mode.

The utility model discloses a photovoltaic power station booster station grounding device, which relates to the technical field of photovoltaic power station booster station grounding, and comprises a grounding rod, a protective barrel and a top cover, the protective barrel is fixedly connected with the ground through a ground insertion assembly, and the top cover covers the top end of the protective barrel. The top cover is detachably connected with the protective barrel through a clamping assembly; the top of the grounding rod is located in the protection barrel, and the bottom of the grounding rod penetrates through a bottom plate of the protection barrel in a sliding mode and is inserted into the ground; a protective cover is arranged at the bottom end of the top cover, a gap is formed between the inner wall of the protective cover and the outer wall of the protective barrel, a sealing assembly is fixed to the barrel wall, located in an inner cavity of the protective cover, of the protective barrel, and a grounding wire penetrates through the sealing assembly and is electrically connected with the top of the grounding rod. The photovoltaic power station booster station grounding device can overcome the defect that the joint of the grounding device and the grounding wire is exposed in the external environment and is easy to be corroded by rainwater.

The invention illustrates and claims a combined earthing and protective device for a voltage and power converter of modular design for converting a primary AC voltage with one or more phases to a secondary voltage. The combined earthing and protective device comprises input contacts and output contacts which are conductively connected to voltage inputs and voltage outputs of individual modules of the converter. The input and output contacts which are connected to the same individual module are connected to a varistor which becomes conducting when the voltage dropped across the varistor exceeds a first threshold value. A nonconductive switching strip with bridge contacts can be moved from an operating position to an earthing position. In the earthing position, the bridge contacts connect the input and output contacts of the individual modules to one another and to an earth connection. In the operating position, the same input and output contacts are not connected by the bridge contacts and not to the earth connection either.

The present invention relates to an apparatus 202 and method for monitoring a mobile grounding device 102. The apparatus 202 comprises a first pole 204 for connection to the mobile grounding device 102, a second pole 206 for connection to a reference probe 208, and a control device. The control device is configured to sense an electrical resistance between the first pole 204 and the second pole 206 and compare it with a threshold value. The control device outputs a status signal based on the comparison between the electrical resistance and the threshold value.

The utility model provides a lightning protection structure and an assembly type steel structure transformer substation, and solves the problems that the lightning protection structure of the assembly type steel structure transformer substation has potential safety hazards and is complex in structure and high in cost. The lightning protection structure comprises a metal coping, a flexible conductor connecting piece and a downlead assembly, and the metal coping is fixed to the top of an outer wall and used for intercepting lightning current; the number of the metal pressing tops is more than two, the flexible conductor connecting pieces are arranged in a deformable mode under the action of external force, the adjacent metal pressing tops are fixedly connected through the flexible conductor connecting pieces, and therefore all the metal pressing tops are electrically connected. The downlead assembly is fixed on the inner side of the outer wall, the upper end of the downlead assembly is fixed on at least one metal coping, and the lower end of the downlead assembly is electrically connected with the grounding device; the metal coping at the top of the outer wall serves as a lightning arrester to intercept lightning current, all the metal coping are connected through the flexible conductor connecting piece, all the metal coping are electrically connected with the grounding device through the down lead assembly, and the safety performance is improved.

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.

The present application provides a device for locking a ground wire head and a ground wire management locking device. The device includes: a movable component, including a telescopic pin, on the outer surface of which there is a locking groove, a first part of the locking groove extends circumferentially on the outer surface of the telescopic pin, and a second part of the locking groove extends axially on the outer surface of the telescopic pin; an automatic unlocking component, the push rod enters the first part of the locking groove under the action of the electromagnet so that the telescopic pin is in a locked state, and the push rod disengages from the first part of the locking groove under the action of the electromagnet so that the telescopic pin is in a free telescopic state; a manual unlocking component, when the automatic unlocking component is in the locked state, the rotating disk rotates to drive the telescopic pin to rotate around the axis of the telescopic pin, so that the telescopic pin is switched from the locked state to the free telescopic state. The technical solution of the present application decouples the manual unlocking from the electrolytic unlocking of the electromagnet, achieving the purpose of multiple control schemes for the ground wire head.

Shore power connection (20) for installation on a ship (10) comprising: at least one high-voltage cabinet (21); and at least one earthing switch (100) wherein the earthing switch (100) is configured to switch from an open state to a closed state in less than 4 ms.

This invention discloses a new energy prefabricated substation with a protection unit for use in substations. By installing a protection unit inside the insulating base, the insulation performance of the insulating base can be actively monitored, solving the problem in existing technologies where it is difficult to detect the deterioration of the insulating base's performance in a timely manner, leading to significant safety hazards. With the installation of heat transfer columns and their internal re-grounding units, when the insulating base has good insulation performance, heat can be conducted downwards, reducing the accumulation of heat on the insulating base and effectively slowing down the rate of insulation performance degradation. At the same time, the insulation performance of the insulating base can be effectively monitored. When its insulation deteriorates and its relative leakage current is high, the selective conductive pin can be connected to conduct this portion of the current directly to the ground, re-grounding the substation and effectively preventing excessive current accumulation inside the insulating base, thereby significantly reducing safety hazards.

The invention relates to a 220kV prefabricated cabin type transformer substation which comprises a three-dimensional multi-layer prefabricated cabin and a supporting foundation, the prefabricated cabin comprises a first-layer prefabricated cabin and a second-layer outdoor platform, primary equipment and auxiliary equipment are arranged in the first-layer prefabricated cabin, and the second-layer outdoor platform is located above the first-layer prefabricated cabin. High-voltage equipment and a second-layer prefabricated cabin are arranged on the second-layer outdoor platform, secondary equipment is arranged in the second-layer prefabricated cabin, the supporting foundation comprises a prefabricated independent foundation body and a prefabricated cross beam, the prefabricated independent foundation body is vertically arranged in the foundation pit, and the prefabricated cross beam is horizontally fixed to the upper portion of the prefabricated independent foundation body and used for supporting the prefabricated cabin; compared with a traditional distributed prefabricated cabin layout, the scheme is beneficial for reducing the total plane occupied area, the land acquisition cost is reduced, only foundation node pouring, cabin body hoisting and splicing and a small amount of external wiring need to be conducted on site, and the construction period is shortened.

To provide a circuit breaker test changeover switch, a lead wire connection tool, a circuit breaker test system, and a circuit breaker test method that enables stable circuit breaker testing using a grounding device connected to a main circuit.SOLUTION: A changeover switch 10 includes grounding device connecting means 13 connected to a main circuit and to which a grounding device for grounding the main circuit can be detachably connected, tester connecting means 14 connected to the grounding device connecting means 13 via a lead wire 16 and to which a main circuit lead wire 4a connected to a circuit breaker tester can be detachably connected, a switch body 12 whose primary side terminal is connected to the grounding device connecting means 13 via a lead wire 17 and can be switched between an on state and an open state, and a grounding terminal 15 connected to the secondary side terminal of the switch body 12 via a lead wire 18 and to which a grounding lead wire 3 is detachably connected.SELECTED DRAWING: Figure 3

The present application discloses a substation frame, which includes: a support assembly, including at least two support columns arranged at intervals, wherein the at least two support columns include two side support columns located on both sides; a crossbeam assembly, including a crossbeam erected between every two adjacent support columns; and a side hanging wire assembly, wherein the side hanging wire assembly is arranged on at least one of the side support columns and is located on the side of the side support column away from the crossbeam. By arranging the hanging wire assembly on the side of the side support column away from the crossbeam, a phase conductor can be arranged on the hanging wire assembly, thereby expanding the number of phases connected by the conductor, reducing the floor space, reducing the use of crossbeams and support columns, reducing the use of steel and basic materials, and reducing construction costs.

The invention discloses a new energy box-type substation with a protection unit, which is applied to the related field of substations, and can actively monitor the insulation performance of an insulation base by arranging the protection unit in the insulation base, so as to solve the problem that in the prior art, after the performance of the insulation base is reduced, it is difficult to discover timely; therefore, a relatively large potential safety hazard is caused. Due to the arrangement of the heat transfer column and the re-grounding unit in the heat transfer column, when the insulation performance of the insulation base is good, heat conduction can be conducted downwards, heat accumulation on the insulation base is reduced, then the attenuation rate of the insulation performance of the insulation base is effectively reduced, and meanwhile the insulation performance of the insulation base can be effectively monitored; when the relative electric leakage amount is large, the selection conductive needle can be switched on, the current of the part can be directly conducted to the ground, the transformer substation is grounded again, excessive current is effectively prevented from being gathered in the insulating base, and then potential safety hazards are greatly reduced.

The invention provides a multi-bundle stranded drainage grounding wire and electrical equipment. The grounding wire comprises at least two strands of mutually independent conductive core bodies, the insulating protective layer is coated outside each conductive core body; the anti-abrasion binding layer is bound on the plurality of strands of conductive core bodies coated with the insulating protective layers and is used for enabling the plurality of strands of conductive core bodies to form a bundled wire; the two ends of the clustered wire are connected with a first electrode contact and a second electrode contact respectively, the first electrode contact is used for being connected with equipment to be grounded or a circuit to be grounded, and the second electrode contact is used for being connected with a grounding electrode or a grounding switch; by adopting a multi-strand conductive core body parallel connection structure, electrical path redundancy is formed, and the risk of electric shock or equipment damage is reduced; by arranging the independent insulating protective layer, short circuit caused by friction and extrusion between the cores is effectively prevented, the multiple strands of conductive cores are bundled into a whole through the anti-abrasion bundling layer, arrangement and retraction are facilitated, and mechanical stress such as pulling and friction can be remarkably resisted.

The present application relates to the technical field of lightning protection of power system, and aims to solve the problems that the soil resistivity is high and unevenly distributed in high-altitude mountainous areas, the traditional grounding grid design is based on a uniform soil model, which leads to a large deviation between the calculated value and the measured value of grounding resistance, the grounding system has insufficient discharge capacity and cannot meet the lightning protection safety threshold requirement, the traditional grounding system is not suitable for the special lightning characteristics of high-altitude mountainous areas, and a large amount of resistance-reducing agents are used to damage the environment, and provides a lightning protection design method for grounding system of prefabricated cabin substation in high-altitude mountainous areas, which comprises the following steps: step 1, data collection and summarization; step 2, modeling and visual analysis of the magnetic field in the prefabricated cabin; step 3, multi-layer soil modeling and performance index calculation; step 4, establishment of a comprehensive evaluation system, multi-dimensional evaluation of the design scheme, and obtaining of a prefabricated cabin lightning protection green safety design index. The present application improves the scientificity and safety of the lightning protection design of the prefabricated cabin through comprehensive data collection, accurate modeling analysis and multi-dimensional evaluation, and takes into account the environmental protection requirement.