45results 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 an overhead bus contact protection switch device and a using method thereof, and belongs to the field of transformer substations, the overhead bus contact protection switch device comprises I bus protection equipment, II bus protection equipment, an HGIS contact switch body, a three-way assembly, a sleeve assembly and a connecting wire, and the I bus protection equipment and the II bus protection equipment share the HGIS contact switch body, the sleeve assembly and the connecting wire; compared with a conventional independent type two-bus protection device, the novel bus contact protection switch is designed in an integrated mode, a large amount of device cost and space resources are saved, the operation and maintenance cost is remarkably reduced, and the reliability of the device is improved.

The utility model discloses a grounding structure of a platform type transformer substation, which comprises a first-stage overhead platform ground screen, a second-stage overhead platform ground screen and a pile foundation grounding leading-down part, and is characterized in that the first-stage overhead platform ground screen is positioned above the second-stage overhead platform ground screen; the first-stage overhead platform ground screen and the second-stage overhead platform ground screen are connected with a rare earth alloy embedded in a wall through a structural beam, the first-stage overhead platform ground screen and the transformer substation are grounded through the pile foundation grounding downlead, and the second-stage overhead platform ground screen is supported through the structural beam of the transformer substation and a wall body. According to the utility model, grounding materials can be effectively saved, and a good voltage-sharing effect is achieved.

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 differentiated lightning protection grounding evaluation method, system and device and a storage medium. The method comprises the following steps: performing grid division on a region with a lightning protection insulation demand of a transformer substation; obtaining thunder and lightning meteorological data of the transformer substation and the soil resistivity of each grid; acquiring an equipment grounding mode of each grid; and setting weight factors according to the importance of the grid area, the soil resistivity and the equipment grounding mode, calculating to obtain the score of each grid, and judging the lightning protection grounding level of each grid according to the score. Lightning stroke risk points can be identified more accurately, and effective protection measures are taken, so that the lightning protection effect is improved.

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 discloses a heat dissipation type transformer neutral point grounding resistor cabinet, which specifically relates to the field of resistor cabinets, including a cabinet body, an inner cone is fixedly installed on one side of the cabinet body, a protective cover is fixedly installed on one side of the inner cone, a first motor is fixedly installed inside the protective cover, a heat dissipation fan is fixedly installed on the output end of the first motor, the heat dissipation fan is rotatably connected to the inner side of the protective cover, an air duct is connected to one side of the inner cone, a mounting pipe is fixedly installed on the top of the air duct, a filter cotton board is fixedly installed inside the mounting pipe, and the number of filter cotton boards is set to multiple. The utility model sets an air supply pipe and a branch pipe, and the heat dissipation wind entering the air supply pipe and the branch pipe eventually flows out from multiple side blowing pipes and upper blowing pipes, and the side blowing pipes on both sides face the two sides respectively, and the multiple upper blowing pipes face upward, so as to facilitate the hot air to be blown out from the inside of the cabinet body, improve the air flow, and thus accelerate the heat dissipation efficiency.

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 invention relates to a combined grounding and protection device for a modular voltage and power converter for converting a primary alternating voltage having one or more phases into a secondary voltage. The combined grounding and protection device comprises a plurality of input contacts and a plurality of output contacts, and the plurality of output contacts and the plurality of output contacts are conductively connected with the voltage input ends and the voltage output ends of the single modules of the converter. An input contact and an output contact connected to the same single module are connected to a variable resistor that becomes conductive when a droop voltage across the variable resistor exceeds a first threshold. An electrically non-conductive switching bar having a bridge contact can be moved from an operating position to a ground position. In the ground position, the bridge contact connects the input and output contacts of the single module to each other and to the ground terminal. In the working position, the same input and output contacts are not connected through the bridge contact and are not connected with the grounding terminal.

The utility model discloses a prefabricated substation equipped with a 60kV-level and above column type circuit breaker, which comprises a high-voltage chamber, a transformer and a low-voltage chamber, the column type circuit breaker, an isolating switch and a grounding terminal are fixed in the high-voltage chamber, the column type circuit breaker is provided with a first wiring terminal, the isolating switch is provided with an isolating knife, one end of the isolating knife is fixed, and the other end of the isolating knife is provided with a second wiring terminal. The isolation knife can rotate with the fixed end of the isolation knife as the center, the other end of the isolation knife can be connected with the first wiring terminal or the grounding terminal when the isolation knife rotates, and the voltage grade of the prefabricated substation can be improved under the condition that transportation is allowed, and the voltage grade can be 60 kV or above.

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 invention discloses a foundation-isolated indoor substation structure, comprising a cable layer raft foundation, a cable layer basement outer wall, a cable layer top plate, a cable layer frame column, a seismic isolation support, and a seismic isolation layer top plate; the cable layer basement outer wall and the cable layer frame column are respectively arranged on the cable layer raft foundation, the cable layer top plate is arranged on the top of the cable layer basement outer wall and the cable layer frame column, the seismic isolation support is respectively arranged on the top of the cable layer top plate at positions corresponding to the cable layer basement outer wall and the cable layer frame column, and the seismic isolation layer top plate is arranged on the top of the seismic isolation support. The upper structure and electrical equipment of the seismic isolation layer top plate of the present invention can be designed according to the reduced earthquake intensity, which greatly reduces the investment in civil engineering and the production cost of electrical equipment, and improves the safety of indoor substations in earthquakes.

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 discloses a transformer substation ground wire auxiliary installation device and a ground wire installation method, and relates to the technical field of ground wire construction, the transformer substation ground wire auxiliary installation device comprises a mobile vehicle body, the top end of the mobile vehicle body is provided with a lifting structure, the top end of the lifting structure is provided with a supporting structure, the supporting structure comprises a turntable, and the top end of the turntable is provided with a mobile structure; a moving structure is arranged at the top end of the rotating disc, a clamping structure is arranged on the moving structure, a ventilation structure is arranged at the top end of the rotating disc, a massage structure is arranged on the moving structure, the massage structure comprises a second fixing frame, a hammering structure is arranged on the second fixing frame, and a protection structure is arranged on one side of the moving structure. According to the utility model, the inclined or falling of the personnel due to instability during working is prevented, so that the occurrence of accidents is reduced, the working safety is improved, the correct working posture is kept, the fatigue and discomfort caused by unstable posture are reduced, the working efficiency and quality are improved, the labor load is reduced, and the working pressure is relieved.

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.