20results 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.

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 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 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 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.

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.

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.

Intelligent grounding clamp with pressure sensing function, comprising a mounting cylinder (1), characterized in that the mounting cylinder (1) is surrounded externally by a mounting sleeve (20), wherein a third screw (28) is attached between the mounting sleeve (20) and the mounting cylinder (1), wherein a connecting block (2) is fixedly connected to the upper end of the mounting sleeve (20), wherein a mounting cover (4) is fixedly attached to the left side of the connecting block (2), wherein the inner wall of the mounting cover (4) is slidably connected to an insertion piece (18), wherein a mounting clamp (5) is fixedly mounted at the upper end of the insertion piece (18), wherein a clamping arrangement for holding the cable is attached to the mounting cylinder (1), and wherein a test arrangement for pressure sensing is installed on the mounting clamp (5);wherein the test arrangement comprises two groups of mounting covers (3), wherein the two groups of mounting covers (3) are each fixedly attached to the front and rear sides of the mounting clamp (5), wherein the inner wall of the mounting cover (3) is fixedly equipped with a pressure sensor (23), wherein the base of the pressure sensor (23) is fixedly connected to a connecting rod (25), wherein the connecting rod (25) is slidably guided through the mounting cover (3), and wherein a pressure block (26) is fixedly attached to the base of the connecting rod (25).