42 results about "Isolated ground" patented technology

The application discloses a three-position mechanism position signal operating mechanism and an isolated grounding switch. The mechanism comprises a top plate and a bottom plate, the top plate is provided with a second position signal device, and the bottom plate is provided with a first position signal device; a transmission device is connected with a driving device at one end and connected with the first position signal device and the second position signal device at the other end; after the operating mechanism receives an operation instruction, the driving device drives the transmission device to drive the first position signal device and the second position signal device to displace respectively, and double signal confirmation is performed. The double signal confirmation mechanism effectively avoids the possible misjudgment of a single signal, improves the accuracy of the position signal, and ensures that the background control system and the protection equipment can perform logical judgment based on accurate data.

This invention belongs to the field of electromagnetic interference (EMI) suppression technology, and proposes an EMI suppression device using isolated grounding. It includes shielded modules that act as interference sources or receivers for each other, and a shielded transmission circuit for signal transmission. The shielded modules include camera mechanisms, modules that easily generate high-frequency signals, and modules that easily generate large currents. The shielded transmission circuit includes transmission cables connecting each shielded module. This device is simple, easy to implement, and easy to operate. It mainly utilizes the conductivity of metallic materials to transmit external electromagnetic interference, which is easily received by the shielded modules and the transmission circuit cables, to the ground through a conductive layer. Simultaneously, the transmitted circuit signals are also protected, thus preventing electromagnetic interference to the shielded modules and the transmission circuit cables, allowing the equipment to maintain normal operation.

The invention provides a convenient IGBT protection device, and belongs to the field of low-voltage frequency conversion / inversion, the convenient IGBT protection device comprises an IGBT, a radiator, a first protection device and a second protection device, the first side of the IGBT is fixed through a busbar bolt and is electrically connected with a laminated busbar, the second side of the IGBT is fixed through a busbar bolt and is electrically connected with a fixed busbar, and the second side of the IGBT is electrically connected with the laminated busbar. The first side and the second side of the IGBT are fixedly connected with the radiator through grounding bolts respectively, a first protection device is installed at the position of the grounding bolt at the first side of the IGBT in a limiting mode, a second protection device is installed at the position of the grounding bolt at the second side of the IGBT in a limiting mode, and the first protection device and the second protection device can completely wrap and isolate the grounding bolts. According to the device, the creepage distance between the terminals and between the terminals and the fixing screws can be effectively increased, the insulation performance is improved, and the creepage distance between the terminals is effectively increased due to the design that the partition plates are additionally arranged between the DCP / DCN terminals. The device is convenient to install and maintain, and the maintenance and repair efficiency of the IGBT is greatly improved.

The invention discloses a gas tank device of an environment-friendly gas-filled switch cabinet, and relates to the technical field of intelligent power grid power transformation and high-voltage power transmission and distribution, the gas tank device comprises a top expansion bus gas chamber (23) formed by welding stainless steel plates, the top expansion bus gas chamber (23) is of a full-sealed structure, and environment-friendly gas with the pressure not exceeding 0.05 MPa is filled into a full-sealed gas filling device (25); a high-voltage live part is packaged in the full-sealed inflation device (25) and comprises a three-station isolating / grounding switch (13), a vacuum circuit breaker (15), a bus of a copper bar structure and a high-voltage live conductor insulating sleeve. The conductors in the air chamber equipment are subjected to electric field optimization design, silver plating and polishing, the insulation performance of a primary part can be ensured, and the reliability and the stability of the air chamber equipment are equivalent to those of sulfur hexafluoride inflation equipment.

The utility model relates to a compact sleeve retraction type composite combined electric appliance for a 145kV mobile transformer. The compact sleeve retraction type composite combined electric appliance is characterized by comprising a three-phase tank type circuit breaker, a three-pole three-station isolation grounding switch, an elbow bus, a current transformer, an airtight retraction rotating device and a composite sleeve, according to the 145kV composite combined electric appliance, an airtight retraction rotating device is designed, so that the casing pipe of the product is rotated and forms are switched under the condition that gas in the product is not leaked, and the maximum insulation distance size is ensured; a transportation form and an operation form can be switched; the whole structure is designed in a non-over-limit width range, the whole width is smaller than 2.55 m, moving and carrying are convenient, and meanwhile the transportation safety is improved.

A gas insulated switch device comprises a first spacing unit and a second spacing unit, the first spacing unit and the second spacing unit respectively comprise a first accommodating shell, a second accommodating shell and a third accommodating shell which correspond to each other, and the first accommodating shell, the second accommodating shell and the third accommodating shell have at least partially identical structures; the first accommodating shell comprises a circuit breaker control mechanism, the second accommodating shell is filled with insulating gas and comprises a circuit breaker and an isolation grounding switch, and the third accommodating shell comprises a cable terminal used for being connected with a cable; the first accommodating shell is arranged above the second accommodating shell, the third accommodating shell is adjacent to the second accommodating shell and is arranged on at least one side of the second accommodating shell, and the first spacing unit is detachably connected with the second spacing unit. The design is beneficial to installation and maintenance, parts can be exchanged, universally used and reused, meanwhile, design verification and production manufacturing are facilitated, and the research and development and production cost is reduced.

The invention relates to the technical field of power equipment, and discloses an electricity testing locking system and a control method and a state prompting method thereof, which are used for still keeping the electricity testing locking of an isolation grounding device under the condition of power loss of a secondary power supply. An electricity testing locking controller in the electricity testing locking system is provided with a super capacitor which is charged when a secondary power supply works normally and responds to triggering of a power supply awakening button when the secondary power supply loses power, so that the super capacitor provides temporary electric energy for the electricity testing locking controller through an internal electrical loop; the super capacitor supplies power to the power supply module through a second normally open contact and a third normally open contact of the relay in the discharge control loop. The electricity verification locking controller is provided with a second open contact connected to the isolation grounding device switch unlocking loop. Therefore, unlocking and locking control is carried out on the isolation grounding device based on an unlocking and locking instruction output by the electricity testing and locking controller after electricity testing of the contact network.

The invention provides a land flexible direct current converter station direct current field arrangement system and an operation control method, and relates to the technical field of flexible direct current transmission, and the system comprises a bridge arm reactor, an isolation grounding switch, a direct current measuring device, a direct current voltage measuring device, a direct current lightning arrester, a wall bushing and an energy consumption device which are conventionally configured in a land converter station direct current field. The devices are connected through tubular buses and flexible conductors. According to the invention, a double-spliced direct current submarine cable scheme is adopted for high-capacity offshore wind power flexible direct current transmission, on the basis of conventional direct current field configuration, by adding three isolation grounding switches, no power failure can be realized when any two direct current submarine cables are in an outgoing line fault, and the reliability of high-capacity offshore wind power flexible direct current transmission is greatly improved.

The invention relates to the technical field of electrical switch equipment, and discloses an electrical cabinet and an integrated three-position isolation grounding switch mechanism thereof. In the switch mechanism, an isolation operation assembly and a grounding operation assembly are symmetrically arranged on a frame structure, each operation assembly comprises an operation shaft, an input transmission part, an output transmission part and a middle transmission part, and a first pin is arranged on the middle transmission part. The two ends of the spring are connected with the first pins on the two sides respectively, when the operation shaft on any side rotates, the corresponding first pin moves to enable the spring to store energy, and when the first pins on the two sides and the axis of the spring are collinear and then cross a dead point, the spring releases energy to drive the corresponding output transmission piece to rotate rapidly. According to the invention, two functions of isolation and grounding are simultaneously realized in a single module through the symmetrical double-operation assembly and the over-dead-point quick energy release mechanism, and the device has the advantages of compact structure, quick and reliable action, good symmetry and perfect safety protection.

The invention relates to the technical field of switch equipment, in particular to a three-phase common box type isolation grounding switch and a GIS (Gas Insulated Switchgear). The three-phase common box type isolation grounding switch comprises a three-way shell, two opposite openings of the three-way shell are distributed in the first direction, a middle phase and a side phase which are arranged in a triangular mode are arranged between the two opposite openings, and each of the middle phase and the side phase comprises a phase conductor and an isolation static contact. A moving contact seat is further arranged on one side of the middle phase and the side phase in the second direction in the three-way shell, the second direction is perpendicular to the first direction, the moving contact seat and the first direction form a set included angle and are obliquely arranged, a direct-acting moving contact is arranged in the moving contact seat, the middle phase is located on one side, close to the moving contact, of the side phase, and the second direction is perpendicular to the first direction. The conductor of the middle phase is provided with a bending section which is recessed towards the space between the two side phases, and the part, corresponding to the corresponding moving contact seat, of the bending section in the second direction is far away from the moving contact seat by being recessed. According to the invention, the middle phase is arranged close to the moving contact seat, so that the overall size is reduced to the maximum extent.

The invention discloses an isolation grounding switch structure for a transformer substation. The isolation grounding switch structure comprises a worm, a limiting ring, an outer ring sheath, a grounding knife transmission buckle and a knife transmission buckle. The relative rotation of the outer ring sheath is linked with the worm to rotate through the adaptive connection of the ground knife transmission buckle and the ground knife tooth groove or the adaptive connection of the knife transmission buckle and the knife tooth groove, so as to drive the knife and the ground knife operation body to rotate. The position of the limiting ring in the outer ring sheath is changed through synchronous linkage of relative rotation of the outer ring sheath, and the limiting ring is linked to change the grounding knife transmission buckle to move away from the grounding knife tooth groove step by step or change the disconnecting link transmission buckle to move away from the disconnecting link tooth groove step by step, so that the grounding knife transmission buckle or the disconnecting link transmission buckle is separated from the worm. According to the isolation grounding switch structure for the transformer substation, the operation of the disconnecting link and the operation of the grounding switch can be separated, and misoperation is avoided; the structure is simple, repair and maintenance are easy, and product cost is controlled.

The invention discloses a long-line high-voltage cable metal isolation grounding joint and an installation method. The grounding joint comprises a grounding metal sleeve shell, a lead sealing structure and a multifunctional wrapping layer. The grounding metal sleeve shell comprises two grounding semicircular shells which sleeve the outer side of an exposed cable metal layer, the two grounding semicircular shells are fixedly connected through a locking structure, and one of the grounding semicircular shells is provided with a grounding leading-out terminal used for being connected with a grounding cable; the two groups of lead sealing structures respectively wrap the two end parts of the grounding semicircular shell, and the lead sealing structures are simultaneously and fixedly connected with the end parts of the grounding semicircular shell and the cable metal layers at the corresponding positions; and the multifunctional wrapping layer wraps the outer sides of the grounding semicircular shell, the lead sealing structure and the exposed cable metal layer. The invention has the advantages of good connection reliability, good sealing performance, small occupied space and the like.

The application relates to the field of switch devices, in particular to a main bus conductor, a main bus conductor assembly and an isolated grounding switch. The main bus conductor comprises a conductor section, the two ends of the conductor section are respectively provided with a first electric connection structure and a second electric connection structure, and a groove extending along the length direction of the conductor section is arranged on the conductor section. The application improves the main bus conductor in the prior art, the groove is arranged on the conductor section along the length direction of the conductor section, which is beneficial to reducing the use of materials and facilitating weight reduction; since the conductor surface mainly plays a role in current conduction when the conductor transmits alternating current, the central part of the conductor section does not contain a part with low electric conduction efficiency, which is beneficial to improving the utilization rate of the materials; in addition, the conductor surface area and the heat dissipation area are increased due to the groove, which is beneficial to timely heat dissipation of the conductor during the working process, therefore, the problems of the main bus conductor in the prior art, such as large weight, low material utilization rate and poor heat dissipation, are solved.

The application relates to a gas-enclosed switch device system, which comprises a mounting base plate, a total isolation grounding switch module mounted on the mounting base plate, an incoming line isolation grounding switch module mounted on a first connecting hole and electrically connected with the total isolation grounding switch module, and an outgoing line isolation grounding switch module mounted on a second connecting hole and electrically connected with the total isolation grounding switch module. The total isolation grounding switch module is provided with the first connecting hole and the second connecting hole which are arranged in the same direction and are spaced from top to bottom. The incoming line isolation grounding switch module has an incoming line interface which is different from the direction of the first connecting hole. The outgoing line isolation grounding switch module has an outgoing line interface which is different from the direction of the second connecting hole. Compared with a traditional longitudinal arrangement scheme, the device is miniaturized, the problem of the too large longitudinal size of an offshore wind power layout is solved, intensive and modular design is realized, and the special requirements of the offshore wind power layout on the gas-insulated switch device are met.

The invention relates to the technical field of isolating switches, in particular to a three-station isolating grounding switch for a GIS (gas insulated switchgear), which comprises an isolating shell, a static contact seat and a grounding contact seat which are matched with a movable contact seat are arranged in the isolating shell, a round hole and a notch communicated with the round hole are formed in the front end of the movable contact seat, and a sliding block elastically slides in the notch; the outer wall of the contact end of the contact finger is slidably sleeved with a clamping ring, the rear end of the clamping ring is provided with a positioning rod, the end of the positioning rod elastically slides in the circular hole in a matched mode, the clamping ring makes contact with the end of the inner cavity of the static contact base before the contact finger, and when the clamping ring and the contact finger are in a closing state attached to the end of the inner cavity of the static contact base, the positioning rod extrudes the outer wall of the sliding block to abut against the inner wall of the static contact base. Through the cooperation of the clamping ring and the sliding block, the clamping ring is firstly contacted with the static contact seat in the switching-on process, mechanical friction and scraping caused by axis deviation between the contact finger and the inner wall of the static contact seat are avoided, the completeness and smoothness of the surface of the contact are protected, and the centering deviation is actively corrected through the radial extension of the sliding block.

The invention provides a double-fracture isolation grounding switch, and belongs to the field of circuit breakers. The double-fracture isolation grounding switch comprises a first moving contact, a second moving contact and a gear transmission mechanism, the gear transmission mechanism comprises a transmission shaft, a first rack, a second rack, a first gear and a second gear, the second rack comprises a rack main body and a reversing matching body, and the rack main body comprises a toothed section and a toothless section. And after the second moving contact is opened, the second gear is separated from the toothed section and corresponds to the toothless section, the second gear comprises a gear main body and a reversing shifting body located at the axial end part of the gear main body, and the reversing shifting body is used for shifting the reversing matching body to enable the toothed section to be meshed with the gear main body again. According to the double-fracture isolation grounding switch, the second moving contact can stay in situ in the grounding closing process of the first moving contact, the overall size of the double-fracture isolation grounding switch can be reduced, and the double-fracture isolation grounding switch can be used under the condition that the GIS equipment interval size is limited.

The invention discloses a combined shielding structure and an isolation grounding switch, and the combined shielding structure comprises a resistor outer shield and a resistor inner shield. The resistor outer shield is positioned at one end of the resistor and is used for shielding an electric field of a resistor mounting part and balancing a fracture electric field; and the resistor inner shield is mounted at one end, close to the moving contact, of the resistor outer shield, and is used for forming an arc path with the moving contact when a fault occurs, and introducing fault current into a resistor loop. By using the shielding structure in the isolation grounding switch, 'no-load no-input and on-load automatic input 'of a resistor loop is realized through a gap between a moving contact and a resistor inner shield, so that the mechanical transmission structure and fracture design of the isolation switch with the closing resistor are greatly simplified; therefore, the overall size, the manufacturing complexity and the production cost of the product are reduced.

The present invention increases an area occupied by a first circuit and a second circuit, while ensuring isolation between the first circuit and the second circuit. A ground electrode (3) is disposed on a second main surface (102) of a mounting substrate (1), and is located between the second main surface (102) of the mounting substrate (1) and an IC chip (2). The IC chip (2) has a first circuit (21), a second circuit (22), a boundary region (B1), and a ground terminal (G1). The boundary region (B1) is a region between the first circuit (21) and the second circuit (22). The ground terminal (G1) overlaps a portion of the boundary region (B1) when viewed in plan view from a thickness direction of the mounting substrate (1), and is connected to the ground electrode (3). The ground electrode (3) overlaps the boundary region (B1) between the first circuit (21) and the second circuit (22) when viewed in plan view from the thickness direction of the mounting substrate (1).

The invention discloses a valve area grounding fault processing method, device and equipment and a storage medium, belongs to the technical field of high-voltage direct current transmission, and is applied to a direct current transmission system, the direct current transmission system comprises a valve group and a converter transformer, and the converter transformer comprises a Y-bridge converter transformer and a D-bridge converter transformer. The method comprises the steps of determining that a valve group is in a differential protection action state; determining that a ground fault occurs in an area surrounded by the direct current side of the valve group and the valve side of the converter transformer; determining that a connecting line between the valve side of the converter transformer and the valve group or a common part of the Y-bridge converter transformer and the D-bridge converter transformer has a grounding fault; through the locking valve group, an inlet wire switch of the converter transformer is tripped off, and a grounding fault is isolated. The invention aims to identify the grounding fault of the valve area of the direct-current power transmission system, and for the fault which can realize fault isolation through valve group locking, the fault isolation can be realized only by locking the fault valve group.

The utility model discloses a miniature cable testing device for a ring main unit, which comprises a cable testing unit, the cable testing unit comprises a grounding cable testing end sleeve, a first branch bus, a second branch bus and a branch bus appearance sleeve, the grounding cable testing end sleeve is connected with a grounding contact through the first branch bus, and the branch bus appearance sleeve is connected with the grounding contact through the second branch bus. According to the utility model, the grounding cable test end sleeve is connected with the grounding contact of the existing isolation switch through the first branch bus, and the branch bus appearance sleeve is connected with the lower isolation grounding of the existing isolation switch through the second branch bus. The three phases of the grounding switch are led out through the independent grounding cable testing end sleeves of the first branch bus, the size of the cable testing device is reduced, the miniaturization requirement of the cable testing end is met, and meanwhile the size of the ring main unit with the cable testing end scheme can be further reduced according to the requirement in the installation layout remaining place.

Systems, methods, and non-transitory machine-readable storage media are provided. The system comprises: a lighting device comprising one or more independently controllable light sources; a camera; the power supply comprises a live wire, a zero wire and a ground wire; a controller coupled to the power source, the camera, and the lighting device, comprising: a controller chassis coupled to a ground; a common mode filter coupled to the live line and the null line; comprising a high-power grounding region of the optical driving board; a transformer coupled to the common mode filter and the internal ground region; the internal ground area comprises a microcontroller unit which is coupled to the high-frequency filter circuit, the lighting equipment and the industrial personal computer ground area, the internal ground area is provided with a second isolation ground, and the industrial personal computer ground area is provided with a third isolation ground; and a high frequency filter circuit coupled to a programmable logic circuit ground region, the programmable logic circuit ground region coupled to the camera, the programmable logic circuit ground region having a fourth isolated ground. A common mode filter is added in alternating current input.

A safety grounding terminal device can include a grounding terminal operable to switch between a common grounding connection or an isolated grounding connection, where the grounding terminal includes a hinge point connectable to a base of a housing via a rail in an arrangement that allows disconnection from the common grounding connection when an isolated grounding connection is required and does not compromise electrical contact. The grounding terminal can provide a waterproof grounding connection regardless of the type of grounding connection required. The common grounding connection or isolated grounding connection can be achieved without assembling any additional parts.

The utility model discloses a static pressure balance box and a feeding system, the balance box is used for realizing stable exchange of internal environment gas of a feeding cage box, the balance box comprises an outer box body and an inner box body arranged in the outer box body in an isolated manner, a gas inlet interface and a gas outlet interface are formed on the outer box body, the gas inlet interface is communicated with a first inner cavity of the outer box body, and the gas outlet interface is communicated with a second inner cavity of the outer box body. The exhaust connector is communicated with the second inner cavity of the inner box body, a plurality of air supply pipes which penetrate through a main body structure of the inner box body and are used for communicating the first inner cavity with the feeding cage box are formed on the inner box body, and a plurality of exhaust pipes which are used for communicating the second inner cavity with the feeding cage box are formed on the inner box body. The ventilation system of the large-scale mouse feeding device is simple in structure and clear in design thought, and the ventilation system of the large-scale mouse feeding device with the multiple cage boxes is optimized, so that stable and rapid flowing circulation of air in the feeding cage boxes is achieved, the good feeding environment in the cage boxes is maintained, and healthy growth of mice in the cage boxes is facilitated.

The invention relates to an isolation grounding switch power supply loop with remote control and a high-voltage switch control cubicle, and belongs to the field of circuit control. A near control contact with a change-over switch is connected in series in an existing control power supply sub-loop, a total air switch of the control power supply sub-loop or a motor power supply sub-loop is further connected with a common end of a remote control module through a remote control contact of the far and near control change-over switch, and a remote closing end of the remote control module is connected with a coil of a remote control power supply closing relay in series and then is grounded. The remote separating end of the remote control module is connected in series with a remote control power opening coil and then grounded. A normally open contact of a remote control power supply closing relay is connected in parallel to a near control contact of the far and near control change-over switch, a coil of a disconnecting link power supply relay is connected in series between the normally open contact of the remote control power supply closing relay and the ground, and the normally open contact of the disconnecting link power supply relay is connected in series in the motor power supply sub-loop. According to the control loop, the remote control function of the isolation grounding switch power supply control loop can be effectively realized.

The utility model relates to a novel double-bus double-section combined electric appliance, which comprises a first circuit breaker and a second circuit breaker which are symmetrically arranged on an underframe, and is characterized in that the first circuit breaker is connected with a first upper current transformer and a first lower current transformer, the first upper current transformer is connected with a first overhead transition main bus, and the second circuit breaker is connected with a second overhead transition main bus; a first angle type isolation grounding switch is connected between the first overhead transition main bus and the first lower current transformer, the first angle type isolation grounding switch is connected with the first main bus, a second circuit breaker is connected with a second upper current transformer and a second lower current transformer, the second upper current transformer is connected with the second overhead transition main bus, and the second lower current transformer is connected with the second overhead transition main bus. A second angle type isolation grounding switch is connected between the second overhead transition main bus and the second lower current transformer, and the second angle type isolation grounding switch is connected with the second main bus. The beneficial effects of the utility model are that after the double-bus double-section interval circuit breakers are symmetrically arranged, only two interval space positions are occupied, and the space is greatly saved.

The utility model relates to a GIS equipment isolation grounding manual operation electromagnetic locking structure comprising a mounting sleeve located on a manual operation tool insertion path, and the mounting sleeve is sequentially provided with a locking switch assembly, a telescopic electromagnet and a microswitch CKB along the manual operation tool insertion direction. The locking switch assembly comprises a microswitch CKA and a microswitch CKC, and the trigger end of the microswitch CKB, the trigger end of the microswitch CKA, the trigger end of the microswitch CKC and a telescopic shaft of the telescopic electromagnet all extend to the moving path of the manual operation tool in the mounting sleeve. When the manual operation rod is inserted, the manual operation rod can automatically check whether the operation meets a five-prevention mechanism or not, a mechanism action loop is disconnected during manual operation, and the manual operation rod is simple in structure, high in reliability, low in cost, small in resistance and not prone to being burnt out due to heating; overall modularization of the electromagnetic locking structure can be achieved, universality is good, structure standardization of different products under different working conditions is achieved, and new equipment and old equipment can be additionally installed conveniently.

The utility model discloses a three-station integrated isolation grounding device for urban rail transit, and belongs to the technical field of visual grounding devices. The device comprises an integrated isolation grounding switch QS, a controller KZQ and a switch control loop. The integrated isolation grounding switch QS is connected with the switch control loop, and the switch control loop is controlled by the controller KZQ; one end of the integrated isolation grounding switch QS is connected with the in-garage contact net, and a motor electrified disconnecting link of the integrated isolation grounding switch QS is arranged between the out-garage contact net and the walking rail. According to the utility model, the grounding switch and the networking isolation switch are combined into two positions and one position, the condition that the grounding switch and the grounding switch are simultaneously closed is eliminated from a mechanical structure, and the newly designed switches are arranged in the same switch cabinet, so that the operation process is simplified, the installation space is reduced, and the phenomenon that the networking isolation switch and the grounding switch are mistakenly closed is thoroughly prevented.

The utility model relates to a detachable bus assembly unit structure of a 126kV combined electric appliance. The detachable bus assembly unit structure mainly comprises a shell, an insulating mounting plate, a cover plate, a contact seat, a conducting rod and a connecting conductor, a positive electrode connecting device and a negative electrode connecting device are installed in the shell and are the same in structure. The positive electrode connecting device is of a three-way structure and comprises a U-shaped connecting conductor, three faces of the U-shaped connecting conductor are connected with conducting rods respectively, the tail end of a first conducting rod is connected with a voltage transformer through a contact seat, the tail end of a second conducting rod is connected with a lightning arrester through a contact seat, and the tail end of a third conducting rod is connected with an isolation grounding switch through a conducting piece. The positions of the voltage transformer, the lightning arrester and the isolation grounding switch can be interchanged. The three insulator butt joint surfaces are respectively connected with the isolation grounding switch, the lightning arrester and the voltage transformer, installation of various structure types can be realized, the structure is simple, the processing is convenient, the cost is low, the standardization of products is improved, and reliable operation of high-voltage switch equipment is facilitated.

The utility model belongs to the technical field of electrical interlocking control, and discloses an interlocking mechanism and a switch cabinet. The interlocking mechanism is used for realizing interlocking of the isolation grounding switch and the circuit breaker. Specifically, the interlocking mechanism comprises a movable plate and an interlocking plate, the movable plate is connected with an operating valve of the isolation grounding switch, and the movable plate has a first state for opening the operating valve and a second state for closing the operating valve; the interlocking plate is arranged in the circuit breaker and is in transmission connection with the movable plate; when the circuit breaker is switched on, a crank arm of the circuit breaker abuts against the interlocking plate, so that the interlocking plate limits the movable plate to be switched from the second state to the first state. And when the movable plate is switched from the second state to the first state, the movable plate drives the interlocking plate, so that the interlocking plate limits closing of the circuit breaker. According to the utility model, the interlocking function of the circuit breaker and the isolation grounding switch can be realized, the interlocking mechanism is relatively simple, the influence on the structure change of the circuit breaker and the isolation grounding switch is small, and the cost is reduced.

The invention provides a real-type GIS equipment fault simulation device and simulation method, and the device comprises a 750kV high-voltage circuit breaker, an isolation / grounding switch and a basin-type insulator, is connected with 750kV high voltage through a 750kV sleeve assembly, and comprises a gas chamber, a bus section and a free discharge experiment cabin. The bus section comprises a 750kV elbow bus with a particle trapper interface, a 750kV three-way bus, a 750kV end bus and a 750kV straight bus with a particle trapper interface, the number of the air chambers is five, and the five air chambers are three air chambers without particle trapping and two air chambers with particle trapping. The device has the advantages that typical faults such as insulator surface flashover, discharge between contacts and discharge of the contacts to the shell in actual operation can be accurately reproduced, and meanwhile the voltage conversion insulating sleeve and the discharge particle capturing function are integrated. The device is especially suitable for reliability verification and various discharge experiments of GIS equipment in severe environments such as high altitude and low temperature, and provides key technical support for safe operation of a power system.