1480results about "Air-break switch details" patented technology

The invention relates to the technical field of low-voltage electric appliances, in particular to a magnetic flux release, an isolating switch and a power supply system. The electromagnetic coil is installed on the support, and the ejector rod is inserted into the electromagnetic coil in a sliding mode. In the electromagnetic coil, at least two movable iron cores which are arranged at intervals in the axial direction are arranged on the ejector rod; when the electromagnetic coil is powered on, at least one movable iron core moves in the axial direction of the ejector rod and drives the ejector rod to move. According to the embodiment of the invention, at least two movable iron cores are arranged in the magnetic flux release, so that differentiated response can be realized for different faults.

The utility model belongs to the technical field of medium-voltage power distribution systems, and discloses an isolating switch device and a switch cabinet, the isolating switch device comprises an insulating rod, a conductive block, a conductive sheet and an operating mechanism, the conductive block is sleeved on the insulating rod, the conductive sheet is fixedly connected with the conductive block, and the operating mechanism drives the conductive sheet and the conductive block to rotate through the insulating rod. Therefore, the conducting strip is selectively connected or disconnected with the circuit breaker connector bar, and the conducting block is electrically connected with the voltage transformer in the rotating process. An isolating switch device is additionally arranged between a circuit breaker and a voltage transformer in a switch cabinet, an operating mechanism is utilized to drive a conducting strip and a conducting block to rotate through an insulating rod, the conducting block and the voltage transformer keep electrical connection in the rotating process, the position of the conducting strip is changed in the rotating process, and then the conducting strip is selectively connected with or disconnected from a circuit breaker connector bar. The structure is simplified, the number of elements is reduced, flexible operation can be achieved, and the stability and reliability of the disconnecting switch device can be guaranteed.

The invention discloses a mechanical interlocking device of a switch cabinet, the switch cabinet comprises a cabinet body, a cabinet door, and a circuit breaker mechanism and an isolation mechanism arranged in the cabinet body, the cabinet door is hung on the cabinet body, the isolation mechanism is provided with a grounding shaft and an isolation shaft, the circuit breaker mechanism is provided with a closing button and a circuit breaker main shaft, the grounding shaft is provided with a first cam, and the isolation shaft is provided with a second cam. The isolation shaft is provided with a second cam, the circuit breaker main shaft is provided with a third cam, the mechanical interlocking device comprises a first interlocking assembly, a second interlocking assembly and a third interlocking assembly, one end of the first interlocking assembly is matched with the outline of the first cam, and the other end of the first interlocking assembly is matched with the cabinet door in a hanging mode; one end of the second interlocking assembly is matched with the contour of the second cam, the other end of the second interlocking assembly is in locking fit with the closing button, one end of the third interlocking assembly is matched with the contour of the third cam, and the other end of the third interlocking assembly is in shielding fit with the isolation shaft. Misoperation of the switch cabinet can be prevented, the reliability of the interlocking mechanism can be improved, and the service life of the interlocking mechanism can be prolonged.

The invention provides a vacuum circuit breaker with an isolating switch, which comprises a switch body and an anti-misoperation device, the anti-misoperation device comprises a first cam and an interlocking plate, the first cam is fixed on an isolating main shaft and rotates along with the isolating main shaft in a linkage manner, the interlocking plate is movably mounted on the switch body, and when the isolating main shaft is in a switching-off position, the interlocking plate rotates along with the isolating main shaft. The interlocking plate is driven by the first cam to be in a locking position, so that the interlocking plate is matched with the handle of the circuit breaker to be locked, the circuit breaker is prevented from being switched on, the situation that maintenance personnel can still manually drive the circuit breaker to be switched on when the disconnecting switch and the circuit breaker are both in a switching-off state in the prior art is avoided, unnecessary operation is prevented, and time and labor are saved; in addition, when the isolating switch is in a closing position, the isolating main shaft drives the first cam to rotate, the interlocking plate is separated from the circuit breaker handle under the acting force of the elastic piece, and the circuit breaker can be closed.

The utility model relates to a protection device for an MSD switch, a power battery comprising the protection device and an operation machine comprising the power battery. The MSD switch includes a receptacle formed with a cavity. The protection device comprises a lock frame which is arranged adjacent to the socket and is provided with a lock hole, a retainer which can be locked with the lock frame in a removable manner, and an insulating block which is arranged on the retainer. And the retainer and the insulating block are configured in a way that when the retainer is locked on the lock frame, the insulating block is jointed in the concave cavity. The protection device is simple in structure and assembly, low in cost and high in universality.

The invention belongs to the technical field of electric power, and discloses an isolating switch which comprises a base, a second insulating column fixedly mounted at the top of the base, a static contact pad fixedly mounted at the top of the second insulating column, and a disconnecting link assembly hinged to the static contact pad, and the butt joint assembly is fixedly arranged at the top of the base. According to the invention, the disconnecting link main body is driven by an electric motor or a hand wheel to rotate by taking the hinged part of the disconnecting link main body and the static contact pad as a center shaft, so that the butt joint piece falls into the top of the moving contact pad, the butt joint piece pushes the two sliding frames, the conductive piece and the butt joint toothed plate to move relatively, and the butt joint toothed plate is engaged with racks on two sides of the butt joint piece; the contact area of the butt-joint piece and the butt-joint toothed plate is increased through meshing of the multiple racks, the phenomenon of deformation caused by thermal expansion and cold contraction is avoided, meanwhile, the butt-joint piece and the butt-joint toothed plate are in surface contact all the time, the effective conductive section is guaranteed, local overheating and arc discharge are avoided, and the reliability of circuit on-off is guaranteed.

The utility model relates to the technical field of outdoor high-voltage vacuum circuit breakers, and discloses an outdoor high-voltage vacuum circuit breaker with an isolating switch, the top of a base is fixedly connected with a circuit breaker body, the middle part of the front side of the base is fixedly connected with a fixed shell, and the two sides of the fixed shell are fixedly connected with electric push rods. A clamping plate is fixedly connected to one side of the electric push rod, a connecting base is fixedly connected to the middle of the front side of the circuit breaker body, a winding roller is rotatably connected to the interior of the connecting base, an electric wire is arranged on the winding roller, and an isolating switch is fixedly connected to the bottom of the electric wire; a servo motor, a winding roller, an electric wire and the like are arranged to be matched with the disconnecting switch for use, the servo motor drives the winding roller to rotate so as to unwind the electric wire, the electric wire drives the disconnecting switch to move downwards so as to move to the position below the circuit breaker body, and therefore the danger of electric shock caused by an operator in the using process can be prevented; and a response can be conveniently and quickly made in an emergency.

According to the technical scheme, the contact assembly comprises an installation plate, a contact knife support, a static contact support and a contact knife, each static contact is provided with a cushion block with an inclined plane, each cushion block is provided with a buffer spring, each static contact support is provided with symmetrical static contacts, each static contact comprises a contact terminal, a support and a connecting rod, and each contact terminal is provided with an inclined plane. The contact terminal is fixedly connected to the static contact support, the support is fixedly connected to the static contact support, the support is movably connected with the connecting rod, the connecting rod is provided with a connecting rod protrusion extending and contacting with an inclined plane, the contact knife is provided with a cavity, the cavity is provided with a fastening device, and the static contact support is provided with a matched fastening base. Through the arrangement of the cushion block and the buffer spring, the impact on the contact knife is reduced, and the service life of the contact knife is prolonged. By arranging the linkable static contact, the static contact can clamp the contact knife to obtain reliable connection and is not easy to loosen.

The utility model provides an anti-impact connecting bolt fastening structure of a high-voltage isolating switch, and relates to the technical field of high-voltage switches, the anti-impact connecting bolt fastening structure comprises a high-voltage isolating switch base and a switch anti-impact bolt connecting assembly, through bolts penetrate through the inner sides of base bolt holes, the lower side of a bolt head rubber mat is provided with a back shore spring, and the back shore spring is connected with the switch anti-impact bolt connecting assembly. A limiting sleeve is connected to the outer side of the jacking spring in a sleeving mode, a nut rubber mat is arranged on the lower side of the limiting sleeve, a connecting nut is arranged on the lower side of the nut rubber mat, a metal locking nut is arranged on the lower side of the connecting nut, and due to the effective buffering effect of a damping rubber mat, damage of vibration to the base is remarkably reduced, and the service life of equipment is prolonged; and through rotation of the penetrating bolt, rapid mounting and dismounting can be achieved, firm and reliable connection is ensured, and through adjustment of the fastening strength of the penetrating bolt, impact loads under different working conditions can be flexibly coped with, and stable operation of equipment is ensured.

The invention relates to the technical field of circuit breaker isolation switch equipment, and discloses a circuit breaker isolation switch of a primary and secondary fusion ring main unit, which comprises a mechanism box body, an installation space is arranged in the mechanism box body, and the top of the mechanism box body is fixedly connected with a plurality of airtight insulators. According to the invention, when the contact piece is arranged and the disconnecting switch part needs to be switched on, the operation switch is firstly rotated reversely, the rotating shaft rotates to drive the connecting contact at one end of the isolating rod at one end of the operation insulator to approach, and the connecting inclined block is arranged to be inclined, so that the collision phenomenon caused by inaccurate alignment of the isolating rod and the connecting contact can be avoided; the isolating rod is aligned and connected with the connecting contact, so that the connecting contact is protected from being damaged due to collision between the connecting contact and one end of the isolating rod on one hand, and the butt joint accuracy of the connecting contact at one end of the isolating rod on the other hand is improved on the other hand.

The invention discloses an isolating switch operating mechanism with a quick tripping function and an operating method thereof, and relates to the technical field of isolating switches. The isolating switch operating mechanism with the quick tripping function comprises a shell, a connecting rod mechanism and a handle shaft assembly, and the handle shaft assembly is configured to transmit rotating force of an operating handle to the connecting rod mechanism. According to the disconnecting switch operating mechanism with the quick tripping function and the operating method thereof, the rotating force of the operating handle is transmitted to the connecting rod mechanism by arranging the handle shaft assembly, so that the connecting rod mechanism drives the switch body to be switched off or switched on, and the requirement of a rotating operation mode of the disconnecting switch can be met; and the lock catch of the connecting rod mechanism is buckled with the jump pin.

The invention relates to the technical field of electric switches, in particular to an electric disconnecting switch interlocked with a pole-mounted circuit breaker and a control method thereof, and the method comprises the steps: obtaining standard coil current data, actual coil current data, main loop three-phase current data, power side voltage data and load side voltage data, and carrying out the preprocessing; determining time division points by using the wave crest and wave trough distribution characteristics so as to divide stage intervals; the health coefficient of the pole-mounted circuit breaker is obtained through stage interval similarity analysis; calculating an electrical isolation coefficient by combining the main loop current level difference and the bilateral voltage amplitude phase difference; and performing hierarchical interlocking control on the electric isolation switch based on the health coefficient and the electrical isolation coefficient. According to the invention, a two-dimensional evaluation system of mechanism health pre-judgment and electrical isolation hard criteria is constructed through multi-source data fusion, and the safety and reliability of distribution network operation are improved through a hierarchical interlocking control strategy.

The invention provides a 35kV isolation switch opening and closing device. The 35kV isolation switch opening and closing device comprises a substrate, a contact unit, a transmission assembly and a driving unit. The substrate is provided with two composite post insulators which are arranged at an interval; the contact unit comprises a first connecting part and a second connecting part, the first connecting part is connected with one composite post insulator, and the second connecting part can be connected with the other composite post insulator; the transmission assembly is arranged in the vertical direction, and the top end is connected with the second connecting part. The driving unit is connected with the bottom end of the transmission assembly and used for driving the transmission assembly to move in the vertical direction, and the transmission assembly drives the second connecting part to move; wherein the driving unit drives the transmission assembly to move, and the transmission assembly drives the second connecting part to be in contact with or disconnected from the corresponding composite post insulator, so that switching-on or switching-off is realized. The invention provides a 35kV isolation knife switch opening and closing device, and aims to solve the problem of poor safety caused by manual close-range opening and closing of an isolation knife switch in the prior art.

The invention relates to a two-station operating mechanism for a PT (potential transformer) of a C-GIS (gas insulated switchgear), which comprises an operating mechanism box, a centering assembly is mounted in the operating mechanism box, the centering assembly comprises a quick-return crank arm, two sides of the quick-return crank arm are respectively connected with a reset spring guide rod, the other side of each reset spring guide rod extends out of the operating mechanism box, and the other side of each reset spring guide rod extends out of the operating mechanism box. The outer wall of the reset spring guide rod is further sleeved with a reset spring. The operating assembly comprises an operating handle, a mechanical operating transmission shaft and a sealing shaft, the sealing shaft penetrates through the operating mechanism box and then is connected with a bevel gear, the quick-return crank arm is sleeved on the sealing shaft, one side of the mechanical operating transmission shaft is connected with the sealing shaft, the other side of the mechanical operating transmission shaft is connected with the operating handle, and the operating handle drives the sealing shaft to rotate. And the position of the sealing shaft is kept through the cooperation of the centering assembly. According to the operating mechanism, the mechanical operating transmission shaft, the sealing shaft and the bevel gear are driven to rotate by rotating the operating handle, then the PT cabinet transmission mechanism is driven to rotate, and the operating mechanism is simple in structure, low in cost, small in occupied space, easy to operate, safe and reliable.

The invention discloses a reverse operation limiting structure for a slow-acting double-shaft three-station mechanism, which relates to the technical field of accessories of medium-voltage gas insulated metal-enclosed switchgear and comprises a mechanism bracket, a locking part and a limiting part. The mechanism support is rotatably connected with an indication shaft, a grounding operation shaft and an isolation operation shaft, and linkage is realized through a gear set. The locking part is matched with the elastic pin assembly through the locking disc, and locking of the indicating shaft is achieved. The limiting part is of an elastic locking structure, is arranged at the ends, penetrating out of the mechanism front plate, of the grounding operation shaft and the isolation operation shaft, is in an unlocking state when no external force is applied to the operation handle, and can limit the rotation angle of the operation shaft after the external force is applied. The limiting part is arranged at the foremost end of the operation shaft, so that timely and reliable mechanical limiting of reverse misoperation is realized, damage to a mechanism transmission part and a switch body is effectively prevented, and operation safety is guaranteed. The structure is ingenious, the number of parts is small, the occupied space is small, the reliability is remarkably improved, and the cost is reduced.

The invention relates to an isolation mechanism on a solid cabinet, which relates to the technical field of isolation mechanisms and comprises an insulating shell, a breaking assembly located in the insulating shell and a control assembly located on the vertical side of the insulating shell. A plurality of first binding posts are fixedly arranged on the bottom side of the insulating shell in the horizontal direction, and a plurality of second binding posts are fixedly arranged on the top of the insulating shell in the vertical direction. A supporting plate is fixedly arranged on the bottom side of the insulating shell, vertically upward protection plates are fixedly arranged on the two opposite edges of the supporting plate, and the side faces, close to each other, of the two protection plates abut against the two opposite vertical side faces of the insulating shell. Extension plates are detachably installed on the edges, away from the supporting plate, of the two protection plates in the vertical direction, cover plates located above the second binding posts are fixedly arranged on the upper side faces of the two extension plates in the horizontal direction, and the side faces, close to each other, of the two cover plates can abut against each other. According to the upper isolation mechanism, in the transportation process, the risk that the first binding post and the second binding post are damaged in the transportation process is reduced.

The invention discloses a strip-shaped off-circuit tap-changer device which comprises a supporting structure, three phases of static contact assemblies are arranged on the supporting structure, and each phase of static contact assembly is provided with a moving contact assembly. A rack capable of sliding back and forth is arranged in the supporting structure; the moving contact assembly is installed on the rack and can move back and forth along with the rack. A transmission shaft is rotationally mounted on the supporting structure; a gear meshed with the rack is coaxially fixed on the transmission shaft; the gear shifting limiting and locking mechanism comprises a gear indicating board, a handle and a limiting piece. The gear indication board is fixedly arranged on the transformer and arranged outside the transmission shaft in a sleeving mode. A plurality of positioning holes are formed in the gear indication board; the handle is positioned above the gear indication board and is fixed on the transmission shaft; the limiting piece is in threaded connection with the handle, and after the limiting piece is aligned with the positioning hole, the limiting piece spirally moves downwards and is inserted into the positioning hole. The device is simple in structure, stable and reliable in performance, low in manufacturing cost, investment-saving and good in anti-corrosion and moisture-proof performance.

The invention discloses an outdoor high-voltage isolation switch mechanism and device, and belongs to the technical field of electrical equipment, the outdoor high-voltage isolation switch mechanism comprises two movable contact pieces, a first static contact piece, a second static contact piece and an elastic closing assembly, the elastic closing assembly comprises a first spring, a locking structure, two groups of pin shafts, two rotating cylinders and two pull wires, the group of pin shafts comprises three pin shafts which are arranged at intervals along the length direction of the movable contact pieces, the movable contact pieces are provided with mounting holes for the pin shafts to penetrate in a sliding manner, one end of each pin shaft is fixedly provided with a limiting block, the other end of each pin shaft is sleeved with a first sliding ring and a second sliding ring in a sliding manner, and the first sliding rings and the limiting blocks abut against the opposite surfaces of the two movable contact pieces respectively; the two ends of the first spring abut against the opposite end faces of the first sliding ring and the second sliding ring respectively. The locking structure is used for transmitting torque to the rotating drums, the rotating directions of the two rotating drums are opposite, and the locking structure is further used for enabling the two rotating drums to be relatively fixed. According to the invention, the convenience of tightening the moving contact can be improved.

The invention relates to the technical field of circuit breakers, and discloses a closing device of a circuit breaker, which comprises a circuit breaker body, an upper binding post and a lower binding post arranged on the circuit breaker body, a transmission assembly arranged on the circuit breaker body, and a locking mechanism and an adjusting mechanism arranged on the transmission assembly, an isolation disconnecting link is movably connected between the upper binding post and the lower binding post. The transmission assembly comprises a transmission main rod which is rotatably installed on the circuit breaker body. According to the closing device of the circuit breaker, when a certain phase of line in the three-phase line of the circuit breaker fails, the corresponding faulty line in the A disconnecting link, the B disconnecting link and the C disconnecting link in the isolation disconnecting links can be accurately isolated and powered off, the specific disconnecting links are unlocked, the other disconnecting links are kept in a locked state, power failure of a non-faulty phase is avoided, and the reliability of the circuit breaker is improved. Through the operation mode, other normal lines can be prevented from being influenced by misoperation, and the stability and the reliability of a power system are effectively improved.

Embodiments of the invention provides a smart outdoor switchgear for control and protection of connection and disconnection of a medium-voltage microgrid, which includes: a current transformer, an isolating switch mechanism, an outdoor circuit breaker, an electric isolating driving mechanism and an outdoor jet type fuse. The current transformer is installed on an outlet end of the outdoor circuit breaker. The isolating switch mechanism is connected to the current transformer, and the isolating switch mechanism is connected to the outlet end of the outdoor circuit breaker through the current transformer. A top of the isolating switch mechanism on a side away from the current transformer is connected to a top of the outdoor jet type fuse, and a bottom of the isolating switch mechanism on the side away from the current transformer is connected to a bottom of the outdoor jet type fuse. The electric isolating driving mechanism is installed on the bottom of the isolating switch mechanism.

An air circuit breaker is disclosed. An air circuit breaker according to one aspect of the present disclosure includes a cradle and a circuit breaker main body drawn-in and drawn-out to / from the cradle; and further includes: an interlock lever connected to an off button of the circuit breaker main body to move vertically; and a transfer device unit provided on the lower side of the cradle, wherein the transfer device unit can include a key interlock assembly, which is provided to be horizontally movable so that, in a state of having moved toward one side thereof, the movement of the interlock lever is restricted and, in a state of having moved toward the other side thereof, the movement of the interlock lever is permitted.

The invention provides a grounding switch taking environment-friendly gas as an insulating medium. The grounding switch comprises a shell, and a transmission mechanism assembly, a grounding knife switch assembly, a moving side arc contact assembly and a static side arc contact assembly which are arranged in the shell, one end of the transmission mechanism assembly is connected with the output end of an external operating mechanism, the other end of the transmission mechanism assembly is connected with the grounding knife switch assembly, the transmission mechanism assembly is further connected with a grounding assembly, the moving side arc contact assembly is arranged at the action end of the grounding knife switch assembly, and the static side arc contact assembly is arranged on a bus side conductor. And the transmission mechanism assembly is controlled to act, and the grounding knife switch assembly drives the moving side arc contact assembly to do linear motion and to be in contact with or separated from the static side arc contact assembly, so that the grounding switch executes opening and closing. The circuit breaker has the advantages of being reasonable in structure, low in cost, reliable in action, stable in insulation performance and high in ablation resistance, and circuit opening and closing can be completed under an environment-friendly gas medium.

The invention relates to the field of low-voltage electric appliances, in particular to an operating mechanism and a switching device comprising the operating mechanism. In the operating mechanism, an operating shaft 2 drives a spring to store energy first and then release energy through an energy storage shaft, a connecting rod used for being in transmission connection with a moving contact mechanism of the switching device is kept static before the spring starts to release energy, and the energy storage shaft and the connecting rod are driven to rotate towards two opposite directions respectively by the energy release of the spring; the operating mechanism can drive the moving contact mechanism to rotate by a larger angle through the connecting rod, and the opening distance between the moving contact mechanism and the static contact is increased, so that the breaking performance and the electrical performance of the switching device are improved.

The invention discloses a hydraulic spring operating mechanism with a double-wear-resistant ring structure, which comprises an opening / closing piston and an energy storage piston, and is used for executing actions in a reciprocating manner in a cylinder in a double-wear-resistant ring supporting manner. The double-abrasion-resistant-ring structure of the piston is achieved through contact between the two non-metal friction rings which are arranged in the axial direction in a spaced mode and the inner wall of the metal cylinder barrel, and the positioning and guiding functions are achieved. The positioning function ensures that the piston and the cylinder barrel are coaxial, the guiding function realizes guiding through mechanical sliding friction formed by the friction ring and the inner wall of the cylinder barrel when the piston reciprocates, and direct metal friction between the piston and the inner wall of the cylinder barrel is avoided. The double-abrasion-resistant-ring structure eliminates direct metal friction between the piston and the cylinder barrel to improve abrasion resistance, uniform distribution of gaps between the piston and the cylinder barrel is guaranteed through the positioning function, the sealing effect of a sealing piece is improved, the sealing piece is durable, gaps generated after long-term reciprocating motion are compensated, hydraulic oil in the cylinder barrel is prevented from leaking, and the service life of the sealing piece is prolonged. And the service life of the hydraulic spring operating mechanism is obviously prolonged.

The invention discloses a linear kick rapid opening and closing control method for an isolating switch, and particularly relates to the technical field of opening and closing control of high-voltage isolating switches. Collecting a linear displacement signal between the conductive arm and the static contact and an electromagnetic driving current change curve, and constructing a kick behavior data matrix; establishing a multi-dimensional state energy threshold model based on the peak acceleration and the zero crossing point; combining a real-time current response curve to complete kick prediction trajectory fitting; fast phase torque compensation is carried out according to the current phase deviation angle, and an active suppression control pulse sequence is generated to realize kick phase locking; a damping recovery coefficient is further calculated based on aftershock feedback, an electromagnetic response factor at the moment of operation is fused, a final control instruction sequence is generated and output to a driving unit, and accurate and high-speed switching-on and switching-off operation is achieved; the method has the advantages of fast control response, strong anti-disturbance capability, high adaptability and the like, and is suitable for accurate control of the isolation switch in various complex power scenes.

The invention belongs to the field of switch interlocking mechanisms, and particularly provides a circuit breaker and three-position switch interlocking mechanism and a gas insulated switchgear. The interlocking mechanism is provided with a driving rod which can move up and down, and the driving rod is provided with a grounding interlocking part which is interlocked with a grounding switch of a three-position switch, a closing interlocking part and an opening interlocking part which are interlocked with the opening and closing states of a circuit breaker mechanism, and a chamber door interlocking part which is interlocked with a chamber door. When the driving rod is respectively located at different upper and lower positions, each part can be respectively matched with the three-position switch, the circuit breaker and the chamber door, the cable chamber door is opened on the premise that the grounding switch of the three-position switch is closed and the circuit breaker is closed, and when the cable chamber door is opened, the grounding switch and the circuit breaker cannot be opened. Therefore, the gas-insulated switchgear meets the requirements of a power grid and a standard. The gas insulated switchgear comprises the interlocking mechanism.

The invention discloses a three-phase intelligent disconnecting switch fuse group, which relates to the technical field of circuit protection and comprises an emergency protection circuit device, a three-phase disconnecting switch module, a fuse module, an intelligent control module and a base. According to the invention, the efficiency and reliability of circuit protection can be significantly improved through a three-stage cascade architecture, the optical fiber current sensor and the millimeter wave radar temperature measurement module are integrated by using the multi-physics field coupling detection unit, accurate real-time monitoring of current, temperature and arc characteristics is realized, the sensitivity and accuracy of fault detection are enhanced, and the fault detection efficiency and reliability are improved. The deep learning trigger judgment unit adopts a CNN-LSTM hybrid network, dynamically optimizes a protection threshold and effectively deals with a complex and changeable circuit environment, and the electromagnetic driving emergency processing mechanism adopts a strong magnetic field electromagnet driving technology, so that quick response and efficient execution are ensured, the fault processing time is further shortened, the stability and safety of the system are improved, and the reliability of the system is improved. And the effect of emergency circuit protection is achieved.