3913 results about "Disconnector" patented technology

The invention relates to the technical field of machine learning, in particular to a heating fault prediction method and system for a high-voltage circuit breaker and an isolating switch of the high-voltage circuit breaker. The method comprises the following steps: carrying out multi-source data acquisition on a high-voltage isolation switch and an associated high-voltage circuit breaker through an SCADA system, and carrying out data preprocessing to obtain a preprocessed data set; performing operation feature correlation analysis on the preprocessed data set to obtain a correlation operation feature set; performing dynamic association network construction on the association operation feature set to obtain a dynamic association network graph; acquiring historical fault data; performing propagation risk path search according to the historical fault data and the dynamic association network diagram to obtain a candidate risk path set; and performing path propagation probability calculation on the candidate risk path set to obtain a path probability data set. According to the method, the influence of the associated high-voltage circuit breaker on the heating risk of the isolating switch is effectively identified, so that the accuracy of fault prediction and the timeliness of early warning are improved, and a more reliable guarantee is provided for safe and stable operation of a power system.

The invention discloses a GIS disconnecting switch multi-state intelligent sensing system, and relates to the field of GIS disconnecting switch state monitoring. A self-calibration multi-mode sensor is deployed for multi-source data acquisition, and novel sensors including terahertz imaging and the like are included; in data preprocessing, deep learning noise reduction is applied, fuzzy entropy is used for dynamic weighted fusion, and abnormal values are processed by an improved algorithm; feature extraction is combined with a plurality of frontier algorithms to process vibration signals, and CRNN is used to analyze acoustic signals; the QPSO evidence theory is adopted for state fusion perception, the node relation is learned by means of GNN, and the weight is adjusted according to the information gain rate; state assessment and early warning are based on transfer learning, GAN and LSTM-attention mechanisms, and early warning priorities are ranked by FAHP. According to the invention, multi-mode accurate acquisition, intelligent data processing, deep feature mining, innovative fusion perception, accurate evaluation and early warning and efficient fault diagnosis and positioning are realized, the state of the GIS isolation switch can be comprehensively and accurately perceived, the system is self-learned and optimized, the equipment safety is guaranteed, the risk of a power system is reduced, and the power operation and maintenance benefits are improved.

An internal heating early warning method and system for a GIS device isolation switch. The heating early warning method comprises: acquiring an internal gas temperature, an original absolute pressure, and an ambient temperature of at least one GIS device isolation switch, and a three-phase load current of the isolation switch (S11); on the basis of the original absolute pressure, the ambient temperature, the gas temperature, and the three-phase load current, calculating a plurality of characteristic quantities of the pressure, wherein the plurality of characteristic quantities comprise a month-on-month growth quantity, a month-on-month growth rate, a year-on-year growth quantity, a year-on-year growth rate, an interphase difference quantity, an interphase difference rate, a growth quantity compared with an adjacent gas chamber, and a growth rate compared with the adjacent gas chamber (S21); making a severe heating anomaly determination, comprising: if an anomaly condition is satisfied, sending an early warning signal for a severe heating defect (S31); determining the correlation between the original absolute pressure and the ambient temperature, if the original absolute pressure is correlated to the ambient temperature, calculating the ambient compensation pressure after the ambient temperature is compensated, and using the ambient compensation pressure to recalculate the plurality of characteristic quantities of the pressure, and if the original absolute pressure is not correlated to the ambient temperature, determining the correlation between the pressure and the three-phase load current, and if the pressure is not correlated to the three-phase load current, making a general heating anomaly determination (S41); and making a general heating anomaly determination, comprising: if an anomaly condition is satisfied, sending an early warning signal for a general heating defect (S51).

A meter socket adapter may include an integrated whole-building disconnect switch configured to disconnect a building associated with the meter socket adapter from a utility grid, a distributed energy resource (DER) interface to connect a distributed energy resource (DER), and an energy management system (EMS) configured to monitor electrical current passing through the meter socket adapter and, based on the monitored current, actuate the whole-building disconnect switch.

The invention belongs to the technical field of power distribution network equipment, and relates to an interlocking device with an emergency unlocking function and an environment-friendly ring main unit, and the interlocking device comprises an isolation interlocking assembly, a circuit breaker interlocking assembly and a chamber door interlocking assembly. The isolation interlocking assembly comprises an isolation interlocking plate, and one side of the isolation interlocking plate is provided with a shielding part; the circuit breaker interlocking assembly comprises a closing interlocking group which is arranged on the isolation interlocking plate and is used for locking and unlocking a closing release in the ring main unit; the chamber door interlocking assembly comprises a chamber door interlocking piece suitable for movably unlocking a cable chamber door on the ring main unit; the chamber door interlocking piece is provided with a rod abutting part connected with the chamber door interlocking piece through a fixing bolt. The protection functions that the circuit breaker cannot be switched on first when the disconnecting switch is switched off, the grounding switch is switched on in an electrified mode after the circuit breaker is switched on, and a cable chamber door cannot be opened when the circuit breaker is switched on are achieved through interlocking. And meanwhile, under the emergency condition of interlocking failure caused by interlocking clamping stagnation or other unforeseen circumstances, the fixing bolt can be disassembled to unlock and open the cable chamber door emergently.

The invention relates to the technical field of circuit breakers, and discloses a magnetic control type pole-mounted circuit breaker, which comprises an arc extinguish chamber, a mechanism box, a current transformer and an isolating switch, and is characterized in that the arc extinguish chamber comprises a ceramic airtight shell fixedly mounted on the upper side of the mechanism box, and a fixed contact is fixedly mounted in the ceramic airtight shell; a moving contact is slidably installed in the ceramic airtight shell, a corrugated pipe is fixedly installed in the ceramic airtight shell, the moving contact is fixedly connected with the corrugated pipe, and a sliding rod is slidably installed in the mechanism box. The magnetic control driving mechanism is arranged in the mechanism box to drive the sliding rod to horizontally move left and right, the moving contact is driven to move up and down through the transmission effect of the transmission plate, the moving contact and the fixed contact are kept in a contact or separation state, opening and closing actions of the arc extinguish chamber are achieved, the design structure is simple, a buckle structure for restraining the position of the moving contact is simplified, and the working efficiency is improved. The device has the advantages of low failure rate and sensitive opening and closing actions.

The invention relates to an open-type combined electric appliance. The open-type combined electric appliance comprises a base; the circuit breaker assembly is installed on the base and comprises a circuit breaker support, a circuit breaker grounding terminal, a tank body, a circuit breaker supporting insulator, an external mutual inductor and an isolating switch static contact; the isolating switch assembly is mounted on the base and comprises an isolating switch bracket, an isolating switch grounding terminal, an isolating switch supporting insulator, a conducting bar, an isolating switch moving contact and a pull rod; a grounding rod is arranged beside each circuit breaker post insulator matched with the isolating switch post insulator, and a grounding contact matched with the grounding rod is mounted on each circuit breaker post insulator; the pull rods are driven by a first linkage mechanism to ascend and descend synchronously, and the grounding rods are driven by a second linkage mechanism to rotate synchronously. According to the combined electric appliance, synchronous swinging of the pull rods and the grounding rods is achieved through cooperation of the first linkage mechanism and the second linkage mechanism, the number of needed middle transmission rod pieces is greatly reduced, the structure is simplified, and action is more convenient.

The invention relates to the technical field of high-voltage compensation, and provides a voltage stabilization type electric energy quality comprehensive treatment device. The TBB static reactive power compensation device comprises at least one switching reactance capacitor bank. Wherein the reactance capacitor bank comprises a vacuum contactor; the SVG dynamic reactive power compensation device comprises an SVG compensation device, and the SVG compensation device is electrically connected with a transformer through an isolation switch fuse group. Wherein the transformer is electrically connected with the switched reactance capacitor bank. The disadvantages of a traditional TBB are avoided through the TBB + SVG high-voltage reactive power dynamic hybrid compensation device, and the advantages of the SVG are added; sVG dynamic compensation is high in response speed and can compensate loads with fast reactive power change, and TBB static reactive power compensation is used for compensating stable loads with infrequent reactive power change of the system; fine adjustment can be achieved through combined compensation of the two, compensation precision is high, and the compensation effect is good.

The invention provides an isolation switch control device with a fault monitoring function, and relates to the technical field of electric power automation, and the device comprises an information collection module which collects the current information in real time during the operation of an opening and closing drive motor, and transmits the current information to a circuit protection module; the circuit protection module performs feature extraction on the current information in a mode of solving a signal waveform envelope line; whether the disconnecting switch has a fault is determined according to the current signal characteristics, and a control instruction is issued to the variable frequency driving module according to a fault result, or a key monitoring prompt is sent to the key monitoring module; the variable frequency driving module controls the operation state of the opening and closing driving motor according to the issued control instruction; and when the key monitoring module receives the key monitoring prompt sent by the circuit protection module, the monitoring frequency of the isolation switch is increased. According to the scheme, the abnormal state of the isolating switch can be monitored in the opening and closing process, so that serious accidents caused by faults of the isolating switch are reduced.

Proposed is a disconnector apparatus including a casing having therein a support ring and one side gear, and a clutch ring having a first clutch part disposed on an inner-diameter portion of the clutch ring at one side of the clutch ring facing one side gear, and a second clutch part disposed on one inner surface of the inner-diameter portion, in which the first clutch part engages with a third clutch part disposed on an outer-diameter portion of the support ring at one side of the support ring, and the second clutch part engages with a fourth clutch part disposed on one surface of the one side gear.

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.

A meter socket adapter may include an integrated whole-building disconnect switch configured to disconnect a building associated with the meter socket adapter from a utility grid, a distributed energy resource (DER) interface to connect a distributed energy resource (DER), and an energy management system (EMS) configured to monitor electrical current passing through the meter socket adapter and, based on the monitored current, actuate the whole-building disconnect switch.

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 relates to a GIS disconnecting switch mechanical fault identification method and device, and the method comprises the steps: obtaining bus structure parameters of a source side and a load side of a GIS disconnecting switch, and calculating bus electrical parameters according to the bus structure parameters; constructing a travel curve discrete time sequence according to the plurality of motion states of the moving contact of the GIS disconnecting switch; constructing a whole-process VFTO discrete time sequence based on the travel curve discrete time sequence, and tagging time sequence data in the whole-process VFTO discrete time sequence; extracting a plurality of transient characteristics from the whole-process VFTO discrete time sequence, and constructing a labeled sample set with a supervision model according to each transient characteristic and a corresponding label; and through the trained supervised model and the real-time whole-process VFTO discrete time sequence, identifying the mechanical fault of the target GIS isolation switch. According to the method, the supervised model is trained through the discrete time sequence based on the mechanical state of the GIS disconnecting switch, so that the accuracy of fault detection is improved.

The invention relates to a multi-electrode direct-current electric arc furnace, a submerged arc furnace power supply device and a smelting method, belongs to the technical field of industrial smelting, and aims to solve the problem of working condition of abnormal conductivity of furnace charge of the multi-electrode direct-current furnace. The device is composed of a phase-shifting transformer, a rectification module, a direct current conversion module, an isolation switch and other components, and all the components are connected according to a specific rule, so that a top electrode attribute conversion loop is formed in the device topology. By matching with the smelting method, cathode and anode attribute transformation of the multi-electrode direct current furnace top electrode can be realized, smelting can be performed through a top electrode loop under complex conditions of poor furnace charge conductivity and the like, and a normal production process can be recovered after a molten pool in the furnace appears and the furnace charge conductivity is enhanced, so that the abnormal fault processing time is shortened, and the production efficiency is improved. And the smelting efficiency of industrial smelting, especially in the fields of iron alloys and special steel, is improved.

The invention relates to the technical field of power electronic devices, in particular to a low-voltage direct-current circuit breaker, a fault protection method and a related device.The low-voltage direct-current circuit breaker comprises a through-flow branch, a transfer branch and an energy consumption branch which are connected in sequence; the through-current branch comprises an isolating switch and an MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) commutation switch which are connected in series; the transfer branch comprises a first power electronic switch group and a buffer branch which are connected in parallel; the energy consumption branch comprises a first metal oxide MOV, a second metal oxide MOV and a second power electronic switch group; the first metal oxide MOV is connected in parallel with the second power electronic switch group; and the second metal oxide MOV is respectively connected with the first metal oxide MOV and the second power electronic switch group. The technical problems that an existing hybrid direct current circuit breaker is not suitable for a low-voltage direct current system and the loss is high in the turn-off process are solved.

The invention discloses an electrified railway anti-misoperation outdoor high-voltage combined electric appliance device, which comprises an anti-misoperation spring energy storage device, an isolating switch linkage mechanism and a circuit breaker linkage mechanism, and is characterized in that the anti-misoperation spring energy storage device consists of an energy storage shaft, an energy storage spring and an energy storage transmission connecting rod; the anti-misoperation spring energy storage device is further provided with an energy storage limiting mechanism for preventing the energy storage shaft from rotating mistakenly after the energy storage spring stores energy, and an opening and closing trigger mechanism for tripping the energy storage limiting mechanism. The integrated spring energy storage transmission device has a mechanical interlocking function and can prevent misoperation, the integrated switch structure ensures firmness and mechanical reliability, connecting wires among equipment during dispersed installation are eliminated, the occupied area is reduced by more than 40% compared with traditional discrete arrangement, centralized maintenance is convenient, and the integrated switch structure is simple in structure and convenient to operate. And the overhaul and maintenance work efficiency is improved.

The embodiment of the invention provides a method and device for predicting the health state of a high-voltage isolation switch, a medium and a product, and is applied to the technical field of information. The method comprises the steps of obtaining current data generated by a high-voltage isolation switch in a preset time period, and performing data processing on the current data to obtain a measurement action current parameter; when the measured action current parameter is higher than the preset action current parameter, inputting the measured action current parameter into a pre-trained mapping relation model to obtain a predicted oxide film thickness and a predicted resistance value corresponding to the contact surface of the moving and static contacts of the high-voltage isolation switch; and based on the rated working parameters, the operation time, the predicted oxide film thickness and the predicted resistance value of the high-voltage isolation switch, calculating the residual life and the failure probability corresponding to the high-voltage isolation switch, and performing health state evaluation on the high-voltage isolation switch to obtain a health index corresponding to the high-voltage isolation switch. The technical effect of improving the maintenance efficiency of the high-voltage isolation switch is achieved.

The present application relates to a high-voltage AC disconnector, and relates to the technical field of disconnectors, which includes a base and a conductive mechanism, two insulating columns are arranged on the base, and the two insulating columns are respectively arranged on the left and right sides of the top of the base, and the installation positions of the two insulating columns are provided with installation grooves, and the installation grooves are provided with easy-to-disassemble fixing mechanisms, and the easy-to-disassemble fixing mechanisms include installation components and clamping components, and the installation components include installation sleeves and connecting columns, and the installation sleeves are fixedly arranged in the installation grooves, and the connecting columns are fixedly arranged at the bottom of the insulating columns, and the connecting columns are adapted to the connecting columns. The present application has a reasonable structure, and the present application has a simple and convenient disassembly process, avoids the need to use external tools for operation, and improves the practical effect.

The invention relates to the field of switch cabinet equipment, in particular to a combined electric appliance switch cabinet with linkage interlocking, which comprises a cabinet body, the cabinet body is divided into an equipment chamber, an operation chamber and an electric control chamber by plates, the equipment chamber is sequentially provided with an isolating switch, a circuit breaker and a grounding switch from top to bottom, the operation chamber is internally provided with a linkage interlocking device, and the electric control chamber is internally provided with a linkage interlocking device. Electric control equipment is arranged in the electric control chamber; the linkage interlocking device comprises an installation support, an isolation switch control shaft, a circuit breaker control shaft and a grounding control shaft, the isolation switch control shaft rotatably controls opening and closing of an isolation switch, the circuit breaker control shaft rotatably controls opening and closing of a circuit breaker, and the grounding control shaft rotatably controls opening and closing of a grounding switch. The problem that safety accidents are easy to occur due to the fact that a traditional disconnecting switch, a traditional circuit breaker and a traditional grounding switch are operated independently is solved, the switch cabinet equipment can have a stable safety interlocking structure, and when one switch is switched on, other switches cannot be switched on or switched off.

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 invention relates to an isolation switch and a control method thereof. The isolating switch comprises a management system (100) which judges the opening and closing state of the isolating switch by receiving a contact signal of the isolating switch (200); a processing unit (210) which receives the control signal from the management system (100) and transmits a driving signal; the driving motor (230) is used for controlling the executing mechanism (240) to act according to the driving signal; the executing mechanism (240) is driven by the driving motor (230) to perform opening and closing actions of the isolating switch (200); the current sampling unit (250) is used for sampling a current signal of the driving motor (230) and feeding back the sampled current to the processing unit (210), and in the processing unit (210), the actual position of the execution mechanism (240) is judged according to a comparison result of the sampled current and a threshold value.

The present invention provides a two-in and two-out DC 1500V disconnect switch, comprising: two contact modules, arranged side by side with the operation module, and multiple modules are assembled by fasteners. The contact module includes a contact module body and a contact assembly arranged inside the contact module body; an operation module, provided with a manual operation mechanism and an electric operation mechanism for controlling the opening or closing of the contact module. In this way, modularization is achieved, the structure is simple, and the assembly is fast and convenient. Moreover, the operation module is provided with a manual operation mechanism and an electric operation mechanism for controlling the opening or closing of the contact module, that is, the opening or closing can be realized manually and electrically, which is beneficial to people's operation.

An electrical transmission safety system for connection of direct current (DC) power from a DC power source to a load comprises: a connection from the power source to the load, the connection comprising a positive terminal and a negative terminal; a first solid state switch electrically connected between the power source and one of the positive terminal and negative terminal; and a switch-control isolation block comprising a first optocoupler, the first optocoupler providing electrical isolation from the power source for generating a first isolated switch-control signal in response to a switch-control input signal, the switch-control isolation block connected to provide the first isolated switch-control signal to the first solid state switch to thereby control an ON or OFF conduction state of the first solid state switch and corresponding current flow between the power source and the load through the one of the positive terminal and negative terminal.

The utility model discloses an intelligent vacuum circuit breaker, which comprises an operating main shaft, an isolating switch shaft, a solid-sealed polar pole and a grounding switch, the operating main shaft and the isolating switch shaft are respectively driven to rotate by a circuit breaker electric operating mechanism and an isolating switch electric operating mechanism, and an insulating shell of the solid-sealed polar pole is provided with a current sensor and a voltage sensor. The operating main shaft drives a breaker moving contact and a breaker static contact to be in contact or separated through an insulating pull rod, the insulating pull rod is provided with a pressure sensor, the breaker static contact is connected with one end of an isolation switch disconnecting link, and an isolation switch shaft drives the other end of the isolation switch disconnecting link to be in contact or separated from an isolation static contact. The circuit breaker electric operating mechanism is provided with a remote communication antenna and a control module. The purpose of the utility model is to provide an intelligent vacuum circuit breaker, which enables a 35kV prefabricated substation to completely realize remote control, state measurement and health monitoring, improves the operation efficiency, and realizes remote control of the health state of equipment.

The invention belongs to the field of low-voltage switches, and particularly relates to a kick structure of an isolating switch and the isolating switch, and the kick structure comprises a shell assembly, a kick piece, a linkage piece, an energy-gathering elastic piece, a closing limiting piece and an opening limiting piece. Different from rotary motion of a kick piece and a linkage piece in an existing conventional kick mechanism, the kick piece and the linkage piece of the kick mechanism do linear motion, the energy-gathering elastic piece adopts a pressure spring limited between the kick piece and the linkage piece, and the energy-gathering elastic piece can only do telescopic motion in the first direction X to store / release energy; the opening limiting piece or the closing limiting piece limits the kick piece so that the kick piece can not move to the opening position or the closing position, and the linkage piece moves relative to the kick piece to drive the energy-gathering elastic piece to compress and store energy and moves until the linkage piece pushes the opening limiting piece or the closing limiting piece to unlock. The kick piece quickly acts to the opening position or the closing position under the energy release of the energy-gathered elastic piece, the action is reliable, and the overall size is small.

The invention discloses a large-current environment-friendly ring main unit which comprises an isolating switch and a circuit breaker structure, the isolating switch is located above the circuit breaker structure, the isolating switch and the circuit breaker structure are fixedly connected, the isolating switch comprises a moving knife assembly, the moving knife assembly comprises a moving knife and a moving knife holder, the moving knife is rotationally connected with the moving knife holder, the moving knife is provided with segmented contacts, and the moving knife is connected with the circuit breaker structure. The structure of the conductive copper piece is optimized, the effective lap joint number between lap joint faces and the heat dissipation area are increased, the heat dissipation efficiency is effectively improved, and the 1250A * 1.1 temperature rise test requirement is met in dry air.

The invention discloses a vertical open type isolating switch, which comprises a static contact seat, a static contact, a static contact, a static contact and a static contact, and is characterized in that the static contact seat is provided with an open slot; a tool arm base; the tool arm driving shaft is movably mounted on the tool arm base; the tool arm moving seat is hinged to the tool arm base; the conductive tool arm is mounted on the tool arm moving seat and can rotate along with the tool arm moving seat until the conductive tool arm is clamped into the open slot, a radial bulge structure is arranged on the peripheral wall of the conductive tool arm, and the conductive tool arm can rotate along the axis of the conductive tool arm relative to the tool arm moving seat; and the transmission mechanism is used for connecting the tool arm driving shaft with the conductive tool arm in a transmission manner, and can enable the radial bulge structure on the conductive tool arm to tension the open slot after the conductive tool arm is clamped into the open slot. When the conductive cutter arm starts to enter the open slot, the radial bulge structure does not tension the two opposite side walls of the open slot, so that the resistance is not large when the conductive cutter arm enters and exits the open slot, and after the conductive cutter arm is clamped into the open slot, the radial bulge structure continues to rotate and is gradually opened to tension the two opposite side walls of the open slot, so that the conductive cutter arm is in tight contact, and sufficient contact force is ensured.

The invention discloses an isolating switch opening and closing state detection method, which comprises the following steps of: 1, acquiring a plurality of sample pictures of a transformer substation to obtain a data set, and dividing the data set to obtain a training set; in addition, an improved InceptionV3 model is constructed; 2, training the improved model by adopting training set data, and replacing a full connection layer, a Softmax layer and an output layer of the trained improved model by adopting a full connection layer, a Softmax layer and an output layer in an untrained improved model; then, performing fine tuning training on the replaced improved model to obtain an image classification network; and step 3, inputting a to-be-detected transformer substation picture into the image classification network to obtain an isolation switch opening and closing state identification result. The method has the advantages of being high in speed, better in recognition effect and higher in accuracy when detecting the opening and closing states of the disconnecting switch.

The invention belongs to the technical field of electromechanical engineering and power transmission and transformation, and particularly relates to a multi-loop gas insulation power pipe gallery, a power transmission system and a control method. The multi-loop gas insulation electric power pipe gallery comprises a controller and a pipe gallery main body. The pipe gallery main body comprises a pipe gallery outer wall, two bus bars installed in the pipe gallery outer wall, a plurality of connecting buses, a standby pipeline bus and a plurality of single-phase pipeline buses. The standby pipeline bus, the two bus bars and the gas insulation pipeline bus assemblies are fixedly installed in the outer wall of the pipe gallery through fixing structures. The standby pipeline bus is connected between the two bus bars; the single-phase pipeline bus comprises a first connecting section, a first main body section and a second connecting section which are sequentially arranged along the axial direction; the two ends of each first main body section are respectively connected with the two bus bars through a connecting bus bar, the two ends of each first main body section are respectively provided with an isolating switch, and each connecting bus bar is provided with an isolating switch; and the controller is used for controlling the on-off of each isolating switch.