145 results about "Recloser" patented technology

The invention discloses an intelligent opening and closing method and system for a reclosing circuit breaker based on an electromagnet, and relates to the field of intelligent control, and the method comprises the steps: monitoring a line current in real time, comparing the line current with a preset threshold value, and carrying out the opening after the overcurrent abnormality is detected. Entering a first time delay stage after opening, comprehensively evaluating the states of the circuit breaker and the circuit, and constructing a dynamic weight index system to calculate an evaluation score; if the score exceeds a threshold value, closing is carried out after time delay is finished, otherwise, an alarm is triggered. And entering a second delay stage after switching on, continuously monitoring the electric parameters and establishing an anomaly judgment mechanism, forming a closed-loop protection process of monitoring, switching off, evaluating, switching on and re-monitoring, and realizing intelligent linkage of overcurrent protection and state self-adaption. The method has the advantages that through real-time line electric parameter monitoring, multi-dimensional state evaluation and an intelligent decision-making mechanism, precise opening and closing of the circuit breaker are achieved, the power supply reliability is improved, the power failure time is shortened, and the misoperation risk is reduced.

A high-efficiency power electronic voltage regulating device with a reclosing function is connected in series with a low-voltage line and comprises a silicon controlled bypass switch, a series power unit, a parallel power unit, an input filtering unit, an output filtering unit, a controller, a topology change-over switch, a mechanical bypass switch, an input switch, an output switch and the like. Under a normal working condition, power is supplied to a user through the silicon controlled bypass switch; through an AI pre-judgment technology, a power grid voltage drop or increase trend is pre-judged, and a series power unit is conducted in advance; a topology change-over switch is connected to form a boost or buck topology, and when the voltage of a power grid is too low or too high, the normal voltage of a user is ensured through PR closed-loop control; when the rear-end line / load breaks down, reclosing control is carried out; and voltage upper and lower limits are adjusted remotely. The device utilizes the AI pre-judgment technology, has the characteristics of stable voltage, no need of input / output commutation and the like, solves the problems of over-high and over-low voltage and automatic reclosing in fault, and improves the high power supply quality and the power supply reliability of users.

The invention relates to the technical field of circuit breakers, and discloses a switching-on and switching-off structure of a reclosing circuit breaker, which comprises a shell, a static contact, a moving contact, a switching-on and switching-off knife switch and a switching-on assembly, and the static contact and the moving contact are arranged in the shell. The closing assembly comprises a driving motor and a transmission part arranged between the opening and closing knife switch and an output shaft of the driving motor, the driving motor can drive the transmission part to act, and the transmission part can drive the opening and closing knife switch to act. When an instantaneous fault of a circuit where the circuit breaker is located disappears, the driving motor drives the transmission part to act and further drives the opening and closing knife switch to act, direct driving of a power source is achieved, the mechanical structure is simplified, the fault probability caused by complex mechanical interlocking and lock catch abrasion and jamming is reduced, the mechanical response time is shortened, and the service life of the circuit breaker is prolonged. And the execution speed of the automatic reclosing is improved, so that the intelligent power grid can recover power supply more quickly.

The invention discloses an overhead line fault diagnosis method, system and device based on space vector conversion and a storage medium, and relates to the technical field of intelligent power distribution, and the method comprises the steps: collecting the normal operation three-phase current data of an overhead power distribution line, and constructing a steady-state feature model; three-phase current data is collected in real time and converted into a space vector sequence, the Euclidean distance between a vector end point and a model center is calculated, and instantaneous offset is extracted. Integrating the offset in a sliding window, calculating a phase rotation rate, generating a multi-dimensional deviation tensor, inputting the multi-dimensional deviation tensor into a fusion function to obtain a misconstruction score, and normalizing the misconstruction score to obtain a misconstruction index; comparing the index with a threshold value, if the index exceeds the threshold value, determining that the disturbance is external transient disturbance, and adjusting the sampling frequency of the current sampling device; according to the method, interference can be effectively identified in a special electromagnetic environment, misjudgment of diagnosis is avoided, maloperation of a protection device is reduced, reclosing operation is guaranteed, and the fault diagnosis accuracy and robustness of a power distribution system are improved.

The invention relates to the technical field of circuit breakers, in particular to a double-connecting-rod reclosing mechanism and a circuit breaker, and the double-connecting-rod reclosing mechanism comprises a driving assembly, a rotating part, a first connecting rod, a second connecting rod, a fixed plate and a sliding block, the driving assembly is used for driving the rotating part to rotate, and the first connecting rod comprises a connecting end and a transmission end; the connecting end is eccentrically and rotationally connected to the rotating piece, the transmission end is rotationally connected with the second connecting rod, the fixing plate and the sliding block are both located on one side of the rotating piece, the sliding block can slide in the direction close to or away from the rotating piece and is used for driving a circuit breaker handle to rotate, a chute is formed in the fixing plate, and the sliding block can slide in the chute in the direction close to or away from the rotating piece. The second connecting rod comprises a sliding end and a rotating end, the sliding end slides along the inclined groove, the rotating end is rotationally connected with the sliding block, and the transmission end is located between the sliding end and the rotating end.

This invention relates to the field of DC circuit breakers, and discloses a thyristor-type DC circuit breaker and its control method. The DC circuit breaker structure is a thyristor T... m1 Anode-connected thyristor T m2 The cathode forms the A terminal of the circuit breaker, T m1 Cathode connection T m2 The anode of the thyristor forms the B terminal of the circuit breaker; the thyristor T p1 anode, thyristor T p2 The cathode is connected to terminal A; T p1 Cathode connection T p2 After anode, it passes through resistor R in sequence. g Switch RCB g Grounding; T p1 Cathode connection T p2 After the anode, it also passes through inductor L p Capacitor C is connected to terminal B; one end of the surge arrester MOV is connected to terminal T. p1 The cathode is connected to the first terminal, and the other end is connected to the B terminal. This invention has a simple structure and significant cost advantages; under normal operating conditions, only a single thyristor is conducting, resulting in extremely low losses and extremely high circuit breaker efficiency. Combined with control methods, it can actively and reliably connect or disconnect bidirectional operating current or bidirectional fault current; it can also achieve fast reclosing functionality.

The invention discloses a flexible DC power transmission line adaptive reclosing method based on coupling voltage analysis, and the method comprises the steps: collecting a coupling voltage signal of a non-fault pole after determining that a single-pole grounding fault occurs in a flexible DC power transmission line and a fault line is removed; adopting a CEEMDAN algorithm to extract a residual term component of the signal; carrying out linear fitting on the residual term component and calculating an included angle characteristic quantity; whether the included angle characteristic quantity meets a preset included angle condition or not is judged, if yes, it is judged that the single-pole grounding fault is an instantaneous fault, and the circuit breaker is controlled to execute reclosing operation to restore power supply; and if not, determining that the single-pole grounding fault is a permanent fault, and locking and reclosing. According to the method, the dynamic trend characteristics of the coupling voltage after the fault are analyzed and the included angle criterion is constructed, so that the technical problems of insufficient quick action, poor anti-interference capability and easiness in causing secondary impact of an existing self-adaptive reclosing method in single-pole grounding fault property judgment are solved.

The invention discloses a rapid and reliable reclosing switch, relates to the technical field of vacuum circuit breakers, and aims to solve the problems that an existing vacuum circuit breaker is mainly driven by an electromagnetic operating mechanism to complete closing and opening actions, but the premise of realizing stable closing and opening by the electromagnetic operating mechanism is stable and continuous output of current, and the operation is inconvenient. In order to form a stable magnetic field to maintain switching-on and switching-off actions and solve the technical problem that when current fluctuates, a switch is prone to tripping without permission, the switch comprises symmetrically arranged bases, a U-shaped shell and a frame-shaped connecting piece are detachably connected between the bases, and an insulating substrate is detachably installed at the top of the inner wall of the U-shaped shell. Opening and closing switch assemblies are detachably installed at the bottom of the insulating substrate at equal intervals, an opening and closing indication assembly is fixedly arranged on one side of the bottom of the insulating substrate, and an opening handle assembly is movably installed in one side of the U-shaped shell. The invention has the advantage of improving the stability and reliability of closing.

The invention provides a low-conduction-loss direct-current circuit breaker with a fault type judgment function and a judgment method, and belongs to the field of circuit fault detection. In order to solve the problems that in an existing hybrid high-voltage direct-current circuit breaker, the conduction loss of a load commutation switch is high, and a circuit device does not have the fault type discrimination capability, the direct-current circuit breaker comprises a load branch, a multifunctional branch, a main breaking branch and an energy absorption branch. The discrimination method comprises the following steps: in a normal operation mode, a load branch is conducted; the capacitor pre-charging mode operates in parallel to charge the capacitor C; when the circuit is short-circuited, a thyristor turn-off mode is entered, and the T1 is turned off; and entering a load commutation mode, converting the fault current to a main breaking branch, introducing an energy absorption branch, and entering an energy absorption mode. And injecting a controlled RLC oscillation current, analyzing current waveform characteristics to judge a direct current fault type, and performing reclosing or maintenance of the circuit breaker according to the analyzed direct current fault type.

The invention discloses a self-adaptive reclosing control method and system for a distribution automation feeder terminal, and relates to the technical field of intelligent power distribution, and the method comprises the steps: carrying out the real-time monitoring of a distribution network line, obtaining a line monitoring sequence, synchronously obtaining a terminal state sequence, carrying out the abnormal interference correction of a terminal, and obtaining a line operation feature sequence; building a reclosing locking detection space, and inputting the line operation characteristic sequence into the reclosing locking detection space to obtain a reclosing locking coefficient; if the reclosing locking coefficient is smaller than the reclosing locking threshold value, multi-dimensional fault prediction is carried out on the distribution network line, a line fault feature graph is generated, protection tripping probability prediction is carried out on the distribution network line, and the line protection tripping probability is determined; and performing self-adaptive reclosing control by combining the line protection tripping probability and the feeder terminal. The technical problems that reclosing locking judgment is inaccurate and reclosing control lacks adaptivity in the prior art are solved, and the technical effect of improving reclosing action decision accuracy and reliability is achieved.

This invention discloses a recloser controller testing device in the field of recloser technology. It includes a testing mechanism for testing the recloser controller box, with test lines connected to the outside of the testing mechanism and aligned with the recloser controller box. It also includes a testing platform fixedly mounted on the testing mechanism. A display screen and a switch assembly are installed on the outside of the testing mechanism. A lifting frame for raising the recloser controller box is fixedly connected to the upper side of one side of the testing platform, while a second motor for driving the lifting frame is fixedly connected to the bottom of the testing platform. An adjusting frame is also fixedly connected to the bottom of the testing platform, with symmetrically mounted limiting plates on the upper end of the adjusting frame for clamping and fixing the recloser controller box. This invention, by setting up a dedicated testing platform for factory quality and functional testing of the recloser controller, has a simple and reasonable overall structure and is easy and convenient to operate, effectively meeting the production needs of recloser controllers.

The invention belongs to the technical field of micro-grid protection, and particularly relates to a micro-grid integrated protection method based on multi-criterion self-adaptive recognition, which comprises the following steps: in a micro-grid, constructing a three-layer control architecture of a perception layer, a decision layer and an execution layer; the sensing layer is used for collecting electrical quantity data of the micro-grid in real time, and the current operation mode of the micro-grid is recognized in real time on the basis of the power flow direction and frequency deviation of a grid-connected point in the decision-making layer; in a decision-making layer, a multi-dimensional feature fusion algorithm is adopted to fuse fault feature parameters in a grid-connected mode or an island mode, and a fault state is judged; the decision-making layer identifies the current operation mode of the micro-grid, generates an instruction and issues the instruction to the execution layer, and the execution layer executes mode switching; and when the fault is judged to occur, the fault position is positioned and isolated, reclosing recovery is tried for a transient fault, and power supply of a non-fault area is guaranteed by a permanent fault adjustment operation strategy. According to the invention, accurate fault identification and stable control in the grid-connected / island mode switching process can be realized.

The utility model belongs to the technical field of high-voltage power equipment, and particularly relates to a bistable recloser, which comprises a welding base assembly, reclosers, a bistable operating mechanism and a locking mechanism, the welding base assembly is connected with a plurality of reclosers, the bistable operating mechanism is arranged in the welding base assembly, and the locking mechanism is connected with the reclosers. The bistable operating mechanism is movably connected with the reclosers, and a locking mechanism is arranged at the tail end of the bistable operating mechanism and fixedly mounted on the welding base assembly. When in use, through collinear transmission of the driving pull rod and the movable iron core driving shaft, the transmission loss is reduced, manual opening is realized by using the locking structure, maintenance by a worker is facilitated, double-layer locking is performed on the recloser, and product safety accidents caused by misoperation of the worker are avoided.

The invention provides a recloser hanging spring tool and belongs to the field of high-voltage switchgear assembly.The recloser comprises a shell, a pull rod square shaft, a hanging spring shaft and an opening spring, one end of the opening spring is connected with the shell, the other end of the opening spring is provided with a hanging spring plate, the hanging spring plate is provided with a first pin shaft hole and a second pin shaft hole at intervals, the first pin shaft hole is used for connecting the hanging spring shaft, and the second pin shaft hole is used for connecting the hanging spring shaft. In addition, the spring hanging tool comprises a base detachably fixed to the shell and a first transmission shaft rotatably installed on the base, the first transmission shaft is connected with a driving motor, a first gear is fixed to the first transmission shaft, and the first gear is meshed with a first rack. The first rack is in sliding fit with the base through a first guide mechanism perpendicular to the hanging spring shaft, and a first hanging spring pin matched with the second pin shaft hole is fixed to the first rack through a first connecting piece. The problems that in the prior art, hanging spring assembling consumes manpower, and the assembling efficiency is low are solved. The technical effects are that manpower is saved, and the assembling efficiency is improved at the same time.

The application provides a flexible direct current transmission line single-end fault distance measurement method based on frequency domain analysis, which comprises the following steps: collecting a reclosing end real-time voltage value and a reclosing end real-time current value, determining equivalent resistance values of each point along a line based on the reclosing end real-time voltage value and the reclosing end real-time current value; performing frequency spectrum analysis on the equivalent resistance values of each point along the line to generate frequency spectrums of each point along the line; respectively calculating a center of gravity frequency of each point along the line based on the frequency spectrums of each point along the line; and sorting the center of gravity frequencies of each point along the line, and determining a fault distance by selecting a line position corresponding to the smallest center of gravity frequency. The method realizes flexible direct current transmission line single-end fault distance measurement, and improves positioning accuracy and stability of flexible direct current transmission line single-end fault distance measurement.

The utility model relates to the technical field of reclosing circuit breaker, specifically relates to a heat dissipation structure for reclosing circuit breaker, including circuit breaker, the one side fixedly connected with backplate of circuit breaker, the top and bottom of backplate are installed with a plurality of connecting pieces respectively, the one side of circuit breaker is provided with the heat dissipation assembly for the heat dissipation of the inside and connecting piece of circuit breaker, and the heat dissipation assembly includes the cover plate fixedly connected in the one side of backplate, the utility model discloses the heat dissipation assembly, the cover plate fixed in the one side of backplate and a plurality of radiating fins, the radiating fin is arranged along the cover plate surface, forms the large -area heat dissipation area, and the convection heat dissipation effect is improved, and at the same time, sets up S -shaped liquid pipe in every radiating fin, forms the dense liquid cooling channel structure, and the coolant can continuously circulate and take away the heat, avoids the local overheating phenomenon, and compared with traditional natural air cooling, this liquid cooling structure has higher heat conduction efficiency and temperature control precision, especially suitable for the stable operation demand of high frequency reclosing, high load circuit breaker.

The application discloses a primary and secondary fusion intelligent circuit breaker on a column, which comprises a fault detection module, a protection action module, a reclosing module and an information reporting module. The fault detection module collects multi-dimensional electrical quantities through current and voltage transformers, judges the fault and identifies the type in combination with dynamic normal range and duration threshold; the protection action module calculates the fault distance based on the corrected impedance, determines whether to act in combination with the current direction and the protection range, and selects the protection level according to the fault severity; the reclosing module dynamically sets the observation time window, distinguishes the transient or permanent fault through the retest verification mechanism, and adaptively adjusts the reclosing strategy; the information reporting module uploads the fault related information. The application solves the problems of the traditional circuit breaker, such as high misjudgment rate, poor protection selectivity, rigid reclosing logic and the like, and significantly improves the accuracy, speed and self-healing ability of the power distribution network fault processing.

The invention relates to the technical field of electric energy meter composite detection, in particular to an electric energy meter composite environmental influence test device, method and system. The test device comprises a high and low temperature damp heat test box, a multifunctional integrated detection device, a fast transient pulse train generator and a lightning stroke surge generator, the output end of the test device is connected to a power port and a signal port of a to-be-tested electric energy meter, and the four parts are controlled to work cooperatively. The stress applying device is used for synchronously or alternately applying high-temperature and high-humidity environment stress, electromagnetic interference stress, actual load stress and reclosing operation stress to the to-be-tested electric energy meter. The multi-stress coupling real working condition reproduction is realized on the hardware level, the authenticity and severity of the test are greatly improved, potential defects which are difficult to expose in a single test can be excited, and the method has the advantages of high authenticity, comprehensive detection and high practicability.

The invention relates to the technical field of high-voltage switch equipment, and particularly provides a solid-sealed polar pole for a three-phase intelligent recloser, which comprises a vacuum arc-extinguishing chamber, a main conductive rod, a solid-sealed body and an external encapsulation, the outer part of the main conductive rod is coaxially sleeved with a voltage sensor, and the outer part of the main conductive rod at a lower wire outlet end is also coaxially sleeved with a current transformer. The concentricity error of the voltage sensor and the main conductive rod is within + / -0.5 mm; according to the invention, the insulation sleeve, the support ring and the heat conduction rod with the inclined plane are arranged, automatic centering is realized and the concentricity error of the voltage sensor and the main conduction rod is controlled by utilizing the matching of conical surfaces during assembly, and meanwhile, the stress generated by epoxy resin curing shrinkage glue is resisted through rigid mechanical locking, so that the stability of the installation position is ensured; therefore, the accuracy of the final measurement result is guaranteed, the heat conduction rod can form an active heat dissipation path at the same time, the change of the dielectric property of the sensor caused by high temperature is avoided, and the accuracy of the measurement result is further guaranteed.

This invention discloses an adaptive reclosing method, system, and electronic equipment for power transmission lines in winter based on evidence theory fusion. The method includes calculating the posterior probabilities of different subdivided fault causes under corresponding weather characteristics during winter power transmission line faults using a Bayesian formula model. These probabilities are then used as weights and incorporated into the fault cause identification and classification results output by a pre-constructed waveform image recognition model. Major fault categories are further subdivided to obtain the identification probabilities of different subdivided fault causes. The posterior probabilities and identification probabilities are fused using a D-S evidence theory fusion model to obtain the fused probabilities of different fault causes. Based on these probabilities, the reclosing operation mode, reclosing time, and number of reclosing operations are dynamically adjusted. Compared to existing technologies, this invention significantly improves the accuracy of fault cause identification and enables the reclosing system to dynamically adjust according to weather changes and fault analysis, providing effective decision support for adaptive reclosing of power transmission lines in winter.

This application provides a reclosing control method, device, storage medium, and electronic device, relating to the field of control technology. The method is applied to a power distribution system, which includes a power source and a reclosing circuit breaker. The input terminal of the reclosing circuit breaker is connected to the power source, and the output terminal is connected to the load. The method includes: acquiring electrical parameters and load characteristic data of the power distribution system; determining whether an anomaly has occurred in the power distribution system based on the electrical parameters; if an anomaly is determined based on the electrical parameters, controlling the reclosing circuit breaker to perform a tripping operation to disconnect the power source from the load; inputting the electrical parameters and load characteristic data within a preset time window before the anomaly occurs into a pre-trained fault type identification model to obtain a fault type identification result; and, if the fault type identification result indicates a momentary fault on the power source side or an abnormal disturbance on the load side, controlling the reclosing circuit breaker to perform a reclosing operation according to the control strategy corresponding to the fault type identification result. This method enables precise control of the reclosing circuit breaker.

The utility model discloses an operating mechanism and a circuit breaker, and relates to the technical field of electrical switches, and the operating mechanism comprises a motor, a gear and a linkage cover. The motor comprises an output shaft. The gear is arranged on the output shaft in a sleeving mode and provided with at least one linkage rod extending in the axial direction. The linkage cover is fixedly arranged on the output shaft in a sleeving mode and provided with at least one boss, and the at least one boss corresponds to the at least one linkage rod. The boss comprises an abutting face and a guiding face. The abutting face is used for pushing the linkage rod to drive the gear to rotate when the output shaft rotates in the forward direction. The guide face is used for guiding the linkage rod to slide through the boss when the output shaft rotates reversely. The rotating path of the boss coincides with the rotating path of the linkage rod, and the guiding direction of the guiding face is matched with the reverse rotating direction of the output shaft. According to the operating mechanism and the circuit breaker provided by the invention, the reliability of the operating mechanism can be improved, so that the working stability of the reclosing circuit breaker is improved.

This invention specifically relates to a fault location method for distribution lines based on a primary and secondary integrated pole-mounted circuit breaker, falling within the field of distribution line fault detection and location technology. The method includes: after the primary and secondary integrated circuit breaker detects a line fault and trips, it classifies the fault type using edge computing, blocks conventional reclosing, and completes hardware reset and line parameter preloading before distance measurement. In this invention, the phase-selective closing function of the primary and secondary integrated circuit breaker actively injects a standardized high-frequency transient excitation signal, avoiding the randomness problem of the traditional traveling wave method relying on natural fault traveling waves, thus improving the signal-to-noise ratio and feature saliency of the transient signal. Simultaneously, the core of the distance measurement relies on the transient oscillation frequency, which is dominated by the line inductance and capacitance and minimally affected by high-resistance grounding resistance, naturally adapting to high-resistance fault scenarios. Furthermore, the Prony algorithm's accurate extraction of transient parameters and iterative correction strategy for transition resistance solve the problem of large errors in high-resistance scenarios using traditional impedance methods.

The application discloses a coupled inductance type ZSCB based on topology switching and a reclosing-rebreak method thereof, and the ZSCB comprises a circuit breaker topology and a control circuit. DC The anode of the thyristor T is connected with a direct current power supply V DC The cathode is connected with one end of the inductor L1, the other end of the inductor L1 is connected with one end of the inductor L2, the other end of the inductor L2 is connected with a load; S1 and S2 are connected in series and then connected in parallel between the two ends of T and L1, wherein the drain of S1 is connected with the anode of T, and the source of S2 is connected with the connection point of L1 and L2; S3 and S4 are connected in series and then connected with the source of S2 at one end and V DC The other end of the capacitor C is connected with the connection point of S3 and S4; the control circuit changes the connection mode of the capacitor before each reclosing, so that the capacitor voltage can exactly meet the required condition for the next rebreak, and the reclosing-rebreak under permanent fault is realized.

The application provides a distributed line selection and positioning method, which synchronously and high-speed collects zero sequence voltage, zero sequence current and / or three-phase current on each power supply section, carries out zero sequence transient energy method and / or three-phase current transient correlation method analysis, determines a grounding line and positions a grounding fault section; each power supply section on the grounding line is differentially delayed and tripped by a power receiving end phase power supply end, when the fault section is tripped and the fault disappears, all power supply sections before the fault section stop timing, after the fault section isolation time reaches, the power supply of the fault section is restored through reclosing, if the fault is a transient fault, the power supply of the line on the fault section can be restored; if the fault is a permanent fault, the fault section is removed again through post-acceleration, and the permanent isolation of the fault is realized. The application realizes accurate positioning and reliable isolation of a single-phase grounding fault section, guarantees the reliability and safety of power supply, and improves the stability of power distribution network operation.

A system and method for isolating a fault in a power distribution network. The network includes a power line, a plurality of transformers electrically coupled to and positioned along the power line, and a recloser coupled to the power line. Each transformer has a unique address identifying the transformer and includes a source side switching device at an upstream side of the transformer and a load side switching device at a downstream side of the transformer. The method includes learning the address by each transformer of its immediate neighbor transformers, detecting overcurrent by some of the switching devices as a result of the fault, detecting loss of voltage by some of the switching devices and sending clear to close messages to selectively open and close certain ones of the switching devices using the transformer addresses to limit the number of switching devices that are operated and to isolate the fault.

This utility model relates to the field of road control equipment technology, specifically to a multi-functional environmental control cabinet, including a control cabinet body, a main control module, and a power management module, an automatic reclosing device, a rail fuse, an alarm, and an environmental data acquisition module electrically connected to the main control module. This utility model relates to the field of intelligent equipment operation and maintenance and power control technology, and is particularly suitable for multi-functional environmental control cabinets providing comprehensive operation and maintenance support for various equipment and systems in complex outdoor environments such as highways, safe cities, Skynet projects, and intelligent transportation. Its comprehensive environmental monitoring and alarm functions can accurately and in real-time grasp the operating environment status of equipment, promptly respond to various environmental anomalies, effectively avoid equipment failures caused by environmental factors, ensure stable equipment operation, and reduce operation and maintenance costs and equipment damage risks.

The utility model discloses a small outdoor vacuum three-phase recloser, belongs to the technical field of vacuum three-phase reclosers, and solves the problem that the vacuum three-phase recloser cannot perform normal on-off action when the magnetism of a permanent magnetic mechanism is gradually weakened due to high temperature and a spring mechanism loses elasticity due to aging. Comprising a shell and a vacuum arc-extinguishing chamber fixedly connected to the top surface of the shell and communicated with the shell. The guide piece and the sliding rod are controlled through the driving motor, height adjustment of the hinge piece and the movable guide rod is achieved, when the sliding rod moves, the sliding rod and the anti-collision spring are controlled through the adjusting end block and the buffer block to relieve impact, and the screw moves to drive the threaded sleeve to rotate through the thread lead angle design of the screw and the threaded sleeve. And meanwhile, the displacement of the sliding rod drives the V-shaped plate and the adjusting shaft, the driving sheet is pulled through the adjusting spring, and the counter is driven to record the on-off frequency.

The invention discloses a reclosing switch and a vacuum circuit breaker, relates to the technical field of vacuum circuit breakers, and aims to solve the problems that an existing vacuum circuit breaker is mainly driven by an electromagnetic operating mechanism to complete switching-on and switching-off actions, but the premise of realizing stable switching-on and switching-off by the electromagnetic operating mechanism is stable and continuous current output; in order to form a stable magnetic field to maintain switching-on and switching-off actions and solve the technical problem that when current fluctuates, a switch is prone to tripping without permission, the switch comprises symmetrically arranged bases, a U-shaped shell and a frame-shaped connecting piece are detachably connected between the bases, and an insulating substrate is detachably installed at the top of the inner wall of the U-shaped shell. Opening and closing switch assemblies are detachably installed at the bottom of the insulating substrate at equal intervals, an opening and closing indication assembly is fixedly arranged on one side of the bottom of the insulating substrate, and an opening handle assembly is movably installed in one side of the U-shaped shell. The device has the advantage that the switch is prevented from tripping without permission after being switched on.

The application relates to the technical field of electrical automation control, and discloses a permanent magnet recloser controller for capacitor power supply and a circuit design method thereof. The permanent magnet recloser controller comprises: a multi-stage capacitor power supply circuit which controls the combination of three-stage capacitors through an intelligent switching switch; an adaptive current detection module which generates a power prediction value by using a Hall sensor and a sliding window algorithm; a dynamic power management circuit which comprises a switching power supply, a super capacitor and a lithium battery unit; a permanent magnet mechanism driving circuit which generates a pulse signal through an IGBT; and an intelligent reclosing control module which performs differential control according to fault characteristics. The application solves the problems of the permanent magnet recloser controller for capacitor power supply in the prior art, such as unstable power supply under variable load conditions, lack of adaptability of power management, poor reliability of the permanent magnet mechanism driving, and fixed reclosing strategy.