301 results about "Electrical protection" patented technology

The invention relates to the technical field of electrical protection, and discloses an electrical equipment protection device with a fault early warning function, which comprises a shell, a circuit board, a sensor group, an alarm component, a main control unit, an early warning execution module and a protection execution module. A cover plate with a visible glass window is arranged in front of the shell, and a display and control buttons are arranged on the circuit board. The sensor group collects operation parameters of electrical equipment, and the main control unit compares a preset threshold value, analyzes historical data, identifies abnormity, predicts fault risks and generates an early warning or protection instruction. And the early warning execution module triggers sound-light alarm and remote communication according to the instruction, and the protection execution module executes operations such as power failure. The electrical equipment protection device with the fault early warning function has the advantages that the operation parameters of the electrical equipment are monitored in real time, the advanced fault analysis algorithm is used for carrying out risk pre-judgment, and an early warning and protection mechanism is triggered in time.

The invention relates to the technical field of electrical safety protection devices, in particular to a branching buckle type new energy fuse. The fuse comprises a tube body which is provided with a through accommodating space; the branching buckle assembly comprises a first branching buckle and a second branching buckle which are embedded into the two ends of the pipe body respectively; the fuse assembly comprises a plurality of fuse parts and supporting parts which are in one-to-one correspondence, the fuse parts are wound on the supporting parts and penetrate through the accommodating space, and the two ends of the fuse parts and the two ends of the supporting parts are fixed to the first branching buckle and the second branching buckle together; and the end cap assemblies are arranged at the two ends of the pipe body in a sleeving manner so as to cover the first branching buckle and the second branching buckle. According to the invention, the arc energy is shared by designing a plurality of fuse pieces, the overall performance and stability of the fuse can be improved, and a reliable electrical protection effect is realized.

The invention belongs to the technical field of power supply and distribution of a data center, and provides an electrical protection method and system for power supply and distribution of the data center, aiming at the data center of a 2N power distribution architecture, electric energy parameters of two paths of external mains supply are collected and transmitted to an EMS of an energy storage system, and system charging and discharging power is controlled and adjusted through the EMS. According to the fact that the sum of the power on the two alternating current buses is larger than a set protection threshold value, the first switch device is controlled to cut off the connection between the energy storage system and the second alternating current bus, overload of a superior line or a transformer during charging or power supply switching is prevented, and in addition, through the measures of a reverse power detection device, first-path voltage loss linkage and the like, the energy storage system can be effectively protected. An external electrical protection system independent of the energy storage system is added to form dual protection, so that a dual fault superposition scene of energy storage system faults or power grid faults is effectively isolated, and the reliability of an originally designed power supply network of the data center is guaranteed.

A self-healing battery pack includes a plurality of battery modules connected in series. When a faulty battery module is detected, an electrical protective device connected in parallel with the faulty battery is caused to operate and thereby bypass the faulty battery module. The self-healing battery pack can additionally report the detection of the faulty battery module. When maintenance is scheduled to replace the faulty battery module, the self-healing battery pack can receive instructions to adjust a state-of-charge of the battery modules to reduce an equalization period.

The utility model relates to the technical field of electrical protection devices, in particular to a surge protection device with a temporary overvoltage protection function, which comprises a piezoresistor assembly, an inductor and a switch assembly, the piezoresistor assembly is connected with the switch assembly in parallel, and two ends of the inductor are respectively connected with the piezoresistor assembly and the switch assembly. The switch assembly comprises a conduction switch, a combination switch, a resistor R1 and a capacitor, the conduction switch is in linkage connection with the combination switch, the conduction switch is connected with the capacitor in series, the resistor R1 is connected with the combination switch and the inductor in series, and one end, away from the conduction switch, of the capacitor is connected with the combination switch and the piezoresistor assembly; when the conduction switch is closed and the capacitor is fully charged, the combination switch is conducted. By means of the arrangement, the surge protection device can be prevented from being damaged by impact when overvoltage occurs; when surge voltage occurs, the surge protection device can effectively discharge the surge voltage, and the safety of electric equipment is protected.

The present invention relates to a method of controlling an electrical protection device. When an electrical fault of the short-circuit type is detected during a step b) and when the tripping energy is greater than or equal to the tripping energy threshold in step d), controlling (S118) each switching module to enter the off-configuration. When the reclosing time of the given circuit breaker has elapsed, controlling (S122) each switching module to enter the on-configuration. If a circuit breaker is connected immediately upstream of the given circuit breaker, a test duration (T1) has not elapsed and a short-circuit is detected, performing steps c) to f) again; and if no circuit-breaker is connected immediately upstream of the given circuit-breaker, the test duration (T1) has not elapsed and a short-circuit is detected, controlling (S138) each switching module in the off-configuration.

An inductive sensor is integrated on a printed circuit board assembly (PCBA) of an electrical protective device, such that the inductive sensor is configured to contactlessly measure angular motion of an electrically conductive target mounted on the PCBA corresponding to a component of the electrical protective device. The inductive sensor comprises an integrated circuit, a transmitter coil, and receiver coils spaced apart vertically from the electrically conductive target. The integrated circuit is electrically coupled to the transmitter coil such that the integrated circuit is configured to transmit a high frequency time varying signal into the transmitter coil. The high frequency time varying signal energizes the transmitter coil thereby inducing a magnetic field. The magnetic field induces one or more output signals on the receiver coils and eddy currents in the electrically conductive target. The eddy currents produce a counter magnetic field that alters the output signals responsive to an angular displacement of the electrically conductive target.

The utility model relates to the technical field of electrical protection equipment, and discloses a lightning arrester convenient to assemble and disassemble, a fixing device is composed of a base, a bidirectional threaded rod, a fixed rod, a sliding block, a threaded block, a connecting block, an arc-shaped block, a fixed cylinder, a movable rod, an annular block, a fixed block, a spring and a limiting block, and the two-way threaded rod is rotationally mounted in the base. According to the lightning arrester convenient to mount and dismount, by pulling and rotating a moving rod, a fixed block can enter an arc-shaped groove, the moving rod can be limited, a lightning arrester main body is placed at the top of a connecting block, a bidirectional threaded rod is driven by a rotating handle to rotate, the arc-shaped block can basically limit the lightning arrester main body, the moving rod is rotated, and the lightning arrester main body can be conveniently mounted and dismounted. And under the action of the spring, the fixing block is separated from the arc-shaped groove and enters the sliding groove, so that the limiting block can limit the lightning arrester main body, the fixing effect is good, and the lightning arrester main bodies with different specifications can be fixed.

The utility model discloses a kind of insulation parts of power equipment convenient to install, belong to electrical protection technical field, it includes insulating cover, the insulating cover one side is rotatably connected with insulating baffle by pin shaft, the insulating baffle top is fixedly installed with clamping strip, the insulating cover top one side is fixedly installed with mounting seat, the inside middle fixed mounting of mounting seat is with partition. The insulation part of power equipment convenient to install, two clamping plates are separated from clamping strip, so that insulating baffle can rotate and separate from insulating cover surface, make the air switch inside insulating cover expose and be adjusted control, again insulating baffle is rotated back to insulating cover surface, repeat the above operation, loosen two sliding plates, so that sliding plate is clamped in clamping strip under the action of reset spring reset springback, make insulating baffle be fixed on insulating cover surface, so that after completing adjustment to air switch, continue to carry out insulating protection to air switch.

Electrical protection device, distribution assembly, and associated electrical switchgear. This electrical protection device (300), configured to electrically connect an electrical load (M) to an electrical power source (S), includes incoming terminals (302), outgoing terminals (304), and switching means (310) actuated by a bistable actuator (324). A microcontroller (320) is provided to generate a fault signal (S320), which triggers the actuator, and an output signal (S321), which is different from the fault signal. The protection device includes a supervisory circuit (500), which is interposed between the microcontroller (320) and the actuator (324) and which includes an oscillator (510) configured to generate a periodic signal (S510).The monitoring circuit is configured to generate a trigger signal (S324) when, alternatively, the output signal (S321) of the microcontroller (320) is absent, or the periodic signal (S510) of the oscillator (510) is absent, or when a fault signal (S320) is emitted. See Figure 6 for abbreviations.

The invention relates to the technical field of power system automation, in particular to a new energy box-type substation state estimation, regulation and control method, which comprises the following steps of: injecting a multi-frequency electrical excitation signal into a box-type substation, acquiring a voltage signal and a current signal, establishing a digital twin model based on primary wiring topology and grounding grid topology, performing combined state estimation and parameter estimation to obtain a comprehensive feature vector representing a degradation state, and inputting the comprehensive feature vector into a fault diagnosis and life evaluation model to obtain a risk index; and constructing a risk weighting objective function taking active output, reactive output and current as independent variables, and solving to obtain a control quantity vector for adjusting power output, reactive compensation and an electric protection device action constant value, thereby reducing the operation risk and prolonging the service life of equipment while ensuring the grid-connected requirement.

This invention relates to the field of electrical protection technology and discloses a fuse and its manufacturing method. The fuse includes: a tube body; a fusible element disposed inside the tube body; inner caps disposed at both ends of the tube body, with the two ends of the fusible element welded to the inner caps at both ends of the tube body; and an external terminal welded to the inner cap. This invention provides a fuse that allows the external terminal and inner cap to be welded together, reducing the impedance caused by the interference fit assembly method in the prior art, thereby reducing its power consumption while ensuring electrical protection capabilities.

A self-healing battery pack includes a plurality of battery modules connected in series. When a faulty battery module is detected, an electrical protective device connected in parallel with the faulty battery is caused to operate and thereby bypass the faulty battery module. The self-healing battery pack can additionally report the detection of the faulty battery module. When maintenance is scheduled to replace the faulty battery module, the self-healing battery pack can receive instructions to adjust a state-of-charge of the battery modules to reduce an equalization period.

This application provides an electric motor, an electric propulsion device, and an aircraft. The electric motor includes: a stator having a cavity; a rotor rotatably connected to the stator via a shaft; and the rotor being insulated from the stator; a conductive component disposed within the cavity, one end of the conductive component being conductively connected to the shaft, and the other end extending to the outside of the electric motor. The electric motor of this application, by incorporating the conductive component, creates a complete low-impedance electrical path between the shaft and the conductive component, allowing current that might be input into the electric motor via the rotor hub to be output to the outside of the electric motor, thus improving the electrical protection performance of the electric motor.

The invention provides a protection control device for an expansion power generation system of a compression control energy storage power station. The protection control device comprises a control module, a plurality of measuring points arranged on the compression control energy storage power station and valves, the control module is in communication connection with each measuring point and the valve; the control module is used for acquiring measurement data of each measurement point, monitoring feedback signals of a plurality of devices in the compression control energy storage power station, applying a preset protection control strategy and controlling a valve according to the measurement data of each measurement point and the feedback signals of each device, and completing protection control of an expansion power generation system in the compression control energy storage power station. The equipment comprises an electrical protection device, an electrical cabinet, a circulating cooling water system, an expansion generator, a heat release system, a cold storage system, measuring points and valves. The reliability and efficiency of protection control of the expansion power generation system can be improved, the safety and reliability of the compressed air energy storage power station are improved, and the supporting capacity for a power grid is guaranteed.

Electrical protection device, associated electrical installation and control method The present invention relates to an electrical protection device comprising: a mechanical switch; an interruption cell (18) comprising N switching modules (32, 42), N being greater than or equal to 2, each switching module (32, 42) comprising a voltage limiting element (39, 49), each voltage limiting element having a different limiting voltage (Ulim1, Ulim2);a control unit comprising a cell control module (66), configured to control each switching module in the blocked configuration, the limiting voltages, alone and / or summed together, form at least 2N-1 distinct steps, and the cell control module is configured to control in the blocked configuration the switching module(s) whose limiting voltages form a step being the largest step less than or equal to a dielectric withstand of the mechanical switch. Figure for the abbreviation: Figure 2;

The invention relates to the technical field of packaging bodies, in particular to a power module packaging body with a self-protection function, which comprises a heat dissipation substrate, the top of the heat dissipation substrate is in threaded connection with a double-sided crimping substrate, and the middle part of the bottom inner wall of the double-sided crimping substrate is fixedly connected with a power chip set. According to the device, through double-sided cooling, the thermal resistance is obviously reduced, the module is allowed to operate under higher power without triggering over-temperature protection, the output capability is improved, through flexible interconnection and spring pressurization, the main failure mode of fatigue of bonding wires and welding layers is eliminated, the service life of the module is matched with the theoretical service life of a chip, the connection reliability is improved, and the service life of the chip is prolonged. The modular design realizes rapid assembly and automatic modular production, the guide structure provides a stable and reliable working platform for the electrical function, the electrical protection ensures that the mechanical structure is not damaged due to abnormal electrical stress, and the special protection control chip and the driving and soft turn-off circuit perform self-protection.

The invention relates to the fields of robot technologies, intelligent hardware and the like, and aims to provide a design scheme of the modular hardware architecture and the hot plug functional component. The core design content is as follows: a modular hardware main architecture adopts a layered and partitioned design, comprises a core control module, a sensing module and the like, and realizes plug and play through a standardized interface; according to the hot plug function assembly, a camera, an emotion sensor and other modules support safe plugging in the operation process, and automatic recognition and drive loading can be achieved. And module management and monitoring: monitoring the state of the module in real time, and supporting remote upgrading, fault isolation and hot backup. And safety protection: multi-stage electrical protection, a hot plug protection circuit and a physical locking mechanism are provided. The method has the advantages that the robot hardware flexibility, maintainability and expansibility are improved, the upgrading and maintaining difficulty is lowered, the downtime is shortened, application of the robot in multiple fields is promoted, the cost is lowered, and the life cycle is prolonged.

The utility model discloses a power supply recovery preset switch, and relates to the field of electrical protection and safety design. Comprising an electrified coil, a contact column, a guide rail, a sliding block switch and a reset spring. And the electrified coil and the contact column are fixed on one side of the shell through fixing sheets. The guide rail is trapezoidal, and a trapezoidal thin plate is fixed at the upper end of the guide rail. The slide block switch is of a trapezoidal structure, one side is fixed with the reset spring, the other side is fixed with a small iron sheet and a contact, the center is provided with a coaxial cylinder, the upper end is connected with the switch, and the lower end is connected with a trapezoidal body. The two ends of the reset spring are fixed to the other side of the sliding block switch and the other side of the shell respectively. The utility model has the advantage that a user or equipment can select whether to recover the power supply of a certain electrical circuit or not when the power is returned after the power is cut off. Potential safety hazards possibly caused by sudden starting of equipment after power recovery are avoided.

The invention discloses farmland water conservancy irrigation electrical protection equipment which comprises a base, an electrical box is fixedly connected to the top of the base, electrical equipment is installed in the electrical box, vertical rods are fixedly connected to the four corners of the top of the electrical box, a top plate is fixedly connected to the ends of the four vertical rods, and a conical protrusion is integrally arranged on the top of the top plate. Anti-collision mechanisms used for buffering external collision force are arranged on the outer sides of the electrical box and the conical protrusion at equal intervals, supporting rods are fixedly connected to the four corners of the top of the base and fixedly connected with the top plate, waterproof telescopic cloth is fixedly connected to the bottom of the top plate, and telescopic sleeves are integrally arranged on the four corners of the waterproof telescopic cloth. When the electrical box is collided by external force, the protection plates are stressed to extrude the arc-shaped sliding rods, so that the springs are compressed, the collision force can be effectively buffered under the elastic action of the springs, and the external force is prevented from directly acting on the electrical box; in short, the device has the advantages of being high in automation degree, good in waterproof effect, capable of prolonging the service life of equipment and achieving remote control and good in heat dissipation effect.

The application discloses a kind of electrically conductive material pole bottom protection device, it is related to electric furnace technical field.Electrically conductive material pole bottom protection device includes: limiting sleeve, drive mechanism and ball screw, the output of limiting sleeve, drive mechanism and the axis of ball screw coincide;The inner wall of limiting sleeve is sequentially provided with first connecting area, toothless area and second connecting area along its axial direction;The output of drive mechanism is connected with limiting sleeve by first connecting area;Ball screw and limiting sleeve have two kinds of connection states.The application designs new electrical control and mechanical control idea by mechanical protection mechanism and electrical protection mechanism, carries out atmosphere protection electric furnace's electrically conductive material pole bottom protection, by perfect electrical control and mechanical structure design, and according to process requirement, reasonable control, the protection device can effectively solve electrically conductive material pole in carrying out bottom operation, due to bottom protection failure leads to system damage to cause economic loss and personnel injury.

This electrical protection device (300), configured to electrically connect an electrical load (M) to an electrical power source(S), comprises incoming terminals (302), outgoing terminals (304), and cut-off means (310) actuated by a bistable actuator (324). A microcontroller (320) is provided to generate a fault signal (S320), which triggers the actuator, and an output signal (S321), which is different from the fault signal. The protection device comprises a supervision circuit (500), which is interposed between the microcontroller (320) and the actuator (324) and includes an oscillator (510) configured to generate a periodic signal (S510). The supervision circuit is configured to generate a trigger signal (S324) when, alternatively, the output signal (S321) of the microcontroller (320) is absent, or the periodic signal (S510) of the oscillator (510) is absent, or when a fault signal (S320) is emitted.

A battery module (100, 700) for a powered device is disclosed, comprising a battery enclosed in a housing (101, 701), at least one end cap (103, 702) securely attached to the housing (101, 701), and a BMS board (108, 806) positioned near the at least one end cap (103, 702). The battery module (100, 700) further includes at least one end connector (109, 110, 111; 703a and 703b) detachably attached to the BMS board (108, 806). A first end connector (109, 703a) corresponding to at least one power line of the battery module (100, 700) includes at least one protection device (301, 1004) connected to the at least one power line for providing electrical protection for the battery module (100, 700). The end connectors (109, 110, 111; 703a and 703b) prevent interference between signal lines and power lines and make the battery modules (100, 700) waterproof and dustproof.

The invention relates to a device for protecting an electrical circuit coupled to a power supply network, in particular a vehicle power supply network, from overvoltage, comprising: an electrical input for applying an input voltage; an electrical output for providing an output voltage to a power supply network or a connected circuit; and an electrical protection circuit having a detection section, a semiconductor switch and a limiting section, the semiconductor switch being arranged between the electrical input and the electrical output and being actuatable in such a way that the output voltage output at the electrical output can be interrupted, wherein the detection section is configured to actuate the semiconductor switch by means of an actuation voltage when a threshold value of the input voltage is reached in such a way that the output of the output voltage is interrupted, the detection section having a voltage threshold detection element, such as a Zener diode, and wherein the limit section is configured to limit the output voltage when the output voltage is interrupted. The control voltage for the semiconductor switch is limited.

This utility model relates to the field of electrical protection and discloses an isolation device for the electrical system of the conventional island and BOP (Balance of Plant) of a nuclear power plant. This device aims to address the safety risks posed by the close proximity and exposed nature of live connection terminals (pile heads) in adjacent outgoing line bays in existing technologies, which can easily lead to accidental electric shock and short circuit damage to equipment when workers operate in specific bays or near secondary terminal blocks. The device mainly includes a base plate, connection terminals for connecting electrical wiring harnesses disposed on the base plate, and an insulating plate. The key innovation lies in the fact that the insulating plate and the base plate are at least partially spaced apart, together forming a space to accommodate the connection terminals. By constructing an insulating barrier around the exposed live connection terminals, an effective physical isolation space is formed. This barrier can reliably prevent workers' fingers, maintenance tools, or other objects from accidentally touching the live terminals during operation, thereby eliminating the significant safety hazard of electric shock and short circuit damage to equipment caused by accidental contact with live pile heads in adjacent bays.

The utility model discloses a monorail crane inclined roadway conveying warning device, belongs to the technical field of electrical protection, and solves the problems of potential safety hazards and high labor cost caused by manual warning in the process that an existing monorail crane enters an inclined roadway for conveying. According to the utility model, the electric control unit is used for opening sound-light alarm to control the opening and closing of an air valve of the pneumatic electromagnetic valve, the pneumatic electromagnetic valve drives the pneumatic control unit, and the cylinder is used for driving the double-pulley block to rotate to control the lifting of the warning door; when the monorail crane enters an inclined drift for transportation, the electric control unit sends out a sound-light alarm, a pneumatic electromagnetic valve opening air valve coil is electrified and connected, a cylinder ejector rod is pushed to move, a driving pulley is driven to move, a driving wheel and a driven wheel slide along with the driving pulley through a steel wire rope, a folding door is stretched downwards, and a warning door is closed. The safety alert door can be automatically closed when the monorail crane is in inclined roadway conveying and can be automatically opened after conveying is finished, potential safety hazards existing in manual alert are reduced, and labor cost is reduced.

The utility model belongs to the electrical distribution equipment field discloses an intelligent safety distribution box, including the box, the electrical assembly of setting in the inside of box and being divided into different function areas and a set of intelligent monitoring protection system, the structure design of electrical assembly of at least partial area of box adopts the bevel installation and recess in the surface of box, the box is equipped with ventilation and heat dissipation system, including the air intake of being located in the lower part of box, the exhaust fan of being located in the top of box and the rainproof top cover with the air outlet structure, and the intelligent monitoring protection system can monitor voltage, current and the like parameter, realizes remote monitoring, fault diagnosis, early warning and a variety of electrical protection function, including overvoltage, overcurrent overload, electric leakage and surge protection, and supports remote opening and closing. The utility model passes through the combination of structure optimization and intelligent technology, has improved the safety, reliability and operation convenience of distribution box significantly.

An electrical protection device includes a housing including a plurality of sidewalls. The plurality of sidewalls includes one or more thermochromic sidewalls. The electrical protection device includes a switch assembly located in the housing and an electrical connector extending from the housing. The electrical connector is configured to place the switch assembly in electrical connection with a main bus at an electrical distribution panel. In response to a condition at the electrical protection device causing a temperature of a respective thermochromic sidewall of the one or more thermochromic sidewalls to exceed a temperature threshold, the respective thermochromic sidewall is configured to provide an indication of the condition of the electrical protection device. The indication may be a visual indication including a color change and an expansion of the material. The indication may be an audible indication including emitting a noise.