1659 results about "Transfer switch" patented technology

The utility model discloses a zero interruption dual power supply fast switching device, comprising a dual power supply switch, a power electronic assembly, an output switch QF and a load which are connected in sequence, the power electronic assembly comprises an electronic bypass unit VT, a mechanical bypass contactor KM, an isolation transformer TM, a bidirectional converter CU and a super capacitor energy storage unit CAP, a contact S1 in the dual-power switch is connected with a main power supply, a contact S2 is connected with a standby power supply, a mechanical bypass contactor KM is connected with an electronic bypass unit VT in parallel, an isolation transformer TM is connected to the output end of the electronic bypass unit VT, and the two ends of a bidirectional converter CU are connected with the isolation transformer TM and a super capacitor energy storage unit CAP respectively. According to the device, the dual-power-supply change-over switch is matched with the power electronic component, so that rapid switching of the dual-power-supply switch is realized, the problem of power supply interruption in the switching process is solved, and the reliability of power supply is improved; and meanwhile, few energy storage elements are used, and the cost is low.

A method operable by a controller of a static transfer switch (STS) is provided. The STS includes first and second inputs selectively coupled with first and second power sources via first and second circuit breakers, respectively, an output coupled with a load, first and second bypass breakers selectively coupling the first and second inputs, respectively, with the output, at least one removable power stage module including first and second power stages configured to conduct electrical power when active, first and second contactors selectively coupling the first and second inputs with the first and second power stages, respectively, and a load switch selectively coupling the first and second power stages with the output. The method includes modifying an operating state of the first and second contactors and the first and second power stages to implement a bypass operation and an un-bypass operation of the STS in response to a trigger condition.

The invention discloses a multi-stage collaborative protection simulation verification method for a subway power supply system, and the method comprises the steps: building an integrated simulation model which comprises an automatic reclosing switch, a spare power automatic switching switch and an automatic change-over switch based on an MATLAB / Simulink platform, and especially carrying out the precise modeling of an advanced compensation function of ATSE. The model is verified by a power-off test, a simulation result and actually measured data are highly consistent in voltage recovery time, an error of advanced compensation action time of ATSE is less than 2ms, and dynamic characteristics of an actual system are accurately reproduced. Model simulation shows that the advanced compensation strategy of the ATSE can effectively control the voltage sag amplitude within 15%, the power supply reliability of the system is remarkably improved, and through strict'simulation-actual measurement 'double-track verification, the model accurately reproduces the dynamic characteristics of the actual system, and shows remarkable advantages in the aspect of improving the power supply reliability.

The utility model discloses a speed reducing mechanism for an automatic change-over switch and the automatic change-over switch, and relates to the technical field of low-voltage electric appliances. The speed reduction mechanism for the automatic change-over switch comprises a speed reduction wheel and a rocker, the speed reduction wheel is movably arranged on an output shaft of an operating mechanism of the automatic change-over switch in a sleeving mode, a speed reduction rail is arranged on the speed reduction wheel, and the rocker is connected with the speed reduction wheel. The output part of the operating mechanism is abutted against the speed reduction wheel after running for a certain idle stroke, the speed reduction wheel is forced to rotate, and the rocker is driven to move along the speed reduction track to decelerate rotation of the output shaft. The speed reducing mechanism for the automatic change-over switch and the automatic change-over switch can solve the problem of power supply short circuit caused by too fast switching of the moving contact between the common closing position and the standby closing position in the prior art.

The invention discloses an in-situ automatic calibration system and method for a multi-channel temperature acquisition instrument. The system comprises a metering port, a change-over switch, an upper computer, a multi-channel change-over switch and a standard signal source. The metering port is connected with the multi-channel change-over switch and is used for calibrating the temperature acquisition instrument; the change-over switch is connected with the acquisition circuit board and is used for switching a measurement mode and a calibration mode, in the measurement mode, the acquisition circuit board is connected with the measurement port, and in the calibration mode, the acquisition circuit board is connected with the metering port; the multi-channel change-over switch performs channel switching under the control of the upper computer, the standard signal source is connected with the multi-channel change-over switch and is used for outputting a preset standard electric signal to the metering port, the acquisition circuit board acquires the electric signal and converts the electric signal into a digital signal, and the master control digital board processes the digital signal and transmits the digital signal to the upper computer. According to the invention, a metering calibration function is added on an original temperature acquisition instrument, so that on-site rapid calibration of the multi-channel temperature acquisition instrument can be realized.

A static transfer switch (STS) system for transferring power between power sources is provided. The STS system includes first and second alternate-current (AC) switch assemblies. The first AC switch assembly includes a first current interrupter, and a first controller configured to control the first current interrupter. The second AC switch assembly includes a second current interrupter, and a second controller configured to control the second current interrupter. The first AC switch assembly and the second AC switch assembly are in communication with one another and are each configured to monitor an output power to the load, the first power source, and the second power source and transfer power when disturbance is detected in the output power, the first power source, and / or the second power source.

The invention relates to an operating mechanism of a dual-power automatic change-over switch, which comprises a shell and an automatic change-over assembly, and is characterized in that the automatic change-over assembly comprises a mechanism frame, a motor, a change-over disc, a change-over shaft, a first rotating frame, a first change-over pull plate, two first energy storage springs, a second rotating frame, a second change-over pull plate, two second energy storage springs and a change-over driving part; a driving part is arranged on the side, facing the first rotating frame, of the conversion driving part in a linkage mode, a shifting shaft matched with the driving part is arranged at one end of the first rotating frame, a shifting groove matched with the shifting shaft is formed in the driving part, and one end of the shifting shaft moves along with the first rotating frame and moves in the shifting groove in a reciprocating mode. And linkage matching between the driving piece and the first rotating frame is formed. The circuit breaker has the advantages of simple structure, stable and reliable performance, rapid and reliable conversion and high breaking capacity.

A comparator operating by receiving a supply of a first voltage (VDD / VSS) and a second voltage (VSS / VDD), the comparator comprising: a differential amplifier circuit (110) connected to a first power supply node (Np / Ns) that supplies the first voltage via a first and a second node (N1, N2), and which generates a first current (I1) and a second current (I2) in the first node and in the second node, respectively, wherein the first current and the second current have a current difference obtained by amplifying a voltage difference between an input voltage (Vin) and a reference voltage (VREF) predetermined between the first and the second voltage; a current source circuit (130) connected to the differential amplifier circuit via a third node (N3) between the first power supply node and a second power supply node (Np / Ns) that supplies the second voltage.connected in series and generating a third current (I3) which is a sum of the first and second currents at the third node; an output stage (170) connected between an output node (N6) and the first power supply node and having a current driving force to generate a first output current (I6p) proportional to the first current between the first power supply node and the output node; a current conversion circuit (140) having a current driving force to generate a second output current (I4n) proportional to the second current between the second power supply node and the output node; a minimum selection circuit (150) connected between a complementary output node (N5) and the first power supply node and causing the complementary output node to generate a current (I5) proportional to a minimum current of the first and second currents (I6p,I4n); and a latching circuit (160) connected between the output node and the complementary output node and the second power supply node, wherein the latching circuit performs a reset operation in which both the output node and the complementary output node are electrically connected to the second power supply node in response to a reset signal (RST), and performs a latching operation with positive feedback in which a change generated in the output node is amplified from the second voltage to the first voltage when a high-low relationship between the input voltage and the reference voltage is reversed from a reset cancellation time, while the output node and the complementary output node are electrically disconnected from the second power supply node during circuit operation after the reset cancellation.and sets the voltage at the output node to the first voltage, while the voltage at the complementary output node is set to the second voltage until the reset signal is next input.

The invention discloses a dual-power change-over switch, which comprises a shell, a rotating shaft, a moving contact, a handle and an automatic operation device, the shell comprises a shell seat I and a shell seat II which are oppositely combined to form a mounting cavity; the handle is rotatably arranged at the upper part of the shell and is linked with the rotating shaft; an upper arc-shaped plate and a lower arc-shaped plate which are bent upwards are arranged on the upper portion of the first shell base, an arc-shaped sliding way is formed between the upper arc-shaped plate and the lower arc-shaped plate, an arc-shaped installation groove is formed in the position, on the upper side of the lower arc-shaped plate, between the upper arc-shaped plate and the second shell base, and an arc-shaped receding groove is formed in the inner side of the upper portion of the second shell base. The connecting part is matched with the rotating shaft in an inserting mode, the inserting direction is consistent with the direction that the limiting inserting block is inserted into the arc-shaped sliding way, a downward arc-shaped limiting face is arranged in the arc-shaped receding groove, and the arc-shaped limiting face downwards abuts against and limits the connecting part; the structure of the dual-power change-over switch is optimized, the dual-power change-over switch is convenient to assemble, the switch performance is stable, and the dual-power change-over switch has good practicability and generalizability.

The invention discloses a multi-port direct current change-over switch based on a controllable negative voltage source, and belongs to the technical field of power equipment. Comprising X (X = 5 or 3) main branches, a commutation branch and X groups of controllable conduction switches, each main branch is composed of a through-flow vacuum switch, and the commutation branch is composed of a controllable negative voltage source and a square wave resonance direct current circuit breaker which are connected in series. The five main branches of the sending end are connected with a sending end positive pole rectifier and the like, and the three main branches of the receiving end are connected with a receiving end positive pole rectifier and the like and are all connected with the commutation branch through a controllable conduction switch. The controllable negative voltage source is formed by connecting a double-thyristor branch circuit and a negative voltage source in parallel, and the square wave resonance direct current circuit breaker comprises a temporary through-flow branch circuit and the like. The vacuum switch is used for replacing an SF6 switch, so that the switch is good in environmental protection property; the converter branch and the lightning arrester are shared, so that the use of high-price equipment is reduced, and the cost is reduced; a controllable square wave voltage source is utilized to excite high-frequency oscillation of an LC branch, and the element size is reduced; and rapid transfer of current in different directions can be realized, and the system response speed is improved.

The invention discloses a starting and stopping method for mine production line equipment. The starting and stopping method comprises the following steps: performing interlocking control and protection on electrical equipment from coarse crushing to finished product stacking and bulk packaging according to a reverse-sequence starting and sequential stopping principle; the material level is monitored through a material level sensor installed on the ore storage bin; fault shutdown and interlocking protection are implemented, and real-time state monitoring is carried out on each device; an in-situ starting cabinet or an in-situ control box is arranged beside each device, and a remote / in-situ control change-over switch is arranged; the operation condition of the equipment is monitored through a special liquid crystal display or an HMI (Human Machine Interface) of a PLC control level; the centralized control platform displays pictures, performs online monitoring on equipment data, monitors the temperature, the load and the rotating speed of the equipment, and triggers an alarm for the equipment of which the monitoring data exceed a normal range. The invention aims to realize automatic start-stop control of mine production line equipment so as to improve the efficiency, safety and reliability of mine production.

And the auxiliary self-locking structure comprises a movably arranged locking piece and an auxiliary change-over switch, the cantilever can be switched between a switching-on position and a switching-off position along with rotation of the main shaft, the auxiliary change-over switch comprises a microswitch and a rotatably arranged lever, the cantilever is in driving fit with the lever and is in linkage fit with the locking piece, and the cantilever is provided with a critical position close to the switching-on position. The circuit breaker comprises the auxiliary self-locking structure. According to the auxiliary self-locking structure and the circuit breaker, the locking piece is arranged, the lever is driven by the cantilever to trigger the microswitch to switch signals of the auxiliary change-over switch, and the locking piece is unlocked with the lever under linkage of the cantilever to enable the lever to reset so as to reset the signals of the auxiliary change-over switch. When the cantilever is located between the opening position and the critical position close to the closing position, the locking piece locks the lever in the state of triggering the microswitch, and even if the cantilever rotates towards the closing position due to the springback of the contact, due to the locking effect of the locking piece on the lever, the signal of the auxiliary change-over switch cannot be reset.

A system includes an air conditioning system including a first unit including a compressor and a second unit; an energy storage device; a first transfer switch providing a power connection to the first unit; and a system energy manager configured to control the first transfer switch to supply power to both the second unit and the first unit from one of an AC power grid or the energy storage device.

The invention provides a control system of a snow removal shovel, which belongs to the technical field of snow removal equipment and comprises a hydraulic system and an electric control system. The hydraulic system comprises a lifting and descending oil cylinder, a left-right swing oil cylinder, a hydraulic oil tank and an oil pump connected with the hydraulic oil tank, wherein the lifting and descending oil cylinder and the left-right swing oil cylinder are connected with the snow shovel. An inlet and an outlet of the lifting and descending oil cylinder are connected with an oil return opening of the oil pump and an oil return opening of the hydraulic oil tank through first circulation pipelines respectively. A first electromagnetic directional valve is arranged on the first circulating pipeline; an inlet and an outlet of the left-right swinging oil cylinder are respectively connected with the oil pump and an oil return port of the hydraulic oil tank through a second circulating pipeline; a second electromagnetic directional valve is arranged on the second circulating pipeline; the electric control system comprises a power supply main switch, an ascending and descending switch, a left-right swing switch and a self-weight forced descending change-over switch, wherein the ascending and descending switch and the left-right swing switch are connected to the power supply main switch in parallel; the problem that in the prior art, the snow removing effect is poor due to the fact that the weight of a snow shovel is insufficient can be solved.

The invention discloses a steam sterilizer based on deep reinforcement learning and an intelligent control system, and belongs to the technical field of automatic control. In the intelligent control system, a first subtracter generates a sequence first error signal according to an actually measured temperature provided by a temperature sensor and a set temperature; the second subtracter generates a sequence second error signal according to the actually measured air pressure provided by the pressure sensor and the saturated air pressure of the water vapor determined by the set temperature; the deep reinforcement learning module generates a first state according to the sequence first error signal, generates a second state according to the sequence second error signal, and generates control strategies of the first PID controller and the second PID controller according to the first state and the second state; generating a control strategy of the electronic change-over switch according to the second error signal; the first PID controller controls the working state of the steam generator; and the second PID controller selects the electric control air inlet valve or the first electric control exhaust valve through the electronic change-over switch. Saturated steam can be ensured to participate in sterilization, and the sterilization effect is good.

The invention discloses a high-efficiency UPS (Uninterrupted Power Supply) management system for well logging, and belongs to the technical field of power management. The system comprises a rectifier, a charger, a storage battery pack, an inverter, a change-over switch and a management module. The management module comprises an on-line monitoring unit, a power supply controller and a driving circuit, and the on-line monitoring unit collects UPS power supply operation state parameters in real time; the power supply controller receives and processes the parameters, and generates a control instruction according to a preset threshold value; and the driving circuit converts the control instruction into a driving signal and accurately controls the working state of the inverter. Wherein a signal conditioning circuit is arranged between the sensor module and the data acquisition unit and can perform enhancement and noise reduction processing on an analog signal output by the sensor. The driving circuit effectively resists well logging environment interference through cooperative work of an instruction amplifier, a photoelectric coupler and a field effect transistor, stable operation of a UPS power supply system is guaranteed, accurate control over the working state of an inverter is achieved, and it is ensured that stable and reliable electric power supply is provided for well logging equipment.

The utility model relates to the technical field of change-over switches, and discloses an isolation type change-over switch, which comprises a shell, an operating handle arranged on the shell, a mounting hole arranged on the operating handle, handle shafts arranged at two ends of the mounting hole, a spring I fixedly arranged in the mounting hole and between the two handle shafts, and an arc groove arranged below the operating handle, an arc groove is formed in the shell, a connecting rod is slidably arranged in the arc groove, a moving contact assembly is fixedly arranged below the connecting rod, two moving contacts are installed in the moving contact assembly, and two static contact assemblies are fixedly arranged in the shell. The positions of the two moving contacts are locked through the single second spring, the moving contacts are prevented from loosening easily, when the moving contacts are communicated with the static contacts, the second spring assists in pressing the moving contacts, if the arc groove drives the moving contacts to be separated from the static contacts, the moving contacts and the static contacts are separated in time, adhesion is not prone to occurring, the arc groove is connected with the connecting rod in a sliding mode, and the connecting rod is not prone to falling off. The transmission process is not blocked, the operation smoothness is high, the assembly operation is simple and convenient, and the segmentation efficiency of the moving contact is improved.

The utility model discloses a three-position dual power conversion switch, comprising a conversion shaft arranged on a shell and two spring members arranged between the conversion shaft and the shell, two installation slide grooves connecting the two spring members are arranged on the shell, the two spring members respectively have first end feet slidably connected in the two installation slide grooves, and second end feet extending and connected to the conversion shaft, when the conversion shaft switches between a first position, a second position and a third position, the first end feet of the two spring members are driven to move and adjust positions in the two installation slide grooves respectively, and a force is applied to the conversion shaft to keep it in the first position, the second position or the third position through the two spring members, and the dual power conversion switch can disconnect the normal power supply and the standby power supply in the third position to achieve the purpose of dual separation, and the dual power conversion switch has a simple operating structure, low cost, reliable and in-place operation switching, and improved product performance.

An electrical device (100), such as an automatic transfer switch or an electrical power distributor, comprises: a first electrical power input (101); a second electrical power input (102); an electrical power output (121, 122, 123); a switching circuit (105) operable to route electrical power from the electrical power inputs to the electrical power output; the switching circuit comprising: a first switching element (111) to allow, when enabled, power flow from the first electrical power input to the electrical power output; and a second switching element (112) to allow, when enabled, power flow from the second electrical power input to the electrical power output; a controller (110) operable to control the switching circuit to switch to the first electrical power input or the second electrical power input for selecting which of said electrical power inputs is to supply electrical power at the electrical power output; wherein the electrical device is operable to determine a timing sequence of switching between the first electrical power input and the second electrical power input.

The invention provides a mode conversion device, an automatic change-over switch and electric equipment, and relates to the technical field of low-voltage electric appliances, the mode conversion device comprises a shell, a knob, a sliding piece and a padlock piece, the knob and the sliding piece are arranged in a linkage mode, and the sliding piece can be close to or away from the padlock piece through the knob; the knob has at least one of a manual position state, an automatic position state and an isolated position state, and the sliding part is arranged on the shell in a sliding manner to realize at least one of the manual position state, the automatic position state and the isolated position state; when the knob is located at the isolation position, the padlock piece is pulled out of the shell to lock the movement of the sliding piece, the knob is limited at the isolation position, the knob cannot be operated automatically or manually, at the moment, the automatic change-over switch is in a double-open state, operation such as maintenance can be conducted on the automatic change-over switch, and the safety of maintenance personnel is guaranteed. By adopting the knob, the sliding piece and the padlock piece, switching among various modes and complex linkage logic can be realized, the structure is simplified, the clamping stagnation feeling in operation is reduced, the operation convenience is improved, and the cost is reduced.

A dual power switching system selects a first power source or a second power source to supply power to a load coupled to an inductive device. The dual power switching system includes a first thyristor, a second thyristor, a third thyristor, a fourth thyristor, and a controller. The controller calculates a total magnetic flux according to a current magnetic flux of the inductive device and an expected magnetic flux of the second power source. When the power-supplying source is switched, the controller turns off the first thyristor and the second thyristor, and determines whether a commutable time is reached according to a power parameter of the first static transfer switch and the second static transfer switch. When the commutable time is reached, the controller correspondingly turns on at least one of the third thyristor and the fourth thyristor according to the total magnetic flux being less than a threshold.

Combined charging / discharging circuit with an energy storage terminal (A+, A-), an energy source terminal (PE, NE), a resistor (R), a series switch (L), a cross-switch (Q), and a controller (C) which is drivingly connected to the series switch (L) and to the cross-switch (Q), which together are designed as a changeover switch, wherein the resistor (R) connects a first potential (A+) of the energy storage terminal to a connection point (P) at which the series switch (L) and the cross-switch (Q) are connected to one another, the series switch (L) in a pre-charging state connects the resistor (R) to a first potential (PE) of the energy source terminal (PE, NE), and the cross-switch (Q) in a discharging state connects the resistor (R) to a second potential (NE) of the energy source terminal (PE, NE), wherein the controller is configured to set the pre-charging state (L1, U1) or the discharging state (Q2, U2),wherein the longitudinal switch (L) and / or the transverse switch (Q) in a connection state connects the first potential (PE) of the energy source terminal (PE, NE) to the first potential (A+) of the energy storage terminal, bypassing the resistor (R), wherein the controller is configured to establish the connection state.

The embodiment of the present invention provides a portable integrated detection, launch and control device suitable for underwater vehicles, including: a main control board, which is used to realize the recording and storage of communication interaction content during the detection process, digital-to-analog conversion of input analog signals, isolated input and output of switch quantities, and conversion of communication interfaces; a distribution board, which is used to control power conversion and output, and isolate and convert analog signals of the controlled distribution power supply including at least voltage and current, the distribution board is connected to the main control board to provide the main control board with sampling required for judging the working state of the distribution power supply; a human-computer interaction panel, which is used for human-computer interaction and information interaction; an air-cooled heat dissipation system, which is installed below the vent of the human-computer interaction panel; the above-mentioned device is installed in an integrated three-proof chassis, and the cavity of the integrated three-proof chassis is divided into two areas of air inlet and air outlet by a baffle plate, and an air duct is formed inside the three-proof chassis to discharge the heat of the distribution board and the main control board.

The utility model discloses a novel dual-power multi-standby plug-in low-voltage switch cabinet, which comprises a base, a bus coupler cabinet mounted in the middle of the top end of the base, a first wire inlet cabinet mounted on one side of the top end of the base, and a second wire inlet cabinet mounted on the other side of the top end of the base, drawer type circuit breakers are installed in the middle of the bus coupler cabinet, the middle of the first wire inlet cabinet and the middle of the second wire inlet cabinet respectively, a change-over switch is installed on one side of the top of the front face of the bus coupler cabinet, an automatic switching microcomputer is installed on the other side of the top of the front face of the bus coupler cabinet, and two wire outlet drawers are installed at the bottom of the first wire inlet cabinet and the bottom of the second wire inlet cabinet respectively. According to the novel dual-power-supply multi-standby plug-in low-voltage switch cabinet, the two wire inlet cabinets and the bus coupler cabinet of the low-voltage switch cabinet adopt electrical interlocking to ensure that the three wire inlet cabinets and the bus coupler cabinet cannot be switched on at the same time, and a standby power automatic switching microcomputer and a change-over switch are additionally arranged on the contact cabinet to realize three switching functions of standby power automatic switching, manual operation and stopping.

The utility model discloses a 400V station service power switching and diesel generator remote automatic input system for a hydropower station, and belongs to the field of power switching. The utility model aims to solve the problem that manual closing of plant diesel generator power supply equipment is easy to cause accidents. The first power supply end is connected to a movable contact of a first dual-power-supply change-over switch through a first circuit breaker, a first transformer and the other end of a first isolation disconnecting link in sequence, a static contact of the first dual-power-supply change-over switch is connected with a 400 V bus, and the other movable contact of the first dual-power-supply change-over switch is connected with a static contact of a second dual-power-supply change-over switch. One movable contact of the second dual-power change-over switch is connected with a second power supply end through a second isolation disconnecting link, a second transformer and a second circuit breaker in sequence, and the other movable contact of the second dual-power change-over switch is connected with the diesel generator through a third isolation disconnecting link; one phase of phase voltage is randomly selected from the 400V bus to be connected to the voltage input end of the diesel generator starting circuit; and detecting whether the 400V bus is electrified or not, and judging whether to control the diesel generator to start or not. The method is used for automatically switching power supply.

The present invention discloses an operating mechanism of a multi-connection conversion switch, comprising a rotating handle, a central operating shaft and a transmission operating shaft, wherein a driving crank arm is provided on the central operating shaft, the driving crank arm is provided with a driving part, a driven crank arm is provided on the transmission operating shaft, the driving part and the driven crank arm are provided with a transmission structure, and the transmission structure comprises a motion guide groove and a push block structure, during the rotation process, the driving part on the driving crank arm drives the driven crank arm and the transmission operating shaft to rotate simultaneously through the cooperation of the motion guide groove and the push block structure, so that the rotating handle can drive the central operating shaft and the transmission operating shaft to rotate together, and multiple groups of universal conversion switches execute closing or opening actions at the same time. The advantage of such a design is that the customer can disperse the multiple groups of circuits that need to be controlled on the multiple groups of universal conversion switches, thereby avoiding the problem of the universal conversion switches being too long, the transmission distance of the central operating shaft and the transmission operating shaft is small, the structural strength is high, the transmission is reliable, and the action consistency is good.

The present inventive concepts comprise a connected, intelligent transfer switch system that permits remote metering, monitoring and control of energy sources connected to a device both by hardwired and wireless connection, and the method for operating this system is disclosed. The inventive concepts represent a significant improvement upon existing transfer switch systems by incorporating advanced monitoring and control capabilities of all energy resources connected to a building, such as fossil-fuel powered generators, battery storage systems, solar photovoltaic arrays, wind turbines, utility grid connections, controllable loads, or other technologies which generate, store or consume energy. The inventive concepts further provide means for flexible and intelligent operation of these resources through a dedicated network communication connection which enables advanced operational decision-making to determine optimal switching actions and real-time interaction through user-facing digital interfaces.

The invention discloses a circuit breaker control system and method, and the system comprises an L-shaped frame, a propelling mechanism, a power module, a display control screen, a measurement and control terminal, an upper computer, a handcart drive loop, and an operation mechanism drive loop. The handcart driving loop comprises a driving module MCU, a driving motor M2, an auxiliary switch FK, a mode change-over switch SA, a first position confirmation mechanism, a second position confirmation mechanism and a travel switch TQ1; the operating mechanism driving loop comprises a driving module DL, an operating mechanism energy storage module, a relay KT1, an auxiliary switch FK, a mode change-over switch SA, a closing coil LH and an opening coil LF. According to the invention, remote operation of the circuit breaker handcart, the propulsion mechanism and the operation mechanism is realized through the measurement and control terminal and the two driving loops, the operation efficiency of the circuit breaker in and out of the handcart is greatly improved, and the operation intensity and the operation and maintenance cost are reduced.

The invention relates to the technical field of transformer testing, and discloses a transformer parameter comprehensive tester which comprises an anti-interference shell, a power socket, a grounding pole, a USB interface, an RS232 communication interface, a power switch, an internal and external power supply change-over switch, a display touch screen, a micro printer, a wiring terminal panel, a Bluetooth communication module, a communication bus and an internal power supply. By integrating the anti-interference shell, the power socket, the grounding pole, the USB interface, the RS232 communication interface, the power switch, the internal and external power supply change-over switch, the display touch screen, the miniprinter, the wiring terminal panel, the Bluetooth communication module, the communication bus and the internal power supply, all test items can be completed through one-time wiring, and the workload of field test personnel is reduced; the testing accuracy and reliability are improved, the influence of external electromagnetic interference on the testing result is effectively reduced through the anti-interference shell and the shielding measure, the requirements of different occasions and different transformer parameter testing can be met, and the testing device has wide application prospects.

The utility model relates to a toxic gas detection simulation and exhaust device based on an underground goaf. The device comprises a detection simulation assembly and an exhaust assembly which are connected, and is structurally characterized in that the detection simulation assembly comprises a detection simulation host, a four-in-one gas detector and an audible and visual alarm, and the exhaust assembly comprises an exhaust fan and an exhaust pipe. The four-in-one gas detector, the audible and visual alarm and the exhaust fan are all in circuit connection with the detection simulation host, the exhaust fan is in pipeline connection with one end of the exhaust pipe, and the detection simulation host is provided with a host cover plate used for shielding the button. The detection simulation host comprises a main control board, a contactor, a change-over switch, an inverter, a battery, an ampere meter, a red button, a green button and a female interface, the contactor, the battery, the ampere meter, the red button, the green button and the female interface are all connected with the main control board, the change-over switch is respectively connected with the inverter and AC220V, and the inverter is connected with the battery.