50results about How to "Reduce output power" patented technology

The invention relates to the technical field of photovoltaic energy storage cabinets, in particular to a safety type photovoltaic energy storage cabinet. Comprising an outer shell, a plurality of inner shells are fixedly connected in the outer shell, battery packs are detachably and fixedly connected in the inner shells, cooling fans which are symmetrically distributed are arranged outside the outer shell, each inner shell is provided with two cooling row holes which are symmetrically distributed, and the inner shells are slidably connected with two plugging frames which are symmetrically distributed. The two plugging frames on the inner shell are jointly provided with a connecting frame, the inner shell is fixedly connected with a sliding rail, an electric sliding block is slidably connected into the sliding rail, and the electric sliding block of the sliding rail is fixedly connected with the adjacent connecting frame. According to the invention, the temperatures of the plurality of battery packs during charging are respectively detected, and heat dissipation of different degrees is carried out according to different temperatures of the plurality of battery packs, so that the plurality of battery packs are at proper temperatures, cooling resources are allocated as required, energy is saved, and operation cost is reduced.

The invention provides a network construction type photovoltaic system control method supporting active support of power grid frequency, and the method comprises the steps: (1) designing a PV system power reduction operation control strategy which is used for enabling a PV system to reserve power to participate in frequency adjustment of a power grid; (2) designing a PI-based DC bus voltage control strategy for adjusting the DC bus voltage to a reference value; (3) designing a load side step-down operation control strategy based on PI, wherein the strategy is used for stabilizing the DC bus voltage in an off-grid mode; (4) designing a VSG control strategy, and enabling the network-forming inverter to simulate a synchronous generator to participate in active frequency modulation; and (5) in a grid-connected mode, designing a pre-synchronization control strategy, and enabling the grid-forming inverter and the power grid to operate in a grid-connected manner. According to the invention, the frequency stability of the new energy high-permeability power system can be improved. In addition, the method only depends on local information, does not need a maximum power point estimator, a central controller or a solar radiation sensor, and has the advantage of low implementation cost.

The embodiment of the invention provides a photovoltaic module control device, and the device comprises at least one bypass module which is used for being connected with at least one photovoltaic module in parallel; the driving circuit is used for driving at least one bypass module to work under the control of the controller; the power supply module is used for obtaining electric energy from the at least one photovoltaic module and outputting the electric energy to the controller under the condition that the at least one photovoltaic module works normally and the at least one photovoltaic module is bypassed; and the controller is used for controlling the conduction state of the at least one bypass module so as to control whether the at least one photovoltaic module is in the bypass mode or not. The power consumption of the control device is greatly reduced, meanwhile, the problem of voltage stress borne by the first series switch tube in the series control device when the first series switch tube is disconnected is solved, and the safety performance of the bypass control device is improved.

The invention discloses an anti-disengaging type mechanical arm for mold manufacturing and a using method, and belongs to the technical field of mechanical arms, the anti-disengaging type mechanical arm comprises a mechanical arm body and a tail end executing structure installed on the mechanical arm body, the tail end executing structure comprises a parallel pneumatic finger and a micro air extracting pump, and clamping seat assemblies are connected to two clamping jaws of the parallel pneumatic finger. After the tail end executing structure grabs the mold base, clamping force of spherical elastic air bags in the flexible reinforcing units located in the negative pressure grooves and negative pressure adsorption force in the negative pressure grooves are overlapped and jointly and additionally act on the surface of the mold base, and the grabbing firmness of the tail end executing structure on the mold base is enhanced through the overlapped effect; and in the process that the vacuum degree in the negative pressure groove is gradually increased, the clamping force on the mold base is further increased through the spherical elastic air bag with the increased size, so that the grabbing firmness of the tail end execution structure is further enhanced, and the risk that the mold base falls off in the moving process is greatly reduced.

The invention belongs to the technical field of charging piles, and discloses a method and system capable of adjusting the output power of a charging pile in real time. Comprising the steps of obtaining pre-stage power distribution capacity and a safety power value of a charging pile; in the charging process, the charging pile collects the power value of the electric meter in real time; the charging pile adjusts output power according to the electric meter power value and the pre-stage power distribution capacity and the safety power value of the charging pile, the actual available power supply power is calculated through the pre-stage power distribution capacity and the safety power value of the charging pile, and the actual available power supply power is compared with the electric meter power value; according to the comparison result, the output power of the charging pile is increased, the output power of the charging pile is reduced or the current power is maintained, under the condition of safe electricity utilization, the method is economical and practical, and the technical problem that in the prior art, when the actual electricity utilization power of the charging pile exceeds the preceding-stage power distribution capacity, current overload in a power supply line is caused is solved.

The application discloses an integrated steel casing sinking device and a use method thereof, and the device comprises a spiral drill rod, a motion isolation unit, an elastic centering unit and the like. The outer wall of the spiral drill rod is provided with paddle-shaped blades capable of continuously rotating and ascending. The motion isolation unit comprises a positioning assembly, a positioning base body, a clamping groove arranged on the wall of the steel casing, and a clamping unit. The elastic centering unit comprises an abutting wheel, a rotating connecting block, a sliding telescopic rod, a centering spring sleeved on the outer wall of the sliding telescopic rod, a tail limiting groove and a drilling condition sensing unit. The spiral drill rod is used as a pile driving bit, so that the technical effect of excavating soil layers is achieved, and the paddle-shaped blades capable of spirally ascending are simultaneously used to automatically transport the excavated soil upwards. In addition, the motion state of the bit is isolated by using the motion isolation device, so that the motion isolation between the steel casing and the spiral drill rod rotating in the middle is achieved as a whole, and the rotation of the steel casing caused by the motion of the spiral drill rod is effectively blocked.

The invention discloses a robot monitoring device and a using method thereof, and relates to the technical field of robots. The ship comprises a ship body, a monitor fixedly installed on the ship body, a sail steering motor installed on the inner side of the ship body, and a sail fixing rod arranged at the output end of the sail steering motor. And the disc mechanism comprises a disc main body and a plurality of partition plates fixedly connected in the disc main body, and the multiple partition plates divide the disc main body into a plurality of fan-shaped cavities. According to the invention, a disc mechanism is designed, and the magnitude and direction of wind power are detected by using the motion trail of the small ball in the disc, so that intelligent adjustment of the power system is realized. The robot has the advantages of being low in cost and easy to maintain, the stable and reliable power adjusting function can be provided in the complex water area environment, and the cruising ability and operation flexibility of the robot in the water patrol process are improved.

The present application discloses a detection method, device and inverter system for an inverter system, and belongs to the technical field of inverter systems. The detection method for the inverter system includes: obtaining the output power corresponding to the target system connected to the at least one load; the target system is used to power the at least one load; the target system includes the photovoltaic system; based on the output power and the total power corresponding to the at least one load, performing arc detection on the faulty photovoltaic strings in the photovoltaic system. The detection method for the inverter system of the present application ensures the stability of load operation during arc detection, alleviates the impact of the reduction in the output power of the inverter system on load operation, improves the performance of the load and extends the service life of the load, reduces the safety hazards caused by unstable load operation, and improves the user experience.

This invention relates to the field of metallurgical machinery and equipment and metal processing, specifically to an anode steel claw straightening machine and its method; it includes a C-shaped straightening frame, a main hydraulic cylinder, an ultrasonic indenter with a built-in ultrasonic transducer, an antagonistic hydraulic compensation blind cavity, and an industrial control computer; the system connects the antagonistic hydraulic compensation blind cavity located on the back side of the vertical column with the oil inlet of the rodless chamber of the main hydraulic cylinder; its core is that when the main hydraulic cylinder pushes, the expansion trend generated synchronously by the blind cavity is used to apply a reverse prestress bending moment to the vertical column; this invention effectively counteracts the elastic backward tilting deformation of the frame caused by the reaction force of the main thrust, prevents the amplification of the displacement deviation at the execution end, and thus ensures a tight fit between the ultrasonic indenter and the surface of the anode steel claw.

The embodiment of the invention provides a power distribution method and device for an aircraft alternating-current high-power load, computer equipment and a medium, and the method comprises the following steps: obtaining the number of alternating-current channels of an aircraft, obtaining the alternating-current channel of each aircraft and all access loads in the load of an aircraft carrying system, and classifying the access loads; if the load is a long-time stable high-power load or a high-frequency pulse high-power load, the corresponding access load is averagely distributed to each alternating current channel, and if the load is an intermittent high-power load, the corresponding access load is distributed to an aerial carrier system load; and obtaining the maximum total power utilization power of the alternating current channel of each airplane and the load of the aerial carrier system, calculating the residual power utilization power, and sequentially distributing the access loads of which the load types are other loads to the alternating current channel of each airplane or the load of the aerial carrier system according to the residual power utilization power and the power utilization power of the other loads. According to the scheme, the problem of power supply system faults caused by overlarge load power is solved.

The utility model relates to a fan module and a parallel air supply mechanism. The utility model relates to a fan module, which comprises a shell, a fan cavity and an air duct cavity, the shell is provided with the fan cavity and the air duct cavity along the airflow direction, and the fan cavity is provided with an air inlet; one end of the air duct chamber is communicated and connected with the fan chamber, the other end of the air duct chamber is provided with an air outlet, and the air outlet horizontally discharges air or obliquely discharges air upwards relative to the horizontal plane; a certain angle is formed between the air inlet airflow direction of the air inlet and the air outlet airflow direction of the air outlet; and the fan is fixedly arranged in the shell, and the air inlet end of the fan faces the air inlet. According to the fan module disclosed by the utility model, eddy current pressure drop loss which is easy to occur when a plurality of fan modules are used in parallel can be effectively avoided; and meanwhile, modular design is adopted, the multiple fan modules can be connected in parallel to form a parallel air supply mechanism according to the actual air volume requirement, and noise reduction is achieved.

The utility model belongs to the technical field of energy storage, and particularly relates to a battery cell equalization circuit and an energy storage system, comprising a battery string formed by serially connecting battery cells, each battery cell is provided with a voltage conversion module in one-to-one correspondence, the input ends of the voltage conversion modules are connected in parallel with the battery cells, and the output ends of the voltage conversion modules are serially connected to form an equalization branch. And the equalization branch is connected with the battery series and parallel. According to the utility model, the battery string can be shunted in parallel through the equalization branch circuit formed by the voltage conversion modules, so that part of energy of the battery string is output through the equalization branch circuit. When the electric quantity or the voltage of the battery cell is unbalanced, the output power of the battery cell is adjusted through the voltage conversion module for equalization, and discharging equalization, charging equalization and off-line equalization are supported.

The invention discloses a heating mold and application of a hot forming process thereof.The mold comprises a workbench, a water cooling plate, a lower mold assembly and an upper mold assembly, the workbench is arranged on a machining equipment platform, the lower mold assembly is arranged on the machining equipment platform, and the upper mold assembly is arranged on the lower mold assembly; the water cooling plate is arranged on the upper die assembly, and the top of the water cooling plate is connected with a machining equipment sliding block. The die is suitable for common press equipment, complex transformation and addition of a water cooling system are not needed, the common press equipment and the hot forming die are isolated, and the equipment is prevented from being damaged by high temperature. The mold adopts the mica plate for heat preservation and heat insulation, rapid loss of temperature is avoided, the temperature stability of the mold can be guaranteed, and then the machining effect is guaranteed. Temperature field finite element analysis can be carried out according to ANSYS, repeated iteration adjustment is carried out, the temperature of a temperature control area is determined, and it is guaranteed that the temperature of all molded surfaces meets the process requirement.

The invention discloses a super capacitor and lithium ion battery hybrid energy storage frequency modulation system and a control method thereof, and belongs to the technical field of power system frequency modulation control. The super capacitor energy storage system and the lithium ion battery energy storage system are connected to the energy storage high-voltage alternating current bus through respective bidirectional converters and boosting transformers; the output end of the power synthesis device is connected to an RTU interface of a power grid dispatching system through a boosting transformer. The coordination controller is in bidirectional communication with the super capacitor CMS, the lithium ion battery BMS, the bidirectional converter PCS, the power synthesis device and the power grid dispatching system through the communication interface module, the fire fighting system, the video monitoring system and the heating and ventilation system are connected to an auxiliary monitoring channel of the coordination controller, and the prefabricated cabin provides a physical integration platform for all subsystems. According to the invention, through cooperative control of the super capacitor and the lithium ion battery, power output is dynamically distributed in a power grid frequency modulation instruction direction and a system state, and dual objectives of quick response and energy optimization are realized.

The application discloses a floating diving offshore platform, which comprises a base, a buoyancy unit, a floating diving unit, a mooring unit and a device box. The base is a net-shaped structure formed by the cross connection of multiple ropes. The buoyancy unit and the floating diving unit are fixedly connected above the base. The mooring unit is arranged around the base and connected with the floating diving unit. The floating diving unit and the mooring unit jointly act on the base to realize the floating and diving of the base. The device box for loading functional devices is detachably connected inside the base. The floating diving offshore platform can resist deep sea harsh sea conditions, has device arrangement and personnel activity space, reduces construction cost and solves the problem of difficult device replacement.

This invention belongs to the field of photovoltaic panel cleaning technology, specifically relating to an intelligent cleaning device and method suitable for large-angle flexible photovoltaic roofs. The intelligent cleaning device for large-angle flexible photovoltaic roofs includes an anchoring and traction system and a cleaning robot body. The anchoring and traction system includes a winch assembly installed on the roof, a composite cable connected to the winch assembly, and a central control unit. The composite cable integrates a traction rope, a power supply cable, and a water supply hose. The cleaning robot body is connected to the winch assembly via the composite cable and includes a walking and adsorption mechanism, an intelligent adsorption pressure control system, and a cleaning mechanism. The walking and adsorption mechanism is a tracked vacuum suction cup composite walking mechanism. The intelligent cleaning device for large-angle flexible photovoltaic roofs of this application enables safe, stable, and efficient fully automated cleaning operations on the surface of large-angle, flexible photovoltaic panels using the cleaning robot body.

This invention discloses a conveying mechanism and a glass manufacturing apparatus. The conveying mechanism includes a fixed part and a rotatable support part. The support part is equipped with an air jet point, and an opening and closing assembly is installed between the two. When the support part deforms due to heat and deviates from the fixed part, the opening and closing assembly automatically opens the air jet point, and the airflow generates a reverse lifting force to correct the bending. The fixed part has a hollow structure, with bearings at both ends forming a sealed air chamber. The opening and closing assembly consists of a sealing element and an elastic element, which normally closes the air jet point. The support part has a force-bearing element inside, and the airflow impact can provide rotational driving force. Multiple sets of conveying units are arranged synchronously to form a conveying surface. This invention relies on a purely mechanical adaptive structure to correct the deformation of the high-temperature roller shaft, integrates heat insulation, self-cleaning, and auxiliary drive functions, has a simple structure, and can reduce glass conveying deviation and scratch defects. It is suitable for high-temperature conveying conditions in float glass annealing.

A laser energy adjusting device disclosed by the present invention comprises a housing, two groups of frames, an attenuation assembly and an adjusting assembly, the two groups of frames are respectively located at the top and the bottom of the inner cavity of the housing, each group of frames is connected with the inner wall of the frame through a movable assembly, and the two groups of frames can be in face-to-face contact or away from each other in opposite directions. The attenuation assembly comprises a plurality of upper attenuation pieces and a plurality of lower attenuation pieces which are transversely distributed in the inner cavity of the housing in a staggered mode, the upper attenuation pieces are movably inserted into the frame body at the top, the lower attenuation pieces are movably inserted into the frame body at the bottom, and the adjusting assembly is used for enabling the upper attenuation pieces and the lower attenuation pieces of different numbers to be inserted into the light beam channel to adjust laser energy; the energy of unit time finally emitted by laser is adjusted by superposing different numbers of upper attenuation slices and lower attenuation slices, and the output power is not required to be reduced by reducing voltage and current, so that the laser works stably, the service life is long, and the stability of emitted laser beams is high.

This invention discloses a simulation method for a real-size mesh channel reverse electrodialysis power generation process, comprising the following steps: S1, simplifying the real mesh channel into a two-dimensional zigzag circular mesh using the flow resistance method, and calculating the equivalent radius of the two-dimensional mesh according to the area equivalence principle; S2, selecting the smallest periodic unit membrane pair for modeling on the x-y plane, dividing the mesh, and setting membrane and solution properties, operating parameters, and boundary conditions; S3, extending the multiphysics field changes to the entire membrane pair height using the boundary coupling method; S4, calculating the membrane-side diffusion boundary layer thickness and potential abrupt change, solving for the resistance of each part of the system, and evaluating the impact of concentration polarization and ion short-circuit current on the output power. The real-size mesh channel reverse electrodialysis power generation process simulation method disclosed in this invention achieves the continuity of multiphysics field changes in the entire flow channel from the membrane pair inlet to the outlet through the boundary coupling method.

The utility model relates to a modular leisure chair, which is characterized in that a seat frame, a backrest frame, armrest frames and back ear frames are respectively arranged in a modular seat cushion, a backrest, armrests and back ears of the chair, the backrest frame and the armrest frames are detachably arranged on the seat frame, and the back ear frames are detachably arranged on two sides of the backrest frame; a mounting seat is fixedly arranged at the lower part of the backrest frame, an air rod is arranged in the accommodating space, the output end of the air rod is connected with the connecting iron pipe, and the other end of the air rod is connected with the mounting seat; the air rod can act on the connecting iron pipe to drive the connecting piece assembly to act, so that the rear connecting iron piece is driven to rotate, the backrest frame can rotate by a certain angle to fall backwards, and the foot stool rotates by a certain angle to turn upwards. According to the scheme, the seat cushion, the backrest, the armrests and the back lugs in the seat are detachably connected and are convenient to disassemble and assemble, the loading quantity can be increased, transportation is facilitated, and the transportation cost is reduced; and a motor in the seat is replaced by the air rod, so that the manufacturing cost is saved.

The utility model relates to a power supply circuit and electronic equipment, and the power supply circuit comprises a first voltage conversion circuit, the first end of the first voltage conversion circuit is used for being coupled with a battery, and the first voltage conversion circuit is used for increasing the voltage of the battery; the first end of the second voltage conversion circuit is coupled with the second end of the first voltage conversion circuit, the second end of the second voltage conversion circuit is used for being coupled with a screen, and the second voltage conversion circuit is used for converting the output voltage of the first voltage conversion circuit so as to supply power to the screen; the first end of the third voltage conversion circuit is used for being coupled with the battery, the second end of the third voltage conversion circuit is used for being coupled with the screen, and the third voltage conversion circuit is used for converting the voltage of the battery to supply power to the screen. In the voltage conversion process, the third voltage conversion circuit only performs primary voltage conversion, so that the loss is reduced, and the conversion efficiency of the power supply circuit is improved.

The invention discloses a multi-parameter linkage controllable fire point simulation device for fire-fighting training and a control method. The device comprises a physical execution system, an environment sensing system and an intelligent central controller. The physical execution system simulates fire scene environment characteristics, the environment sensing system collects device operation states and environment parameters in real time, and the intelligent central controller is connected with the physical execution system and the environment sensing system to achieve multi-parameter cooperative linkage control. The intelligent central controller has the functions of data processing, instruction analysis and linkage control, receives an external control instruction, analyzes the instruction into specific operation parameters of the physical execution system, and dynamically adjusts the operation state of each module through a preset algorithm according to the feedback data of the environment sensing system, thereby completing the synergistic linkage of flame lighting effect, smoke and airflow. And the system has abnormal alarm and protection functions. The preset algorithm constructs a closed-loop adjustment model based on monitoring data and preset parameters, and the adjustment amount is deduced in a sub-module manner and is cooperatively corrected in a linkage manner. And actual combat requirements of modern fire-fighting training are met.

The invention discloses an integrated cycloidal-pin wheel speed reducer and a regulation and control method, and particularly relates to the technical field of speed reducers. The speed reducer comprises a frameless torque motor assembly and a cycloidal-pin wheel speed reduction assembly; the frameless torque motor assembly comprises a driving unit and a motor tail supporting seat. The cycloidal-pin gear speed reduction assembly comprises a first cycloidal gear, a second cycloidal gear, a pin gear shell and an eccentric shaft. Needle teeth are mounted on the inner wall of the needle tooth shell; the driving unit is connected with the cycloidal-pin wheel speed reduction assembly through an eccentric shaft. The eccentric position of the eccentric shaft is sleeved with the first cycloidal gear and the second cycloidal gear through the first needle bearing and the second needle bearing respectively, and the pin gear shell is arranged on the surface of the first cycloidal gear and the surface of the second cycloidal gear. The first cycloidal gear and the second cycloidal gear are arranged in a 180-degree symmetrical structure. The input flange and the shell of the frameless torque motor assembly are integrally designed, the coaxiality of the input end and the output end is improved, the operation stability is improved, and therefore more space is saved on the whole.

The application discloses a high-frequency sample fusion machine protection device and a control method thereof, and belongs to the technical field of high-frequency sample fusion machines. The device comprises a high-frequency sample fusion machine, a water cooling device, a temperature detection module and a controller. The coil of the high-frequency sample fusion machine is electrically connected with a power module, and the water cooling device cools the coil and the power module through independent pipelines respectively. The temperature detection module is attached to the coil return water pipe and detects the cooling water temperature in real time and transmits the temperature to the controller. The real-time temperature is acquired by the controller, and when the temperature is higher than a preset safety temperature threshold, the controller controls the power module to be closed or the output power to be reduced. Through real-time temperature monitoring and power linkage control, the application solves the problem that the coil is damaged due to high temperature caused by cooling failure and personnel are scalded by vaporized cooling water in the prior art. The automatic protection can be realized without manual intervention, the service life of the coil is effectively prolonged, and the operation stability and safety of the high-frequency sample fusion machine are improved.

The invention belongs to the technical field of power system automation, and particularly relates to an island micro-grid online hierarchical control method, device and equipment and a medium. The method comprises the following steps: after a power distribution network fault occurs, constructing each island micro-grid based on energy storage equipment and distributed photovoltaics; constructing a layered voltage / reactive power control model based on the three-phase unbalanced power distribution network model of the island micro-grid; the layered voltage / reactive power control model comprises an objective function with the minimum sum of the voltage deviation and the reactive power cost generated by the distributed photovoltaic inverter, and a constraint condition corresponding to the objective function; introducing an auxiliary variable vector to reconstruct the layered voltage / reactive power control model to obtain a problem equivalent model; and based on constraint conditions, solving the problem equivalent model by using a quasi-Newton ADMM method to obtain an island micro-grid online hierarchical control strategy. According to the scheme, the problem of voltage safety after photovoltaic grid connection of the island microgrid is solved by utilizing inherent photovoltaic resources in the island, and voltage autonomy is realized.

The invention discloses a terahertz dielectric folded plane metasurface optical collimator and an application thereof. The optical collimator comprises a top plane metasurface and a bottom plane metasurface which are arranged in parallel and are made of dielectric materials. A first spacing distance is formed between the top plane metasurface and the bottom plane metasurface; the top plane metasurface comprises two grating structures with a second spacing distance, and the grating structures are used for selecting expected linear polarization terahertz waves to pass through; the bottom plane metasurface comprises a bottom surface supporting plate and a plurality of rectangular anisotropic dielectric resonators arranged on the bottom surface supporting plate; the plurality of rectangular anisotropic dielectric resonators have different resonant frequencies along the transverse axis direction and the longitudinal axis direction; and a terahertz source is arranged at the center of the bottom surface supporting plate.

A hybrid power supply system of diesel multiple unit is disclosed. When a train is running, an energy management module sends a level signal of a master controller of the train to an inverter, and the inverter, according to the received level signal of the master controller and the dynamic performance of the hybrid power supply system, sets an envelope curve of train speed vs. traction force and an envelope curve of train speed vs. regenerative braking force to control a traction motor to output the corresponding torque. Further, the inverter, according to the voltage and current values acquired at the input end, calculates and sends a current actual demanded power to the energy management module, the energy management module, according to the current available power of a supercapacitor, calculates a required output power and sends a command of the required output power to a rectifier, and the rectifier, according to the command of the energy management module, controls the internal electric power pack to output corresponding power. The system is simple in structure and reliable in control, and can increase the dynamic performance of the train and improve the transportation capability of the train. A hybrid power supply method for a diesel multiple unit is also disclosed.

The invention discloses a deep peak regulation system provided with a steam ejector and a heat storage device and an operation method. The deep peak regulation system comprises a coal-fired power generation system, a heat storage loop and a steam ejector loop. When load rising wet state is converted into dry state, recirculating water separated by a boiler steam-water separator is heated through fused salt and mixed with main steam, meanwhile, high-pressure heater feed water is bypassed, steam extraction flow of a steam turbine is reduced, power capability of the steam turbine is rapidly increased, and the temperature of the feed water is reduced due to reduction of the recirculating water and the high-pressure heater steam extraction. The heat storage loop and the steam ejector loop are used for storing energy, water is heated, the enthalpy of an inlet of the water cooling wall is reduced, and rapid state transition is achieved; and when the load reduction dry state is converted into the wet state, the molten salt is heated by bypass reheat steam, the steam is recycled into the steam storage tank, and the output power of the unit is rapidly reduced. Through steam-water working medium circulation path reconstruction and fused salt / steam and other multi-medium energy storage cross-space-time regulation and control, ultra-low load dry-wet rapid state transition of the coal-fired unit is achieved, and the deep peak regulation capacity of the unit is improved.

This invention relates to the field of intelligent lighting and energy-saving control technology, and discloses an energy-saving LED intelligent lighting device based on ambient light sensing, including a lamp body and an LED light-emitting module disposed therein. The LED light-emitting module includes at least three groups of LED light-emitting chips with different spectral characteristics; it also includes an ambient light sensing module, a human behavior sensing module, a power consumption detection module, a dimming drive module, and a processing module. The processing module generates target visual illuminance parameters based on ambient illuminance information, user behavior status, and historical light consumption data, and establishes a lighting output model based on the illuminance contribution characteristics of each group of chips; the power consumption detection module provides real-time feedback of operating parameters to form a closed loop; the processing module compares dynamically optimized power consumption with a fixed ratio benchmark power consumption to generate energy-saving quantification and carbon emission reduction data. This invention achieves real-time optimal control of system energy consumption while meeting both visual and non-visual lighting needs.

The application provides a reverse current prevention method and device of a photovoltaic power supply system, a terminal and a storage medium. The method comprises the following steps: acquiring electric energy data of a low-voltage power grid in real time; subtracting the electric energy data at a previous moment from the electric energy data at a current moment to obtain an electric energy difference; if the electric energy difference is greater than a first preset threshold, adjusting a photovoltaic inverter based on the electric energy difference to reduce the output power of the photovoltaic inverter; if the electric energy difference is greater than a second preset threshold, controlling the photovoltaic inverter to stop; and if the electric energy difference is greater than a third preset threshold, controlling a contactor to be disconnected. The first preset threshold is smaller than the second preset threshold, and the second preset threshold is smaller than the third preset threshold. Through the above scheme, the application can perform hierarchical reverse current prevention control according to the size of a local load surge, thereby improving the reverse current prevention response speed and guaranteeing the interests of photovoltaic power generation users.