52results about How to "Solve energy loss" patented technology

The invention relates to a hydraulic control device for a dual-clutch automatic transmission, and the hydraulic control device comprises first and second pressure control valves, and first and second clutch cylinders, wherein the fuel inlet of the first pressure control valve is communicated with a main fuel line, the fuel outlet thereof is communicated with the first clutch cylinder and the fuel return opening thereof is communicated with a fuel tank; a first safety valve is arranged between the first pressure control valve and the first clutch cylinder, the fuel inlet thereof is communicated with a first branch fuel line, and the fuel return opening thereof is communicated with the fuel tank; the fuel inlet of the second pressure control valve is communicated with the main fuel line, the fuel outlet thereof is communicated with the second clutch cylinder, and the fuel return opening thereof is communicated with the fuel tank; a second safety valve is arranged between the second pressure control valve and the second clutch cylinder, the fuel inlet thereof is communicated with a second branch fuel line, and the fuel return opening thereof is communicated with the fuel tank. By the hydraulic control device, the clutch still can release pressure when the pressure control valve is in trouble and the hydraulic system can be prevented from energy loss.

The invention discloses an intelligent mosquito killer which is improved. The intelligent mosquito killer comprises a body, the body is provided with a mosquito suction opening, a draught fan, an electric mosquito net, a controller and a mosquito-lured lamp, the draught fan is located behind the mosquito suction opening, the electric mosquito net is located between the mosquito suction opening and the draught fan, and the mosquito-lured lamp is arranged in the mosquito suction opening. The intelligent mosquito killer is characterized in that a body temperature inductor used for detecting the body temperature of mosquitoes is arranged at the front end of the mosquito suction opening, the body temperature inductor is electrically connected with the controller, and only when mosquitoes pass through the mosquito suction opening, can the electric mosquito net and the draught fan be started. The intelligent mosquito killer has the advantages of being low in energy consumption, convenient to use and durable.

The invention provides a 360-degree scanning laser distance measuring system and distance measuring method. The distance measuring system includes a distance measuring component and a rotation drivingcontrol component; the distance measuring component rotates on the whole under the driving of the rotation driving control component, measures a distance between a measured object and a laser radar after receiving a distance measuring instruction sent by the rotation driving control component, processes measured distance data and transmits the processed distance data to the rotation driving control component through an optical communication mode; and the rotation driving control component is used for driving the distance measuring component to perform 360-degree rotation, sends a distance measuring instruction to the distance measuring component through an optical communication mode and receives distance measuring data sent by the distance measuring component. With the 360-degree scanninglaser distance measuring system and distance measuring method of the invention adopted, limitations such as energy loss and low possibility of realizing 360-degree scanning angles which are caused bya condition that a traditional scanning laser distance measuring system uses a reflector to performing scanning can be eliminated. The 360-degree scanning laser distance measuring system of the invention has the advantages of easiness in realizing miniaturization, long service life and extended application range.

The invention provides a charge and discharge same-interface control supercapacitor management apparatus and a system thereof. The apparatus comprises an acquisition detection module connected with single supercapacitors in a supercapacitor module and used for acquiring the voltage, current and temperature of the single supercapacitors; a main controller connected with the acquisition detection module and used for determining the charge and discharge state of the single supercapacitors according to the voltage and the current and controlling the motion of the acquisition detection module, a charge and discharge control module, and a data interaction module; a charge and discharge control module connected with the main controller, a charging controller of the supercapacitor module and a discharge controller of the supercapacitor module and used for controlling the on-off state of the charging controller and the discharge controller according to the charge and discharge state; and a data interaction module connected with loading equipment, the main controller, and the charge and discharge control module and used for data interaction between the acquisition detection module and the charge and discharge control module. According to the apparatus and the system, the energy loss during charge and discharge same-interface control can be reduced.

To improve production efficiency and continue good burning, and to avoid to carry out troublesome separation and discarding with use of container made of glass or metals, it is provided a transparent candle having a container filled with a candle composition, the candle composition having a wick embedded therein, wherein the candle composition has a melting point of 50° C. to 70° C. while the container is formed mainly of natural wax having a melting point higher than the melting point of the candle composition. All of these materials can utilize natural materials to decrease the melting point of the candle composition, thereby resulting in not only a reduced consumption of energy required for melting the materials during manufacturing and an improved production efficiency, but also better soaking up by the wick due to its melting at low temperatures, no accumulation of soot in the wick, and allowing flames not to go out even when burning is continued.

The invention discloses a permanent magnet operating mechanism for a circuit breaker. The permanent magnet operating mechanism comprises a stator magnet yoke, a movable iron core, a driving rod, a closing buffer coil, an assistant opening coil, a main closing coil, a permanent magnet, an opening buffer coil, an assistant closing coil and a main opening coil, wherein the movable iron core is arranged in the stator magnet yoke; the closing buffer coil, the assistant opening coil and the main closing coil are arranged on the inner side of the upper part of the stator magnet yoke; the permanent magnet is arranged on the inner side of the middle part of the stator magnet yoke; the opening buffer coil, the assistant closing coil and the main opening coil are arranged on the inner side of the lower part of the stator magnet yoke. According to the permanent magnet operating mechanism for the circuit breaker, a starting current is reduced and the starting time is shortened in an opening and closing process; the problem of energy loss when the starting current is larger in difference in the opening and closing process is solved; the end speed of the opening and closing operation of the permanent magnet operating mechanism can be reduced, and the mechanical life of the permanent magnet operating mechanism is prolonged; the eddy current of the movable iron core and the heating loss are reduced, and the efficiency of the permanent magnet operating mechanism is improved.

The invention discloses an overvoltage protection circuit and overvoltage protection method for a wireless charging receiving end. The circuit comprises a receiving coil which receives in a resonance mode energy transmitted by a transmitting coil and converts the energy into an alternating voltage; a resonance matching network which is connected with the receiving coil and is used for adjusting the frequency of the receiving coil; a rectifying circuit which is used for carrying out rectification conversion on the alternating voltage to generate a direct current charging voltage; and a detection circuit. The detection circuit detects the amplitude of the direct current charging voltage and compares the amplitude with a set safety threshold. If the amplitude of the charging voltage exceeds the set safety threshold, the resonance matching network is controlled to adjust the working frequency of the receiving coil, so that the working frequency point of the receiving coil at the transmitting coil is in an unresonance state, the voltage received by the receiving coil is reduced, and a design purpose of carrying out overvoltage protection on the receiving end is realized. The circuit and the method are simple in design and reliable in work. The charging safety of a power utilization device is greatly improved.

The invention discloses a method for setting the period of a broadcast channel, which is used for setting the period of the broadcast channel of a femto base station at low power consumption mode. In the method, the femto base station sets the period of the broadcast channel according to the parameters of a terminal in an idle mode within the control range. Due to the technical scheme of the invention, frequent location update is avoided when the broadcast of the femto base station is not received by the terminal in the idle mode, and the unnecessary power waste of the terminal is reduced.

The invention aims to provide a method for reducing the steel rolling steel process energy consumption per ton steel. The method includes A. acquiring the historical data of the key parameters involved in the steel rolling process, and constructing a mathematical model of the tapping temperature and the energy consumption per ton steel; B. acquiring the key parameters in the real-time production to be used as the initial values of the key parameters; C. introducing the initial values of the key parameters into the mathematical model of the tapping temperature and the energy consumption per ton steel to obtain the predicted values of the tapping temperature and the energy consumption per ton steel; D. randomly optimizing the initial values of the key parameters to obtain the temporary optimized values of the key parameters, calculating the temporary optimized values of the tapping temperature and the energy consumption per ton steel, and determining the validity of the temporary optimized values; E. performing continuous cycle optimization until the regulated target values of the key parameters are obtained; and F. inputting the regulated target values of the key parameters into the steel rolling process control system to control the steel rolling process. The method overcomes the shortcomings of high reconstruction cost and bad control precision in the prior art and has the characteristics of stabilizing the tapping temperature and reducing the energy consumption per ton steel.

The invention discloses a hybrid power gearbox hydraulic system and a vehicle, and relates to the field of vehicles. In the hybrid power gearbox hydraulic system, a hydraulic power source unit comprises a first oil pump, a second oil pump and a motor, the first oil pump and the second oil pump are coaxially connected, and the motor is connected with the first oil pump or the second oil pump; and an oil outlet of the first oil pump is connected with a main oil way unit, and an oil outlet of the second oil pump is connected with a cooling lubrication flow adjusting unit. A clutch pressure adjusting unit and a gear shifting pressure adjusting unit are connected with the main oil way unit, the gear shifting pressure adjusting unit is connected with a gear shifting direction adjusting unit, andthe gear shifting direction adjusting unit is connected with a gear shifting executing element. Separation of a main oil way and a cooling lubricating oil way can be achieved, and energy loss causedby pressure increase and then pressure reduction of cooling lubricating oil and excessive waste of pump oil at a high rotating speed are avoided.

The invention discloses a laser tunnel furnace light beam micro-integration focusing method and device. The method comprises the followings steps: generating laser light through a high-power laser emitter, wherein the diameters of light spots are adjustable; introducing laser beams into a multi-pass spectrometer for uniformly splitting a single laser beam into a plurality of laser beams which are equal in energy and light spots; introducing the laser beams into a laser beam emitting head through an optical fiber, wherein the laser beam emitting head is fixed on a bracket; the extension line of the axis of an installing hole in the bracket intersects with the shaft core of a carbon fiber; a plurality of laser beams are focused on the carbon fiber passing through the center of the bracket. According to the laser tunnel furnace light beam micro-integration focusing method and device, a plurality of laser beams which are equal in energy and light spots are generated through the integration function of the multi-pass spectrometer, so that the problem of high cost caused by the use of a plurality of laser generators is solved. The laser emitting head bracket has a special structure, so that circumferential focusing of the laser beams is ensured, the aim of uniformly heating the carbon fiber in the circumferential direction is further fulfilled, and the problem of energy loss caused by lens focusing is solved.

The invention provides a capacitor static voltage balance control method and system for a modular multilevel converter. The capacitor static voltage balance control method comprises the following steps of: acquiring a capacitor voltage uck of a power module k; judging a relation between a capacitor voltage threshold value uq and the capacitor voltage uck when the input characteristics of an energy-taking power supply are self-adjusted; and adjusting and controlling the input characteristics of the energy-taking power supply of the power module k through using a self-energy-taking power supply input characteristic self-adjusting signal dpsk according to the judgment result, and indirectly changing the capacitor static voltage of the power module of the modular multilevel converter. By automatically adjusting the input characteristics of the energy-taking power supply, the capacitor static voltage of the power module of the modular multilevel converter is indirectly changed, and the technical problems of energy loss and efficiency reduction caused by the fact that a power resistor with a proper resistance value is adopted to be connected with the module capacitor in parallel to restrain capacitor voltage divergence in the prior art are solved.

The invention relates to a heat-preservation anti-freezing road and a construction method thereof, and belongs to the field of building materials and construction. The road is formed by sequentially laying a crushed stone layer, a cement stabilized layer, a heat insulation layer, a heating layer, an asphalt concrete layer and a heat-preservation coating layer on a leveled and cleaned pavement baselayer from bottom to top, external solar energy is used for heating, and silica aerogel is used as a substrate, so that the problem of energy consumption loss caused by the fact that heat of the heating layer is transmitted to the ground can be effectively solved, heat conduction oil adopted by the heating layer has an extremely strong absorption and conduction effect on solar energy heat release, and an iced road surface can be effectively melted. Good application prospects are realized on road ice melting in cold regions.

The invention discloses a punching machine with an automatic energy storage device. The punching machine comprises a punching machine body, a flywheel disc assembly, an air compression device, a transition bridge device and the energy storage device. A controller is arranged at the edge of the punching machine body. The flywheel disc assembly is arranged on one side of the upper portion of the punching machine body. The air compression device is arranged on one side of the punching machine body and located below the flywheel disc assembly. The transition bridge device is arranged on one side of the punching machine body. The energy storage device is arranged on the rear side of the punching machine body. According to the punching machine with the automatic energy storage device, the problem of energy loss when a clutch of the punching machine is disengaged and a flywheel is in an idle state can be effectively solved, the overall ineffective energy consumption of the punching machine isreduced, and energy is saved.

The invention discloses a pulse laser zoom irradiation device. Beam splitting and waveform segmenting of optical pulse are simultaneously realized by directly using Glan prisms of electro-optical clipping switches, the fidelity of the optical pulse after beams are combined is guaranteed by adopting the aplanatic optical path design, and the change of focal spots is realized by using lenses with equal focal lengths and object hole diaphragms with different sizes. Compared with a conventional device, the pulse laser zoom irradiation device has the advantages that less electro-optical clipping switches are used, so that the utilization rate of incident light pulse energy is greatly improved; moreover, the device has extendibility, and multi-step light beam zoom irradiation can be obtained.

A corrugator system for corrugating metallic foil tape. The corrugated metallic foil tape made by the system is suitable to be applied to contoured or three-dimensional surfaces, and is particularly suitable for use in sealing or joining components of heat, ventilation, and air conditioning (HVAC) units.

The invention discloses a mine well mouth anti-freezing air heating device based on methyl alcohol nano catalytic oxidation, and belongs to the technical field of mine well mouth anti-freezing air heating devices. The improvement of the structure of the mine well mouth anti-freezing air heating device based on methyl alcohol nano catalytic oxidation is provided in order to solve the technical problem. According to the technical scheme used for solving the technical problem, the mine well mouth anti-freezing air heating device comprises a reaction device and a heating device, wherein the reaction device and the heating device are arranged on a mounting base and arranged side by side; and the reaction device is a multi-cavity box body formed by multiple steel plates, a reaction bed waste heat cavity, a new air exchange cavity and an initial air heat exchange cavity are sequentially formed in the reaction device from bottom to top, an evaporation heat exchange cavity is formed in the heating device, multiple exchanger heat pipes are vertically arranged in the evaporation heat exchange cavity, a hot air outlet is formed in one end of the heating device, and a hot air inlet is formed inthe other end of the heating device. The mine well mouth anti-freezing air heating device is applied to the field of mine well mouth air heating devices.

The invention discloses a movable agricultural product storage system which is a closed shell. A heat insulation and preservation layer, a storage bin, a refrigeration bin and a gas replacement bin are arranged inside the shell, the heat insulation and preservation layer wraps the storage bin, the refrigeration bin and the gas replacement bin are arranged at the end of the shell, the top of the storage bin is provided with a feeding inlet to be connected to the outer side of the shell, the bottom of the storage bin is provided with a discharging outlet to be communicated with the outer side ofthe shell, a plurality of guiding plates inclined downwards are arranged at different heights inside the storage bin, the two guiding plates at the adjacent heights are symmetrically installed at thetwo sides of the storage bin, and an inclined base plate is arranged at the bottom of the storage bin; the guiding plates and a refrigeration pipeline are combined, the refrigeration pipeline is usedfor supplying refrigeration gas to the storage bin and further used for buffering impact force generated by an agricultural product in the falling process, and damage caused when the agricultural product collides is avoided; the guiding plates and the base plate can be used for guiding and discharging and are combined with the refrigeration pipeline, and the refrigeration gas can be uniformly distributed inside the storage bin conveniently through the refrigeration pipeline.

The invention discloses a molten salt storage tank heat exchange system. The system includes a molten salt storage tank, a heater, a circulating fan, an airway, an air outlet pipe, air holes and self-opening-closing devices; the circulating fan is arranged outside the storage tank; the inlet of the circulating fan communicates with the internal of the storage tank; the outlet of the circulating fan is connected to the heater; one end of the heater is connected to the circulating fan, and the other end of the heater is connected to the airway; the airway is connected to the air outlet pipe; theair holes are arranged in the air outlet pipe; and the self-opening-closing devices are arranged outside the air outlet pipe and can automatically make the air holes to open or close. Through the system, the self-opening-closing devices can effectively solve the problems of energy loss caused by short circuit phenomenon that, when partial air holes are immersed by molten salt in the storage tank,large amount of hot air used for cyclic heating directly returns to the circulating fan for the next cycle after overflowing through the air holes that are not immersed and does not take part in theheating on the molten salt in the storage tank.

The invention discloses a capillary hung ceiling paving method and a capillary network temperature adjusting system. The capillary network temperature adjusting system comprises capillaries, main pipes connected with the capillaries and auxiliary keels; the thickness of the auxiliary keels is not greater than 30mm, a water-proof board is arranged through the auxiliary keels, the thickness of the water-proof board is in the range of 11-13mm, and the capillaries are paved on the lower side of the water-proof board; and a structural layer for coating the capillaries and with the thickness not less than the capillaries is formed on the lower side surface of the water-proof board through mortar spraying, a heat dissipation fiber screen for heat dissipation is formed by the structural layer andthe capillaries, and the thickness of the structural layer is in the range of 12-15mm. The capillary network temperature adjusting system is only provided with the auxiliary keels, the overall thickness of the auxiliary keels is not greater than 30mm, compared with a traditional keel structure with the thickness greater than 100mm, the structural design can decrease the overall thickness of the capillary network temperature adjusting system to a great extent, and the problem of capillary energy loss existing in a capillary network air conditioning system is solved.

The invention discloses a pulse laser zoom irradiation device. Beam splitting and waveform segmenting of optical pulse are simultaneously realized by directly using Glan prisms of electro-optical clipping switches, the fidelity of the optical pulse after beams are combined is guaranteed by adopting the aplanatic optical path design, and the change of focal spots is realized by using lenses with equal focal lengths and object hole diaphragms with different sizes. Compared with a conventional device, the pulse laser zoom irradiation device has the advantages that less electro-optical clipping switches are used, so that the utilization rate of incident light pulse energy is greatly improved; moreover, the device has extendibility, and multi-step light beam zoom irradiation can be obtained.

The invention discloses an automobile intercooling fan control circuit. The automobile intercooling fan control circuit comprises an engine control module, an automobile body control module, an intercooler fan, a high-speed fan, a low-speed fan, a main relay, an intercooler fan control relay, an intercooler fan relay, a low-speed fan relay, a high-low-speed fan relay and a high-speed fan relay. The engine control module is connected with the main relay, the intercooler fan control relay, the low-speed fan relay, the high-low-speed fan relay and the high-speed fan relay. The automobile body control module is connected with the intercooler fan relay. The intercooler fan control relay is connected with the intercooler fan relay, the low-speed fan relay, the high-low-speed fan relay and the high-speed fan relay. The intercooler fan is connected with the intercooler fan relay. The high-low speed fan relay is connected with the high-speed fan and the high-speed fan relay. According to the automobile intercooling fan control circuit, the intercooling temperature can be accurately controlled, and effective exertion of engine performance and compliance of emission are achieved.

The invention discloses a track elastic pressing device, a track robot and a method, comprising: a base, a bearing seat fixed on the base, and a swing arm bracket connected to the bearing seat through a bearing; On both sides of the swinging direction of the arm bracket, elastic tensioning parts are respectively arranged, and one end of the elastic tensioning part is connected with the swing arm bracket, and the other end is fixed to the base through the connecting piece; pieces. Beneficial effects of the present invention: The present invention designs a swing arm type track elastic pressing device for a slope track environment, which can increase the pressing force of the robot on the track during a steep climb and improve the climbing ability of the robot. The design can avoid the jamming phenomenon of the vertical contact pressing mechanism during climbing, and solve the problem of poor climbing ability of orbital robots.

The invention relates to an automatic electric energy storage pipe column conveying device for well servicing. The automatic electric energy storage pipe column conveying device for well servicing comprises a lifting mechanism, wherein the lifting mechanism is fixed onto a base body; two ends of a feeding mechanism are respectively hinged with the lifting mechanism and the base body; a transfer gearbox is connected with the lifting mechanism and the feeding mechanism through two output shafts; a coiling block is connected onto the lifting mechanism and pulls the bottom end of a lifting frame to move through a flexible rope so as to jack the feeding mechanism; a gear rack mechanism is fixed onto the feeding mechanism; a gear set rotatably moves forwards on a rack set and is used for pushinga V-shaped groove to move parallelly along a conveying arm slideway; and the transfer gearbox is used for transmitting a motor drive force to the gear set and the coiling block. The automatic electric energy storage pipe column conveying device for well servicing provided by the invention is used for lifting a pipe column to a wellhead from the ground, and effectively solves the problems of hydraulic oil leakage, energy loss and low transmission efficiency of a pipe column conveying device based on hydraulic transmission, difficulty in working under the severe environments such as high temperature and low temperature, and idle work of the mechanism when the pipe column and an empty slot descend, so that the energy utilization rate and the transmission efficiency are improved.

The invention relates to a magnetic shielding block and a wireless power receiver including the same. The wireless power receiver is disclosed. The wireless power receiver includes a reception coil for wirelessly receiving AC power, a plurality of shielding members disposed on the reception coil for blocking magnetism, and an adhesive member for adhering the shielding members and the reception coil to each other, wherein the shielding members are made of different materials.

Disclosed is a method for preparing quasi-periodic micro-lens arrays through femtosecond laser wet etching. The method comprises that the velocity of a target material moved by an accurate processing platform is controlled according to the individual average size of quasi-periodic micro lenses needed to be processed, femtosecond lasers act for one pulse on the target material surface at a fixed interval, and a light damage area is produced on the target material with the acting focus of each femtosecond laser pulse serving as a center; chemical corrosion is performed on the target material processed by the femtosecond lasers through a hydrofluoric acid solution with a volume concentration in a range of 1% to 10%, and ultrasonic water-bath heating is assisted; and the corroded target material is cleaned thoroughly in deionized water to obtain a template finished product of mass quasi-periodic micro-lens arrays. The method has the advantages of being high in efficiency, low in cost, controllable in micro-lens individual shape size and the like, and negative effects of air breakdown effects of laser focusing, periodic light field coupling stacking effects and the like generated in a dodging process can be prevented effectively.

The invention discloses an aggregate heat exchange system and method. The aggregate heat exchange system comprises an aggregate heat exchange device, wherein the parts, close to the upper end and the lower end, of the aggregate heat exchange device are connected with a first main pipeline and a second main pipeline correspondingly, and the first main pipeline and the second main pipeline are both connected to a condenser; a compressor is arranged on the first main pipeline, a second stop valve is arranged on the first main pipeline between the compressor and the condenser, and a fourth stop valve is arranged on the first main pipeline between the compressor and the aggregate heat exchange device; and a thermostatic expansion valve is arranged on the second main pipeline, and a sixth stop valve is arranged on the second main pipeline between the thermostatic expansion valve and the condenser. By adopting the structure, a refrigerant absorbs external heat in the heat exchange device to be heated and converted into steam, heat is released in the condenser for cooling and liquefying, the fine aggregate is pre-cooled during heat absorption, and the fine aggregate is heated during heat release. The problem of energy loss existing when cooling water serves as a refrigerant is solved, meanwhile, the problem that the temperature of the cooling water cannot be lower than 0 DEG C is solved, and the more efficient aggregate heat exchange treatment process is achieved.

The invention discloses a vacuum rotating assisting device with fan-shaped iron handles. The vacuum rotating assisting device comprises a power input shaft and a power output shaft. The power input shaft is sleeved with a first hemispherical cover, and a first shaft sleeve is mounted on the first hemispherical cover. The first shaft sleeve communicates with a first bearing pedestal, and at least three singular first spokes are mounted at the inner end, on the inner side of the first hemispherical cover, of the power input shaft. A first annular ring is mounted on the inner side of the power input shaft, and the other end of each first spoke is connected with an energy gathering fan-shaped iron handle. The other side of each energy gathering fan-shaped iron handle is connected with a secondspoke. The second spokes are connected to the power output shaft. A second annular ring is mounted on the inner side of the power output shaft, and the inner end of the power output shaft is sleevedwith a second hemispherical cover. A second shaft sleeve is mounted on the convex face of the second hemispherical cover, and the second shaft sleeve communicates with a second bearing pedestal. According to the vacuum rotating assisting device with the fan-shaped iron handles, the problem that the kinetic energy of a prime motor cannot be remarkably increased along with rise of the speed is solved.

The invention discloses a distributed photovoltaic power station user side three-phase imbalance counter-current prevention device and method. The counter-current prevention device is composed of a rectified three-phase circuit, a bidirectional DC-DC conversion, an energy storage battery and a microprocessor connected in parallel at the load side; an incoming line end of the rectified three-phasecircuit is connected with an outgoing line end of a photovoltaic inverter, and the outgoing line end thereof is orderly connected with the bidirectional DC-DC conversion circuit and the energy storagebattery to form a charging main loop of the imbalance current; the outgoing line end of the rectified three-phase circuit is connected with the incoming line end of the inverter through a contactor switch so as to form a battery discharging loop; the microprocessor realizes the charging / discharging control on the battery by driving the rectified three-phase circuit, the contactor switch and the DC-DC circuit switch tube. The distributed photovoltaic power generation and the battery energy storage system are combined, the problem of the countercurrent power of the current caused by the three-phase load imbalance at the user side is solved by connecting the energy storage system in parallel at the load side, and the safe, stable and economic operation of the system is effectively guaranteed.