40results about How to "Reduce power loss" patented technology

The application relates to a full GaN power electronic monolithic integrated circuit and a preparation method thereof, which comprises, from bottom to top, an insulating composite substrate, an AlN layer, a Si layer, a GaN / AlGaN buffer layer, a GaN layer and an AlGaN layer; a 2DEG layer is formed between the GaN layer and the AlGaN layer; the AlGaN layer is etched, a p-GaN layer is grown; a p-GaN layer gate portion is etched and filled with a passivation layer, and a gate metal is grown; source metal and drain metal are respectively grown on both sides of the p-GaN layer gate area; a deep groove is arranged between a driving circuit and a low-voltage tube, between a high-voltage tube and the low-voltage tube, and a medium is filled in the deep groove; and the full GaN power electronic monolithic integrated circuit is obtained through a top via and an interconnection process. The application can realize high efficiency and low power consumption, low parasitic effect, and reduce leakage current and switching loss.

The application provides a vehicle hibernation method, medium, vehicle and product, relates to the technical field of vehicle control, and the method comprises the following steps: generating a hibernation preparation instruction and sending the hibernation preparation instruction to an electronic control unit on the vehicle under the condition that the vehicle meets hibernation conditions; receiving confirmation information fed back by the electronic control unit based on the hibernation preparation instruction, performing state detection on the vehicle based on the confirmation information, and obtaining a detection result; wherein the confirmation information is used to indicate that the electronic control unit has completed a hibernation preparation task indicated by the hibernation preparation instruction; and if the detection result indicates that the vehicle is in a standby state, performing a whole-vehicle hibernation operation. The technical scheme of the application sends a hibernation preparation instruction to the electronic control unit first, so that the electronic control unit has sufficient time to complete the hibernation preparation task, effectively avoids the task execution risk caused by direct forced hibernation, improves the reliability and robustness of the vehicle hibernation process, and guarantees the integrity and safety of the vehicle function.

The invention discloses a wind power frequency modulation parameter optimization method considering frequency modulation performance and energy loss. The method comprises the following steps: constructing a power system frequency response model aggregating a single-machine synchronous unit and a wind turbine generator, and constructing a double-index fitting model of a fan rotating speed recovery process and a corresponding energy loss quantification model based on a rotor motion equation; deriving an analytic relationship between the technical index and the energy loss index of the wind power frequency modulation parameter pair; determining the internal weight of the technical index and the weight between the technical index and the energy loss index by adopting a combined weight method, and constructing a comprehensive evaluation index comprising the technical index and the energy loss index; establishing a dual-objective optimization model taking minimization of a technical index and minimization of an energy loss index as a core, and outputting a group of Pareto leading edge optimal solution sets; and according to the calculated relative closeness of each candidate scheme, selecting a solution with the maximum relative closeness as a control parameter for setting the frequency modulation performance and energy loss of the wind turbine generator.

The invention provides a refrigerating system evaporator direct expansion liquid supply separation type liquid separation device, and relates to the field of refrigerant liquid separation devices.The refrigerating system evaporator direct expansion liquid supply separation type liquid separation device comprises a gas-liquid separation tank, a mixed liquid inlet main pipe, a gas-liquid remixing device and a hydrocyclone, a sealing top cover is welded to the top of the gas-liquid separation tank, the mixed liquid inlet main pipe is connected to the sealing top cover, and the gas-liquid remixing device is connected to the hydrocyclone; the mixed liquid inlet main pipe penetrates through the sealing top cover; a plurality of liquid outlets are formed in the peripheral surface of the lower end of the mixed liquid inlet main pipe; and a gas-liquid remixing device is mounted at the bottom of the gas-liquid separation tank. By arranging the gas-liquid separation tank, the mixed liquid inlet main pipe and the gas-liquid remixing device, after gas-liquid two-phase mixed fluid enters the gas-liquid separation tank, gas and liquid in the tank are completely separated, then the gas and the liquid in all the outlet pipes are evenly led out and mixed through the gas-liquid remixing device, and therefore the gas-liquid separation effect is improved. The gas-liquid two-phase refrigerant is stably, effectively and equivalently distributed to all the evaporation heat exchange pipelines, so that all the evaporation heat exchange pipelines fully play a role in refrigeration.

The present application relates to the technical field of forest planting, and more particularly to a desert tree planting machine, which comprises a frame, a hole digging device, a seedling storage device, a seedling device, a seedling standing device, a soil filling device and a watering device. The desert tree planting machine can replace manual tree planting, reduce labor and economic losses caused by manual tree planting, and reduce the adverse effects of land desertification. The desert tree planting machine can realize the processes of hole digging, seedling separation, seedling standing, soil filling and watering, greatly reduce the planting cost, improve the planting efficiency, and to a certain extent, improve the survival rate of seedlings.

A hydraulic drive system (24), in particular for a self-propelled construction machine, comprises at least one hydraulic pump (28) which can be driven by a drive assembly (26) to deliver hydraulic fluid, a hydraulic circuit (30) which receives the hydraulic fluid delivered by the at least one hydraulic pump (28) and conducts the hydraulic fluid back to the at least one hydraulic pump, at least one hydraulic motor (32, 34) which is supplied via the hydraulic circuit (30) with the hydraulic fluid delivered by the at least one hydraulic pump (28), a discharge line arrangement (52) for discharging hydraulic fluid from the hydraulic circuit (30) to a hydraulic fluid reservoir (42), and at least one flushing line (64) which is supplied by the hydraulic circuit (30) for flushing at least one hydraulic component of the hydraulic drive system (40) with hydraulic fluid, wherein the at least one flushing line (64) branches off from the discharge line arrangement (52) and / or constitutes a line region of the discharge line arrangement (52).

This invention discloses a method for judging and correcting the flattening phenomenon of wind turbine blade root load, comprising the following steps: acquiring real-time blade load data under grid-connected operation of the wind turbine; judging whether the blade root oscillation load data in the real-time blade load data has a flattening phenomenon; judging whether it needs to be merged into a single flattening segment based on the interval between each flattening segment, and calculating the cumulative duration of the flattening segment; judging whether the cumulative duration is not greater than a preset cumulative duration threshold; extracting features of the normal segment located in the previous cycle of each flattening segment from the blade root oscillation load data; generating replacement loads for the flattening segment based on the features and performing segment-by-sine replacement on each flattening segment, while smoothly connecting the start and end points of the flattening segment to complete the correction of the flattening phenomenon of wind turbine blade root load. This invention corrects flattening through feature extraction and sinusoidal load generation, meeting the load testing accuracy requirements, avoiding long-term wind turbine shutdowns, and reducing power generation losses.

The application discloses a power system transient stability real-time emergency control method, system, device and medium, obtains real-time measurement data of a generator terminal PMU after a power system fault; determines whether the power system is transiently unstable based on a system maximum power angle difference change curve, and if so, continues to execute; performs double-machine equivalence on the power system, equivalent to a single-machine infinite system, and then obtains an equivalent power angle characteristic curve of the power system; fits the equivalent power angle characteristic curve of the power system from fault removal to the determination of the transient instability of the power system based on the least square method, then estimates the equivalent power angle characteristic curve after the determination of the transient instability of the power system, and obtains a generator tripping control quantity; calculates the electrical coupling connection degree of a bus node connected with important loads and each generator node of the power system, and obtains an emergency generator tripping control measure. The application makes the transient instability system restore stability while ensuring the power supply capacity of the power system to important loads as much as possible.

The motor for the fan includes a housing (3), characterized in that the surface of the housing is smooth, a sleeve (6) is provided on the outer periphery of the housing, the inner diameter of the sleeve is larger than the diameter of the fan impeller, multiple stiffeners (11) are symmetrically provided between the sleeve and the housing, the width of the stiffener is smaller than the length of the stiffener, the width direction of the stiffener is parallel to the axis of the motor, the sleeve, the housing and the stiffeners are a whole, a stator winding lead hole (9) is provided at one end of the housing, and a stop (12) is provided on the inner circle at both ends of the sleeve. The beneficial effects are that the surface of the motor housing is smooth, which does not hinder the airflow of the fan; the sleeve can serve as the housing of the fan, the motor housing, stiffeners and sleeve are cast into a whole, the connection strength between them is high, and the connection between them will not be loosened due to vibration, which can ensure that the housing and the sleeve are coaxial; the inner circle at both ends of the sleeve is provided with a stop, and the fan's air inlet pipe (collecting pipe) and air outlet pipe can be easily connected to the stop.

This utility model discloses a bearing assembly structure for a rotor motor, including a housing, a motor spindle, and a rotor. The housing houses a stator assembly and a rotor assembly arranged opposite to each other. The motor spindle is located inside the housing, and its output end is coaxially connected to the rotor to drive its rotation. A support base is located at the head of the housing, and a cover is mounted on the support base. The shaft of a DC brushless motor is connected to the air-jet spinning rotor assembly, transmitting the rotational power generated by the motor to the rotor. The motor speed can be precisely controlled by changing the input voltage or current to meet the needs of different spinning processes, improving production efficiency and yarn quality. It features high efficiency, fast response, and high stability. The bearing design provides a larger support area, significantly reducing vibration and offset of the motor spindle during high-speed rotation, thereby improving the concentricity and operational stability of the rotor.

The embodiment of the present application provides a kind of line voltage regulating equipment.The equipment includes: control device, and multiple voltage regulating devices and multiple monitoring devices arranged in different line sections of distribution line;Specifically, each monitoring device is used to collect the real-time line data of the line section, and is sent to control device;Control device includes data analysis module, adjustment instruction generation module and first communication module;Each voltage regulating device is used to adjust the line parameter of the line section according to the received adjustment instruction, to realize the voltage optimization of line section.Through this line voltage regulating equipment, the voltage stability of each section of line can be realized, while local adjustment and network optimization are considered, and the flexibility and reliability of distribution network are improved.

This utility model relates to the field of mesh belt dryer technology, specifically to a rolling support structure for a mesh belt dryer, comprising a guide rail, a rolling assembly, and a bracket. The rolling assembly includes a slot on a mounting plate, a mounting bolt inserted into the slot, a rolling bearing mounted on the mounting bolt and located between two symmetrically arranged mounting plates, elastic washers on both sides of the rolling bearing, and a locking nut at the end of the mounting bolt. The guide rail and the rolling bearing on it support the mesh belt, reducing friction, preventing excessive wear, and reducing power consumption. By adjusting the height of the assembly and bracket, the distance between the rolling bearing and the mesh belt can be adjusted more precisely, reducing the probability of over-support or failure to contact the mesh belt.

The present disclosure relates to the technical field of centrifugal pump matching tool, and provides a leakage-proof sealing device for centrifugal pump installation, which comprises an outer sleeve, an inner sleeve arranged in the inner part of the outer sleeve, a sealing assembly arranged in the inner part of the outer sleeve, and a lateral connecting assembly arranged on the lateral wall of the outer sleeve and the inner sleeve; a rotating wheel is sleeved on the connecting shaft, and the rotating wheel is in close contact with the inner part of the inner cavity. Through the above technical scheme, the problem that the sealing material is easily worn out due to the continuous friction between the pump shaft and the shaft seal material during high-speed rotation in the prior art, thereby reducing the sealing performance and causing the liquid to leak from the gap between the shaft and the pump shell is solved. The traditional packing seal often uses materials such as graphite wire and hemp rope. When these materials are used to face the high-speed rotating pump shaft, the wear rate is extremely fast, not only frequent maintenance and replacement are required, but also the liquid leakage is difficult to effectively prevent, and there is also the technical problem of environmental pollution.

This invention discloses a modeling method for grid-type multi-converter based on sub-microsecond simulation, belonging to the field of converter modeling and simulation technology. The method involves discretizing the switching elements to construct a generalized constant admittance switching model based on the LC equivalent circuit. Then, by discretizing the system state matrix, an extended modeling from a single converter to a multi-converter system is achieved. Furthermore, by combining the inertia characteristics of a virtual synchronous generator, a complete grid-type multi-converter model including control elements is established. Finally, a simulation model of the grid-type multi-converter system is built in PSCAD / EMTDC, verifying the correctness and effectiveness of the method. This invention demonstrates good applicability and stability in integrating the generalized constant admittance switching model with the inertia characteristics of a virtual synchronous generator at a sub-microsecond simulation step size. It significantly improves the simulation accuracy and efficiency while achieving rapid convergence of transient processes in the grid-type multi-converter and active support for grid voltage and frequency.

The utility model discloses a rectification voltage stabilizing circuit based on 555 timer and reference voltage chip relates to power supply circuit technical field, the circuit in the utility model, provide stable reference voltage through reference voltage chip, according to the duty cycle of the output pulse of comparison result adjustment, can realize the high precision voltage stabilizing output, satisfy the power supply demand of high precision electronic equipment, utilize common 555 timer and reference voltage chip, compared with the dedicated voltage stabilizing chip, the cost is reduced obviously, has higher cost performance, is suitable for large -scale production and application, through the output signal in control 555 timer module, can conveniently adjust output voltage, to adapt to the demand of different load and application scene to voltage, the PWM circuit of 555 timer composition can realize higher power conversion efficiency, reduce power loss, improve the overall performance of circuit.

This invention provides a micro-power driven indexing and clamping chuck, including a chuck housing. A dual-power output assembly is connected inside the chuck housing. The power input end of the dual-power output assembly is connected to a micro-power drive servo motor, and the output end of the dual-power output assembly is connected to a workpiece clamping component and a workpiece rotation component. The workpiece clamping component includes a first clamping transmission component and a second clamping transmission component. Both the first and second clamping transmission components are connected to auxiliary clamping components and workpiece clamping components. A self-controlled clutch component enables precise step-by-step power transmission, following a machining logic of clamping before rotation. This step-by-step transmission logic is clear, ensuring the stability and accuracy of the machining process. It improves power utilization efficiency, ensures machining accuracy, achieves higher indexing accuracy and clamping stability, and is suitable for the installation requirements of small, high-precision CNC machining equipment.

The utility model discloses a scroll compressor exhaust cover, including the exhaust cover main part, the upper side of exhaust cover main part is provided with the exhaust hole, the upper side of exhaust cover main part is provided with the bolt hole away from the exhaust hole, the inside upper side of exhaust cover main part is close to the exhaust hole and is provided with the exhaust chamber, the inside of exhaust cover main part is provided with the acceleration chamber between exhaust chamber and high pressure chamber. The utility model is provided with a plurality of baffle and forms a plurality of separation chamber, through ceaseless change oil gas mixture's direction of travel, makes oil gas mixture through the impact corresponding baffle, through making oil droplet adhere wall surface separation oil gas, lighter gas enters exhaust chamber, and discharges from the exhaust port, and the exhaust space is big can reduce exhaust pulse, and the oil droplet separated out is along the wall surface backflow, finally converges to high pressure chamber below through corresponding oil return hole, and backflow to compressor main bearing part lubrication main bearing through the oil return channel on the static disc, and oil separation efficiency is higher and stable.

This invention discloses a solar collector panel for buildings, relating to the field of solar collector panel technology. It includes a movable block, a long plate, a flexible plate, a chemical tube, an L-shaped block, a protrusion, and an irregular rod. The movable block is threaded onto the circumferential surface of a reciprocating screw. The long plate is fixedly installed at the bottom of the movable block. The flexible plate is rotatably installed at the bottom of the long plate. The chemical tube is fixedly installed on the side of the long plate away from the motor. The L-shaped block is fixedly installed on the front of the long plate, and the end of the L-shaped block away from the motor can elastically extend and retract. The protrusion slides through the front of the L-shaped block near the left side. The irregular rod is fixedly installed on the side of the protrusion away from the motor. This design ensures maximum sunlight reception, maintains high power generation efficiency, protects the physical structure of the solar panel, extends its service life, significantly reduces the frequency of manual cleaning, and lowers maintenance costs and safety risks.

The application relates to a drive axle, a differential and a vehicle, the drive axle comprising: a driving part; and a differential arranged along a second axis; wherein the differential comprises: a driven part; an output end; a clutch part capable of moving along the direction of the second axis between a locking position and an unlocking position, when the clutch part is located at the locking position, the clutch part is connected with the driven part, the first rotation speed and the second rotation speed are equal; when the clutch part is located at the unlocking position, the clutch part is separated from the driven part. The drive axle and the vehicle of the application comprise the differential arranged along the direction of the second axis, the differential has a locking function, so that the drive axle can adjust whether to enable the differential function according to needs, the clutch part moves along the direction of the second axis, the overall structure reduces power loss caused by other directional components, improves transmission efficiency, reduces occupied space, and makes the internal structure of the differential more compact.

This utility model discloses a drilling sleeve device for mining, including a header, a drill barrel, a spindle, a bracket, a feed header, a drive mechanism, and a hydraulic cylinder. The drill barrel is movably installed inside the header. The front end of the spindle is coaxially connected to the drill barrel via a center drill. The bracket is rotatably connected to the spindle via bearings, and both ends of the bracket are slidably connected to the header. The feed header is fixedly connected to the header. The drive mechanism includes a motor and a slide block. The motor is fixed to the slide block, and the motor output shaft is connected to the spindle. The slide block is slidably connected to the feed header. The cylinder body of the hydraulic cylinder is fixed inside the header, and the piston rod is connected to the motor of the drive mechanism. The base is fixedly connected to the feed header. This utility model adopts a double-protrusion-slide groove fit between the bracket and the slide block to form a two-stage axial guide. It synchronously constrains radial displacement from the middle of the spindle and the drive end, significantly suppressing drilling vibration, reducing wear on the drill barrel and drill rod, and improving drilling accuracy and equipment life.

This invention discloses a method for in-situ laser-arc composite cladding of boiler heating surfaces, relating to the field of laser beam processing technology. The method includes: removing the corrosion layer and oxide film from the area to be repaired using dry ice blasting and laser; maintaining water cooling on the back side of the area to be repaired; pausing after each cladding section to allow the interlayer temperature to drop to 200℃-250℃; sequentially cladding the underlayer, transition layer, and wear-resistant layer; after each cladding layer is completed, the surface is treated with laser shock peening; when an abnormal enhancement of the Fe I spectral line at 435.2 nm is observed, it is determined to be "excessive dilution"; when a high-frequency burst signal of 80kHz-120kHz appears in the acoustic emission signal, it is determined to be "microcrack formation". This invention enables rapid repair of large-area heating surfaces with high bonding strength, low heat input, and no cracks, under in-situ boiler conditions without disassembly, overall preheating, and with a cooling medium on the back side.

This invention discloses a current protection method and system for distributed power generation distribution networks, relating to the field of distribution network technology. The invention first collects parameters of the distribution network's common coupling point in real time to predict grid-connected or islanded operation modes. It then distinguishes between inverter-type and synchronous generator-type power supplies based on harmonic content and current response speed, accurately calculating the main protection settings for each power supply. Next, it employs dual-start components for current surges and voltage dips to detect faults, comprehensively determining whether the fault is within or outside the designated area. Subsequently, it determines the braking level based on fault characteristics, dynamically adjusts power supply output limits, and forms a three-dimensional protection system with dual backup protection. Finally, it sets differentiated reclosing delay times based on fault levels and adopts corresponding closing sequences according to the operating mode. This achieves full-scenario adaptability of the protection strategy, significantly improves the accuracy of fault determination, ensures grid stability through the synergy of protection and braking, optimizes recovery strategies to improve power supply reliability, and perfectly adapts to the safe and efficient operation requirements of diverse distribution networks.

The invention relates to a dry composition comprising at least one active material, at least one binder, optionally at least one electrically conductive agent, characterized in that the at least one binder comprises a fluoropolymer and a polyamide thermoplastic polymer or a polyether block amide or a mixture thereof.

The utility model relates to a kind of pull rod conveying mechanism, including guide bearing set, support plate assembly, pull pencil assembly and length measurement component.Length measurement component is located in the front end of pull pencil assembly, and the length of pull rod is measured by first pressing upper wheel and measuring lower wheel;Pull pencil assembly realizes accurate pressing and conveying to pull rod by second pressing upper wheel and conveying lower wheel, and its power is provided by motor through gear transmission structure, to ensure the orderly synchronous rotation of second pressing upper wheel and conveying lower wheel, and the utility model realizes liftable activity under the action of expansion spring, automatically adjusts pressing force to adapt to pull rod of different diameters, and through the cooperative work of each component, the efficient, stable conveying and accurate processing of pull rod are realized, with significant practical value and broad application prospect.

The utility model discloses a kind of electrically-driven centrifugal oil-gas separators, hollow shaft passes through motor, and the end of hollow shaft is fixed with motor;First cavity and oil inlet hole that pass through with first cavity are equipped on oil inlet main body, and the other end of hollow shaft is located in first cavity;First through-hole is equipped on oil-gas separation seat along with axial, and oil discharge hole that pass through with first through-hole is equipped on the circumference of oil-gas separation seat;Oil-throwing disc is fixed with hollow shaft, and the circumference of hollow shaft is equipped with first oil-throwing hole, and the circumference of oil-throwing disc has second oil-throwing hole for cooperating with oil discharge hole, and first oil-throwing hole and second oil-throwing hole pass through;Connecting seat is sleeved on hollow shaft, and motor is fixed with one end of connecting seat, and the other end of connecting seat is fixed with the other end of oil-gas separation seat.The utility model has the advantages of high separation efficiency and reducing power loss.

This utility model discloses a top-mounted, adjustable-speed rotary pencil sharpener, including a support cover, a pencil holder on the support cover, a support gear below the support cover, and a pair of support shafts inside the support cover. A start switch and a PCB circuit board are connected to the pencil holder on one side. The PCB circuit board is connected to the motor circuit, and the motor is connected to the support gear via a gear set. A blade holder is located below the support gear, and an adjustment component for adjusting the pencil tip thickness is located below the blade holder. The pencil tip thickness is controlled by the up-and-down movement of the adjustment rod via a seesaw structure. When the pencil tip reaches the top of the adjustment rod, the PCB circuit board controls the motor to reverse and retract the pencil. The closer distance between the motor and the blade assembly results in less motor power loss, a more compact connection structure with less mechanical friction noise, more stable motor speed, and a more stable center of gravity. The bottom shavings box design allows for a larger shavings capacity and easier cleaning.

The application discloses a kind of high-efficiency power split driving system, including driving motor reduction gear set, planetary row, speed regulating motor reduction gear set, planet carrier locking execution mechanism, speed regulating motor locking execution mechanism, power output shaft;Planetary row connects engine and power output shaft, can respectively transmit the power of engine to speed regulating motor and gearbox;Driving motor reduction gear set connects driving motor, for pure electric drive power and kinetic energy recovery power transmission path, realize engine power and driving motor power parallel coupling;Speed regulating motor reduction gear set connects speed regulating motor, provides power transmission path for speed regulating motor, adjusts driving motor rotating speed;Planet carrier locking execution mechanism can lock planet carrier;Speed regulating motor locking execution mechanism can lock speed regulating motor.The application can realize engine power efficient split and hybrid power drive.

This invention discloses a high-power-density planetary traction drive. A loading wedge space and a balancing space are formed on both sides of the radial distance circumference between the planetary rollers and the outer ring. A loading roller is located within the wedge-shaped loading space and rolls in contact with the planetary rollers and the outer ring. A balancing idler wheel is provided in the balancing space. The planetary rollers, balancing idler wheel, and loading rollers are all floating, with the loading rollers abutting against the planetary carrier. The torque or counter-torque transmitted by this invention can directly act on the loading rollers, achieving adaptive loading and making the loading process faster and more flexible. Optimization of the load in the contact area also improves the service life of the traction drive. The superposition of contact forces generates a larger clamping force, thereby ensuring sufficient tangential force in each contact area to transmit power. Furthermore, the planetary traction drive provided by this invention can achieve high-load transmission under the load-sharing effect of multiple rollers. The zero-spin design based on cylindrical rollers also minimizes power loss, resulting in high power density and improved transmission accuracy and efficiency.

This invention discloses a voltage detection circuit for adaptive dead-time control of motor drives. The system includes AND gates AND1 and AND2, inverters INV1, INV2, and INV3, a high-side driver, a low-side driver, a voltage detection circuit, a high-side power transistor N1, and a low-side power transistor N2. The voltage detection circuit includes a high-voltage transistor NM_H, bias currents I1, I2, and I3, a power supply voltage VDD, constant-voltage transistors PM1 and PM2, constant-voltage transistor NM1, and an inverter INV4. This voltage detection circuit detects the gate voltage of the high-side power transistor. The low-side power transistor only turns on when the gate voltage drops very low, preventing shoot-through between the high and low-side power transistors. This invention can detect high-voltage signals. Its detection principle and circuit implementation are simple, using only one high-voltage device, with a small area, low power consumption, and a wide applicable voltage range. Applying this circuit enables adaptive dead-time control.

The embodiment of the invention discloses a new energy grid-connected harmonic suppression regulation and control method and device, electronic equipment and a medium. A specific embodiment of the method comprises the following steps: performing variable window Fourier transform on a power instantaneous value sequence set, and then performing impedance compensation to obtain a compensated power harmonic spectrum diagram set; performing critical point identification on the new energy grid-connected power region to obtain a harmonic resonance critical point set; performing early warning grade division on the harmonic resonance critical point set to obtain an early warning grade critical point set; performing harmonic time sequence prediction on the compensated power harmonic spectrogram and the inverter power information to obtain a harmonic prediction amplitude oscillogram; and performing harmonic suppression control on the early warning grade critical point to obtain grid-connected harmonic regulation and control information, and performing equipment regulation and control processing on the power equipment. According to the embodiment, the early warning accuracy of the harmonic resonance risk and the efficiency of suppressing the harmonic resonance can be improved, the equipment delay is reduced, the safety of the new energy grid-connected equipment is improved, and the power loss is reduced.