157 results about "Power simulation" patented technology

The invention discloses a hybrid micro-grid load control method, system and device and a storage medium, and the method comprises the steps: carrying out the feature extraction of historical operation data in a hybrid micro-grid, and obtaining a power factor distribution set of multiple types of loads; performing time sequence analysis on the power factor distribution set, and performing fusion processing on an increment information sequence obtained based on an analysis result to obtain load dynamic power characteristic description data; performing parameter correction on the load power simulation model based on the load dynamic power characteristic description data to obtain a first digital twinborn model; performing secondary correction on the first digital twinborn model based on the load power characteristic subset to obtain a second digital twinborn model; and inputting the real-time operation data into the second digital twinborn model to obtain second reactive power demand data, and executing a load control instruction of the hybrid microgrid generated by the second reactive power demand data. According to the method provided by the invention, the operation stability of the hybrid microgrid is improved.

The invention relates to the technical field of freeze-thaw mud flow simulation, in particular to a freeze-thaw mud flow chain disaster power simulation method and system. The method comprises the following steps: obtaining regional topographic measurement data and carrying out point cloud conversion and three-dimensional modeling, generating a digital topographic model, collecting regional meteorological data and extracting features, carrying out multi-source fusion with the digital topographic model, forming a data fusion model, and based on the model, identifying freeze-thaw critical conditions and positioning freeze-thaw susceptible regions. The method comprises the following steps: carrying out geological structure calculation and stability analysis on a susceptible area, generating mud flow risk data, carrying out dynamic change simulation by utilizing the risk data, obtaining a simulated mud flow node and generating a disaster formation track, carrying out disaster risk assessment on the disaster formation track, and carrying out emergency early warning processing based on an assessment result to generate corresponding early warning data. According to the invention, a more accurate freeze-thaw mud flow chain type disaster-forming power simulation method is realized.

The invention relates to the field of power simulation optimization, in particular to a new energy charging simulation optimization method and device based on a charging and discharging test platform. The method comprises the following steps of performing new energy charging pile charging simulation based on a charging and discharging test platform, performing adjustable power time period analysis, and generating a plurality of adjustable power windows; performing timing sequence energy flow trend change mining and dynamic power distribution fitting according to the plurality of adjustable power windows, and constructing a dynamic power path distribution map; performing minimum power drift point detection according to the dynamic power path distribution map, and performing power fluctuation compensation inversion to obtain power fluctuation compensation configuration parameters; and performing local dynamic power regulation according to the power fluctuation compensation configuration parameters, and constructing a local window dynamic power regulation strategy. Through dynamic charging simulation, the power stability of new energy charging is improved, and the power response balance is optimized.

The invention relates to the technical field of electric power simulation practical training safety protection, and discloses a quadruple safety protection system and method for electric power simulation practical training, and the system comprises a central control unit, and a circuit breaker unit, a safety power supply unit, a virtual load power supply unit and an electric leakage monitoring unit which are in communication connection with the central control unit. The circuit breaker unit, the safety power supply unit, the virtual load power supply unit and the electric leakage monitoring unit are connected in sequence; the circuit breaker unit, the safety power supply unit, the virtual load power supply unit and the electric leakage monitoring unit respectively carry out fault judgment and send a fault judgment result to the central control unit; and the central control unit generates a corresponding cooperative control instruction according to the fault judgment result so as to control other units to perform cooperative protection. Through a quadruple protection system, safe operation of electric power simulation practical training is guaranteed, the risks of equipment damage and personnel safety accidents are effectively reduced, and the safety, reliability and practicability of electric power simulation practical training are improved.

The invention discloses an intelligent planning method for a power distribution network, and the method comprises the steps: dividing the power distribution network into a plurality of functional blocks, collecting and classifying the power data of power consumers, generating a change curve based on the data, predicting the power demands, and obtaining a prediction curve of the power data size. Performing digital twinborn modeling and computing power simulation on each functional block, and recording simulation computing power indexes; establishing a fitness function according to the power data prediction curve and the calculation power index, and evaluating the twin communication matching degree of the function block and the power distribution network; according to the fitness index, evaluating the priority of the time sequence nodes and layering the time sequence nodes, finally determining the time sequence nodes needing to be adjusted, and dynamically planning the power distribution network. According to the method, regional power utilization characteristics can be accurately mastered, the system state and the computing power demand are evaluated in advance, the communication matching degree is accurately evaluated, potential problems are found in time, resource allocation is optimized, the operation stability and efficiency of the power distribution network are improved, and reasonable utilization and efficient management of resources are achieved.

The invention discloses a power supply integrity simulation optimization method and device, equipment and a medium, and relates to the technical field of computer simulation, and the method comprises the steps: importing a to-be-simulated PCB design file into a simulation software tool; setting simulation parameters and constraint conditions in the simulation software tool, and operating the simulation software tool to perform power supply integrity simulation analysis and obtain a current simulation result; if the result is that the simulation test is not passed, inputting the current simulation result into a pre-trained power supply simulation dialogue large model to obtain a current optimization suggestion output by the model; the large power supply simulation dialogue model is obtained based on training of a training data set, and the training data set comprises historical simulation results and historical optimization adjustment measures; and adjusting the PCB design file based on the current optimization suggestion, importing the adjusted PCB design file into a simulation software tool for simulation analysis, and adding a current simulation result and a corresponding current optimization adjustment measure into a training data set after the simulation test passes.

The invention discloses a whole vehicle power hardware-in-the-loop simulation test system and method under a P2.5 + P4 hybrid architecture. The whole vehicle power hardware-in-the-loop simulation test system comprises a controller, a test cabinet and an upper computer system, the hybrid power gearbox control system is electrically connected with the high-voltage control system; the test cabinet is electrically connected with the hybrid power gearbox control system, the high-voltage control system and the upper computer system; the upper computer system comprises a management module, a signal interface module, a controller interface module and a virtual simulation vehicle module, the management module is connected with the test cabinet and the signal interface module, and the signal interface module is used for realizing signal interaction between the controller interface module and the management module; the controller interface module is connected with the signal interface module, the Soft ECU module and the power simulation module. Standardized development of the power simulation test system is realized, the modular design supports rapid adaptation of different vehicle type platforms and power architectures, and repeated development is reduced.

The invention relates to the technical field of electric power simulation, and discloses an electric power system data parallel simulation processing method based on distributed modeling. The method comprises the following steps: acquiring voltage, frequency and power parameters of a new energy inverter and an energy storage converter, and generating a state switching feature vector through a fuzzy C-means algorithm; determining and calculating a load abrupt change subsystem according to the load index overrun, and calculating the electrical coupling strength with an adjacent subsystem; allocating reserved computing resources for the mutation subsystem through a particle swarm optimization algorithm to form a dynamic resource allocation table; and adjusting the data synchronization period of the mutation subsystem to an extended time window, and continuing parallel simulation after the adjacent subsystems wait for boundary data. According to the method, the problems that in an existing power system data parallel simulation processing method based on distributed modeling, the calculation load abrupt change and the data synchronization failure caused by strong nonlinear component state switching cannot be processed are solved.

The invention relates to the technical field of energy storage power stations, in particular to a construction method and device of a pumped storage unit test system and the test system.The method comprises the steps that pump turbine parameters are obtained, and a pump turbine simulation model is constructed according to the pump turbine parameters; in response to the first modeling instruction, constructing a generator motor simulation model, an excitation power simulation model, a main transformer simulation model and an AC power grid simulation model; in response to the second modeling instruction, establishing connection between the pump turbine simulation model and the generator motor simulation model, establishing connection between the generator motor simulation model and the excitation power simulation model and the main transformer simulation model, and establishing connection between the excitation power simulation model and the main transformer simulation model; and establishing connection between the main transformer simulation model and the alternating-current power grid simulation model to obtain the pumped storage unit test system, thereby solving the problem that an existing test mode is difficult to carry out overall performance test on a power system connected with the pumped storage unit.

The invention belongs to the technical field of intelligent monitoring, and particularly discloses an air-ground data-driven complex steel structure construction mechanics twinborn model automatic establishment and performance prediction method. Comprising the following steps: establishing a target optimization function which takes the surface coverage rate of a structure as a core index to carry out optimization design of the number of observation stations and a space layout path; reverse reconstruction of the three-dimensional geometric digital twin model of the structure is completed; self-adaptive updating of the designed finite element model is achieved through coordinate registration and parameter correction, and a mechanical twinborn model reflecting the real working condition is generated; and carrying out construction static force and operation period power simulation based on the mechanical twinborn model. The geometry-mechanics integrated modeling process provided by the invention can effectively reflect the real state of the structure at the construction stage, and improves the construction quality control and safety evaluation capability; meanwhile, the method has high automation and universality, and is suitable for digital modeling and monitoring requirements of multi-type and large-scale complex steel structures.

The invention relates to the technical field of power transmission line icing disaster monitoring, in particular to a power transmission line deicing jump tripping risk early warning method, system and device and a storage medium. The visual monitoring device captures the motion trail of the ground wire in real time and calculates the spatial distance, meanwhile, a three-dimensional power simulation model of the power transmission line is constructed to simulate and calculate the jumping process of the wire after deicing, and the distance data obtained through the two means are fused to form the minimum insulation distance; on the basis of wire tension changes and ice coating thickness abrupt changes collected by the ice coating monitoring terminal and wire displacement characteristics captured by the visual monitoring equipment, the occurrence of a deicing jump event is judged through multi-source data cross validation; and when it is judged that the ice-shedding jump event occurs, the discharge voltage is calculated according to the minimum insulation distance in combination with the standard discharge characteristic curve, the discharge voltage is compared with the line operation voltage to obtain a voltage margin, tripping risk grading evaluation is performed based on the voltage margin, and corresponding early warning information is output. The problem that a dynamic process cannot be captured by traditional static monitoring is solved.

The invention discloses a floating transportation towing physical model test system for yaw and deviation correction simulation, which comprises a tug power simulation system, the tug power simulation system comprises a floating transportation towing platform and a jet flow loading facility, and the main body structure of the floating transportation towing platform is composed of a fixed guide rail, a movable trailer and a power supply guide rail. The movable trailer is erected on the fixed guide rail and is driven by a motor, height-adjustable horizontal slideways are erected on cross beams on the front side and the rear side of the movable trailer, hooks with pulleys are arranged on the horizontal slideways, the hooks are connected with the floating transportation component model through traction cables, and the jet flow loading facility is carried on the movable trailer. A mechanical arm, a high-pressure plunger pump and a jet nozzle are arranged, and the jet nozzle and a water supply pipeline are connected to the tail end of the mechanical arm. The invention further discloses a test method adopting the test system. The device has the function of flexibly simulating the transverse loading of the tug, and can realize the complete similar simulation of the component response in the floating yaw process and the deviation correction process.

The invention relates to the technical field of electric power simulation, and discloses a hardware-in-the-loop simulation-oriented new energy equipment model verification method and system, and the method comprises the steps: constructing a new energy equipment basic model based on a physical equation, carrying out the compensation of a dynamic working condition error through combining with an LSTM neural network, and generating a hybrid parameterized model; fitting voltage and current data through a particle swarm optimization algorithm, and dynamically adjusting impedance parameters to complete model calibration; a time domain step response test, frequency domain characteristic analysis and a voltage sag fault experiment are executed on a hardware-in-loop platform, and the performance of the model is verified in a multi-dimensional mode; and generating a standardized verification report containing a steady-state error and a simulation step length index based on the deviation between the dynamic response curve and the measured data. According to the method, a mechanism model and a data driving technology are fused, the problems that dynamic characteristic adaptation is insufficient and parameter calibration depends on experience in traditional verification are solved, and the simulation precision and verification efficiency of the model under complex working conditions are improved.

The invention discloses a real-time simulation method and device for a power transmission system, electronic equipment and a storage medium, which are used for solving the problem that the traditional electromagnetic transient simulation cannot completely meet the actual simulation analysis requirement of a power grid and cannot achieve a large-scale refined real-time simulation effect. According to the method, an on-chip system is adopted as a software and hardware collaborative acceleration platform of a power transmission system, and the software and hardware collaborative acceleration platform comprises a scalar engine and an adaptive engine; acquiring a main circuit and a primary sub-module circuit of the power transmission system; performing circuit segmentation on the first-stage sub-module circuit to obtain a plurality of second-stage sub-module circuits, and dividing the plurality of second-stage sub-module circuits into a plurality of first sub-module circuits and a plurality of second sub-module circuits; performing parallel simulation calculation on the simulation tasks of the second sub-module circuits through a scalar engine, and performing parallel simulation calculation on the simulation tasks of the main circuit and the first sub-module circuits through an adaptive engine; and outputting a power simulation result of the power transmission system.

The invention relates to the technical field of hydraulic engineering digital twinning, and discloses an avionics hub dynamic flood digital twinning deduction method and system fusing a hydrodynamic model, and the method comprises the steps: collecting multi-source observation data to form a space-time coding original data set, constructing a hydrodynamic boundary parameter set, and carrying out the digital twinning deduction of the dynamic flood of an avionics hub; constructing a two-dimensional unsteady state hydrodynamic calculation model based on the parameter set, assimilating newest monitoring data online to update model parameters, mapping a hydrodynamic simulation state field to a three-dimensional terrain grid to generate a three-dimensional twin rendering scene, and calculating a submerging index and a scheduling benefit index based on the scene; and a scheduling optimization scheme set is generated and an execution control instruction is issued, so that dynamic deduction, multi-target optimization scheduling and closed-loop control of the flood process of the avionics hub are realized, and the accuracy and timeliness of flood control decision are improved.

The invention relates to the technical field of ocean science education, in particular to an ocean current motion science popularization simulation system. Comprising a power simulation unit, a water flow control unit, a visualization unit and an interaction control unit, wherein the power simulation unit is used for comprehensively simulating various power sources and interaction of ocean current motion through a multi-power coupling simulation system and a green energy-saving driving device. By arranging the wind power simulation module, the thermohaline driving module and the earth rotation force simulation module, main driving force influencing ocean current in nature and interaction of the main driving force can be comprehensively simulated. Especially, a dual ground rotation force simulation mechanism based on a rotating platform and algorithm correction is introduced, so that the abstract Coriolis force effect is visually presented, and the teaching authenticity and scientific interpretation strength of the ocean phenomenon are remarkably improved.

The invention discloses a Python enabled FDS-ABAQUS non-uniform temperature field bridging method, which integrates an FDS fire power simulation module, a temperature data preprocessing module and an FDS-ABAQUS non-uniform temperature field mapping module, and realizes the whole-process intelligent processing from the establishment of a fire scene to the temperature assignment of a complex special-shaped structure non-uniform temperature field. The FDS fire power simulation module accurately simulates a fire scene and extracts key temperature data. The temperature data preprocessing module converts the extracted original data into temperature rise curve data which is provided with geometric space position labels and changes along with time, and an accurate data basis is provided for subsequent non-uniform temperature field mapping. The ABAQUS non-uniform temperature field mapping module adjusts an attached temperature area and density through a'boundary instrument 'and a'search device', temperature data is accurately mapped to a model in the ABAQUS in batches, and partition efficient intelligent endowing of a temperature field is achieved.

The invention discloses a system and method for testing the braking condition of a deepwater power source, and relates to the technical field of underwater power source digital testing, and the system comprises a power simulation device which is used for simulating the power source to provide normal working kinetic energy for underwater equipment; the braking simulation device is used for simulating braking kinetic energy provided by a braking source for underwater equipment during energy consumption braking; the testing device is connected with the power simulation device and the braking simulation device, and is used for switching working kinetic energy provided by the power simulation device into braking kinetic energy provided by the braking simulation device during energy consumption braking, collecting electric parameters output by the braking simulation device after the braking kinetic energy supplies energy to underwater equipment, and transmitting the electric parameters to the testing device; and the system performance of the deepwater power source under the braking condition is verified by using the electrical parameters. Data reference is provided for the system design of the actual underwater power source, and the overall system performance of the underwater power source under the braking condition is further accurately verified.

The invention relates to the technical field of elevator dynamics, in particular to a correction system and correction method based on an elevator dynamics model. The method comprises the following steps that elevator design data are obtained, structural analysis is conducted, then elevator structural data and power source data are obtained, and an elevator power simulation model is constructed; power data of the elevator are obtained through analogue simulation, the elevator running load excessive condition is analyzed based on the data, and the abnormal state of a transmission system is estimated; aging trend analysis and performance degradation detection are carried out in combination with abnormal state data of the transmission system, and the demand power increment of the elevator is estimated; according to the performance degradation data and the power demand data, the accumulation effect of power errors is predicted, abnormal fluctuation is analyzed, and the elevator power simulation model is adjusted; according to the method, the elevator power model is optimized, so that the elevator power is more stable.

The invention discloses a parallel simulation processing method and device for multiple agents, terminal equipment and a storage medium, and belongs to the field of power simulation systems.The method comprises the steps that basic parameters of power equipment in a power system, topological structures among the power equipment and interaction relations among the power equipment are obtained; based on the simulation model modeling parameters, a simulation model agent corresponding to each power device is constructed; determining a plurality of target agents in the plurality of simulation model agents according to a simulation scene selected by a user, and determining operation scene data of each target agent based on the simulation scene; inputting each piece of operation scene data into each corresponding target agent to obtain operation simulation data corresponding to each target agent; and receiving operation simulation data generated by all the target agents, and obtaining a simulation report. According to the invention, the simulation efficiency of multi-device simulation of the power system can be improved.

The invention provides a power performance simulation checking method and device for an electric vehicle, and solves the technical problem that the development period and the development capability of the whole vehicle are deficient due to the lack of power performance simulation checking service in the overall design of the existing vehicle. The method comprises the following steps: acquiring an initialization parameter of a subsystem related to a vehicle dynamics model; forming a power simulation model of the power system according to the initialization parameters; calculating the operation power and the operation torque of the driving motor according to the power simulation model, and forming a performance characteristic fitting curve according to the rotating speed of the driving motor; fitting a maximum acceleration curve according to the performance characteristic fitting curve in combination with the initialization parameters; determining the acceleration time for the vehicle to reach the target speed according to the maximum acceleration curve; and determining the maximum speed achieved by the vehicle according to the maximum acceleration curve in combination with the initialization parameters. A simulation check service is provided for the overall design of the vehicle, the development period of the whole vehicle is shortened, and the digital research and development capability of the electric vehicle is effectively improved.

The application relates to the technical field of water power simulation, and particularly discloses a water power simulation method and system for an underwater robot, which comprises the following steps: setting pressure detection points on the surface of a robot model; acquiring real-time pressure containing positions and time based on the pressure detection points, and constructing pressure samples; clustering the pressure samples, querying pose parameters and power parameters of the underwater robot according to the time of the pressure samples for each type of pressure sample, and constructing a regression model of the power parameters to the pose parameters; for the real-time acquired pressure samples, determining target type pressure samples in the clustering results, reading the regression model corresponding to the target type pressure samples, and performing water power simulation on the power parameters; the application determines environmental conditions based on sensing points, reads the regression model to perform water power simulation, and the workload of the control module is only reading data, applying functions and outputting instructions; under the premise of a certain accuracy, the response speed is extremely fast.

The invention relates to an interactive electric power simulation experience device, through scene simulation, students can directly feel teaching in an actual scene, the teaching cost is low, the risk is greatly reduced, the interactive electric power simulation experience device comprises a plurality of scene simulation devices, and the plurality of scene simulation devices are electrically connected with a 3D simulation computer. Each scene simulation device is internally provided with a field simulation model, and each scene simulation device is internally provided with a wearable motion capture device; a real working environment is simulated, so that the scene feeling of training is enhanced, students can obtain the feeling similar to experience of themselves, the students can interact with a three-dimensional scene, various business operations are simulated, workflow training simulation in the virtual working environment is achieved, and the training efficiency is improved. The design inspection of the switching operation simulation training system in the power industry shows that the learning enthusiasm of students in the three-dimensional interaction mode power simulation training is strong, the training effect is remarkable, and the three-dimensional interaction mode power simulation training system is widely applied to the technical field of power simulation experience.

The present invention provides a non-real-time semi-physical simulation synchronization method and device for a power grid information-physical fusion system, including: adding communication simulation events and power simulation events to a global event axis in the order of occurrence, and realizing the simulation synchronization of communication simulation and power simulation on a virtual time axis by transmitting simulation data packets with timestamps and calculating communication transmission delays. The technical solution provided by the present invention mainly solves the problem of inconsistency between power simulation speed and communication simulation speed, and is conducive to realizing joint simulation of non-real-time power simulation software and real-time communication simulation software, and realizes the goal of accessing physical devices for semi-physical simulation in a non-real-time joint simulation system.

The application discloses a layout design method and device for a ventilation pressure regulating facility of an underground water storage cavern, and the method comprises the following steps: determining layout parameters of a tunnel group of the water storage cavern; constructing a water power simulation model of the water storage cavern composed of the tunnel group based on a one-dimensional water flow motion control equation; solving a distribution of a water hydraulic characteristic value along a path under a non-constant flow condition according to the water power simulation model, determining a space-time distribution of a tunnel section in a pressurized state and a non-pressurized state, judging a required ventilation amount according to the space-time distribution, and initially drafting a layout scheme of a cavern ventilation pressure regulation; adjusting the layout parameters, checking and analyzing whether the layout scheme of the ventilation pressure regulating facility is reasonable under the non-constant flow operation condition, and correcting the layout parameters of the water power simulation model established based on the one-dimensional water flow motion control equation according to a calculation result; and repeating the steps of adjusting, checking and correcting until a reasonable layout scheme of the ventilation pressure regulating facility is constructed.

The application discloses a kind of construction methods of power battery system power simulation model, belong to power battery simulation technical field, this method includes: selecting the three kinds of sample monomer battery with lowest, highest and mean value internal resistance;Equivalent circuit model corresponding to unit is constructed based on the characteristic parameters of sample monomer battery;Unit equivalent circuit model is expanded to the battery module equivalent circuit model for characterizing corresponding battery group, and battery module equivalent circuit model is connected in series to form system level equivalent circuit model;The basic parameters, quality and thermal management scheme of monomer battery are combined to construct the thermal management model corresponding to each battery module;System level equivalent circuit model, each thermal management model and pulse charge-discharge condition model are thermoelectric coupling, and power simulation model is obtained.The application is equivalent to modeling by representative sample, and the influence of battery consistency difference on system power is truly reflected, and the problem of large amount of calculation and insufficient precision of traditional modeling is solved.

The invention discloses a user skill portraying method and system for electric power simulation training. According to the method, user operation behaviors in electric power simulation training are comprehensively collected and analyzed, a multi-dimensional user portrait is generated, dynamic scoring is performed according to actual performance of a user, and finally comprehensive evaluation of user operation capability and skill portrait display are realized. According to the scheme of the invention, more efficient, accurate and fair user evaluation is provided.

The invention discloses an electric power simulation adaptability test processing method for a new energy unit, and relates to the technical field of simulation testing, the method comprises the following steps: obtaining PLL bandwidth and controller time constant upper and lower limits, and generating a plurality of parameter combinations; applying each combination to a model, simulating under the disturbance of a preset power system, and collecting dynamic response and numerical stability information for preliminary screening to obtain candidate parameter combinations; the method comprises the following steps: selecting a candidate combination, collecting simulation state information of the candidate combination, calculating a priority selection index, and selecting a group with the maximum index as a final optimization parameter. The optimal PLL bandwidth and controller time constant can be found to balance the dynamic response speed and stability of the electric power simulation model in the electric power system environment, and reasonable global balance is formed between the PLL bandwidth and the controller time constant, so that the applicability of the final electric power simulation model does not deviate to a certain side; and the reliability of behavior prediction of the new energy unit in the power system is improved.

The invention discloses an automobile air bag computer diagnosis system, relates to the field of electrical testing, and realizes full-process fine control of ECU mirror image writing through byte-level differential management, three-model parallel simulation verification and two-stage judgment strategies. A system leads out an ECU original mirror image and generates an SHA256 snapshot, a target mirror image is compared byte by byte to form a differential bitmap DIFFmap, and the differential bitmap DIFFmap is aggregated into a minimum write-in unit according to pages, so that the write-in amount and flash memory wear are reduced, and the write-in success rate is improved. The simulation verification unit parallels a plurality of models and dynamically recognizes a high-risk mirror image through weighted combination and a two-stage judgment strategy, and the write-in verification unit adopts segment-level CRC32 and global SHA256 verification and guarantees write-in atomicity and rollback traceability through two-stage submission, atomic switching and exponential backoff retry. And the cloud and local operation and maintenance module generates a compliance diagnosis report and provides authorization management, so that data security synchronization and edge cloud cooperative processing are realized. According to the scheme, the safety, the reliability and the traceability of ECU updating operation are remarkably improved.

A novel air bridge device with a calibration-free function belongs to the technical field of aircraft power simulation tests. In order to solve the problem that the air bridge is damaged or its relative position with the balance changes during the test, the present invention must re-complete the full-process calibration to obtain the interference force on the balance. The first straight pipe, the second straight pipe, the L-shaped bend pipe and the third straight pipe are connected end to end in sequence, and elastic ventilation devices are provided at the interfaces between the first straight pipe and the second straight pipe, between the second straight pipe and the L-shaped bend pipe, and between the L-shaped bend pipe and the third straight pipe. The upper end of the first straight pipe is connected to the measuring end of the balance, the right end of the third straight pipe is connected to the fixed end of the balance, and the axis of the third straight pipe is perpendicular to the axis of the first straight pipe and the second straight pipe. The novel air bridge device with a calibration-free function of the present invention can quickly obtain the interference force on the balance without performing the overall calibration of the air bridge and the combined calibration with the balance.