88 results about "Power simulation" patented technology

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 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 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 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 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 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.

The invention discloses a power system operation mode generation method and device, terminal equipment and a storage medium, and belongs to the technical field of operation mode generation, and the method comprises the steps: obtaining active power data, a preset network topology model and a reactive load of a first node of a power system in a preset long-scale time period, carrying out direct-current power flow calculation and reactive compensation to obtain operation mode data of a long-scale time period; performing frequency simulation on the operation mode data in the long-scale time period, and generating a power simulation curve; and extracting a minute-level active power value from the power simulation curve, calculating a reactive load of a second node and a second reactive injection amount according to the minute-level active power value, and then generating minute-level power system operation mode data. Through the implementation of the method and the device, the problem that in the prior art, due to the fact that a minute-level short-time-scale operation mode cannot be generated, safety and stability analysis is difficult to carry out on the electric power system more accurately can be solved.

The application discloses a kind of braking operating mode test system and test method of deepwater power source, it is related to underwater power source digital testing field, the system includes power simulation device, for simulating power source to underwater equipment provides normal working working kinetic energy;Brake simulation device, for simulating brake source to underwater equipment provides braking kinetic energy when energy consumption brake;Test device is connected with power simulation device, brake simulation device, test device is used to switch the working kinetic energy provided by power simulation device to the braking kinetic energy provided by brake simulation device when energy consumption brake, and after braking kinetic energy supplies energy to underwater equipment, the electric parameter output by brake simulation device is collected, and the system performance of deepwater power source under braking operating mode is verified using electric parameter.For actual underwater power source system design provides data reference, further realizes the overall system performance of underwater power source under braking operating mode is accurately verified.

The invention relates to an automatic conversion system and method for a multi-platform electric power simulation model, and the method comprises the steps: setting the appearance parameters of each element in an interface through a template construction module, so as to construct an element static template; the parameter setting module is used for initializing default parameters of each element; the element connection module is used for determining an element library corresponding to each line grade and a connection relationship between elements in the element library; and the model drawing module is used for selecting a corresponding element library according to the line grade so as to draw an electric power simulation model according to the element static template, the default parameter of each element and the connection relationship among the elements. The problems of long construction time, low efficiency, high error rate and the like of an electric power simulation model in the prior art are solved.

The invention discloses a photovoltaic module, a method and a device for determining the equivalent resistance of a solder strip of the photovoltaic module and a medium, the solder strip comprises n + 1 solder strip sections which are arranged in sequence, and the method for determining the equivalent resistance of the solder strip comprises the following steps: obtaining the theoretical current of each solder strip section in the solder strip; determining the loss power of the welding strip section according to the theoretical current of the welding strip section; determining the loss power of the solder strip according to the loss power of each solder strip section; and determining the equivalent resistance of the solder strip in the photovoltaic module to be detected according to the loss power of the solder strip and the maximum current in the current of each solder strip section. According to the technical scheme, the resistance of the welding strip in the photovoltaic module can be calculated without assuming that the welding strip is completely attached to the main grid, the requirement for calculating the equivalent resistance of the welding strip in the main-grid-free photovoltaic module can be met, and therefore the precision of power simulation of the main-grid-free module is improved.

Embodiments of the present application provide a kind of vehicle running motor testing device and testing method;Motor testing device includes power simulation component and load simulation component;Power simulation component is connected to the output end of the motor to be tested;Load simulation component is arranged on the side of power simulation component;Load simulation component can be moved relative to power simulation component;Load simulation component moves to the state of contact with power simulation component, for applying load to power simulation component.By load simulation component simulating different geometric states and rail disease line conditions, motor output speed stability test can be carried out before vehicle installation and debugging, with the advantages of low test cost, short test cycle, high test efficiency and small space occupied.

The application provides a method, device and storage medium for determining an exhaust valve closing phase, which is applied to the technical field of vehicle engines. The method comprises the following steps: obtaining a power demand and an economic demand of the engine; performing power simulation on the engine according to the power demand, to obtain a first feasible range of the exhaust valve closing phase of the engine; performing economic simulation on the engine according to the economic demand and the first feasible range, to obtain a candidate phase of the exhaust valve closing phase of the engine; and determining an optimal exhaust valve closing phase of the engine according to the candidate phase. The method can start from the power demand and the economic demand of the engine, and determine the optimal exhaust valve closing phase of the engine by performing power and economic simulation and analysis on the engine, so that the engine performance can meet the performance demand of the whole vehicle, and the fuel consumption is reduced to the lowest level.

This invention discloses a method, device, and medium for safety training in the power industry based on virtual reality, relating to the field of power simulation technology. The method includes: acquiring raw data of operational behavior, including timestamps, hand spatial trajectories, action triggering states, and power equipment numbers; generating action segment data based on the hand spatial trajectories and action triggering states, and constructing action chain data based on the timestamps and power equipment numbers; calculating and generating sequence deviation scores and path offset scores based on the action chain data and standard process data; generating evaluation score records based on the sequence deviation scores, path offset scores, and duration in the action segment data; and generating evaluation results containing step numbers, score values, and action offset markers based on the evaluation score records. This invention achieves automatic identification and deviation quantification evaluation of key action steps in power operation processes without the need for manual expert review or subjective scoring standards.

The invention relates to the technical field of electric power simulation modeling, and discloses a current collection system modeling method, device and equipment for a new energy station and a medium, and the method comprises the steps: constructing a new energy power generation equipment simplified model, a direct current converter simplified model and simplified models of all sections of cables in a current collection line; determining an electrical connection relation between the new energy power generation equipment simplified model and the direct current converter simplified model according to a circuit topology of an actual current collection system; on the basis of the electrical connection relation, the new energy power generation equipment simplified model and the direct current converter simplified model are connected through the cable simplified model, the number of electrical nodes can be reduced, the number does not exceed the maximum electrical node limit of simulation software, the simulation calculation amount is reduced, and the simulation efficiency is improved.

The invention discloses an on-line simulation verification method and device for source network load storage collaborative optimization scheduling, and relates to the technical field of simulation verification processing, and the method comprises the steps: carrying out the simulation of each regulation and control time period of a scheduling plan of a source network load storage system through an on-line simulation system; the on-line simulation system is constructed by a thermal power simulation module, a wind power simulation module, a photovoltaic power generation simulation module and an energy storage system simulation module in the micro-grid, the real-time performance of the on-line simulation system is optimized by adopting a model order reduction mode, and network operation state information is evaluated through a scheduling plan evaluation index system. The scheduling plan evaluation index system considers the updating frequency of the scheduling plan, optimizes the real-time performance of the simulation verification process, and evaluates the scheduling plan effect through the scheduling plan evaluation index system. Therefore, the purposes of optimizing the real-time performance of online simulation verification in the online simulation verification process of the source network load storage collaborative optimization scheduling and evaluating the scheduling plan effect are achieved.

The application discloses a river network branch point hydrodynamic simulation method based on mechanism data fusion, relates to the field of hydraulic engineering, and comprises the following steps: acquiring simulation data by performing dynamic simulation on a local high-precision hydrodynamic model based on set boundary working conditions; acquiring a proxy model by performing model training based on a time sequence training sample set and pre-set branch point physical constraints; embedding the proxy model into a one-dimensional river network hydrodynamic model; and updating original branch point hydraulic states in the one-dimensional river network hydrodynamic model by using standard branch point results output by the proxy model. The model is trained based on a time sequence sample set and pre-set branch point physical constraints to acquire a proxy model, and intermediate parameters of the one-dimensional river network hydrodynamic model are updated by using inference results of the proxy model, so that the simulation efficiency of the one-dimensional river network hydrodynamic model is ensured, the overall accuracy of simulation results is improved, and real-time flood forecasting and engineering scheduling requirements are effectively supported.

The application relates to a time-of-use electricity price dynamic adjustment mechanism-based proxy electricity purchasing user power consumption behavior simulation method and system, which comprises the following steps: constructing multi-dimensional power consumption characteristics, performing improved K-means user portrait recognition based on condensed hierarchical clustering initialization, integrating an enhanced adaptive random forest model and a bidirectional-LSTM hybrid prediction model (EABRF-BiLSTM), performing transfer learning and inverse normalization power simulation, establishing a mapping relationship between the time-of-use electricity price dynamic adjustment mechanism and the proxy electricity purchasing user power consumption behavior, and outputting time-of-use power consumption prediction results under different electricity price schemes; the application can solve the problems that a traditional load prediction method cannot explain user price response behavior, a traditional clustering method is insufficient in stability, a few-sample user is difficult to start, and a normalized model is difficult to serve actual power decision-making.

The invention relates to the technical field of electric power simulation, and provides a multi-extra-high-voltage direct-current interconnection simulation method and system, electronic equipment and a storage medium. According to the implementation scheme, the method comprises the steps that an electromagnetic transient simulation model is divided into a plurality of sub-models, and the sub-models are loaded to data processing racks respectively; under the control of a clock synchronization signal sent by a synchronization signal concentrator, each data processing rack carries out iterative operation solution on each sub-model in parallel, and the operation solution result of each iteration is mutually exchanged through a multi-data switch so as to obtain each operation solution result; and on the basis of each operation result, determining a simulation result of the multi-extra-high-voltage direct-current interconnection simulation system. According to the embodiment of the invention, the complex electromagnetic transient simulation model is segmented and loaded to the plurality of parallel computing nodes, and strict clock synchronization and high-speed data exchange mechanisms are supplemented, so that efficient and accurate simulation of the complex electromagnetic transient process of the multi-extra-high-voltage direct-current interconnection system is realized.

The invention discloses a heterogeneous acceleration board card for electric power simulation and a method thereof, belongs to the technical field of electric power simulation, and aims to solve the problems of low processing efficiency, low transmission rate and poor stability of the existing board card, the heterogeneous acceleration board card adopts an FPGA + DSP heterogeneous architecture, and is matched with a DDR4 / DDR3 special storage module, a PCIe 3.0 * 16 / 2.0 * 2 dual high-speed interface and an SFP28 optical fiber module; and an optimized power supply clock scheme and FLASH and USB-to-JTAG auxiliary configuration are supplemented. The FPGA module is responsible for parallel data processing, the DSP module is responsible for floating point operation, the dual-storage module guarantees data stability, and the high-speed interface meets the multi-scene transmission requirement. The electric power simulation processing delay is reduced to 3.2 ms, the transmission bandwidth reaches 800 Gbps, the data error rate is lower than 10 <-12 >, the starting success rate is 99.9%, the simulation real-time performance and reliability are remarkably improved, and the method is suitable for a complex electric power simulation scene of an intelligent power grid.

A kind of power dynamic test model structure belongs to the technical field of wind tunnel test aircraft design.It solves the problem that dynamic and power simulation wind tunnel test cannot be carried out simultaneously in the prior art.The technical points are as follows: the central wing is installed on the fuselage, the left and right sides of the central wing are connected with outer wings, the nacelle mechanism is installed on the bottom of the central wing, the vertical tail is installed at the tail end of the fuselage, the central wing framework is connected to the square platform of the middle fuselage framework, the central wing framework is provided with a motor installation groove and a motor wiring groove, the upper part of the central wing framework is covered with a central wing pipeline cover plate, the central wing front skin covers the central wing front lightening groove, and the central wing rear skin covers the central wing rear lightening groove.The present application strengthens the local strength of the model, ensures the firm connection between the nacelle mechanism and the model, and ensures that the model itself can withstand the gravity of the nacelle mechanism and the shaking generated during operation, on the basis of ensuring that the reference center of the aircraft model coincides with the actual center of mass of the model and the overall weight reduction of the model.

This invention discloses a processor configuration method and system for a power simulation system, relating to the field of power system simulation technology. The method involves acquiring simulation task requirements and topology diagrams of the power simulation system to be configured; extracting information from the topology diagram according to the simulation task requirements to obtain electrical quantity parameters; performing operational computational requirements analysis based on the electrical quantity parameters and simulation task requirements to obtain multiple test indicators; constructing a power test model using the electrical quantity parameters and historical data of the power simulation system to be configured; evaluating the performance of the power test model by pre-setting an initial processor and various test indicators to obtain corresponding evaluation results; and optimizing the initial processor based on the evaluation results to obtain the target processor corresponding to the power simulation system to be configured. This invention solves the technical problem of existing processor selection methods for power simulation systems, which fail to fully utilize historical data and reduce the reliability of the power simulation system.

The invention discloses a relay protection setting parameter optimization adjustment method and device, equipment and a medium, and the method comprises the steps: correcting a parameter value according to the current health data of a target mutual inductor, initializing a parameter value of a virtual mutual inductor in a power simulation model according to the corrected parameter value, and carrying out the optimization adjustment of the virtual mutual inductor in the power simulation model through the initialized power simulation model. And performing analog simulation on the actual operation scene corresponding to the historical fault data to obtain a secondary side waveform output by the virtual transformer in the actual operation scene corresponding to the historical fault data, evaluating the risk of transient saturation of the target transformer according to the secondary side waveform, and adjusting relay protection setting parameters according to a risk evaluation result. And the adjusted setting parameter is obtained. The adjusted setting parameters can effectively cope with secondary current distortion caused by transformer degradation and transient saturation, and the judgment accuracy of relay protection under the conditions that the equipment health state changes and the transient saturation risk exists is improved.

The invention is suitable for the technical field of electric power simulation, and provides a three-dimensional simulation control circuit generation method and system and electronic equipment, and the method comprises the steps: responding to a user topology adjustment operation, starting from a set terminal in a circuit topology, carrying out the recursive traversal of a plurality of topology nodes in the circuit topology, determining a grounding state of a common end in the plurality of topological nodes and a topological connection relationship between non-common ends; under the condition that the grounding state is an effective grounding state, determining at least one target topological branch extending from each non-common end based on the topological connection relationship, and determining branch current and branch voltage of each target topological branch corresponding to each non-common end; generating a legal target wire path based on the branch current of each target topological branch; and generating a three-dimensional simulation control circuit based on the branch current, the branch voltage and the target wire path. According to the scheme, the generation efficiency of the three-dimensional simulation control circuit can be improved, and the real-time interaction requirement of electric power operation training is met.

The disclosure provides a low-power simulation method, device, equipment, storage medium and program product, and relates to the technical field of integrated circuits. The method comprises the following steps: determining an initial synthesis model of a register transfer level corresponding to a chip to be simulated; determining a target synthesizable model corresponding to the chip to be simulated based on the initial synthesis model; generating a target gate-level netlist corresponding to a power supply loop in low-power simulation according to an initial gate-level netlist corresponding to the chip to be simulated; and performing low-power simulation including the power supply loop on the target synthesizable model and the target gate-level netlist based on a preset hardware simulation accelerator. The method greatly accelerates the low-power simulation convergence time and improves the simulation efficiency.