224 results about "Power simulation" patented technology

The invention relates to a wind generator power optimization system based on drift correction. The system comprises a data acquisition module, a power simulation module, a wind direction offset diagnosis module and a control module. The data acquisition module is used for collecting real-time data of operation of a draught fan, and storing the real-time data to form historical data. The power simulation module is used for reading the historical data, screening the historical data, establishing a balanced data set according to the screened data and establishing a power model according to the balanced data set. The wind direction offset diagnosis module generates control information according to the received power model and the real-time data and sends the control information to the control module. The control module adjusts the drift angle of the draught fan according to the received control information. In addition, the invention further provides a wind generator power optimization method based on drift correction. According to the wind generator power optimization system and method based on drift correction, the drift angle can be diagnosed and adjusted in real time, the service life of a wind generator set is prolonged, and the operation safety factor is improved.

The invention discloses a suspension type monorail vehicle dynamic model and a vehicle-bridge coupling power simulation method, belongs to the technical field of rail traffic and aims to solve the technical problem that an existing suspension type monorail dynamics simulation device is large in simulation result errors during rail beam local vibration research. By providing the suspension type monorail vehicle system dynamic model, a rubber wheel-rail surface contact mechanical model, a rail beam bottom plate and web equivalent surface force application method and a vehicle and rail beam coupling dynamic model building method, a suspension type monorail vehicle-rail beam coupling dynamic simulation system is built. By the model, the system and the method, suspension type monorail vehicle system suspension mechanism decoupling and equivalent treatment are achieved, and the technical problems that the existing suspension type monorail dynamics simulation device is large in simulation result errors during the rail beam local vibration research, rail beam dynamic stress and strain results are hard to extract, rail beam local strength destroying cannot be evaluated accurately and the like are solved.

A class of modular, double-sided, edge-mounted printed circuit (PC) board modules and an associated modular network architecture for constructing stripline signal processing networks including high-power analog amplifiers and beam forming networks for driving multi-beam antenna systems. The stripline signal processing networks are characterized by network elements constructed from defined-length segments of transmission media configured to exhibit precisely determined phase and impedance characteristics. These circuits may also include conventional passive “lumped” electrical elements, such as resistors, capacitors and inductors; non-linear circuit elements such as diodes; and active electrical elements, such as amplifiers and transistors.

The invention discloses a power grid multi-section power automatic control method based on distributed multi-agent reinforcement learning. The method can achieve the autonomous learning of a proper multi-section power control strategy for a complex power grid through the interaction of multiple agents and a power simulation environment. The method comprises the following steps of firstly, N target sections are selected according to the need of power grid control, and basic elements such as an environment, an intelligent agent, an observation state, an action and a reward function of the reinforcement learning method are constructed; secondly, a multi-section power control task interaction environment is operated, and an initial power flow data set is created; then, a decision network and an estimation network based on a deep neural network are constructed for each agent, an MADDPG (multi-agent deep deterministic strategy gradient) model is constructed, and a distributed method is introduced to train an autonomous learning optimal control strategy; and finally, the trained strategy network is applied to perform automatic section control. The method is advantaged in that a complex power grid multi-section power control problem is solved through the multi-agent reinforcement learning method, the control success rate is high, expert experience is not needed, and meanwhile agent training efficiency is greatly improved by introducing the distributed method.

A power estimation system uses a hardware accelerated simulator to advance simulation to a point of interest for power estimation. The hardware accelerated simulator generates a checkpoint file, which is then used by a software simulator to initiate simulation of the processor design model for power estimation. An on-the-fly power estimator provides power calculations in memory. Thus, the power estimation system described herein isolates instruction sequences to determine portions of software code that may consume excess power or generate noise and to provide a more accurate power estimate on the fly.

The invention belongs to the application field of a power electronic technology in a power system, in particular relates to a power simulation method of a permanent magnet synchronous motor, and provides a novel method for power simulation of the permanent magnet synchronous motor. A simulated motor model capable of accurately simulating the permanent magnet synchronous motor is designed by adopting double PWM (Pulse-Width Modulation) converter structures according to the basic characteristics of the permanent magnet synchronous motor, wherein the converters at a rectifier side of the simulated motor model are controlled according to the characteristics of the permanent magnet synchronous motor, so that the external interface characteristic voltage, the current, the rotating speed and other information of the simulated motor model are consistent with those of the actual motor; and the energy is fed back to a supply network by the inverter side. The simulated motor model is compact in whole structure design and is capable of accurately simulating the static characteristics and the dynamic characteristics of the actual permanent magnet synchronous motor. The simulated motor model is strong in adaptability, namely, the simulated motor model can be used for simulating various types of permanent magnet synchronous motors by only changing parameter setting in the simulated motor model. The electric energy during the testing is fed back to the supply network by the inverter side due to the adoption of an energy-feedback-type electronic load structure, so that the energy saving is realized.

Systems, methods and apparatus related to a high speed, high dynamic range and low power consumption radar system are provided herein. The radar system may include an analog correlator which combines various pulse replication schemes with various parallel integrator architectures to improve the detection speed, dynamic range, and power consumption of conventional radar sensors. The radar system may further include a matched filter for determining a match of a portion of a received PCR signal and producing an output signal in response to further improve the speed of detection of the radar system.

The invention discloses a four-engine propeller aircraft wind tunnel test model based on air motors. One end of a supporting member is fixedly connected with a wind tunnel balance rack, and the otherend is connected to a main balance by means of a supporting rod connection member and an air bridge. Empennage and aerofoil assemblies are installed on an aircraft body, the middle section of the aircraft body is fixedly connected to balance connection members, the other end of each balance connection member is fixedly connected to the main balance, and a whole aircraft acting force is transmittedonto the main balance by means of the balance connection members. Flaps and ailerons are connected with an aerofoil stabilizing plane by means of respective angle changing pieces. A force and momentof a propeller are measured in real time by means of a rotating shaft balance during a wind tunnel test. A flow control device is installed in the aircraft body, and controls output power of the air motors by controlling gas flow. The invention provides a design method of the wind tunnel test model using the air motors for simulating power of the propellers, the flow field similarity degree in thepropeller power simulation tests is improved, and the data precision of wind tunnel tests is effectively improved.

The invention discloses a power simulation training resource management system and method based on a metadata integration model. The system comprises a central CWM model library unit, an integrated switching platform unit and a resource access service interface unit. The integrated switching platform unit is connected with the central CWM model library unit and the resource access service interface unit bidirectionally, and the resource access service interface unit is connected with a power simulation training resource management system body bidirectionally. According to the system, on the basis of features of the power simulation training resource management system, simulation resources of various power simulation training systems can be integrated though a common metadata integration model unrelated to the bottom layer, a metadata model capable of describing a simulation resource library and service analyzing field completely, and uniform management of the simulation resources in different power simulation training systems can be realized.

The embodiment of the invention discloses a method for testing the transmission efficiency of an automobile transmission system. After the trial production of a sample vehicle is completed, the sliding test of the sample vehicle is carried out, real sliding resistance is obtained, then according to a stress condition of wheels, a calculation formula of the transmission efficiency of the transmission system is obtained, the acceleration test of the sample vehicle is carried out, test data of a vehicle speed, a longitudinal acceleration, an engine speed, an output torque of an engine, a turbine speed, a transmission speed ratio and the like of the vehicle in an acceleration condition are collected, the transmission efficiency of the transmission system is calculated through the collected test data, and the test of the transmission efficiency of the transmission system is realized. By using the method provided by the embodiment of the invention, the more accurate transmission efficiency of the transmission system more close to a real usage condition can be obtained, a basis is provided for evaluating the transmission system, and a data support is provided for subsequent vehicle power simulation analysis and system matching optimization further.

The invention discloses a power plant simulation system taking frequency deviation into consideration. An SFR (system frequency response) expansion model considering a boiler/auxiliary engine is established. The operating process of a thermal power plant is simulated on the basis of considering that substantial deviation of system frequency causes power output fluctuations of the power plant auxiliary engine. A boiler/auxiliary engine model is additionally arranged, influences imposed on power output by the frequency are taken into consideration, an actual condition that power output of a unit increases firstly along with frequency reduction and then decreases when the frequency reduces substantially can be simulated, the frequency dynamic process within a wider range can be simulated more accurately, and influences imposed on the boiler or the auxiliary engine by wide-range deviation of the frequency are explained. According to the invention, the boiler/auxiliary engine model is additionally arranged, and the influences imposed on power output by the frequency are taken into consideration, the actual condition that power output of the unit firstly increases along with frequency reduction and decreases when the frequency reduces substantially can be simulated, and the frequency dynamic process within a wider range can be simulated more accurately.

The invention discloses a hybrid train energy management method and system based on deep reinforcement learning. The method comprises: acquiring historical data of the train running speed, the train running environment, the train running energy consumption information and the train running power assembly information of a hybrid train to serve as source data; extracting speed, acceleration and battery capacity from the source data as input, taking an energy management strategy as output, and establishing an energy management strategy model; establishing a train power simulation model, and inputting the energy management strategy into the train power simulation model to obtain a simulation running state and a reward parameter; optimizing the energy management strategy model according to thereward parameters; performing offline training through deep reinforcement learning to obtain an optimized energy management strategy model; and inputting the real-time data of the hybrid train into the optimized energy management strategy model to obtain an optimized energy management strategy. According to the invention, the hybrid power train energy management can be carried out by completely applying a machine learning artificial intelligence means.

The invention discloses a VR-based power simulation teaching system and teaching method. The VR-based power simulation teaching system includes a display component, a sense of touch component and a control component, wherein the display component is used to display a virtual power training scene; the sense of touch component is used to obtain operation data generated during the process in which atrainer performs operation according to the power training scene; the control component is used to receive and process the operation data so as to obtain a control command, and send the control command to the outside; and the display component is also used to update the virtual power training scene in real time according to the control command. The VR-based power simulation teaching system has theadvantages: providing various intuitive and natural real-time sensory interaction means for the relevant trainers by transforming the traditional training teaching in the power field into a combination with the virtual reality technology, thus maximizing the convenience for operation of the trainers, and giving an intuitive perception for the trained personnel so as to improve the quality of training.

The invention provides an ionized layer incoherent scattering radar simulation system, which is characterized in that a modular design idea is adopted, the system is divided into a signal simulation module, an incoherent scattering spectrum simulation module, an ionized layer parameter analysis module, a radar power simulation module and an antenna array simulation module according to a radar actual system structure and functions of each extension set, module functions are basically the same as completing functions of each system extension set, transmission and sharing of data and information among the modules can be realized, and dynamic demonstration is carried out by using an MATLAB graphical user interface function. The ionized layer incoherent scattering radar simulation system well solves a problem that the incoherent scattering radar is small in number of research platform and difficult in test, and can help the technicists to improve abilities of analyzing and solving problems and an ability of carrying out radar equipment technical research.

The invention discloses a heating apparatus, and a nuclear reactor core power simulation apparatus and method. According to the corresponding apparatus and method, uneven electric heating elements with different axial power distribution which can be matched with life period initial stage and ending stage of nuclear reactor core fuel elements are manufactured; the two kinds of uneven electric heating elements are directly inserted into a cladding pipe to realize reactor core power axial uneven distribution simulation at the nuclear reactor life period initial stage and ending stage; and by combination of the two kinds of uneven electric heating elements, and by controlling the inserting depth of the uneven electric heating elements through an electric heating element position fixing and regulating apparatus, the reactor core power axial uneven distribution simulation of the nuclear reactor in different stages can be realized. The apparatus and the method are simple and feasible, and reactor core power axial and radial uneven distribution of the nuclear reactor in different life periods can be accurately reflected.

The invention relates to a vertical or short-distance takeoff and landing aircraft ground effect test system, belonging to the fields of aerodynamic tests and other force measurement experiments. The vertical or short-distance takeoff and landing aircraft ground effect test system is characterized by comprising an experiment system support, a force measuring scale, a simulation fuselage, a lift fan simulation device, a propulsion/lift power simulation device, a tested aircraft model and a floor, wherein the force measuring scale is installed on the top of the experiment system support, the simulation fuselage is installed on the bottom of the force measuring scale, the lift fan simulation device is installed at the front part of the simulation fuselage, the propulsion/lift power simulation device is installed at the rear part of the simulation fuselage, the tested aircraft model is installed at the lower part of the simulation fuselage, and the floor is installed at the lower part of the experiment system support. With the system, the takeoff and landing process of a vertical/short-distance takeoff and landing aircraft can be simulated, the stressing condition of the vertical/short-distance takeoff and landing aircraft is measured, and the jet stream ground effect of the vertical/short-distance takeoff and landing aircraft is researched. The system has the advantages of simple structure, low cost, easiness and convenience for operation and the like.

The present invention discloses a gate adjusting and controlling method suitable for a series channel downstream emergency water interruption condition, and relates to the adjusting and controlling field. The method comprises the steps of constructing a water power simulation model of a to-be-monitored channel engineering; adopting a three-point water level control method to real-timely adjust a most downstream check gate where an emergency event occurs and the gate closing rate of all last-level check gates of the most downstream check gate until the inlet flow rate and the outlet flow rate of a channel pool to which any one check gate belongs are balanced, and stopping closing the check gate of the channel pool; calculating the real-time water storage quantity of the channel pool to which the check valve belongs according to the real-time flow rate of the check gate, utilizing the real-time water storage quantity at the current moment to adjust the flow rate of the check gate at thenext moment until the real-time water storage quantity of the channel pool is equal to the target water storage amount of the channel pool, thereby adjusting and controlling the gate of the channel where the emergency event occurs. The gate adjusting and controlling method of the present invention reduces the maximum damming height in front of the gate, reduces an overflowing risk, at the same time, can adjust the water level after the emergency event is ended, and prevents the water level after the stabilization from being too high.

The invention discloses a beach shallow sea water power simulation method, comprising following steps: (1) acquiring water depth data of a target sea area; (2) a grid dividing step: dividing the target sea area by adopting two sets of grids of main grids and sub grids; (3) acquiring distribution of a Manning coefficient; (4) establishing a boundary condition and an initial condition; (5) based on an improved shallow water equation, performing dispersion and calculation of the improved shallow water equation on the main grids, calculating a porosity theta, an equivalent water depth Y and an equivalent bottom friction coefficient Cd on the sub grids, and finally calculating and outputting flow rate and water level results of the target sea area. The beach shallow sea water power simulation method adopts the two sets of grids, namely the thicker main grids and the thinner sub grids. The main grids have higher calculation efficiency, the sub grids have higher information precision, and the method combines the advantages of the main grids and the sub grids, so that the calculation precision is improved while the calculation speed is improved.

The invention discloses a multi-user online cooperating method, device and system for power simulation training. The method comprises the steps that whether the state of a virtual character in a three-dimensional virtual scene changes or not is recognized; after it is recognized that the state of the virtual character changes, the type of the changed state is obtained; state change information is generated based on the type of the changed state, and virtual character information and cooperating information are packaged in the state change information; the state change information is sent to a virtual character member associated to the three-dimensional virtual scene based a preset multi-user online cooperating communication mechanism according to the type of the virtual character; the virtual character member associated to the three-dimensional virtual scene completes corresponding cooperation according to the state change information. The multi-user online cooperating communication mechanism is defined, the work of multi-user online cooperating in power electric transmission line simulation training is achieved based the state change, and the need that numerous trainees are connected and log in to study at the same time is met.

The invention discloses an embedded motor and load power level simulation system which comprises a real-time resolving part and an electronic load part, wherein the real-time resolving part comprises a field programmable gate array (FPGA) and a digital signal processor (DSP), and the electronic load part comprises a controllable current source and a voltage sampling resistor. The voltage sampling resistor samples the pulse width modulation (PWM) voltage output by a driving controller of a component under test, sends the voltage to the FPGA through an analog to digital converter (ADC) to conduct current resolving, sends all the current values of the motor to the DSP, and the current values are sent to the controllable current source to produce three-phase winding forward and reverse currents and the three-phase winding forward and reverse currents are output to the driving controller of the component under test to conduct the load power simulation. The DSP completes the calculation of motor rotor position and counter electromotive force according to the input data, sends back the results to the FPGA, and sends preset parameter winding resistance and winding inductance to the FPGA. The FPGA obtains HALL signals and rotary transformer signals through calculation, and inputs the HALL signals and the rotary transformer signals to the driving controller of the component under test to simulate the motor signals.