108results about How to "Simulate the real" patented technology

The invention discloses a tunnel grouting diffusion form prediction system and method. The system comprises a tunnel simulation device used for preparing a tunnel model with cracks to simulate a tunnel rock mass; the grouting simulation system is used for conducting grouting on the tunnel simulation device by adjusting grout diffusion influence factors, and the grout diffusion state under the influence of multiple factors is obtained. The grouting diffusion form quantification system is used for cutting the grouted tunnel simulation device to obtain a plurality of slices at depth positions, and performing grid division on the surface of the slice at each depth position to obtain a grout diffusion form quantification data set; and the grouting diffusion form prediction system is used for constructing a multi-modal space-time fusion depth prediction model and inputting the grout diffusion form quantitative data set into the multi-modal space-time fusion depth prediction model to predict the diffusion form of the future grout. According to the method, the prediction model is established, and the grout diffusion form quantitative data set is used as the space-time sequence data set, so that the space-time prediction of the grouting diffusion form is realized.

The invention discloses a multi-time-sequence three-dimensional visualization expression method for flood routing, and the method comprises the steps: analyzing NetCDF data of a two-dimensional hydrodynamic model, building an element index library and a space library, and storing the indexes of water level, water depth, flow velocity and the like and the space information of an irregular triangular mesh. And generating an association relationship between the grid points and the element indexes, and creating a time sequence cache attribute table and a spatial data set. And reading three-dimensional point space data and element index data, constructing a three-dimensional space grid, and performing range cutting by using a two-dimensional surface data set. And generating a time sequence service conforming to a three-dimensional model tile data format by adopting a thread pool technology. And loading a three-dimensional service and a terrain service at a browser end, carrying out color and height rendering based on the element values, and dynamically displaying the flood process. And a timer is arranged to realize three-dimensional visual playing moment by moment. The method has the advantages that the dynamic display capability of flood routing is effectively improved, and efficient three-dimensional visual rendering and real-time playing are supported.

The invention discloses a goaf gas and coal spontaneous combustion composite disaster simulation system and prediction method, and belongs to the technical field of coal mine thermodynamic disaster evolution process simulation tests. The simulation system comprises a transparent cover body, a simulation test bed, a mining working face similar simulation model, a gas supply unit, a monitoring unit, a camera device and a balancing weight. The inclination angle of the base is adjusted by adjusting the telescopic supporting legs, a water bag is used for simulating a coal seam, and a coal pillar serves as a methane release channel in the simulated mining process. A mining process is simulated, gas is conveyed, methane and oxygen concentration data evolution laws are monitored, a related contour map is drawn, interpolation is carried out to reconstruct a space dangerous area, finally, a phase space reconstruction method is adopted to carry out chaos prediction, and disaster space form changes are analyzed. The simulation test and visualization of the evolution process of the gas and coal spontaneous combustion composite disaster can be realized, a dangerous area is quantitatively represented, a theoretical basis is provided for disaster prevention and control, and the energy safety and the life safety of workers are guaranteed.

The invention provides an Internet of Things cooperative routing method based on multi-agent deep reinforcement learning. The method comprises the following steps: constructing a wireless sensor network model; constructing an energy consumption model; establishing an optimization problem of network routing according to the constructed wireless sensor network model and the energy consumption model; modeling the optimization problem into a multi-agent reinforcement learning problem, and selecting an optimal routing path according to the multi-agent reinforcement learning problem; wherein in the multi-agent reinforcement learning problem, each sensor node is regarded as an independent agent, and each agent learns a strategy for optimizing the overall network performance according to a local state and a reward mechanism. According to the invention, the energy utilization efficiency of the routing protocol is improved, routing with balanced energy is realized, and the network life cycle is effectively prolonged.

The invention discloses an accelerated aging test system and method for a high-density polyethylene buried pipeline, and the system comprises a box body which is internally provided with a test chamber for an aging test; a plurality of buried pipeline test pieces are arranged in the test chamber in a drawable manner through the test piece dismounting and mounting system; the in-pipe pressurization system is used for carrying out gas pressurization on the plurality of buried pipeline test pieces; the water bath system is used for injecting water into the test chamber to provide a water bath environment; the high-temperature system is used for heating the environment temperature in the test chamber or is matched with the water bath system to provide water bath environments with different temperatures for the plurality of buried pipeline test pieces; the ultraviolet irradiation system is used for performing ultraviolet irradiation on the plurality of buried pipeline test pieces; and the in-pipe pressurization system, the water bath system and the high-temperature system are all connected with the control system. According to the invention, coupling conditions of various aging factors during real service of the buried pipeline can be truly and rapidly simulated, effective reference basis can be provided for safe operation and construction design of the high-density polyethylene buried pipeline, and the method has great advantages.

The present application is about an arm exoskeleton, an upper body exoskeleton and a teleoperation system, and relates to the field of robots. The arm exoskeleton includes a shoulder exoskeleton, an elbow exoskeleton and a wrist exoskeleton; the shoulder exoskeleton, the elbow exoskeleton and the wrist exoskeleton are connected in sequence. When the arm exoskeleton performs active movement according to control instructions, or performs passive movement following the user's arm movement, the shoulder motor group simulates the movement guided by the human shoulder joint, the elbow motor group simulates the movement guided by the human elbow joint, and the wrist joint group simulates the movement guided by the human wrist joint. When the user wears the arm exoskeleton to exercise, the motor group and the skeleton are combined and set corresponding to the shoulder joint, elbow joint and wrist joint of the user's arm, so that the arm exoskeleton simulates the human body movement more realistically during the movement process, and improves the simulation accuracy of the human body movement state.

The invention provides a system frequency response estimation method and system based on a fault position, and belongs to the technical field of new energy power grids, and the method comprises the steps: constructing a new energy multi-operation-state model; solving the node voltage of the state model after the fault based on the superposition principle and iterative calculation, establishing a mapping model of the fault position and the low-cross cluster, obtaining the initial value of the active power vacancy, and comprehensively considering the difference between the initial value of the active power vacancy and the active recovery rate between stations at different fault positions. Calculating the system-level total active power vacancy considering the station low-voltage crossing characteristic difference; and constructing a system frequency response model based on the frequency modulation capability difference caused by the fault position, and estimating the system frequency response by adopting the response model. According to the invention, quantitative description of active power vacancy and system equivalent frequency modulation capability loss after disturbance at different fault positions is realized, so that the accuracy of frequency response analysis is improved.

The invention relates to the technical field of vacuum tanks, in particular to a thermal vacuum simulation system for space environment simulation and test, which comprises a thermal vacuum simulation container, a vacuum guarantee system, a temperature guarantee system, an illumination simulation system and a control system, the vacuum obtaining subsystem comprises a low-vacuum obtaining unit and a high-vacuum obtaining unit, a mechanical pump of the low-vacuum obtaining unit is used as a pre-pumping pump, a mechanical pump of the high-vacuum obtaining unit is used as a pre-pumping pump, and a mechanical pump of the high-vacuum obtaining unit is used as a pre-pumping pump. A molecular pump and a low-temperature pump of the high vacuum obtaining unit serve as main pumps, the vacuum degree required by an experiment can be rapidly obtained, the vacuum degree is more convenient to control, and the problem that the vacuum degree and the temperature of an existing thermal vacuum test tank are not easy to control is solved.

The invention relates to the technical field of medicine capsule detection, in particular to a capsule medicine solubility detection device which comprises an obstacle module, a liquid pumping module, a vibrator, a constant temperature controller, a temperature sensor, a visual sensor and a central control assembly. The method comprises the following steps: analyzing each acid real-time image, performing primary judgment on a target capsule medicine according to an analysis result to determine whether to start a disturbance mode, and performing secondary judgment on the target capsule medicine based on the disturbance mode to obtain a secondary judgment result; determining whether to perform second-class detection on the target capsule medicine or not according to the secondary judgment result; receiving each alkalinity real-time image monitored by the visual sensor in real time in the second-class detection process; analyzing each alkalinity real-time image so as to judge the target capsule medicine for three times; based on the third judgment result, the central control assembly outputs a final detection report of the target capsule medicine in combination with the first judgment result and the second judgment result.

The invention relates to the technical field of building component detection, and particularly discloses a building component anti-seismic test device which comprises a base and two side frames fixedly installed at the top of the base and symmetrical front and back, a top plate is jointly installed at the tops of the two side frames, and four guide columns distributed in a rectangular mode are jointly installed between the top plate and the base. A first hydraulic cylinder is fixedly installed on the top of the top plate, the output end of the first hydraulic cylinder penetrates through the top plate in a sliding mode and is provided with a lifting alignment unit, and a multi-point shock unit, a synchronous driving unit and a rotating face changing unit used for bearing and rotating a concrete beam column are arranged between the lifting alignment unit and the base. According to the invention, targeted simulation design is carried out aiming at the two characteristics of directivity and intermittence of seismic transverse waves in the propagation process, and the intermittent period of the seismic waves in the propagation process is simulated by adjusting the transient stop impact of the shock component in the process of adjusting the impacted surface of the concrete beam column.

The invention provides an experimental device for simulating migration of micro-plastic in an undisturbed soil column under a rainfall condition and application, and belongs to the technical field of soil micro-plastic migration. Comprising a Markov bottle and a simulated soil column, the right side of the upper end of the Markov bottle is provided with a water inlet with a stainless steel cover, and the left side of the upper end of the Markov bottle is provided with an exhaust pipe with scale marks on the surface; the bottom of the Markov bottle is higher than the top of the simulated soil column rainfall tray; the simulated soil column comprises a rainfall disc and a column body arranged below the rainfall disc, the rainfall disc is of a dial type, exhaust holes are formed in the surface of the rainfall disc, a needle head is arranged in the rainfall disc, and the rainfall disc is connected with the upper end of the column body through a flange plate; the column body is divided into an air layer, an undisturbed soil column filling layer and a quartz sand layer which are sequentially connected through flange plates, a water outlet is formed in the bottom of the flange plate at the lower end, and the column body is a hollow cylinder with an upper opening and a lower opening.

The invention discloses a double-support active unbalance loading rolling fatigue testing machine, and particularly relates to the technical field of material testing. Comprising a driving motor, a driven motor, a dynamic torsion sensor, a driving spindle box, a driven spindle box, an accompanying sample connecting seat, a loading strut beam, an accompanying sample seat, a main sample seat, a loading servo motor, a reduction gearbox, a loading lead screw, a loading cross beam, a loading force sensor, a torsion spindle seat, a torsion transmission shaft, a torsion connecting flange plate, a torsion lever and a torsion loading weight, and the right side of the driving motor is fixedly connected with a main sample roller through a flexible coupling. According to the double-support driving unbalance-loading rolling fatigue testing machine disclosed by the invention, by arranging double-side support structures of the main sample seat and the auxiliary sample seat and matching the main sample seat and the auxiliary sample seat with flexible couplings between the main sample seat and the auxiliary sample seat as well as the main sample roller and the driven roller for transmitting power, the problem of non-uniform loading stress of a cantilever beam is solved; and the vibration effect of the driven sample is effectively improved, so that the accuracy and stability of the test are improved.

This application discloses a simulation device and method for multiple unidirectional impact load tests under gradient confining pressure, comprising a track, a specimen, and several impactors. The track includes a horizontal section, one end of which is connected to a ramp section. The specimen is located on the horizontal section, and a gradient confining pressure device is provided outside the specimen to pressurize it. Several impactors, acting as power input sources, are released from the ramp section at different heights above the ground and move along the track, sequentially impacting the specimen to apply multiple unidirectional impact loads. The impactors can be nested sequentially so that subsequent impactors can pass over earlier impactors, avoiding collisions between them. This application enables the specimen to be subjected to gradient confining pressure and multiple unidirectional impact loads to simulate the blasting damage effect of multiple blasting loads on surrounding rock with continuously changing stress states in underground engineering.

The present invention relates to a radio astronomy signal and radio frequency interference simulation method and its application, equipment and medium, including alternative radio astronomy signal generation, alternative radio frequency interference generation, current radio astronomy signal and radio frequency interference generation, antenna array simulation, acquisition system simulation, network transmission simulation and source data generation, etc., which can randomly generate mixed signals containing radio astronomy signals and radio frequency interference in time domain, frequency domain, space domain and power domain based on measured and simulated signals, and generate data sets by simulating different receiving antenna arrays and acquisition system responses, which can be transmitted to the radio astronomy signal processing system through the network as test data, and can also generate source data with labels required for deep learning to provide support for scientific research. Compared with the prior art, the present invention solves the problem of generating test data required for the back-end processing system of the radio telescope by combining simulation with measured signal utilization, and the simulated signals and scenes are more complex and realistic.

The invention relates to a low-pressure stirring and forming integrated device, and relates to the field of concrete test equipment. The low-pressure stirring and forming integrated device comprises a low-pressure sealed cabin and a material mixing unit, wherein a plurality of feeding units are arranged on the outer wall of the low-pressure sealed cabin; and a maintenance mechanism is arranged at the inner bottom of the low-pressure sealed cabin. According to the low-pressure stirring and forming integrated device, a constant low-pressure environment is manufactured through the vacuum pump, the stirring barrel is driven to move to the position below the corresponding inclined material guide pipe through the rotating motor, sand, cement, stone and water are sequentially added, then stirring is conducted, and after stirring is completed, stirring is conducted. The rotating motor drives the stirring barrel to move to the top of one group of test mold boxes, materials are poured into the test mold boxes through the discharging nozzles, then the vibration motor moves to the position below the test mold boxes along with the stirring barrel for vibration, then the stirring barrel is cleaned by adding water, and clean water is poured into the sewage tank; therefore, concrete feeding, discharging, forming and subsequent stirring barrel cleaning processes are more convenient.

The invention discloses a photo-induced phase change protein and application thereof. The protein with the phase change function is provided for the first time, and the amino acid sequence of the protein is shown as SEQ ID NO.7; the invention further provides the IDR polypeptide with the phase change function, and the amino acid sequence of the IDR polypeptide is shown as SEQ ID NO.5. The invention also provides an application of the PE1 protein in photo-induced phase transition. The tool has the advantages of being high in space-time precision, good in biocompatibility, capable of integrating physiological signals and the like, can be used for controllable phase separation research, local enrichment, material construction and the like, and has wide prospects in the fields of life science research, drug development and synthetic biology.

The invention relates to the technical field of detection devices, and particularly provides a ballpoint pen point friction force detection device which comprises a rack, a workbench is arranged on the rack, writing paper is placed on the workbench, a rotating disc is further rotationally arranged on the workbench, a mounting block is slidably arranged at the bottom of the rotating disc, and a plurality of transmission cylinders are rotationally connected into the mounting block. The bottom of the transmission cylinder is rotationally connected with a clamp, the clamp clamps a pen point, the rotating disc drives the pen point to draw a circle on writing paper and is not in a vertical state but in an inclined state, the human hand use state can be simulated, and therefore the friction force detection precision is improved, and the detection result more tends to the friction force in the human hand use state; a large number of pen points can be detected at a time, the detection efficiency is greatly improved, the adjusting assembly is arranged on the mounting block, the adjusting assembly can adjust the abutting force of the multiple pen points to writing paper, and therefore the friction force borne by the pen points under different pressures can be detected.

The utility model provides an environmental flying dust simulation device, and relates to the technical field of flying dust simulation devices. Comprising a mounting frame, an air blower is fixedly mounted on one side of the outer surface of the mounting frame, an air pipe is fixedly mounted at the output end of the air blower and fixedly mounted on the inner wall of the mounting frame, and a sand inlet pipe is fixedly mounted at the top of the outer surface of the air pipe and mounted on the inner wall of the top of the mounting frame; an anti-blocking sand inlet structure is arranged at the top of the outer surface of the sand inlet pipe, by arranging a first annular clamping block and an annular clamping groove, the sand inlet round frame and the sand inlet pipe can be fixed in an auxiliary mode, then a sand filtering net in the sand inlet round frame can filter large-particle matter in sand dust, the large-particle matter is prevented from being accumulated and blocked in the air pipe, and the anti-blocking effect is achieved. And under the action of a transmission gear and an outer gear ring block, a brush plate can be driven to rotate, so that the brush plate can sweep large-particle dust filtered by a sand filter screen, and blockage caused by accumulation is avoided.

The present invention discloses a core holder, an indoor simulation experiment system and method for simulating water injection fracturing cracks. The core holder comprises a cylinder, a rubber sleeve, a core sealing cover and a core plug. The cylinder is provided with an inner cavity along the inner center for placing the core, and openings are provided at both ends of the inner cavity, which are a water injection end and a water outlet end respectively; the rubber sleeve is circumferentially arranged in the inner cavity for circumferentially sealing the core; the present invention realizes the simulation of dynamic cracks induced by water injection in the core by modifying the existing holder; and the crack conditions inside the core can be monitored by an acoustic emission device, and a data acquisition control device can collect relevant data in real time, so as to further understand the generation mechanism, specific manifestation form and influence law of development effect of dynamic cracks induced by water injection and volume fracturing network; dynamic crack simulation can be performed for both full-diameter cores and square cores, which can simulate the actual underground conditions more realistically.

The invention discloses a targeted drilling slurry annular film forming simulation device and method. The device comprises a support, a simulation well body and a sealing sleeve, and the simulation well body is arranged on the support and has a pitching stroke; the simulation well body comprises a first well cavity, a second well cavity, an annular filtration cavity and a mud film permeability testing cavity, the annular filtration cavity is of a rigid filter net-shaped semi-closed cylinder structure, the mud film permeability testing cavity is of a rigid semi-closed cylinder structure, and a filter net structure is arranged on one half cylinder; the first end of the annular filtration cavity is connected with the first well cavity, and the second end of the annular filtration cavity is connected with the opening end of the second well cavity; and the sealing sleeve covers the annular filtration cavity. The device is applied to the field of targeted drilling, simulation of different stratum conditions can be realized by replacing simulated stratum materials, and a generation test of a space circumferential mud film during targeted drilling under the conditions of different angles and different mud pressures is carried out; and the formation of the mud film in the spatial dimension in targeted drilling and the permeability test of the mud film in different spatial areas can be simulated more truly.

The invention discloses a foam curtain generation and performance characterization device and method and application. The device comprises a foam curtain injection system used for generating a foam curtain, a combustion system used for heating the foam curtain and a motion capture system used for capturing the motion trail of the foam curtain. The foam curtain injection system comprises a foam mixed liquid tank body, a pump body and a foam curtain injector, the pump body is arranged between the foam mixed liquid tank body and the foam curtain injector, and the pump body is connected with the foam curtain injector through a pipeline; the combustion system comprises a combustion gas cylinder, a combustion improver cylinder, a combustion mixer and a combustor, the combustion gas cylinder and the combustion improver cylinder are respectively connected with the input end of the combustion mixer through pipelines, and the combustor is connected with the output end of the combustion mixer. The device can monitor the motion trail of the marking section foam curtain in real time and control the angle of combustion flame, so that the marking section foam curtain receives heat radiation all the time, the actual working condition is simulated more truly, and the actual heat insulation effect is reflected.

The application relates to a shock absorber road load acquisition method, an analysis method and system and a storage medium, which comprise the following steps: determining hard points connected with other components in a shock absorber assembly in a suspension design state; establishing a shock absorber assembly dynamics model, and establishing a local load coordinate system of each hard point related to the dynamic load of a shock absorber piston rod on the shock absorber piston rod; establishing a local load coordinate system of each hard point related to the dynamic load of a shock absorber cylinder on the shock absorber cylinder; setting displacement output between an upper point of the shock absorber piston rod and a lower fixed center point of the shock absorber, force and torque output borne by the shock absorber piston rod, and force and torque output borne by the shock absorber cylinder; establishing a whole vehicle multi-body dynamics model; and simulating the response of each system of the vehicle under various virtual road surface excitations. The application can truly simulate the change condition of the shock absorber road load.

The present invention discloses a method for constructing a carrier communication attenuation model based on a data statistics method, and its technical solution includes: step 1, collecting low-voltage channel attenuation data from transformer to primary node, point-to-point and ultra-long distance in different periods of the pilot area; step 2, obtaining the average channel attenuation of the segment; step 3, respectively counting the segmented probability distribution of the attenuation data from transformer to primary node, point-to-point and ultra-long distance, and obtaining a data statistical model of channel attenuation. The model can truly simulate the attenuation environment on site, which helps R&D personnel to grasp the attenuation characteristics of the carrier communication channel, so as to optimize the communication algorithm in a targeted manner.

The present invention relates to the field of wear resistance testing technology, and in particular to a thermal spray coating wear resistance testing device, comprising a testing table, a driving cavity is provided inside the testing table, an L-shaped groove connected to the driving cavity is provided on the top of the testing table, a cylinder is provided on the inner side of the L-shaped groove, a U-shaped table is fixedly connected to the top of the cylinder, a clamping mechanism is provided on the U-shaped table, a pair of support frames are fixedly connected to the top of the testing table, a transverse friction block and a longitudinal friction block are respectively fixedly connected to the bottom of the support frames, a driving mechanism is provided in the driving cavity, and the driving mechanism comprises an upper driving motor and a lower driving motor. Through the mutual cooperation of the above structures, the present invention can move the coating on the test module back and forth along the X-axis and Z-axis directions to perform friction testing, without the need for the tester to repeatedly clamp and change the direction of the test module, and can more realistically simulate the actual use scenario of being subjected to simultaneous friction in multiple directions, so that the test result is more accurate.

The utility model discloses a flooding test device for simulating a flood discharge process, which relates to the technical field of test devices, and comprises a test box, a plurality of planting plates planted with crops are arranged in the test box, the planting plates are immersed in water in the test box, a detachable cover plate is arranged at the top end of the test box, and the cover plate is connected with the test box. Two first linear motors are arranged at the bottom end of the cover plate, and a fixing beam is arranged at the bottom of the cover plate. The first linear motor drives the push plate to reciprocate in the test box to push water flow in the test box to move so as to generate waves, meanwhile, the fan is used for driving air to flow and blow to the water surface, strong wind weather can be simulated while the waves are generated, rainfall is simulated through the rainwater simulation assembly, and the test efficiency is improved. Therefore, the flood and weather conditions in the flood discharge process are simulated more truly, and the effect of the flooding test is improved.

The present invention provides a device for simulating an industrial air film coal shed, belonging to the field of coal storage, to provide a device capable of simulating the internal environment of an industrial air film coal shed. An inlet and outlet channel is connected to the bottom of one side of the air film structure, two channel airtight dampers are connected to both sides of the inlet and outlet channel, an air inlet channel and an air outlet channel are attached to the bottom of the air film structure, the end ends of the air inlet channel and the air outlet channel are not connected, a sensor hanging rod is installed inside the air film structure, a sensor hook is fixed on the sensor hanging rod, each sensor is installed on the sensor hook, a total air inlet of the fan is arranged on the air inlet channel, a total air outlet of the regulating wind window is arranged on the air outlet channel, a plurality of air inlets are arranged on the air film structure at intervals and located at a position where the air film structure is covered by the air inlet channel, a plurality of air outlets are arranged on the air film structure at intervals and located at a position where the air film structure is covered by the air outlet channel, the air inlet and the air outlet can be sealed or opened by a detachable air film, a PLC control cabinet is arranged in the inlet and outlet channel, and each sensor is connected to the PLC control cabinet.

This invention relates to the field of experimental equipment technology, and particularly to an NMR combustion-explosion dynamic load multi-field coupling experimental device and method. The technical solution includes a control module, an impact module, a detection module, and a vibration reduction module; wherein, the control module includes an operating platform, a transmission line, an engine, a fuel tank, an oxygen tank, connecting pipes, a high-temperature resistant fuel nozzle, and a high-temperature and pressure resistant gas sealing pipe; the operating platform is located behind the engine. This invention achieves graded control of dynamic load through combustion-explosion-electromagnetic composite loading, integrates simultaneous detection of multiple physical fields such as nuclear magnetic resonance, acoustic waves, and resistivity, sets up multi-level vibration reduction and dissipation structures to absorb residual kinetic energy, adopts a high-temperature and high-pressure resistant sealing design to ensure safety, simulates ground temperature, ground stress, and pore fluid fields to reproduce the deep in-situ multi-field coupling environment, and is centrally controlled and automatically reset by the operating platform, thereby realizing a laboratory simulation of deep dynamic disasters with flexible and adjustable parameters.

A cloud-native resource scheduling optimization method based on predictive perception and deep reinforcement learning, the specific process includes: collecting cluster operation data and constructing scheduling samples; generating future load prediction results based on historical load sequences; constructing a prediction-enhanced scheduling state representation; determining the target node using continuous preference output and action mask; performing task allocation and life cycle management; updating the scheduling policy based on a multi-objective reward function; achieving policy convergence through experience replay and target network updates; online deployment and incremental reasoning. The present application introduces the future load prediction results of the nodes into the scheduling state representation, so that the scheduling decision is not only based on the current node resource state and task demand, but also combines the resource pressure change trend in the future period of time, thereby improving the early identification ability of the scheduler for potential high-load nodes.

The application belongs to the field of power system management, and specifically discloses a charging load probability space-time distribution prediction method considering random fluctuations of commuting demand. A multi-dimensional travel strategy set is constructed to simulate the comprehensive decision of users in energy, time and space. Uncertainty is introduced from the demand side, and Monte Carlo sampling is used to generate demand fluctuation samples to describe the random fluctuations of the load from the root. An utility evaluation model is constructed based on cumulative prospect theory to correct the limited rationality of users. A multi-layer nested discrete choice model is used to divide the decision into three levels of charging, departure and path, and a heuristic algorithm is used to iterate to traffic network equilibrium. In the equilibrium state, the strategy selection proportion is combined with the demand sample to input the dynamic traffic network model, and the space-time probability distribution of the charging load is output. The probability space-time distribution of the evening peak electric vehicle charging load is more accurately predicted, and a scientific basis is provided for charging facility planning and power grid dispatching.

The invention belongs to the technical field of coal underground gasification simulation experiments, and discloses a coal underground gasification physical simulation device and method considering the stress direction, the coal underground gasification physical simulation device comprises a support frame, and a high temperature resistant simulation cabin is movably arranged on the support frame; the high-temperature-resistant simulation bin comprises a simulation bin body movably erected on a supporting frame, the simulation bin body is filled with a coal sample, and the side wall of the simulation bin body is provided with a horizontal pressurization assembly used for conducting horizontal plate pressurization on the coal sample. A simulation bin top cover is arranged at the top end of the simulation bin body in a sealing manner, and a vertical pressurizing assembly for vertically pressurizing a coal sample is arranged on the simulation bin top cover; a plurality of auxiliary components for assisting simulation experiments are arranged at the bottom end of the simulation bin body. The device is simple in structure, can artificially simulate and control the underground gasification process of a coal sample, explores gasification furnace cavity expansion control factors and technologies under a real stress field condition, and can provide physical experiment reference and basis for application of coal underground gasification engineering.