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75 results about "Station model" patented technology
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In meteorology, station models are symbolic illustrations showing the weather occurring at a given reporting station. Meteorologists created the station model to fit a number of weather elements into a small space on weather maps. This allows map users to analyze patterns in atmospheric pressure, temperature, wind speed & direction, cloud cover, precipitation, and other parameters. The most common station plots depict surface weather observations although upper air plots at various mandatory levels are also frequently depicted.
Transformer station model construction method based on BIM and GIS
ActiveCN104835079ASustainable development impactImprove methodData processing applicationsTransformerSimulation
The invention relates to a transformer station model construction method based on BIM and GIS. The method comprises the following step: firstly, determining the electric design scope of a transformer station to be constructed in model; secondly, obtaining parameter data and GIS image information of the transformer station to be constructed in model; thirdly, establishing a three-dimensional circuit design platform based on the BIM and GIS according to a B / S network configuration; fourthly, constructing a BIM model database in the three-dimensional circuit design platform based on the BIM and GIS through the parameter data of the transformer station, and carrying out space layout configuration according to the GIS image information; and fifthly, constructing a transformer station whole model through the combination of the space layout configuration and the BIM model database, and carrying out display, query, retrieval, positioning and safety management according to the transformer station whole model. Compared with the prior art, the transformer station model construction method has the advantages that the method is advanced, the coverage is comprehensive, the efficiency is improved, etc.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
Safety and stability control system modeling method in power system dynamic simulation
ActiveCN102193504AOvercome the shortcomings of not being able to reflect the behavior of safe and stable control actionsSimulation is accurateSimulator controlElectric power systemOperation mode
The invention relates to a safety and stability control system modeling method in power system dynamic simulation. The method comprises the following steps of: performing hierarchical modeling on the safety and stability control system in a hierarchical decomposition mode; simulating an operation mode, fault information and a control strategy by adopting a ladder logic diagram to obtain a main station model and a sub-station model; and connecting a safety and stability control system model and a primary system model to realize the close-loop dynamic simulation of a large-scale power system which contains the safety and stability control system model. By the method, various different action behaviors and control characteristics of the safety and stability control system in the large-scale power system can be simulated accurately; the defects that conventional simulation software cannot reflect the action behaviors of the safety and stability control system are overcome; postmortem analysis of complex and severe accidents can be performed; and the requirements of the large-scale power system dynamic simulation on the simulation of the safety and stability control system can be met.
Owner:CHINA ELECTRIC POWER RES INST +1
Method for building solar power station model through shade analysis
ActiveCN102163341AOptimize layoutEnsure scientific layoutPV power plantsPhotovoltaic energy generationTerrainEngineering
The invention discloses a method for building a solar power station model through shade analysis. The method comprises the following steps of: acquiring terrain data, obstacle data and solar power module data; drawing a shadow distribution map; building an initial solar power station model; and analyzing and calculating shade after the model is built. In the method, according to the influence of terrain, buildings and other obstacles constructed by humans on a solar power module, optimal arrangement of the solar power module is achieved to ensure scientific layout and maximize conversion efficiency of the solar power module.
Owner:POWERCHINA HEBEI ELECTRIC POWER SURVEY & DESIGN INST CO LTD
Design method of intelligent substation model based on cad graphics and model integration
ActiveCN102270261ASolve the problem of insufficient design depthEnsure consistencySpecial data processing applicationsInformation technology support systemTransformerLoop design
The invention discloses a design method for an intelligent transformer station model based on CAD (Computer-Aided Design) graph and model integration. According to the method, the design of a secondary loop and the generation of a model file of the intelligent transformer station are synchronously completed; a data object corresponds to the back of each entity, and the model can be operated by a graph, therefore, the consistency of the design of the secondary loop and the model file is ensured, and the problem that the traditional intelligent transformer station is not deep enough is solved; and synchronously the design of the transformer station model can be finished by designers not familiar with 61850 design details, the role and the function of a design organization are strengthened in the establishing of the intelligent transformer station, and the visibility in operation and maintenance of the transformer station is increased; furthermore, the method is combined with the habits of traditional designers and is used for performing graphical loop design based on an AutoCAD platform so that the operation of the designers is convenient; an IEC61970CIM model is used in a primary system to describe the model, therefore, the data supporting other applications can be exported, and the openness of the method is increased.
Owner:SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
Operation method for safely applying line protection device to wind power station
InactiveCN102208801AAvoid disconnection issuesExtended power generation timeEmergency protective circuit arrangementsElectrical testingEngineeringWorkstation
The invention discloses an operation method for safely applying a line protection device to a wind power station, which relates to the relay protection of a power plant and is provided aiming at solving the problem that the line protection device in the current system cannot meet the protective requirements of the wind power station very well. The operation method comprises the following steps of: firstly, establishing a real-time simulation model which is a virtual power grid environment, including fault points in a wind power station, a bus and transmission lines, a main transformer unit of a power generator, a current and voltage mutual inductor, an equivalent system and a simulation system; secondly; establishing an experimental detection platform including a real-time digital simulation work station, an RTDS (Real Time Digital System) real-time digital simulator, an analogue quantity output board card, a power amplifier, a line protection device, an analogue circuit breaker, a switch conversion device and a digital quantity input board card; and thirdly, accessing the line protection device to be detected to the power amplifier of the detection system, then connecting the line protection device with the analogue circuit breaker and carrying out various kinds of experiments. The experiment implemented by using the wind power station model and an onsite oscillograph of the wind power station can provide a real and accurate simulation environment so that validation possibility is improved, and therefore the line protection device to be detected can be safely used for the wind power station after detected.
Owner:内蒙古自治区电力科学研究院
Intelligent draining scheduling system and method
ActiveCN105353711AReduce energy consumptionPrevent overflowProgramme controlComputer controlGenetic algorithmNetwork model
The invention discloses an intelligent draining scheduling system and method. The system comprises a daily energy-saving submodule and an emergency scheduling submodel. The system is based on a pump station model and a pipe network model. The daily energy-saving submodule solves a minimum energy consumption solution of a pipe network through employing a genetic algorithm, and can effectively solve a problem that the daily energy consumption of a pump station is too high. The emergency scheduling submodel enables each pump station to give play to the strongest draining capability of the pipe network for draining during scheduling at each time, and can effectively solve a problem that the pipe network cannot give play to the strongest draining capability.
Owner:上海水顿智能科技有限公司 +1
Intelligent telecontrol communication machine based remote data subscribing and releasing method
The invention provides an intelligent telecontrol communication machine based remote data subscribing and releasing method. The remote data subscribing and releasing method includes the steps: acquiring data information generated from station equipment in a transformer substation and storing the data information in an RDB (relation model database); subjecting the data information to plenoptic modeling, acquiring CIM (common information model) files of all-station models, uploading the CIM files to a main scheduling station, analyzing the CIM files, selecting the data information to generate the same into subscribing files, subscribing the subscribing files to an intelligent telecontrol communication machine, analyzing the subscribed files, dynamically establishing a forwarding information table of subscribing information, and locally storing the forwarding information table prior to being disconnected. When the subscribing information is released, connection between the main scheduling station and communication is restarted, and the corresponding data information in the RDB database is transmitted to the main scheduling station according to the stored forwarding information table. By the technical scheme, efficiency and accuracy in subscribing and forwarding of the data information between the main scheduling station and the transformer can be greatly improved, and working efficiency and working quality of scheduling and operating of the power grid are improved.
Owner:CHINA SOUTHERN POWER GRID COMPANY +1
Method for detecting matching property of all-station model files based on promulgator/subscriber mode
InactiveCN101609407AHigh degree of automationAvoid failures that don't work properlyCircuit arrangementsProgram loading/initiatingCentralized managementStation model
Owner:STATE GRID TIANJIN ELECTRIC POWER
Method and device for route planning of school bus
InactiveCN109764884AReduce data sizeInstruments for road network navigationLongitudePlanning approach
The invention provides a method and device for route planning of a school bus. The scale of data of route planning of the school bus can be effectively decreased. The method comprises the steps that coordinates of latitude and longitude of student home addresses and a school address are acquired; according to expected values of distances from students to stations and maximum values of distances from the students to the corresponding stations, a school bus stop station model is established; according to the established school bus stop station model, clustering is conducted on the longitude andlatitude of the student home addresses, and division information of school bus stop stations and student cluster belonging stations is acquired; and according to the acquired coordinates of the student home addresses and the school address and the division information of the school bus stop stations and the student cluster belonging stations, route planning is conducted. The method and device forroute planning of a school bus are suitable for route planning operations.
Owner:UNIV OF SCI & TECH BEIJING
Transformer substation online secondary equipment standing book information acquisition method
InactiveCN105305617ACircuit arrangementsInformation technology support systemInformatizationTransformer
The invention discloses a transformer substation online secondary equipment standing book information acquisition method. According to the invention, content extension is carried out on an IEC61850 model of equipment such as a protection device, a measurement and control device and the like in the substation, and secondary equipment standing book information is written into a CID model and transmitted to a background monitoring system. The background monitoring system is upgraded, and the acquired secondary equipment standing book information is compiled into a monitoring system model through substation control level MMS communication. Through the technical scheme disclosed by the invention, the monitoring system can update transformer substation secondary equipment information in real time, all-station model integration is carried out on acquired single device information so as to generate a whole plant station secondary equipment model, the acquired information is provided for a power grid information system to use so as to realize overhauling assistance, operating assistance and asset life cycle management of a transformer substation, a panoramic model of the transformer substation and the equipment is constructed, and the informatization, automation and intelligentization level of the transformer substation can be improved.
Owner:ZHONGSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID +1
Vehicle end, information processing system, and vehicle end radio uninterrupted play method
ActiveCN103378914AGuaranteed to keep listeningImprove experienceBroadcast specific applicationsBroadcast information updateIndex testInformation processing
A vehicle end, an information processing system, and a vehicle end radio uninterrupted play method are provided. The vehicle end radio uninterrupted play method comprises monitoring radio signals of a current radio station in a local radio station of a current location of the vehicle end and performing in index test, and obtaining a test value. When the test value is smaller than a standard critical value, the test value indicates that the radio signal of a current radio station is interrupted or weak, and at this time, a prompt instruction for starting a network radio station is sent, and a network radio station model is started based on user selection; a network radio station acquisition request which includes acquiring a request of network radio station information corresponding to the current radio station is sent to a cloud end server; and based on the network radio station information which is corresponding to the current radio station and issued by the cloud end server, network broadcasting information of the network radio station corresponding to the current radio station is acquired, and thus broadcast information of the current radio station can be continuously received, continuous listening to the current radio station by the user is guaranteed, and client experience at the vehicle end is accordingly improved.
Owner:SHANGHAI PATEO ELECTRONIC EQUIPMENT MANUFACTURING CO LTD
Navigation information flow system simulating operation of satellite navigation system
InactiveCN106383357AFix performance issuesSolve associativitySatellite radio beaconingData informationObservation data
The invention discloses a navigation information flow system simulating the operation of a satellite navigation system. The navigation information flow system comprises a spatial segment i satellite models, a ground segment k monitoring station models, a master station model, j injection station models, a satellite orbit simulation module and a scheduling planning service module, wherein the satellite models receive the ground navigation data, processes and sends navigation data to the monitoring station models when the related equipment is available, the satellite orbit simulation module calculates the visual satellite models of the monitoring station models and collects the observation data, receives the observational information of the visible satellite models when monitoring equipment is available and sends the observation information to a master control station when a communication network is available, the master station model receives the observation information and processes and generates navigation data information when the related equipment is available to dispatch to related injection station models, and the injection station models receive the navigation data information and sends the navigation data information to target satellite models when both the business-related equipment and the communication network are available.
Owner:CHINA AEROSPACE STANDARDIZATION INST
Day-to-day steady state optimization analysis method for an integrated energy system under the participation of energy storage
ActiveCN109523076ABuffer the shock of fluctuationsReasonably reflect the operating characteristicsForecastingDesign optimisation/simulationIntegrated energy systemMathematical model
The invention discloses a day-to-day steady state optimization analysis method for an integrated energy system under the participation of energy storage. The method designs energy hubs and energy coupling methods based on multiple types of load requirements. On the basis of energy hubs, the energy station model structure of coupled electric heat, gas, and cold steam subsystems is proposed. Then, the electric energy in the integrated energy system separately. Steady-state mathematical model of gas-cooled steam system are established; and the influence of storage, heat storage and cold storage on the integrated steady-state energy system of grid-connected operation is analyzed; secondly, electricity-containing heat and gas cooling under different load structures are established. The steady-state nonlinear optimization model of the steam subsystem is in the past; the final example analysis verifies the effectiveness of the steady-state optimization calculation and steady-state operation analysis of the integrated energy system. The invention mainly solves the problem of insufficient coordination of various subsystems in the current integrated energy system, and the method can reasonably reflect the operational characteristics of the integrated energy system.
Owner:HOHAI UNIV
Variable-parameter capacitance compensation equivalent modeling method for wind power station of constant-speed wind power unit at fluctuating air speed
InactiveCN102034008ASolve the problem of reactive power errorIncrease reflectionSpecial data processing applicationsInformation technology support systemFrequency stabilizationCapacitance
The invention relates to a variable-parameter capacitance compensation equivalent modeling method for a wind power station of a constant-speed wind power unit at a fluctuating air speed, which belongs to the technical field of wind power generation, overcomes the defect of reactive power error existing in an equivalent model established at the fluctuating air speed by the conventional equivalent method and solves the problem of difficult calculation of a variable-parameter capacitance in the equivalent model established by the conventional variable-parameter compensation. A method for calculating the variable-parameter capacitance is given for two machine end reactive compensation modes respectively by using the reactive power error between variable-parameter capacitance compensation before equivalence and variable-parameter capacitance compensation after equivalence, so that the wind power station model is equivalent to a constant-speed wind power unit at a fluctuating air speed. Themethod is suitable for dynamic equivalent modeling of a large-volume wind power station at a fluctuating air speed and analysis of the influence of the large-volume wind power station on a power system. The wind power station equivalent model can be applied to the researches of synchronization problem of the wind power station, such as dispatching and balancing of wind power, the problem of stable frequency at a constant air speed, analysis of the stability of stationary voltage of the wind power station and planning and design of a wind power station access system.
Owner:HARBIN INST OF TECH
Secondary safety measure visualization method of intelligent transformer station
InactiveCN107563520AReduce inspection and testing workloadShorten maintenance timeData processing applicationsSpecial data processing applicationsState of artData set
Provided is a secondary safety measure visualization method of intelligent transformer station, which can resolve the technical problem of the prior art that the secondary safety measure of the relayprotection device maintenance at the site of the intelligent transformer station cannot be effectively executed and maintained. The secondary safety measure visualization method comprises the steps ofcollecting the work ticket of the secondary safety measure of the intelligent transformer station and preparing a secondary safety measure work ticket template; producing a visualized device and obtaining the transformer station configuration description file SCD of the present version, and analyzing SCD information; connecting to an intelligent electronic device IED with the visualized device, and establishing an intelligent electronic device IED model based on the SCD information, and improving the intelligent transformer station model; conducting visualized display of the execution state of the work ticket, and checking the report control block and data set state and related data of the transformer station. The invention is advantageous in that the work ticket flow is standardized; maintenance time is shortened; labor productivity is raised; the examination and detection workload of the protective device and the secondary loop can be reduced; the problem of incomplete or excessivesafety work can be prevented.
Owner:STATE GRID ANHUI ELECTRIC POWER +2
Automatic linear model adjusting method and device
ActiveCN104889633AGuaranteed accuracyEnsure consistencySimulator controlWelding/cutting auxillary devicesSimulationLinear model
The invention discloses an automatic linear model adjusting method. The method includes according to the initial automatic linear model, arranging a robot model, a station model and a clamp model, and arranging the robot model in the first direction of the station model; installing a welding gun model on the robot model, and arranging a workpiece model in the clamp model; marking the workpiece model with a predetermined welding spot position; performing spot welding on the workpiece model by controlling the robot model and welding gun model through the on-site program, and acquiring a simulative welding spot position; acquiring a deviation value between the simulative welding spot position and the predetermined welding spot position according to the simulative welding spot position and the predetermined welding spot position; when the deviation value is larger than a first preset threshold, adjusting the direction of the robot model corresponding to the station model according to the deviation value until the deviation value is smaller than the threshold, and allowing the adjusted robot model to be in the second direction of the station model. The invention further provides an automatic linear model adjusting device.
Owner:GUANGQI HONDA
Solving method of charge and discharge scheme for battery changing station
InactiveCN106408122AReduce consumptionIncrease incomeBatteries circuit arrangementsForecastingElectric-vehicle batteryEnergy consumption
A solving method of a charge and discharge scheme for a battery changing station firstly brings forward hypothetic conditions of a battery changing station model, analyzes the profit mode of the battery changing station, builds a maximum income target function of the battery changing station through the profit mode, brings forward constraint conditions, and then inputs raw data of the battery changing station into the model. Finally, the method obtains a charge and discharge strategy with the maximum income and response for the battery changing station. The provided solving method aims to solve the deficiency of optimal charge and discharge management methods of electric vehicle battery changing stations in the prior art, thus the invention provides the lean calculation method of the optimal charge and discharge strategy for the electric vehicle battery changing station from the perspective of linear optimization, so that the method can do lean analysis of the economic income and energy consumption of the battery changing station and further find a charge and discharge management scheme with low energy consumption and high income, which is a supplement and improvement of the existing optimal charge and discharge method of the electric vehicle battery changing station.
Owner:UNIV OF SHANGHAI FOR SCI & TECH
Method for automatically generating plant station diagram through SCD model file
InactiveCN108897913AConducive to seamless transmissionReduce drawing workloadGeometric CADSpecial data processing applicationsGraphicsWiring diagram
The invention discloses a method for automatically generating a plant station diagram through an SCD model file. The method comprises the following steps: S1 analyzing the SCD model file so as to generate the topological structure of the plant station model; S2 reading the topological structure of the plant station model so as to generate the corresponding graphic structure; S3, calculating the frame coordinates of each graphic object in the frame layout and structure according to the graphic structure; S4 generating the frame graphic element according to the layout and the frame coordinates of the frame object; S5 generating the connection relationship within the plant station diagram and a plant station diagram database including the attributes of the equipment graphic elements; and S6 generating the frame object and exporting it. The workload of drawing the plant station diagram and the workload of aligning points in each grade system of the electric power automation system can be reduced so as to be favorable for the cross-platform seamless transmission of the main wiring diagram of the substation.
Owner:NR ELECTRIC CO LTD +1
Three-dimensional informatization modeling method for transformer station
InactiveCN105005948AQuick searchMeet the needs of various applicationsData processing applicationsInformatizationTransformer
A three-dimensional informatization modeling method for a transformer station is characterized by comprising the following steps: forming a transformer station object foundation database; establishing pipeline, electric, heating and ventilation, and equipment component information databases; establishing a basic three-dimensional model according to a total station arrangement; establishing an informatization relation rule according to a transformer station design code; and forming complete three-dimensional informatization transformer station model data. The three-dimensional informatization modeling method for the transformer station provided by the invention can fast and visually retrieve various types of document data information data through the three-dimensional model. Compared with a conventional common three-dimensional model, the three-dimensional informatization modeling method for the transformer station is accompanied with a variety of information content other than three-dimensional visual expression. The three-dimensional informatization modeling method for the transformer station takes the three-dimensional informatization model as a center, provides application for the retrieval of various types of engineering data information and a transformer station informatization operation system, and provides convenience for a three-dimensional digitized information management platform for the transformer station.
Owner:YUNNAN POWER GRID CO LTD PUER POWER SUPPLY BUREAU
Model center construction method among heterogeneous scheduling systems based on agency service
The invention discloses a model center construction method among heterogeneous scheduling systems based on agency service, comprising: constructing a model service agent architecture based on on-demand sharing; and creating a bidirectional subscription issue method based on a plant-station model version, a model center model maintenance privilege management method, and a heterogeneous scheduling subsystem and model center area model comparison method. A model center can realize power grid model distribution and maintenance and whole network instant sharing of whole network physical model consistent storage, solve the problems of complex flow, poor instantaneity, incomplete splicing data, poor expansibility, etc. of a distributed modeling method of forming a large power grid model in a model splicing mode, and guarantee great consistency of each power grid model connected to a model center system. The model center construction method among heterogeneous scheduling systems solves the problems of model fusion, interaction efficiency, security and model partition maintenance in the construction of a model center among heterogeneous scheduling systems.
Owner:NARI TECH CO LTD +3
Central heating system modeling method considering pipe network heat accumulation benefits
InactiveCN106294961ATake advantage of scheduling flexibilityGeometric CADConstraint-based CADEnergy couplingCogeneration
The invention relates to a central heating system modeling method considering pipe network heat accumulation benefits and belongs to the field of multi-energy coupling system modeling. A central heating system model comprises four sub-models including a cogeneration unit model, a circulating water pump model, a heat exchange station model and a power supply network model, and each sub-model is formed based on corresponding constraint conditions. In the established model, the time quasi-dynamic property of a heat supply pipe network is considered, so that the heat storage property of the heat supply pipe network can be well reflected. The established model is suitable for being applied to heat supply network and power grid combined dispatching decision making.
Owner:TSINGHUA UNIV
Method for building solar power station model through shade analysis
ActiveCN102163341BOptimize layoutEnsure scientific layoutPV power plantsPhotovoltaic energy generationTerrainEngineering
Owner:POWERCHINA HEBEI ELECTRIC POWER SURVEY & DESIGN INST CO LTD
Multi-type energy storage configuration method for comprehensive energy system
ActiveCN110503271ATap into flexibilityFully exploit spare capacityForecastingResourcesNetwork modelOperation mode
Owner:NANJING UNIV OF TECH +1
Undercurrent line selection test system and method based on PSCAD closed loop technology
The invention discloses an undercurrent line selection test system based on PSCAD closed loop technology, which comprises a typical transformer station model built by taking a PSCAD simulation software as the platform, a simulation control module for a lot of fault models and an active undercurrent grounding line selection apparatus effect model, a data processing module, a signal transmission module, a signal amplification module, a test feedback module and a result analysis module, wherein the test system has the advantages of high simulation result fitting degree, wide popularization and simple operation, and according to the test system, a lot of automatic simulation tests can be done; and the test result can be analyzed and evaluated based on real need.
Owner:GUANGXI UNIV
Method for detecting digitized transformer station model
The invention discloses a method for detecting a digitized transformer station model. In recent years, IEC61850 and digitized transformer stations are developed quickly; however, great difference exists due to different producers and different device models, which brings great difficulties and hidden troubles to debugging and running; therefore, a detection means and a method which are simple, practical, effective and comprehensive are needed. In accordance with an IEC61850 standard, the method for detecting the digitized transformer station model supports a standardized detection aiming at the domestic 'Engineering Implementation Technical Specifications of IEC61850 International Standard', and is widely applied to the model detection of digitalized and conventional IEC61850 transformer station comprehensive automatic systems, wherein the method comprises the following steps of: detecting whether an XML format is right and performing Schema verification; detecting basic unit data, namely detecting the information such as logical nodes, common data, data objects, attributes and the like; resolving and detecting a model GOOSE and four-remote information; comparing offline and online models; and detecting SCD file virtual terminals.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
Multistage voltage control partitioning method for grid connection of electric automobile charge, discharge and storage integrated station
InactiveCN104022513AEasy to handleGuaranteed connectivityAc network load balancingAc network voltage adjustmentState of artHigh dimensionality
The invention relates to a multistage voltage control partitioning method for grid connection of an electric automobile charge, discharge and storage integrated station. The method comprises the following steps: 1), establishing an electric automobile charge, discharge and storage integrated station model; 2), defining an electrical distance controlled by a reactive power source from the perspective of a reactive power source; 3), establishing a weight CS multi-target module degree index for evaluating voltage control partitioning quality; 4), performing multistage step voltage control partitioning; and 5), performing multi-scene optimization on different function behaviors of the electric automobile charge, discharge and storage integrated station. Compared to the prior art, the method has the following advantages: a high-dimension cluster problem is effectively handled, the problem scale is reduced, and a high-quality partition scheme is obtained through an algorithm by quite high calculation efficiency.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER
Lateral inlet pump station model test rectification method
InactiveCN108629070AReduce sedimentationIncrease water flowDesign optimisation/simulationSpecial data processing applicationsMathematical modelPhysical model
The invention discloses a lateral inlet pump station model test rectification method. The method comprises the steps of 1: setting lateral inlet pump station forebay regulation measures; 2: building aphysical model according to a set scheme; 3: building a mathematic model according to the set scheme and performing calculation; 4: performing comparative analysis on a physical model calculation result and a mathematic model calculation result; and 5: comprehensively analyzing a scheme calculation result to obtain an optimal lateral pump station forebay regulation scheme. The improvement of a water inlet flow condition of a pump station can effectively improve the running performance of a water pump, reduce the sediment accumulation, improve the running reliability and economy of the pump station, reduce the cost and increase the benefits.
Owner:HOHAI UNIV
Grid-connected monitoring and evaluation method and system for photovoltaic power station
InactiveCN108988382APhotovoltaic monitoringSingle network parallel feeding arrangementsPower qualityReal-time simulation
The invention discloses a grid-connected monitoring and evaluation method and system of a photovoltaic power station. The method comprises the following steps: a photovoltaic power station model is formed in an RTDS real-time simulation platform; performance tests are performed on the photovoltaic power station model; Testing the low voltage ride-through capability of the photovoltaic power station, testing the voltage / frequency response characteristics of the photovoltaic power station, testing the active power output characteristic of the photovoltaic power station, testing the active power / reactive power control ability of the photovoltaic power station, testing the islanding prevention protection characteristic of the photovoltaic power station, and characterizing the test result of the power quality test of the photovoltaic power station to obtain corresponding test eigenvalues; Each test eigenvalue is inputted into a pre-trained machine learning prediction model to predict and obtain a grid-connected monitoring evaluation score result of the photovoltaic power station. The implementation of the invention can score the advantages and disadvantages of the designed photovoltaicpower station model, thereby realizing the overall evaluation of the photovoltaic power station model.
Owner:INNER MONGOLIA POWER GRP
Layout, traffic control and transfer plan of one-way one-line mode intersection
InactiveCN108252169ASmooth transferSolve transfer problemsControlling traffic signalsRoadwaysTraffic capacityCrucial point
The invention relates to the field of traffic engineering, and discloses a layout, traffic control and transfer plan of a 'one way-one line' mode intersection in a public transport system. The layoutincludes the layout of transfer stations (8-station model), the layout of an entrance lane and an exit lane for buses, the layout of the entrance lanes and the exit lanes for straight running, left turn and right turn of social vehicles, the layout of a non-motor vehicle lane and the layout of a sidewalk. Traffic signal control is also called phase scheme, and the key point is to incorporate right-turn traffic into unified control. Based on the layout, a 4-phase control scheme is adopted, so that the aim of no conflict between dynamic timing and traffic flow can be fulfilled, namely, no mutualconflict exists when six traffic flows in one phase pass through the intersection. Moreover, no mutual conflict exists between pedestrians and right-turn traffic as well as between the pedestrians and non-motor vehicles not crossing a zebra line. The main feature of the transfer line is to transfer without zebra crossing, thereby saving the transfer time. The problem of inconvenience in transferat the intersection in the 'one way-one line' mode is solved, and the safety and traffic capacity are enhanced.
Owner:SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
New-energy power plant model error positioning method and device
InactiveCN107069808AGood effectPhysical concepts are clearSingle network parallel feeding arrangementsReactive power adjustment/elimination/compensationReduced modelNew energy
The invention relates to a new-energy power plant model error positioning method and device. The method comprises steps of: establishing an element carrier model of an equivalent external system according to the measured data of a new-energy grid-connected point, a feeder collection point and a dynamic reactive power compensation device; injecting the measured data into the element carrier model of the equivalent external system and creating a new-energy power plant model according to the model; simulating field disturbance to obtain the simulation data of a wind power plant and the grid-connected point of a PV power station under the disturbance; determining a deviation value according to the measured data and the simulation data, and calibrating the new-energy power plant model according to the deviation value in order to determine the position of a parameter error source of the new-energy power plant model. The new-energy power plant model error positioning method and device can accurately and completely position the errors of the wind power plant and the PV power station model, avoid errors of external system modeling, and greatly reduce modeling workload.
Owner:CHINA ELECTRIC POWER RES INST +3
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