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Method for dismantling arch bridge for protection
InactiveCN101265690AShort construction periodEnsure construction safetyBuilding repairsSocial benefitsReverse order
The invention provides a protective method for removing an arch bridge, which belongs to the technology field of bridge removal. The method aims to provide a protective bridge removal method with safety, high efficiency and no pollution. The technical points include: building up a new trestle, erecting a gantry crane, carrying out the bridge removal in a reverse order of the bridge building including bridge decking, coping, column, beam, arch rib and arch support in sequence. The removal stage of the arch rib especially includes removing by adopting methods of top-supporting under the arch, arch box transverse stop and horizontal restraining rope, which better solves the difficult problem of the protective bridge removal with safety, high efficiency and no pollution in a complex construction environment of guaranteeing under-arch navigation, high security level, short construction period and various unpredictable elements, manages to meet the design requirements of the removal safety factor in the protective bridge removal process and the limit control under various removal working conditions and guarantees the removal quality and the construction safety. The removal method has low cost and remarkable social benefit reflected in the direct economic analysis, which is a protective removal method of large-span bridges with safety, high efficiency and practicability.
Owner:CHINA TIESIJU CIVIL ENG GRP CO LTD +1
Project economics analysis tool
The present invention is applicable in the field of corporate finance, corporate capital investments, economics, math, risk analysis, simulation, decision analysis, and business statistics, and relates to the modeling and valuation of investment decisions under uncertainty and risk within all companies, allowing these firms to properly identify, assess, quantify, value, diversify, and hedge their corporate capital investment decisions and their associated risks
Owner:MUN JOHNATHAN
System for evaluating over and underbalanced drilling operations
InactiveUS20050192855A1Electric/magnetic detection for well-loggingAdvertisingSkin factorStatistical analysis
A method and a computer program for economic evaluation of completion methods for drilling a well. An extensive user interface is provided for inputting of reservoir data and parameters relating to a first completion method. A rigorous first skin factor is generated based on the reservoir data and first drilling parameters. An interface is preferably provided for entering cost data related to the first completion technique and a first total cost can be generated. Production data is optionally generated from the first skin factor. The production and cost data can then be combined to generate an economic analysis of the first completion technique. The process can be repeated for alternate completion techniques. Preferably, ranges can be entered for certain reservoir and / or cost variables. Multiple iterations can be performed on the ranges resulting in total cost and production ranges which can be combined to yield ranges of economic data for statistical analysis. This results in a user being able to choose the most advantageous completion method.
Owner:WEATHERFORD TECH HLDG LLC
Method for creating a linear programming model of an industrial process facility
ActiveUS20060184254A1Simplify the development processEliminate needSolidificationLiquefactionReference modelFirst principle
A method for creating a linear programming (LP) model of an industrial process facility is disclosed. The model may be used for interactively simulating and / or optimizing the operation of the facility to facilitate feedstock selection and / or other economic analyses. According to the inventive method, a first principles reference tool is used to create a non-linear reference model of the entire facility. Then, independent input variables and key output variables are specified, and initial values for the independent input variables are specified. Base case values for each key output variable are determined by running the non-linear reference model using the specified initial values for the independent input variables. Next, partial derivatives for each key output variable with respect to each independent input variable are determined. A matrix is constructed containing the base case values and partial derivatives. The matrix serves as the depiction of the industrial process facility in the final LP, which may also include prices, availabilities, and other external constraints.
Owner:EXXONMOBIL CHEM PAT INC
Method for creating a linear programming model of an industrial process facility
ActiveUS7257451B2Simplify the development processEliminate needSolidificationLiquefactionReference modelingProcess engineering
A method for creating a linear programming (LP) model of an industrial process facility is disclosed. The model may be used for interactively simulating and / or optimizing the operation of the facility to facilitate feedstock selection and / or other economic analyses. According to the inventive method, a first principles reference tool is used to create a non-linear reference model of the entire facility. Then, independent input variables and key output variables are specified, and initial values for the independent input variables are specified. Base case values for each key output variable are determined by running the non-linear reference model using the specified initial values for the independent input variables. Next, partial derivatives for each key output variable with respect to each independent input variable are determined. A matrix is constructed containing the base case values and partial derivatives. The matrix serves as the depiction of the industrial process facility in the final LP, which may also include prices, availabilities, and other external constraints.
Owner:EXXONMOBIL CHEM PAT INC
Distributed power source optimizing configuration method based on user-side economic indexes
ActiveCN104537435ASimple calculationComprehensive Economic Analysis MethodForecastingElectric power systemEstimation methods
The invention discloses a distributed power source optimizing configuration method based on user-side economic indexes and relates to the technical field of distributed power generation in electric systems. The method includes the steps that firstly, an optimization problem mathematical model is established with the minimum user cost as a target and in combination with operation constraint conditions of all units, and then benefits and costs of a user side and a power grid side are obtained; then, capacities and power of all distributed power sources are changed and then are led into the optimization model to be calculated, corresponding benefits and costs are obtained, and the benefits and costs are used as inputs and outputs to train a neural network, and therefore the optimum distributed power source capacity and power can be obtained. The method has the advantages that economic analysis and estimation methods for a distributed power source grid-connected system based on the user-side economic indexes are provided, and the optimum configuration from which users can obtain the greatest benefits is obtained; based on the method, economic estimation is also performed on a power supply side, and the optimizing problem of the system is simplified to be a linear programming problem; accordingly, computation is simplified, a relatively comprehensive and systematic economic analysis method is provided, so the method has engineering promotional value.
Owner:STATE GRID CORP OF CHINA +2
Household average distribution transform capacity configuration method based on user behaviors
ActiveCN105762792AGuaranteed safe operationReduce lossData processing applicationsLoad forecast in ac networkPower qualityMaterial resources
The invention discloses a household average distribution transform capacity configuration method based on user behaviors, comprising the steps of: S1, calculating resident loads to obtain a calculated load Pjs; S2, calculating a distribution transformer load rate beta, and based on the calculated load Pjs obtained in step S1, calculating a distribution transformer capacity S and a distribution economic operation range; S3, determining a user number n; S4, calculating a household average distribution transform capacity Sav based on S1,S2 and S3; and S5, performing economic analysis on the distribution transformer capacity. The method can guarantee power grid safe operation, reduce power grid loss, improve power supply reliability and electric energy quality, effectively reduce distribution transform requirements and construction investment, improve the use ratio of electric power company manpower and material resources, achieve the purposes of saving electricity and reducing power grid operation costs, and allow a power distribution network to satisfy maximum electricity demands of social economy development and living standard improvement.
Owner:STATE GRID CORP OF CHINA +1
Material level measuring device for steel ball coal mill and optimization and control method of powder-making process by bin type steel ball coal mill
InactiveCN101358869AReduce maintenanceQuality improvementComputer controlSimulator controlCoal dustSteel ball
The invention discloses an optimized controlling method of the powder producing process of a middle-storage type steel ball coal mill, comprising two aspects: the noise of the coal mill is detected through a noise sensor for assisting coal dust humidity, coal dust temperature, coal dust fineness or a material level which can substitute signal for detecting coal mill thereof; an advanced controlling of a powder producing system is taken as a center for realizing the optimization of the controlling parameters and the controlling goals of a material level loop, an exit temperature loop and an air output loop, so as to realize the running safety evaluation and the malfunction diagnosis, to realize the running economic analysis and operation suggestions, thereby realizing the optimized running of the powder producing system. The invention realizes the whole optimization to the powder producing system, is different from the prior controlling proposal or plan which only resolves part of the controlling of the powder producing system, at the same time adopts the advanced controlling for ensuring the continues, stable, safe and economic running of the powder producing system, and is extensively applied to the powder producing process of a middle-storage type steel ball coal mill.
Owner:西安合创安世科技有限公司
Method and system for controlling charge and discharge of high powered energy storage systems
InactiveUS20170091878A1Simple processMaximize economic benefitsProgramme controlFinanceEconomic benefitsBattery system
A modeling framework performs an economic analysis of a battery storage system to determine the economic feasibility with different business opportunities. The installed battery system can be utilized to optimize the energy flow between the wind farm and the utility. Several factors can be considered when performing the analysis, the most important being, how to determine the best optimal time to charge and discharge the battery to maximize economic benefit.
Owner:TEXAS TECH UNIV SYST
Dust-accumulation power-generation loss prediction-based auxiliary decision-making method of photovoltaic-plant cleaning time
InactiveCN107679672AImprove operational efficiencyForecastingInformation technology support systemLoss ratePredictive methods
The invention discloses a dust-accumulation power-generation-amount loss prediction-based auxiliary decision-making method of photovoltaic-plant cleaning time. The method comprises the following steps: 1) predicting a number N of days before a precipitation day with a significant cleaning effect; 2) estimating a dust-accumulation loss rate, in a case where a photovoltaic plant is not cleaned in the N days, and a dust-accumulation loss rate of the photovoltaic plant in the N days after cleaning of the next day; and 3) respectively calculating profit before and after cleaning according to estimation results, carrying out cleaning if the profit is greater than a cleaning cost, and not carrying out cleaning if the profit after cleaning is less than the cleaning cost. According to the method, aprediction method is applied to dust-accumulation power-generation-amount loss estimation of the photovoltaic plant, thus comparative analysis of whether cleaning economy exists is carried out, a technical method and an economic analysis method are fused, result accuracy thereof is higher, and economic benefits of the photovoltaic plant can be effectively increased.
Owner:MCC HUATIAN NANJING AUTOMATION ENG
A method for evaluate that comprehensive performance of a supercritical carbon dioxide cycle power generation system of a small lead-based reactor
ActiveCN109508851AImprove general performanceImprove calculation accuracyResourcesSystems designEngineering
A method for evaluate that comprehensive performance of a supercritical carbon dioxide cycle power generation system of a small lead-based reactor. Firstly, the basic operating parameters of the supercritical carbon dioxide (S-CO 2) cycle power generation system for lead-based reactor are determined. Subsequently, the modular design method is used to establish the sub-modules of turbomachinery work, heat transfer, heat exchanger pressure drop calculation, heat exchanger efficiency calculation, thermal analysis and economic analysis of power generation system. Then, the iterative calculation method is used to solve the heat exchanger pressure drop calculation and the thermodynamic analysis sub-module of the power generation system, and the thermal parameters of the power generation system and the unit power cost are obtained. Finally, based on multi-objective collaborative optimization, the thermal performance of power generation system is evaluated. Economy. This method can effectivelycomplete the new type of small-sized lead-based reactor S_Sco2 Design of Cycle Power Generation System, Thermodynamic, Heat Transfer and Economic Analysis Models for CO2 Cycle Power Generation Systems, Efficient System Heat Transfer-Economic performance analysis, solve the problem of automatic system design, complete the comprehensive performance comparison and guide the optimal S-CO2 Cycle PatternScreening.
Owner:XI AN JIAOTONG UNIV
Online power station main steam flow calculation method based on flow correction
ActiveCN104748807AImprove accuracyDynamic response in timeIndirect mass flowmetersCorrelation coefficientPower station
The invention relates to an online power station main steam flow calculation method based on flow correction. According to the method, an online main steam flow calculation model is corrected through a mass flow balance equation, the model finishes flow calibration on the basis of condensate water flow measured by a spray nozzle, under the different load working conditions, iteration method verifying calculation is utilized to obtain the main steam flow value, the Friuli Greig formula is corrected through the verified main steam flow measuring value, and finally an online main steam flow calculation model is built and obtained. By means of the method, the change tendency of the main steam flow can be reflected quickly, and meanwhile the high accuracy of the flow can be guaranteed. Considering the situation that sensor drift distortion occurs in a field adjusting level pressure measuring point, whether the adjusting level pressure value is distorted or not is judged according to the association coefficient, accordingly an adjusting level pressure soft measurement replacement solution is proposed, and the stability of an online main steam flow calculation module is guaranteed. The online main steam flow calculation strategy can be referred to by a power station and be used for conducting economic analysis.
Owner:SOUTHEAST UNIV +1
Fossil power generation unit coal blending scheme acquisition method
InactiveCN104992028ASatisfy securityProcess environmental protectionSpecial data processing applicationsMathematical modelUnit operation
The present invention discloses a fossil power generation unit coal blending scheme acquisition method. According to the method, a coal blending ratio is used as a target function; coal blending parameters obtained by calculating mixed coal coal quality parameters and calculating boiler checking heat are used as input quantities; safety and environmental friendliness of unit operation and practical indexes on site are used as constraint conditions; a coal blending ratio digital model which meets all the constraint conditions is established and obtained; and by means of economic analysis, experimental verification, introduction of auxiliary engine power consumption and the like, the coal blending ratio with the optimal economy is selected and an optimal and reliable coal blending scheme is obtained. According to the present invention, various coal blending schemes obtained by model calculation are subjected to economic analysis and the relatively optimal coal blending scheme is selected according to different constraint conditions; the application range of a boiler for coal types can be enlarged; under the condition of ensuring safe and environmental-friendly operation of a unit, flexibility of coal purchase is improved; and production cost of a power plant is effectively reduced.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Variable energy pricing in shortage conditions
InactiveUS20100161146A1Understand customer price sensitivityHigh sensitivityMechanical power/torque controlLevel controlEnergy supplyEngineering
This disclosure enables energy providers and users to establish variable pricing or maximum thresholds for individual components (aka appliances) or groups of components. The consumer (individual or business) defines a usage policy for each device or component which defines limits the consumer is willing to pay in a supply shortage. The usage policy also defines safety parameters as well as energy limiting capabilities of the appliance or component. Energy suppliers use this usage policy to determine which devices get managed or powered off in a shortage situation. With the detailed consumer supply and demand data available from this invention, energy providers may use economic analysis to better understand customer price sensitivity. This information will enable the provider to run simulations of different energy shortage scenarios.
Owner:SYMANTEC CORP +1
Method for detecting internal leakage of valve of thermodynamic system in power plant
InactiveCN102478445AReduce leakage flowReduce coal consumption for power supply operationFluid-tightness measurement using fluid/vacuumPower stationEngineering
The invention relates to a method for detecting internal leakage of a valve of a thermodynamic system in a power plant. The method comprises the following steps of: measuring outer wall temperatures of pipe segments in front of and at the back of the valve and ambient temperatures; calculating to obtain quantities of heat emission of the pipe; calculating to obtain flow velocity and flow rate of a fluid inside the pipe; and performing quantitative economic analysis on the flow rate of the fluid inside the pipe. When the leakage of working medium of the valve occurs, the pipe wall temperature rises due to heat emission. The heat transfer process tends to be stable after a certain time period if the leakage of the valve keeps unchanged, and the heat emission and the pipe wall temperatures maintain a certain value. When the calculation control volume used is short enough, the heat transfer quantities Q4 and Q5 in the longitudinal direction of the pipe are minimal and can be neglected in calculation. As a result, the heat emission of the pipe wall and the heat emission of the heat-insulating layer are close to the heat transfer of a single-layer homogenous cylindrical wall. The detection method is significant in determining inspection and repair according to the running state of the valve in the power plant, reducing internal leakage of working media of the valve in the power plant, reducing power and coal consumptions during operation and increasing operating economy.
Owner:EAST CHINA ELECTRIC POWER TEST & RES INST +1
Outlier detection method based on clustering
InactiveCN105512206AEfficient determinationEfficient and accurate detectionRelational databasesSpecial data processing applicationsCluster algorithmData set
The invention discloses an outlier detection method based on clustering. The outlier detection method comprises that a data set is obtained, k class clusters are calculated by means of an improved k_means clustering algorithm, the k class clusters are divided into a big class cluster set BC and a small class cluster set SC, outlier factors of data objects are calculated based on the big-small class cluster method and then are collected to form an outlier factor sequence, and outlier data is determined based on the outlier factor sequence. The outlier detection method is advantaged in that outlier data hidden in a lot of data sets can be effectively discovered, the outlier degree of each data object is determined, the outlier detection method is accurate and efficient in detection, and can be widely applied to fields of finance, economic analysis, electronic communication, modern logistics and the like.
Owner:HOHAI UNIV
Preparation method of fiber and cold patch asphalt mixture
InactiveCN106431088AGood low temperature crack resistanceImprove water stabilityPolyesterClay minerals
The invention provides a preparation method of a fiber and cold patch asphalt mixture. The fiber and cold patch asphalt mixture is prepared from the following components in percentage by mass: 0.1 percent to 0.5 percent of fiber, 3 percent to 8 percent of cold patch asphalt, 3 percent to 5 percent of filling and the balance of an aggregate material. The fibers comprise polyester fibers, cellulose fibers and the like. The cold patch asphalt component is prepared from asphalt, a diluting agent and a clay mineral material. The clay mineral material comprises bentonite, kaolin, attapulgite, diatomite and the like. According to the cold patch asphalt mixture prepared by the invention, pavement performance, including Marshall stability, high-temperature stability, low-temperature crack resistance, water stability and the like, is remarkably improved. Technical and economic analysis shows that the prepared fiber and cold patch asphalt mixture has obvious economic benefits and has a very good application prospect.
Owner:SOUTHEAST UNIV
Method and apparatus for providing economic analysis of power generation and distribution
ActiveCN1737838APower network operation systems integrationEmergency protective circuit arrangementsPower stationPower factor
A system for generating updated reactive capability curves of a generator operates the generator at a number of operating load levels and at a number of different power factors to collect data regarding the real and reactive power generated at each of the various operating load levels and power factors. Subsequently, the system analyzes the collected data to determine an actual reactive capability curve of the generator. The system also provides generator health monitoring and identifies changes and trends in the capability curves of the generator. The updated reactive capability curves may be used by an economic dispatch program in determining optimum MW and MVAR setpoints for the generator.
Owner:EMERSON PROCESS MANAGEMENT LLLP
Industrial-business-information analysis report generation method and system
InactiveCN106126674AError-proneSolve the repeatabilityStructured data retrievalSpecial data processing applicationsSpatial correlationInformation analysis
Owner:TAIHUA WISDOM IND GRP CO LTD
Power plant thermal performance analysis and optimization system
ActiveCN112200433ARaise the level of performanceGuarantee authenticityTechnology managementResourcesData displayAnalytic model
The invention provides a power plant thermal performance analysis and optimization system. The thermal performance analysis and optimization system comprises a model management and rule management module, an index calculation and benchmarking module, a measurement data display and analysis module, a performance online analysis module, a performance offline analysis module, an operation and maintenance decision support module, and a trend early warning and fault diagnosis module, wherein the performance online analysis module is used for performing comparative analysis on different data types of a same measuring point by utilizing a comparison table, the data types comprise a measured value, a verification value and an expected value, a comparison result comprises an absolute deviation anda relative deviation, and a large deviation can be identified by colors. According to the system, a thermodynamic model is taken as a core, a performance analysis model is established according to equipment characteristics and system logic, economic analysis, diagnosis and prediction of equipment and the system are performed by utilizing real-time and historical operation data and simulation dataof the thermodynamic model, and decision support for operation mode and technical improvement is provided for owners. Finally, a power plant, a unit and equipment are helped to be maintained at a highperformance level.
Owner:华电福新广州能源有限公司
Three-dimensional evaluation method for lightning protection performance of power transmission lines based on lightning strike density statistics
InactiveCN101988940AAccurate evaluationMeet the needs of lightning protection transformationElectrical testingLightning strikeRanking
The invention provides a three-dimensional evaluation method for lightning protection performance of power transmission lines based on lightning strike density statistics, which comprises the following steps: carrying out the lightning strike density statistics on ground; performing lightning protection performance calculation on the power transmission lines; conducting investment economic analysis on the line reconstruction; combining the lightning strike density, the lightning protection performance with the investment conditions of the different line reconstruction for each section to perform priority ranking of the reconstruction; and finally forming a strategy for the lightening protection reconstruction of the power transmission line. In the three-dimensional evaluation method for the lightning protection performance of the power transmission lines based on the lightning strike density statistics provided by the invention, the lighting protection performance of the power transmission lines can be exactly evaluated, and the requirements on the reconstruction of the lightning protection on the lines with the different voltage classes of power grid enterprises to can be met.
Owner:EAST CHINA ELECTRIC POWER TEST & RES INST
Three-winding transformer design method suitable for 35kV distribution construction
ActiveCN103310963AReduce lossLoss reachedInductances/transformers/magnets manufactureDistribution transformerCurrent distribution
The invention provides a three-winding transformer design method suitable for 35kV distribution construction. The method comprises the steps: (1) according to the layout scheme of a 35kV distribution transformer substation, determining 0.4kV side capacity; (2) setting the capacity of a transformer, and designing the body of the three-winding transformer; (3) carrying out material selection for the three-winding transformer; (4) calculating the operation loss of the three-winding transformer; (5) carrying out economic analysis on the power distribution station. The three-winding transformer design method suitable for 35kV distribution construction, provided by the invention, aims at the current distribution construction of 35kV transformer substations in remote and border areas, a main transformer of each 35kV transformer substation mainly adopts a 35 / 10 / 0.4kV three-winding transformer, the 0.4kV side is configured with proper capacity to be used as a power supply for loads of the substation and surrounding loads of the transformer substation, the economical efficiency is analyzed in the two aspects of cost saving and loss reduction, meanwhile, an on-load tap changer is equipped after selectivity is considered, and the economical operation of the transformer is realized.
Owner:STATE GRID CORP OF CHINA +2
Enterprise operating rate obtaining method based on electric energy service management platform
InactiveCN105096060ARealization of operating rate calculationResourcesInformation technology support systemPower gridSimulation
The invention provides an enterprise operating rate obtaining method based on electric energy service management platform, which is characterized by following steps: setting a using threshold of electric power for various enterprises based on data concerning their historical use of electric power; obtaining data concerning the use of electric power of enterprises from the electric energy service management platform and determining the operating condition of the enterprises based on their electric power using condition; performing cluster partition to enterprises and calculating the operating rate of enterprises in different sectors. The method effectively calculates the operating rate of enterprises and can be applied to evaluate the running state of enterprises and their situation for employment. By analyzing the power using condition of enterprises, the method lays an important basis for government macroscopic economic analysis and power grid scheduling.
Owner:CHINA ELECTRIC POWER RES INST +2
System and method for providing economic analyses
A method and system for performing economic analysis that includes the organization and structure of the economic models, organization and presentation of the content associated with the economic models, the organization and structure of the software models used to construct electronic versions of the economic models and content, the idea of using economic analysis as the basis for interactivity and communication with users, sufficient detail in the economic and software models to accurately represent the real world processes they model, a method for changing assumptions and conducting “what if” analysis, a method for providing automated updates of assumptions, a method allowing users to “lock-in” assumption values, a group of tools allowing users to create, delete, and otherwise manage their proprietary economic cases, administrative management tools, an instruction system, and other features.
Owner:MOGENSEN STEVEN ALLEN
Economic analysis of grid infrastructure
Owner:GENERAL ELECTRIC CO
Cartoon analysis method for geographic distribution and time trend of price of commodity
The invention relates to a cartoon analysis method for the geographic distribution and the time trend of the price of a commodity in the field of economic analysis. The method comprises the following steps: (1), manufacturing a background diagram with the geographical position of each market; (2), dividing the price of a designated commodity in each market into a plurality of sections; (3), setting the color value of each price section; (4), drawing a commodity price distribution diagram: drawing a colored spot distribution diagram; marking one spot at the geographical position of each market in the background diagram; fully filling the spots of the color values according to the color values set by the price section of each market, wherein the colored spots can also be expanded into the polygon of a representative area of the market and are connected with the polygon of each adjacent market in a seamless way, and a colored cloud-shaped distribution diagram is drawn; and (5), manufacturing a commodity price dynamic distribution cartoon, drawing a plurality of distribution diagrams according to different time points and displaying each diagram continuously according to a time sequence at a designated speed to form the cartoon. The invention provides a vivid and dynamic commodity price analysis technology, can guide the production and the sale of commodities, improves a production plan, promotes the commodity circulation and meets the consumption requirement.
Owner:BEIJING HUAXIASHENRONG INFORMATION TECH
Mining subsiding land environmental modification auxiliary decision information obtaining method
A mining subsiding land environmental modification auxiliary decision information obtaining method comprises the following steps of obtaining, converting and superposing the mining subsiding land spatial data; butting the mine reserve data and directly obtaining the goaf data formed by the to-be-used reserves; carrying out the ultrasonic water depth detection on a sedimentation pools zone, real-timely acquiring the water weekly GNSS sedimentation automatic monitoring data and automatically superposing the spatial network points; carrying out the multilayer data analysis on the mining subsiding land data along a time axis; based on the mining subsiding land damage current situation and trend, obtaining the environmental modification auxiliary decision information. According to the present invention, by acquiring the basic data, such as the spatial dynamic data of the mining subsiding land, the mining data, etc., a mining subsiding land multi-dimension monitoring and prediction database is established, and a single-model uniform parameter conversion algorithm is adopted, thereby realizing the mining subsiding land environmental governance and land utilization economic analysis on the basis of one mathematical model, and providing the decision bases at the aspects of fund, technology and the like for the environmental governance of a mining subsiding area and the land recovery and utilization.
Owner:BEIJING LANZUN TECH
Physical distribution geographical information system
InactiveCN101515345ACombination of logistics and geographic information systemTightly boundLogisticsData setSimulation
The invention relates to a physical distribution geographical information system which comprises various physical distribution models, physical distribution process flow, physical distribution scene and a physical distribution economic analysis special subject diagram; on the basis of network dataset, the physical distribution models can obtain optimized results on the actual path and show the results; on the basis of network data acquisition, the physical distribution process flow can make dynamic simulation on the actual path; based on vector data and image data, a plurality of typical physical distribution scenes can be shown on a computer screen; on the basis of physical distribution economic data, ten thousand years of physical distribution economic data can be displayed by the physical distribution economic analysis special subject diagram to the user in a form of diagram. The physical distribution process flow and the physical distribution models are set up on the generated network dataset. The invention can be applied to the teaching of the interrelated specialized field of physical distribution, the training and the like, leads teaching and studying to be more visualized and is beneficial to better acquiring and studying physical distribution geographical knowledge by the student.
Owner:SHANGHAI MARITIME UNIVERSITY
Method for establishing desulfurization system operation condition database
ActiveCN110033141AAvoid misleadingFully excavatedDigital data information retrievalForecastingComputer scienceData library
The invention discloses a method for establishing a desulfurization system operation condition database, and the method comprises the steps: step 1, importing historical operation data of a desulfurization system, carrying out the data processing of the historical operation data, and removing abnormal data; step 2, analyzing the health data retained in the step 1 by adopting a principal componentanalysis method to obtain new characteristic quantities; step 3, performing economic analysis on the desulfurization system, and proposing an economic evaluation index of the desulfurization system; step 4, determining the number of clustering clusters by using an elbow rule; step 5, clustering the new characteristic quantities obtained in the step 2 by using a fuzzy C-means clustering method, andobtaining an economic optimal point in each class by combining the economic evaluation index in the step 3; step 6, carrying out data processing of the steps 1 to 6 on the real-time operation data ofthe desulfurization system, obtaining real-time operation data of the desulfurization system, clustering the real-time operation data into an existing class obtained in the step 5, and indicating theeconomic optimal point of the real-time operation data in the class where the real-time operation data is located as the optimal working condition point.
Owner:DATANG ENVIRONMENT IND GRP
Resource development method suitable for polymer flooding
ActiveCN109209312ASlow down the declineEnhanced overall recoveryFluid removalResource developmentResidual oil
The invention relates to a resource development method suitable for polymer flooding, and belongs to the technical field of chemical flooding oil development. The oil reservoir condition, permeabilitydifference, thickness, well group condition and residual oil condition are taken into integrated consideration to determine an oilfield block; and resources of different reserve units are ordered according to the oil price by combining well pattern manners, value simulation and economic analysis, and a polymer flooding reserve resource corresponding to the present oil price is determined. The polymer flooding is used fully in the situation of low oil price to further improve the recovery efficiency and reduce successive decrease of maturing fields, the low-cost polymer flooding resource wellgroup screening standard is reached, and potentials of the polymer flooding resource are authenticated in the technical and economical aspects by means of an empirical formula, value simulation and economic analysis, and benefit of polymer flooding is developed.
Owner:CHINA PETROLEUM & CHEM CORP +1
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