178 results about "Economic evaluation" patented technology

A hybrid evolutionary algorithm (“HEA”) technique is described for automatically calculating well and drainage locations in a field. The technique includes planning a set of wells on a static reservoir model using an automated well planner tool that designs realistic wells that satisfy drilling and construction constraints. A subset of these locations is then selected based on dynamic flow simulation using a cost function that maximizes recovery or economic benefit. In particular, a large population of candidate targets, drain holes and trajectories is initially created using fast calculation analysis tools of cost and value, and as the workflow proceeds, the population size is reduced in each successive operation, thereby facilitating use of increasingly sophisticated calculation analysis tools for economic valuation of the reservoir while reducing overall time required to obtain the result. In the final operation, only a small number of full reservoir simulations are required for the most promising FDPs.

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.

The present invention discloses a comprehensive evaluation method of a micro-grid. The method is characterized by taking an economic evaluation index of the micro-grid, a carbon emission evaluation index of the micro-grid, a reliability evaluation index of the micro-grid and a security evaluation index of the micro-grid as a comprehensive evaluation index of the micro-grid, wherein the economic evaluation G1 (X) of the micro-grid and the carbon emission evaluation G2(X) of the micro-grid are used as the objective functions of the overall comprehensive evaluation max G(X) of the micro-grid, and the reliability evaluation of the micro-grid and the security evaluation of the micro-grid are used as the constraint conditions of the overall comprehensive evaluation max G(X) of the micro-grid, so that a multi-target evaluate model of the investment benefits of the micro-grid is obtained. According to the present invention, the micro-grid is evaluated comprehensively at various aspects of the micro-grid, such as the economy, the reliability, the carbon emission, etc., so that the automation decision is realized, the calculation is simple and convenient, the operability is strong, and the obtained data is more accurate. The comprehensive evaluation method of the micro-grid of the present invention also provides theoretical bases for the technical scheme comparison of a micro-grid engineering and the comprehensive evaluation of the micro-grid.

The invention provides trap automatic evaluation system and method based oil and gas accumulation process simulation; the system comprises a gathering unit searching module, a gathering unit information identification module, a gathering unit risk evaluation module, an economic evaluation module, a comprehensive evaluation module and a report generation module which are sequentially connected. The method comprises the following steps: firstly, inputting result data obtained by oil and gas accumulation simulation to a trap evaluation system; searching and judging an oil and gas gathering unit in an exploration area based on the oil and gas accumulation dynamic simulation result; and finally, carrying out geologic risk evaluation, economic evaluation, comprehensive evaluation and ordering on goodness and badness to the oil and gas gathering unit. In the invention, by fully utilizing various result data generated by oil and gas accumulation process simulation, a good data interface is provided for the trap evaluation, brand-new trap automatic evaluation concept, method and technology system are formed, and the effectiveness and reliability for trap evaluation are improved.

The invention discloses an electric power engineering design review and technical economic evaluation information system. The electric power engineering design review and technical economic evaluation information system comprises a project review plan management module, a project review module, a province infrastructure project information database construction module, a design quality management module, an external user interaction management module, a main network engineering cost compilation system module, a cost analysis management module and a message management module. The system integrates demands of actual engineering project design review and technical economic management works, makes engineering project design review and technical economic management works have great improvement in standardization, unification, normalization and refinement, greatly improves an intensive management level, effectively and practically improves efficiency of engineering project design review and technical economic management works and brings about substantial economic and social benefits.

The invention discloses an optimal configuration method for a distributed energy storage system. The method comprises the following steps: acquiring historical data and classifying the historical data so as to determine a cluster number and an initial clustering center; according to the cluster number and the initial clustering center, carrying out clustering to obtain a clustering result; according to the clustering result, generating a plurality of typical days; carrying out economic evaluation on a configuration scheme of the distributed energy storage system according to the typical days and carrying out optimization by a genetic algorithm so as to generate the optimal configuration. The method disclosed by the invention comprehensively considers installation cost of the energy storage system, operation cost of a power grid, interest arbitrage earnings of the energy storage system and the like; the position and capacity of the energy storage system in a power distribution network can be subjected to optimal configuration; the economic benefits of the whole society are increased.

The invention provides a low-voltage platform region intelligent management method based on a forward-backward substitution algorithm. The low-voltage platform region intelligent management method comprises the following steps: 1, determining a platform region with a low-voltage phenomenon; 2, collecting original data; 3, drawing a picture and setting electric element parameters; 4, carrying out load flow calculation; 5, analyzing low-voltage factors; and 6, carrying out low-voltage management and economic evaluation. According to the low-voltage platform region intelligent management method, a position with the low-voltage phenomenon in the platform region is found by algorithm calculation according to front end voltage and tail end voltage of the platform region; one set of intelligent management measures with best economical efficiency can be generated by combining an actual low-voltage phenomenon solving measure; and effective helps for platform region analysis and project approval are provided for field personnel.

The invention relates to a system and method for monitoring and managing the energy efficiency of buildings, comprising data-acquisition devices, a communication network, a server that stores and processes the information, and a procedure for optimising energy consumption forecasts and economic evaluation of improvement alternatives. The monitoring and management method comprises the following steps: measuring; transmitting, receiving and transferring data; and processing, storing and interfacing with the user, wherein the interface with the user comprises three main modules, namely the alarm module, the monitoring module and the investment options module. In particular, the investment options module is for generating investment recommendations on the basis of improvement alternatives in terms of energy and/or services efficiency, with economic evaluations of the impact and profitability of the implementation of any of the proposed improvement alternatives.

The invention discloses a coordinated optimization control and economic evaluation method for a wind power consumption comprehensive energy system, and belongs to the technical field of wind power. The comprehensive energy system consists of a wind power plant, an energy storage system and a heat accumulation type electric boiler. Due to the fact that the comprehensive energy system has differenttime scales, and the energy storage system is used for coordinating the combined operation of the heat accumulation type electric boiler so as to consume wind abandoning for supplying heat for residents. A wind power-energy storage system and a wind power-heat accumulation type electric boiler are taken as game players, the factors such as the energy storage system, the heat accumulation type electric boiler, various benefits of the wind power plant and cost are taken into account comprehensively, an energy storage coordinated heat accumulation type electric boiler consumption wind power windabandoning economic evaluation model based on a game theory is established, and the model is solved by using particle swarm optimization. The optimal operating power of the energy storage system and the optimal operating power of the heat accumulation type electric boiler at every moment are obtained while the maximum overall economic benefit of the comprehensive energy system is guaranteed, and the wind abandoning consumption capacity of the heat accumulation type electric boiler is further promoted.

The invention relates to an HAFD (Horizontal-well Acid Fracturing) segmented optimization method and system. The optimization method comprises the following optimization flow: simulating a horizontal well segmented matrix acidization, predicting acidizing capacity for forming the horizontal well segmented matrix, predicting the capacity of the segmented acid fracturing horizontal well, optimizing segmented acidizing and acid fracturing for the horizontal well, realizing digitalization of well logging drawings, and combining the segmented matrix acidizing technology with the acid fracturing technology. The optimization system comprises a basic data subsystem, a log data subsystem, a well bore configuration definition subsystem, an acidizing simulation subsystem and a prediction evaluation subsystem. The optimization method disclosed by the invention is ingenious and reasonable in conception, simple in steps, and capable of avoiding the problems that the carbonatite reaction kinetic model is complicated and difficult to apply and estimating the acid absorption content of the stratum segment more accurately. The optimization system disclosed by the invention is simple and reasonable in structure, and capable of realizing integrated design process of the parameter design of the acidizing and acid fracturing technologies, effect prediction and economic evaluation, and brings convenience for field engineers to carry out optimization design on the acidizing scheme.

The present invention relates to a power transformer asset management device and a method thereof, the device according to the present invention including: a full cycle database managing full cycle data of a power transformer; a physical performance evaluation unit performing physical performance evaluation that calculates a health index by analyzing and weighting life information, a failure ratio, operation history, and status information of a preventive diagnosis system from the full cycle data; a risk evaluation unit performing risk evaluation by generating a risk matrix using the physical performance evaluation result; an economic evaluation unit performing economic evaluation by evaluating costs over a full cycle of the power transformer; and an asset management unit establishing an investment plan for replacing the power transformer according to a maintenance priority of the power transformer determined using the physical performance evaluation result, the risk evaluation result, and the economic evaluation result.

The invention provides a large power grid construction economic evaluation method, which comprises the following steps that: a two-stage evaluation system is built; proper evaluation indexes are selected; the evaluation is represented by comments in different degrees by fuzzy languages in fuzzy comprehensive evaluation; then, factors which are not easy to quantify are quantified by the fuzzy relationship synthesis principle; and an evaluated object is comprehensively evaluated from a plurality of factors. Particularly, evaluation indexes are firstly determined; then, the membership degree and the weight of the indexes are calculated; a fuzzy evaluation matrix and a weight vector are subjected to synthesis calculation; and finally, a fuzzy comprehensive evaluation result is obtained. The evaluation result which is not easy to quantify is quantified, and the evaluation result is simple and visual. The method provided by the invention has the advantages that a mathematic model is simple; the calculation is simple and convenient; the evaluation effect on multi-factor and multilayer complicated problems is better; and the method is applicable to the large power grid construction economic evaluation study.

The invention relates to a differentiated lightning protection method for power transmission lines. The differentiated lightning protection method includes: collecting and making statistics on information of a power transmission line; performing lightning protection computation and lightning protection performance risk assessment for every base tower; specifically making lightning protecting measures according to the results of the risk assessment, risk determining factors and characters of lightning protection measures and combining with the line operation situations; and performing safety risk assessment again and economic evaluation for the made lightning protection measures. Differences of the power transmission line in time and space are fully taken into consideration, various factors and characters like thunder and lightning activities and structures of the power transmission line and the topography are comprehensively taken into consideration, lightning protection computation for the power transmission line for every base tower is performed by utilizing thunder and lightning parameters obtained by statistic analysis of data monitored by a thunder and lightning monitoring system, degrees of corresponding lightning protection performance for base towers in one power transmission line are reflected, a power transmission line designing and operating department is effectively assisted to improve the lightning protection performance of the power transmission line by taking the lightning protection measures more meticulously in a targeted manner, and a power grid can be managed in a more elaborate manner.

The invention discloses a dispatching method and a dispatching device for optimizing units in a wind power station. The dispatching method comprises the steps of: S1, establishing a target function; S2, setting constraint conditions of the target function; and S3, executing optimization algorithms which comprise a particle swarm optimization algorithm and a genetic and particle swarm optimization algorithm. According to the dispatching method and the dispatching device for optimizing the units in the wind power station, by the optimal power flow computation, active power and reactive power outputs of the units in the wind power station are optimized, so that not only can internal loss of the wind power station be minimized, the service life of a wind turbine generator system is prolonged, and the integral wind power station economically operates, but also internal power loss can be analyzed to provide basis for economic evaluation of the wind power station by researching power distribution in the wind power station.

The present invention belongs to the field of energy technology design and particularly relates to a multi-energy technology quantitative screening method. The multi-energy technology quantitative screening method comprises the following steps of: (1) establishing a model and a database; (2) carrying out load analysis; (3) carrying out technology quantitative screening; and (4) carrying out technology integration and outputting a technical scheme. The multi-energy technology quantitative screening method disclosed by the present invention has the following beneficial effects that (1) the technology integration degree is high and technologies in the fields of power generation, air conditioning refrigeration, heating and the like are covered; (2) single technology design and multi-technology integration optimal design can be realized; (3) equipment selection, energy consumption analysis, investment estimation, economic evaluation and the like of a technology integration system can be realized; and (4) performance evaluation of technology integration on two aspects of economy and the environment can be realized.

The embodiment of the invention provides a method and device for predicting the recoverable reserve of tight oil in a to-be-valuated region. According to the method provided by the embodiment of the invention, the single-well recoverable reserve of the tight oil is reasonably predicted by utilizing production situations of producing wells already put into operation in the adjacent regions of the to-be-valuated region and by combining with the change of geological factors simultaneously and main controlling factors of the to-be-valuated region are optimally selected by utilizing correlation analysis to ensure that the inapplicability problem of using same geological parameters to predict the single-well EUR (Estimated Ultimate Recovery) of the tight oil in previous geological prediction models is avoided; moreover, the coefficients of the geological parameters in the EUR prediction models are confirmed by utilizing a multiple regression method to ensure that the defect of large error of artificially and subjectively confirming the similarity coefficient is overcome; and therefore, the method has the advantages that the evaluation result is more accurate and more reliable and basis is provided for the later economic evaluation of the tight oil block.

The invention discloses an economic evaluation method of modification effects of a heat supply technology of a pure condensing steam turbine unit. The economic evaluation method comprises the steps that firstly, a certain specific electric operation load of a typical unit is selected; then, relative operation economic benefits generated when the heat supply working condition and the pure condensing working condition are compared under the condition that the steam turbine unit runs under the same electric load are used as main economic evaluation indexes for technical modification. When the relative operation economic benefits are calculated, changing of the technical indexes such as the power generation heat consumption rate is considered in the provided algorithm, and the influences of the boundary parameters such as the heat supply price and the standard coal price are also considered in the provided algorithm. The economic evaluation method can be implemented easily on site, the algorithm is scientific, and the economic evaluation method can provide effective support in determining the feasibility of modification of the heat supply technology at the modification project demonstration stage of the heat supply technology of the pure condensing steam turbine unit.

The invention relates to a distribution network distributed energy storage economic evaluation method and system based on operation strategy, which is characterized by comprising the following steps:1) according to a distribution system to be evaluated and an access scheme of the energy storage system, a simulation model is built, and relevant system parameters are input to obtain the operation parameters of the distribution system after being connected to the energy storage system; 2) Calculate the annual rate of return of the energy storage system according to the obtained operation parameters, the pre-constructed economic evaluation index and the economic operation model of the distributed energy storage system, and evaluate the economy of the distributed energy storage system of the distribution system. The economic operation model of distributed energy storage is established, which takes into account the actual situation of the electricity price in distribution system and distributed generation output. The economic evaluation results are more in line with the objective reality, and the calculation is simple, so it can be widely used in the economic evaluation of distributed energy storage in distribution network.

The invention discloses a city smart power grid planning method on the basis of land conversion risk. The city smart power grid planning method includes acquiring an electronic map of an area to be planned, rasterizing the electronic map to obtain a grid map, and endowing current land use information to each grid as attribute information; subjecting each grid to simulative prediction on the basis of the land conversion risk; manufacturing a load density curve of different types of land; calculating a first total load prediction value by means of the simulative prediction results of the land conversion risk and the load density curve; calculating a second total load prediction value of the area to be planned by a weighting method; comparing the first total load prediction value and the second total load prediction value, and determining the optimal planning scheme of the power grid according to planning target functions of a city power distribution grid when comparison results meet the setting conditions. The city smart power grid planning method solves the problem that the load prediction results cannot provide effective data for economic evaluation of the power grid planning scheme.

The present invention discloses a distributed power supply access power distribution network planning method. The method comprises: establishing the power distribution network extension planning model of a distributed power supply, wherein the power distribution network extension planning model is a mathematic model for the line operation cost, the distributed power supply construction cost and the purchasing electricity cost reduced through the reduction of the access of the distributed power supply, employing a genetic algorithm for solution, employing the adaptive genetic algorithm for planning of the distributed power supply, employing the genetic algorithm for extension planning of the network aiming at the individual of distributed power supply capacity and position generated by each generation in the genetic algorithm, adding the influence of the distributed power supply, and repairing non-feasible solution generated by the intersection and mutation operation in the genetic algorithm, and performing economic evaluation of the integrated planning result of the distributed power supply and the network. According to the actual condition of the distribution network structure and the capacity and the distribution position of the distributed power supply, and the problems of the planning of the distribution network, the site selection and the constant volume of the transformer station and the site selection of the distributed power supply are solved through adoption of the appropriate algorithm.

The invention discloses an environmental and economic performance comprehensive evaluation method for thermal power plant typical environmental protection engineering and relates to evaluation of environmental and economic performance of thermal power plant typical pollutant control units. The problem that comprehensive evaluation of environmental and economic performance of existing thermal power plant typical pollutant control units is not sufficient is solved. The method includes the steps that firstly, an environmental and economic performance index system of the thermal power plant typical environmental protection engineering is established, and membership functions are established for evaluation indexes; weights of the evaluation indexes in all levels of evaluation are determined according to an actual running parameter and the technical requirement; a fuzzy mathematics comprehensive evaluation method is utilized, a large membership principle is adopted, environmental evaluation and economic evaluation are performed on the environmental protection engineering, and finally the environmental and economic performance of the environmental protection engineering is comprehensively evaluated. The method has universal applicability and operability, the result of the method can reflect advantages and disadvantages of the environmental and economic performance of the existing pollutant control units, the specific problems of the pollutant control units and reasons causing the problems are indicated, and the energy conservation and emission reduction development direction of a thermal power plant is guided.

The invention relates to an energy storage system capacity allocation method taking wind limiting characteristic and economy into consideration. The method is characterized in that the wind limiting characteristic is analyzed based on the measured wind limiting power of a wind farm first, and on the basis, an energy storage system multi-scenario regulation control strategy is put forward and a corresponding scenario division principle is formulated; and then, an energy storage system capacity allocation method taking both wind limiting characteristic and economy into consideration is put forward by constructing an economic evaluation model taking into consideration the power benefit, environmental benefit, investment cost, maintenance fee and other factors of an energy storage system. Important reference is provided for capacity allocation of a concentrated charging and discharging large-scale energy storage system.

The invention discloses a heat-work conversion and dispatching optimization decision-making assisting system and a heat-work conversion and dispatching optimization decision-making assisting method for a complementary DMG (distributed multi-generation) system. The heat-work conversion and dispatching optimization decision-making assisting system comprises a fuel characteristic parameter module, a combustion adjustment experimental module, a reference pattern module, a heat balance and consumption quantity computing module, a combustion condition adjustment and management module, a heat-work conversion management module, a variable-working-condition signal transmission module, a full-working-condition operation parameter management module, a district cooling network circulation mode module, an energy efficiency and environmental benefit evaluation module and a dispatching optimization and decision-making assisting management module. The heat-work conversion and dispatching optimization decision-making assisting system and the heat-work conversion and dispatching optimization decision-making assisting method have the advantages that district cooling network circulation match is achieved flexibly for a multi-heat-source system different in temperature to construct the complementary DMG system with multi-energy-source input and multi-product output, and high flexibility and advancement are achieved; an advanced system for process engineering is applied to production device design, steady-state simulation and optimization, sensitivity analysis and economic evaluation of a whole process of the complementary DMG system, so that accurate and timely dispatching optimization and decision-making assisting are achieved.

The invention relates to a rapid economic evaluation method of ionic adsorption rare earth ore. The method comprises the following steps: carrying out geological exploration to collect geological survey borehole data and borehole sampling and testing data of a target mine area and establishing an ore deposit borehole database; performing 3D ore body modeling by using the borehole data and performing grade interpolation by using a kriging method to obtain an ore deposit ore body model; performing price sensitivity analysis by acquiring a large quantity of mineral products market data and establishing a mineral product price-boundary grade calculating model; using the model to determining the boundary grade of a specific ore deposit under different market prices and then using the boundary grade to constrain the ore deposit ore body model and to delineate an ore body range, and then performing reserves calculation. According to the change of the market price and the operating cost of the enterprise, the profit and loss balance point is determined according to the basic geologic characteristics of the weathering crust and the distribution of the rare earth elements, and the boundary grade and the industrial grade are determined by comprehensively considering the profit margin and the like. further, computer technology is used for delineating the ore bodies and to calculate the reserves of resources, and providing the basis for the reasonable determination of a mining plan.

The invention discloses a voltage transformer economic capacity selection method based on economic operation and investment recovery. The method mainly comprises the following steps: 1, in a step of economic capacity method-based selection, optimal load rates [beta]opt and economic capacity Se based on consideration for voltage transformer economic operation and investment recovery are calculated;2, in a step of voltage transformer economic operation interval testing, an economic operation interval of a voltage transformer is analyzed, and an economic operation interval test is conducted on the initially selected voltage transformer under an actual operating load; 3 in a step of voltage transformer economic evaluation, a TOC total owning cost method is adopted to obtain all total owning cost values, economic evaluation of the voltage transformer is performed, and whether an economic evaluation result is good is tested. Via the method disclosed in the invention, actual parameters of the voltage transformer are accurately used to ensure the true validity of subsequent calculation and determination; based on the economic evaluation of the TOC total owning cost during a whole life cycle of the voltage transformer, a problem that difference in conclusions is caused due to neglect of part of the cost or short periods in the economic evaluation can be prevented.

The invention discloses a new energy utilization benefit evaluation method for villages without electricity, which belongs to the field of power grid engineering benefit management. Including: (1) In accordance with the selection principles of evaluation indicators, refer to the economic evaluation indicators and specifications of related power construction projects used for power construction in remote areas without electricity, from five major aspects: technology, economy, society, environment and project sustainability Construct the comprehensive benefit evaluation index system of power supply mode in remote areas without electricity, (2) On the basis of the constructed comprehensive benefit evaluation index system of electric power construction in remote areas without electricity, establish the EW-FSEM evaluation model, and select the EW-FSEM algorithm to evaluate the new Alternative schemes for energy utilization are comprehensively evaluated to achieve the best scheme; the invention can comprehensively consider the prospects and benefits of new energy utilization in villages without electricity, and provide valuable references for power construction decisions in remote areas without electricity. The use of new energy directly or indirectly brings economic and social benefits to areas without electricity.

The invention provides a method and a system for integrally optimizing an electrical design scheme of a wind electric field. The method comprises the steps of: performing electrical design on the wind electric field based on obtained electrical design data, specifications and standards of the wind electric field; obtaining an initial electrical design scheme; calculating reliability and economic indexes based on the obtained electrical design scheme; optimizing the initial electrical design scheme by utilizing the reliability and the economic indexes to obtain the optimized electrical design scheme of the wind electric field; finally, synthesizing the optimized electrical design scheme of the wind electric field based on the current running environment of the wind electric field, and performing integral optimization on the electrical design scheme of the wind electric field. The electrical design scheme of the wind electric field is optimized by fully considering the characteristics of the wind electric field, optimizing the initially obtained electrical scheme by utilizing the reliability and the economic indexes of each constituent component of the wind electric field after the initial electrical design scheme is obtained, and combining the electrical design, the reliability evaluation and the economic evaluation together.