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47 results about "Reservoir optimization" patented technology

Cascade reservoir optimization regulation and control method based on nitrogen and phosphorus circulation of water body

The invention discloses a cascade reservoir optimization regulation and control method based on nitrogen and phosphorus circulation of a water body, and relates to the technical field of water resource management optimization. Multi-dimensional data of a gradient reservoir is collected, and a time-space aligned multi-modal data set is constructed; according to a biogeochemical process of nitrogen and phosphorus circulation, a physical equation of the nitrogen and phosphorus circulation is deduced, and a physical constraint loss item is designed and is subjected to weighted combination with data driving loss to form a mixed loss function. According to the method, the physical constraint neural network model is constructed, and the physical equation of nitrogen and phosphorus circulation is embedded into the neural network loss function, so that the strong fitting capability of the data driving model is utilized, and the model output is ensured to accord with the biogeochemical law through the physical constraint; the key parameters of the physical equation are calibrated through the Bayesian optimization algorithm, the prediction precision of the model on the nitrogen and phosphorus migration and transformation process is further improved, the dependence on big data is effectively reduced, and a reliable prediction result can still be provided especially under the condition that the temporal-spatial resolution of data is low.
Owner:INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI +1

Reservoir multi-objective optimization intelligent scheduling method based on deep reinforcement learning and deterministic strategy gradient algorithm

The invention belongs to the field of reservoir optimization intelligent scheduling, and particularly provides a reservoir multi-objective optimization intelligent scheduling method based on deep reinforcement learning and a deterministic strategy gradient algorithm, which comprises the following steps: collecting original hydrological data and reservoir characteristic curves of a target reservoir; establishing a multi-objective optimization scheduling model including an objective function and constraint conditions; mapping the multi-objective optimization scheduling model into a Markov decision process, and establishing a corresponding reinforcement learning environment; a deep reinforcement learning deterministic strategy gradient algorithm is selected to perform interactive training with the environment, and a reservoir multi-objective optimization intelligent scheduling model is established; and performing multi-target optimization intelligent scheduling on the reservoir through the reservoir multi-target optimization intelligent scheduling model. The method solves the problems that in the prior art, a deep reinforcement learning method generally adopts a fixed weight to design an excitation function, so that the flexibility of a learned scheduling strategy is insufficient, and real-time dynamic coordination optimization of each reservoir scheduling target is difficult to realize according to an environment state.
Owner:CHINA YANGTZE POWER

Deep and large reservoir ecological scheduling method, system and equipment of data-driven model based on coupling physical mechanism

The invention discloses a deep and large reservoir ecological scheduling method, system and equipment based on a data-driven model of a coupling physical mechanism, and belongs to the technical field of water resource management and environmental protection. Firstly, a physical water temperature model is constructed based on measured data, diversified water temperature change scenes are generated, and a deep learning model constrained by a physical mechanism is constructed. Secondly, carrying out sensitivity analysis to identify key influence factors for driving water temperature change, constructing a reservoir optimization scheduling model, coupling a deep learning model constrained by a physical mechanism, and deducing a scheduling rule set on the premise of meeting a water temperature target; and finally, carrying out multi-index optimization analysis. The invention further provides a deep and large reservoir ecological scheduling system and electronic equipment, and the deep and large reservoir ecological scheduling method is realized. According to the method, the power generation scheduling rule set of the deep and large reservoir can be scientifically deduced, the optimal scheduling scheme with both ecological benefits and economic benefits is screened out by introducing the multi-index optimization method, and overall balance of ecological requirements and power generation benefits is achieved.
Owner:DALIAN UNIV OF TECH

Dam hydraulic opening and closing control method, device and equipment and storage medium

The invention relates to the technical field of reservoir flood control dispatching, and discloses a dam hydraulic opening and closing control method, device and equipment and a storage medium. The method comprises the steps that multi-source hydrological data, weather forecast information and unit operation states of a current reservoir are collected; inputting the multi-source hydrological data and the weather forecast information into a preset hydrological prediction model, and outputting a hydrological prediction result; based on the hydrological prediction result and the real-time reservoir area water level and the unit operation state in the multi-source hydrological data, a gate opening control instruction is generated through a reservoir optimization scheduling model; and a hydraulic opening and closing system is adjusted according to the gate opening control instruction, and the current reservoir flood discharge gate opening is controlled. According to the method, data such as upstream incoming water, reservoir area water level and water consumption are utilized, weather forecast information is combined, a hydrological prediction model is constructed, a reservoir dispatching scheme is optimized according to a hydrological model prediction result, the reservoir area water level and unit operation conditions, and on the premise that flood prevention safety is guaranteed, reservoir dispatching is optimized, the reservoir area water level is automatically adjusted, and power generation benefits are improved.
Owner:四川华能泸定水电有限公司

A method for linearizing the output function of a hydropower station based on rectangular grids

The present invention provides a method for linearizing the output function of a hydropower station based on rectangular grids, comprising: taking a binary function between the upper and lower limits of the permissible range of the average storage capacity of a reservoir period and the outflow flow as the output function of the hydropower station; equally dividing the feasible domain of the output function of the hydropower station into rectangular grids; defining a corresponding plane for each rectangular grid; constructing a quadratic programming model for calibrating the plane cluster parameters that approximate the output surface of the hydropower station based on the characteristic parameters of the plane; solving the quadratic programming model to obtain the parameters of a set of plane equations that approximate the optimal output of the hydropower station; in a reservoir optimization scheduling model whose scheduling target includes maximizing the output of the hydropower station or the power generation of the hydropower station during the scheduling period, using the parameters of the plane equations obtained by solving to construct a linearized expression of the hydropower output function in the reservoir optimization scheduling model. The present invention not only avoids the introduction of integer variables, improves the solution efficiency, but also ensures the accuracy of fitting the output of the hydropower station.
Owner:CHINA YANGTZE POWER

Reservoir flood season water level dynamic multi-objective optimization control system and method

The invention relates to the technical field of reservoir optimization scheduling, in particular to a dynamic multi-objective optimization control system and method for the water level of a reservoir in a flood season. The method comprises the following steps: acquiring real-time monitoring data of a reservoir; extracting current water level state information according to the real-time monitoring data of the reservoir; establishing a reservoir water balance basic model based on the current water level state information; analyzing pipeline water supply flow change characteristics according to the reservoir water balance basic model; identifying response lag time of pipeline fluid inertia according to pipeline water supply flow change characteristics; predicting a water supply line pressure fluctuation risk based on the response lag time; and determining the water level regulation and control advance according to the water supply pipeline pressure fluctuation risk and the response lag time. According to the method, the multi-objective optimization model is adopted, the flood control safety margin and the water supply guarantee degree can be balanced, and it is ensured that the reservoir can cope with the flood risk in the flood season and can stably meet the water supply requirement.
Owner:水利部珠江水利委员会珠江水利综合技术中心

Cascade reservoir scheduling method and system based on artificial bee colony algorithm

The invention discloses a cascade reservoir scheduling method and system based on an artificial bee colony algorithm, and the method comprises the following steps: the system collects multi-source hydrological data in real time through a hydrological perception and preprocessing module, and introduces a large language model to carry out the semantic judgment and anomaly labeling of an abnormal hydrological time sequence; inputting the processed high-quality data into a reservoir model construction module, establishing a cascade reservoir optimal scheduling system, and setting corresponding boundary conditions and operation constraints in combination with reservoir scheduling regulations; the scheduling optimization module receives model input, adopts a variable structure taking a water level as a core to construct an optimization individual, and completes population initialization, disturbance generation and fitness evaluation based on a potential solution guide mechanism in an improved artificial bee colony algorithm; the system transmits the scheduling sequence optimized and output by the scheduling optimization module into an LLM intelligent auxiliary module; and the intelligent text interpretation generated by the LLM and the scheduling optimization solution enter a result evaluation and visualization module together. According to the scheduling method and system, a high-quality and physically feasible scheduling scheme can be output within reasonable calculation time.
Owner:CHINA YANGTZE POWER

Fracture-vuggy carbonate reservoir reasoning method and device based on knowledge graph

The invention discloses a fracture-vug type carbonate rock fracture-vug reservoir reasoning method and device based on a knowledge graph. The device comprises an ontology construction module, a knowledge extraction module, a knowledge fusion module, a business rule module, a reasoning model module and a reservoir comprehensive evaluation model. Wherein the business rules comprise an oil reservoir analysis rule, a reservoir physical property rule, a logging interpretation rule and the like, the calculation model is a carbonate reservoir comprehensive reasoning model, and comprehensive reasoning analysis is performed on each fracture-cavity reservoir by combining the business rules of the business rule module with a carbonate fracture-cavity reservoir comprehensive reasoning method. And generating a carbonate rock fracture-cavity reservoir optimization scheme. According to the method, the exploration target optimization working efficiency of the carbonate fractured-vuggy reservoir can be improved, the pertinence, accuracy and timeliness of exploration decision making are improved, the exploration risk is reduced, and the decision making efficiency is improved.
Owner:PETROCHINA CO LTD

A linearization method for the output function of a hydropower station based on a simplified constraint strategy

This invention provides a method for linearizing the power output function of a hydropower station based on a simplified constraint strategy. The method includes: equally dividing the feasible region of the power output function into rectangular grids; defining a corresponding plane for each rectangular grid; constructing a quadratic programming model for calibrating the plane cluster parameters that approximate the power output surface of the hydropower station based on the characteristic parameters of the planes and the simplified plane set corresponding to the rectangular grids generated using the simplified constraint strategy; solving the quadratic programming model to obtain a set of plane equation parameters that approximate the optimal power output of the hydropower station; and in a reservoir optimization scheduling model where the scheduling objective includes maximizing the power output or power generation of the hydropower station within the scheduling period, using the parameters of the solved plane equations to construct a linearized expression for the hydropower output function in the reservoir optimization scheduling model. This invention avoids introducing integer variables, reduces the size of the quadratic programming model while ensuring the accuracy of fitting the hydropower station's power output, and greatly improves the solution efficiency.
Owner:CHINA YANGTZE POWER +1

Reservoir optimization scheduling method based on water conservancy runoff forecast

The invention discloses a reservoir optimization scheduling method based on water conservancy runoff forecast, and the method comprises the steps: 1, collecting the rainfall, evaporation, soil humidity and other data of a drainage basin, eliminating the dimensional difference through normalization processing, constructing a multi-source database, and providing input for a data-driven model; 2, inputting multi-source data to the LSTM-BiLSTM-EnKF hybrid model, generating short-term runoff forecast, and converting a discrete forecast result into a continuous reservoir flow process through a cubic spline interpolation algorithm, and 3, inputting the continuous runoff process into a dynamic optimization model, and solving a minimum abandoned water scheduling scheme; and 4, dynamic flood control water level control and in-plant optimization operation strategy. The LSTM-BiLSTM-EnKF hybrid model is adopted to replace a traditional physical model, the problems that parameter calibration is complex and the data requirement is high are solved, the hybrid model is beneficial to reducing the forecasting error rate through multi-source data fusion and a dynamic feedback mechanism, and then the forecasting precision is improved.
Owner:陈志翔

Reservoir optimization scheduling method based on hybrid swarm intelligence optimization

The invention belongs to the technical field of water resource optimal scheduling, and discloses a reservoir optimal scheduling method based on hybrid swarm intelligent optimization, which comprises the following steps: S1, collecting data required by reservoir historical inflow, a reservoir capacity curve, a water supply demand and a scheduling constraint condition; s2, setting a constraint condition and a scheduling target, and establishing a reservoir scheduling optimization model; s3, constructing a candidate solution group on the basis of combining reservoir scheduling decision variables, performing initial fitness calculation by utilizing an objective function of the reservoir scheduling optimization model, introducing a hybrid group intelligent optimization algorithm, performing multi-objective optimization scheduling calculation on the reservoir scheduling optimization model, and performing iterative updating; s4, completing all set iterations, and outputting a reservoir optimization scheduling scheme meeting constraint conditions; according to the method, the premature convergence problem of a traditional swarm intelligence optimization algorithm is effectively avoided, the convergence speed and the solution stability are improved, and the method is suitable for optimization solution of single-library and multi-library systems in single-target or multi-target scheduling problems of water supply, flood control, power generation and the like.
Owner:HUAZHONG UNIV OF SCI & TECH

Reservoir optimization scheduling method oriented to scheduling plan

The invention provides a reservoir optimization scheduling method for a scheduling plan, and relates to the technical field of reservoir multi-task coordination, and the method comprises the steps: randomly generating a plurality of groups of monthly power generation plans; calculating the initial reservoir capacity of the reservoir to obtain the available power generation water quantity of the reservoir; a Newton interpolation method and an improved Powell method are used for dynamically calculating the power generation water volume; the ecological water supply amount, the urban water supply amount and the agricultural water supply amount are calculated; calculating an objective function of the power generation plan meeting the constraint condition; in response to a water shortage target equal time comparison power generation target, obtaining each generation of global optimal and individual optimal power generation plans by comparing target function values; and for reaching the maximum number of iterations, obtaining an optimal power generation plan meeting constraint conditions based on each generation of global optimal and individual optimal power generation plans. According to the invention, the problem of mismatching between the power generation plan and the water supply plan in actual scheduling management is solved.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1

Reservoir optimization scheduling system and scheduling method for generating multiple targets based on AI

The invention relates to a reservoir optimization scheduling system and scheduling method for generating multiple objectives based on AI, the reservoir optimization scheduling system comprises a data input module, a multi-objective optimization module, a constraint processing module, a result output module and a visualization module, the data input module is configured to obtain basic data of a reservoir; the multi-objective optimization module is configured to construct an optimization model based on a particle swarm optimization algorithm, minimize the maximum discharged flow, minimize the flood exceeding storage capacity and minimize the discharged flow change rate as objective functions, and search the optimal discharged flow process through particle iteration; the constraint processing module is configured to perform constraint check on the discharged flow and the water level of the reservoir and apply punishment to solutions violating constraints so as to ensure the feasibility of the scheduling scheme; the result output module is configured to output the optimized discharge flow process, the optimized water level process and the optimized flood limit exceeding storage capacity process; the visualization module is configured to draw a water level-flow process chart and optimize a target convergence curve.
Owner:POWERCHINA HUADONG ENG CORP LTD

Device and method for predicting, controlling and dispatching erosion and deposition amount of downstream river channel of dam

The invention discloses equipment and a method for predicting, controlling and dispatching the scouring and silting amount of a downstream river channel of a dam, which are taken into account the influence of a flood process on the scouring and silting amount of the river channel and comprehensively consider the influence of water and sediment elements and flood characteristics on the scouring and silting amount of the downstream river channel of the dam. Water surface gradient, flow, peak pattern coefficient, jacking coefficient, sediment content and sediment grading elements are incorporated to predict the erosion and deposition amount of the downstream river channel of the dam, a calculation formula structure of the erosion and deposition amount of the downstream river channel of the dam and a matched calculation method are constructed, a corresponding table of the erosion and deposition amount of the downstream river channel of the dam is compiled according to the method, and reverse derivation can be achieved through table query. When the scouring and silting amount of the downstream river channel of the dam is controlled to be a fixed value, key dispatching parameters such as reservoir outlet flow and peak pattern coefficient required to be regulated and controlled by an upstream reservoir; a reservoir management department can formulate a scientific reservoir optimization scheduling scheme through the method, technical guarantee is provided for river regime stability and bank slope protection of a downstream river channel of a dam, flood control standard improvement and shipping safety maintenance are effectively supported, and a decision basis is provided for exerting comprehensive benefits of the reservoir.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

An ecological regulation method for relieving retention of the biogenic substance in a deep and large reservoir

The application discloses an ecological regulation method for relieving the retention of the biogenic substance of a deep and large reservoir, and belongs to the technical field of water resource management and environmental protection technology. The steps are as follows: first, collecting characteristic parameters and multiple types of hydrological and water quality monitoring data of the deep and large reservoir; second, constructing a three-dimensional hydrodynamic-water quality model of the deep and large reservoir; third, based on the three-dimensional hydrodynamic-water quality model of the deep and large reservoir, combining a long series of multiple inputs and multiple output sequences, a data-driven proxy model is constructed; fourth, constructing a reservoir optimization regulation model to deduce suitable regulation rules for decision makers. The application improves the hydrodynamic condition by discharge to reduce the retention of the biogenic substance, and realizes the activation and transportation by using the water temperature stratification condition of the reservoir area, so that the effective biogenic substance is transported to the downstream while the power generation capacity is ensured, thereby realizing the 'quantity, energy and quality comprehensive regulation and control' considering the power generation, ecological flow and biogenic substance, and providing technical support for the comprehensive management of optimizing the utilization of water resources and ecological environment protection of the basin.
Owner:DALIAN UNIV OF TECH

A method and system for predicting water and sediment of a reservoir in an arid region and evaluating potential of collaborative regulation

PendingCN122414671AHydrometryReservoir capacity
The application discloses a kind of arid region reservoir water and sand prediction and coordinated regulation potential evaluation method and system, belong to water resources, silt treatment and reservoir optimization scheduling technical field.The technical problems of traditional model prediction accuracy insufficient caused by arid region hydrology data scarcity, water and sand prediction process is fragmented and reservoir desilting and silt reduction and water storage benefit difficult to be synergistically optimized, its gist is that: long short-term memory network is used to predict future runoff sequence by fusing attention mechanism, and the sediment concentration is calculated by combining the water and sand relationship formula;By setting the critical sediment concentration threshold, the high sediment concentration period is identified and the available water for dredging is calculated;At the same time, the flood resource potential is evaluated by combining reservoir capacity and water demand constraints;Finally, the coordinated scheduling scheme is generated by comparing the two potentials.The application realizes the integrated accurate prediction of water and sand process in arid region and the simultaneous quantitative evaluation of regulation potential, and provides intelligent decision support for multi-objective optimization scheduling of reservoir.
Owner:XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI

Reservoir optimal operation method based on inter-period sensitivity sparse repair and related products

This invention relates to the field of water resource optimization scheduling technology in water conservancy and hydropower engineering, specifically to a reservoir optimization scheduling method and related products based on intertemporal sensitivity sparse repair. The method involves constructing and solving implicit equations for power generation and water volume, establishing an evaluation system and calculating intertemporal sensitivity to obtain a set of key time periods. Then, sparse repair is implemented on the initial power generation plan within this set, and the repair operation is embedded in an iterative optimization framework. This invention avoids the use of empirical estimation or coarse trial calculations in traditional reservoir scheduling, enhances the water resource safety net of reservoirs, suppresses the oscillation phenomenon of traditional intelligent evolutionary algorithms, and maintains the scheduling intent and temporal consistency of the initial predetermined plan on the power grid side.
Owner:SICHUAN SHUIFA SURVEY DESIGN & RES CO LTD

Reservoir scheduling method and system based on hydrological simulation

The invention discloses a reservoir scheduling method and system based on hydrological simulation, and belongs to the field of reservoir optimal scheduling method.The method comprises the steps that a hydrological environment simulation model is built based on hydrological environment data and a preset water and soil conservation model; obtaining initial drainage basin runoff data based on the hydrological environment simulation model; based on the initial drainage basin runoff data and a preset drought evaluation model, obtaining initial drainage basin drought characteristics; constructing a reservoir balance model based on the reservoir feature information; constructing a multi-target reservoir scheduling model based on the initial drainage basin runoff data, the initial drainage basin drought characteristics and a reservoir balance model; and solving the multi-target reservoir scheduling model to obtain a reservoir scheduling optimization scheme so as to realize the scheduling of the multi-target reservoir. Therefore, the problem that in the prior art, a reservoir dispatching optimization scheme is limited to a certain extent in practical application is solved, flexible dispatching and real-time regulation and control of the multi-target reservoir are achieved by building the model, and the hydrological drought problem is avoided.
Owner:SUN YAT SEN UNIV

A multi-objective optimization method for reservoir group dispatching interval under uncertain conditions

The invention discloses a multi-objective optimization method for reservoir group dispatching interval under uncertain conditions, which belongs to the technical field of reservoir optimization dispatching. Firstly, an innovative multi-objective dispatching model for cascade reservoir groups is established; secondly, a dual-population dynamic collaborative interval optimization method is proposed to solve the proposed interval multi-objective dispatching model, and further obtain the optimal dispatching plan for the reservoir group; finally, the optimal dispatching plan set for the reservoir group is output; wherein the proposed optimization method organically combines a chaos-order mapping initialization strategy, a dynamic adaptive mutual promotion update strategy and an elite guidance optimization strategy, so as to quickly and efficiently optimize a set of reliable and accurate dispatching plan sets considering runoff uncertainty, and provides dispatching decision makers with an effective decision-making technical means for solving the multi-objective complex engineering problems of cascade reservoir group optimization, improves the intelligent level and comprehensive benefits of water resources management, and further enhances the ability of water resources system to cope with complex environment and uncertain factors.
Owner:HOHAI UNIV

Associated reservoir optimization scheduling method for cascade hydropower stations

PendingCN119539339Aeffective interceptionReduced water for non-power generationData processing applicationsWater useStream flow
The invention belongs to the field of hydroelectric power generation, and particularly relates to an associated reservoir optimal scheduling method for cascade hydropower stations, which comprises the following steps of: acquiring hydropower station attribute parameters of the cascade hydropower stations and water level and reservoir capacity attribute parameters of associated reservoirs of all stages of hydropower stations, and dividing the cascade hydropower stations into upstream and downstream hydropower stations; the output flow of the upstream associated reservoir of the upstream hydropower station is input into the downstream associated reservoir of the downstream hydropower station to serve as the input flow; according to the flow data of the upstream and downstream associated reservoirs, in combination with the hydropower station attribute parameters and the water level and reservoir capacity attribute parameters, the non-power-generation water consumption variation, the intercepted flood season water inflow and the corresponding annual average power generation amount added value of the cascade hydropower stations are obtained through calculation; and the associated reservoirs of the cascade hydropower stations are dispatched, so that the associated reservoirs operate in an optimized state. Water used for non-power generation is reasonably reduced, the water level is lowered, incoming water in the flood season is effectively intercepted, and large economic benefits are brought to enterprises.
Owner:HUADIAN YUNNAN POWER CO LTD

A deep reservoir ecological regulation method, system and device based on a data-driven model of a coupled physical mechanism

A deep reservoir ecological scheduling method, system and device based on a data-driven model of a coupled physical mechanism belong to the technical field of water resources management and environmental protection. First, a physical water temperature model is constructed based on measured data, diversified water temperature change scenarios are generated, and a deep learning model with physical mechanism constraints is constructed. Second, sensitivity analysis is carried out to identify key influencing factors driving water temperature change, a reservoir optimization scheduling model is constructed, and a deep learning model with physical mechanism constraints is coupled to derive a set of scheduling rules under the premise of meeting water temperature targets. Finally, multi-index optimization analysis is carried out. A deep reservoir ecological scheduling system and electronic device are also provided to implement the above deep reservoir ecological scheduling method. The present application can scientifically derive a set of power generation scheduling rules for deep reservoirs, filter out the optimal scheduling scheme with both ecological and economic benefits by introducing a multi-index optimization method, and achieve the overall balance of ecological demand and power generation benefit.
Owner:DALIAN UNIV OF TECH

Method, device, medium and electronic device for improving nitrogen water quality of dammed river based on reservoir operation

Disclosed is a method for improving nitrogen water quality of a dammed river based on reservoir operation, including following steps: selecting a dammed river to be tested, determining a study area in a riparian zone downstream of a dam, obtaining historical long-sequence water level data of the study area, and analyzing duration and amplitude variation ranges of a historical water level; setting a plurality of groups of flood waves according to the duration and amplitude variation ranges; establishing a riparian zone nitrogen transport and transformation numerical model to simulate a denitrification level of the riparian zone under different flood wave conditions; obtaining an A / T ratio value of one flood wave corresponding to a maximum value of denitrification capacity of the riparian zone according to results of all cases; and taking the obtained A / T ratio value as a threshold of a reservoir discharge hydrograph to achieve reservoir optimization operation.
Owner:NANJING HYDRAULIC RES INST

Continental facies shale reservoir compressibility evaluation model weight calculation method

The invention discloses a continental facies shale reservoir compressibility evaluation model weight calculation method, and belongs to the technical field of hydraulic fracturing. By fusing geological modeling and fracturing simulation results and introducing weight calculation methods such as an analytic hierarchy process and a grey correlation method, the weight of each index is scientifically determined, the degree of dependence on field monitoring data is reduced, meanwhile, quantitative correlation with actual productivity is established, contribution of three types of capability indexes to the productivity is quantified, and the method is suitable for mass production. And finally, a compressibility comprehensive evaluation model with engineering guidance value is determined, the fracturing transformation potential of the reservoir can be represented more accurately, and a scientific theoretical basis is provided for reservoir optimization and fracturing design.
Owner:YANGTZE UNIVERSITY

Multi-objective optimization intelligent scheduling method for reservoirs based on deep reinforcement learning and deterministic policy gradient algorithm

The present invention belongs to the field of reservoir optimization and intelligent scheduling, and specifically provides a reservoir multi-objective optimization and intelligent scheduling method based on deep reinforcement learning and a deterministic policy gradient algorithm. The method includes collecting original hydrological data and reservoir characteristic curves of the target reservoir; establishing a multi-objective optimization and scheduling model including objective functions and constraints; mapping the multi-objective optimization and scheduling model into a Markov decision process and establishing a corresponding reinforcement learning environment; selecting a deep reinforcement learning deterministic policy gradient algorithm for interactive training with the environment to build a reservoir multi-objective optimization and intelligent scheduling model; and performing multi-objective optimization and intelligent scheduling of the reservoir using the reservoir multi-objective optimization and intelligent scheduling model. This method solves the problem in the prior art that deep reinforcement learning methods generally use fixed weights to design incentive functions, resulting in insufficient flexibility in the learned scheduling strategy and difficulty in achieving real-time dynamic coordinated optimization of the scheduling objectives of each reservoir according to the environmental state.
Owner:CHINA YANGTZE POWER

Underground wireless hydrogen sensing framework for reservoir optimization

A method for optimizing a wireless sensor network (230) for monitoring fireflooding hydrogen production involves training a machine learning model to generate an estimate of communication performance for each of a plurality of sensors (232). The sensors are components of a wireless sensor network (230) arranged in a subterranean hydrogen reservoir (202), wherein each of the plurality of sensors (232) is configured to obtain a measurement of an environmental variable of the hydrogen reservoir (202). The method also involves using a machine learning model to minimize the cardinality of the plurality of sensors (232).
Owner:SAUDI ARABIAN OIL CO

Reservoir optimization scheduling method and device based on improved piebald green bird algorithm

The invention relates to the technical field of reservoir scheduling, and discloses a reservoir optimization scheduling method and device based on an improved piebald algorithm, and the method comprises the steps: constructing a reservoir optimization scheduling model; wherein the reservoir optimal scheduling model takes the water level of the hydropower station in each time period within the reservoir scheduling period as a decision variable; randomly generating an initialized population; wherein individuals in the initialized population represent the water level of the hydropower station in each time period within the reservoir dispatching deadline; iteratively updating the position of each individual in the initialized population by simulating the inhabiting and hovering behaviors, the diving behavior and the change of predation efficiency of the emerald; and when the iteratively updated population satisfies an iteration stop condition, determining an optimal reservoir scheduling scheme based on the iteratively updated population. According to the method, the problems of algorithm prematurity and local optimum can be effectively avoided, and the optimization efficiency of the reservoir scheduling scheme is improved.
Owner:CHINA THREE GORGES CORPORATION +2

Long-short-term coupling scheduling method for hybrid pumped storage power station

The invention discloses a long and short term coupling scheduling method for a hybrid pumped storage power station, and belongs to the technical field of power station scheduling. According to the method, based on an existing medium-and-long-term reservoir optimization scheduling model, a long-and-short-term coupling scheduling model considering medium-and-long-term constraints and short-term operation characteristics of the hybrid pumped storage power station at the same time is constructed, a typical day is selected every month, and medium-and-long-term monthly scale constraints and short-term typical day constraints are incorporated into the model; the model comprises an objective function, medium and long term monthly scale constraints, short term typical day constraints and long and short term coupling constraints, nonlinear constraints are linearized and converted into a mixed integer linear programming problem, and the problem is solved by a gurobi solver. The method solves the problem that a traditional model is difficult to accurately describe a'water pumping-power generation 'mode, avoids the deviation of scheduling schemes of different time scales, guides the efficient operation of the hydropower station, improves the power generation benefit, and can be widely applied to the scheduling of the hybrid pumped storage power station.
Owner:HUBEI QINGJIANG HYDROPOWER DEV

A method for calculating weights of a continental shale reservoir compressibility evaluation model

The application discloses a weight calculation method of a continental shale reservoir fracturability evaluation model, and belongs to the technical field of hydraulic fracturing. The application scientifically determines the weight of each index by fusing geological modeling and fracturing simulation results, introducing weight calculation methods such as the analytic hierarchy process and the grey correlation method, reduces the dependence degree on field monitoring data, simultaneously, establishes a quantitative correlation with actual productivity, quantifies the contribution of three types of capacity indexes to productivity, and finally determines a fracturability comprehensive evaluation model with engineering guiding value, so that the fracturing reconstruction potential of a reservoir can be more accurately represented, and a scientific theoretical basis can be provided for reservoir optimization and fracturing design.
Owner:YANGTZE UNIVERSITY

Reservoir optimization scheduling method based on uniform design

The invention discloses a reservoir optimization scheduling method based on uniform design, relates to the technical field of water conservancy projects, and aims to solve the problem that an existing reservoir scheduling method may generate an inaccurate or low-efficiency scheduling result when facing a complex hydrological environment and multi-target demands.The reservoir optimization scheduling method comprises the following steps that S1, basic data of a reservoir are collected, and the basic data are stored in a database; comprise historical hydrological data, real-time hydrological data, reservoir characteristic parameters and flood control requirements, abnormal values are removed through data cleaning, data of different dimensions are uniformly converted into a [0, 1] interval by adopting a standardization method, and a high-quality data basis is provided for subsequent analysis; s2, determining the decision variables of the drainage flow, the reservoir level and the scheduling time period according to the drainage scheduling scene in the feasible region of each variable; the method has the advantages of maximizing the utilization efficiency of water resources, improving the scheduling capability of the reservoir and reducing the waste of the water resources through the uniformly designed optimal scheduling method.
Owner:WATER ENG ECOLOGICAL INST CHINESE ACAD OF SCI

Reservoir desilting and desilting method beneficial to long-term maintenance of flood control reservoir capacity

The invention relates to a reservoir desilting and desilting method beneficial to long-term maintenance of flood control reservoir capacity. The reservoir desilting and desilting method comprises the following steps: collecting river topography, reservoir area water and sediment, reservoir dispatching modes and reservoir siltation data after reservoir storage and application; finding out a main river reach where the flood control storage capacity is silted; in a main river reach where the flood control reservoir capacity is subjected to silt loss, a main time period when the river reach is subjected to scouring is found from actual measurement data; a typical water and sediment process is selected from the main washing time period; establishing a reservoir one-dimensional non-constant running water and sediment mathematical model with a desilting and desilting simulation function; the built mathematical model is adopted, after the silt in the flood control reservoir capacity is calculated and added into the selected typical water and sediment through desilting measures, the desilted silt in the flood control reservoir capacity is conveyed into the dead reservoir capacity on the lower stream or partially conveyed out of the reservoir through reservoir optimization dispatching and by means of the sediment carrying capacity of water flow. The problem of how to couple reservoir desilting and reservoir dispatching and desilting to guarantee long-term use of the flood control reservoir can be solved.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION