88 results about "Reservoir operation" patented technology

A computer-based system analyzes reservoir simulation results with a rule-based event monitor to trigger appropriate warnings in the event any of a number of applicable reservoir operation conditions is detected as likely to occur. The conditions may be automatically analyzed on multi-dimensional data during successive time steps to detect events indicated as needing attention or analysis and thus to alert reservoir engineers about operating conditions in the reservoir so that the engineers may make appropriate operational or simulation changes. The conditions may also be automatically analyzed in a batch processing mode of a set or subset of available time steps to detect and generate a log of events encountered that are indicated as needing attention or analysis.

The invention discloses a method for calculating storage capacity of a reservoir, which belongs to the field of reservoir operation. The storage capacity of a traditional reservoir is obtained by taking the water level of a dam as a reservoir representative water level and calculating the capacity curve interpolation of the water level. In the method, a reservoir surface is a horizontal plane which takes the water level of the dam as a datum mark and neglects a backwater phenomenon at the tail end of the upper stream at a reservoir area as well as additional gradient influence along the upper stream and the lower stream of the reservoir. For a reservoir of a long narrow riverway type, the length-width ratio of the reservoir is very large, the additional gradient of the upper stream and the lower stream at the reservoir area is also large and the backwater phenomenon is obvious at the tail end of the upper stream, so that the storage capacity of the reservoiro, which is btained by calculating the interpolation according to a traditional method, has larger error and seriously affects the calculation accuracy of reservoir operation. By utilizing a dynamic water surface curve method, the invention carries out integral calculation on the basis of actually measured dynamic water surface curve materials collected at the reservoir area, and the integral calculation comprises three links: unit division calculation, telemetering water-level collection and segmented superposition calculation, wherein the unit division calculation is a core processing link, the telemetering water-level collection is a data reorganization and outfit link and the segmented superposition calculation is a result calculation link.

A river basin cascade reservoir and detention and retarding basin joint scheduling method comprises the following steps: S1, collecting the basic data of a river basin; S2, drawing a river basin flood risk chart and dividing risk areas; S3, acquiring precipitation, runoff forecast data and reservoir operation data of reservoirs and ranges in real time; S4, by taking the forecast and operation data in S3 as input, establishing and solving a reservoir group and detention and retarding basin joint real-time scheduling multi-objective optimization model; and S5, enabling detention and retarding basin compensation calculation. The method can give full play to the flood control and economical benefits of detention and retarding basins, and can be widely used in reservoir group and detention and retarding basin joint scheduling. Sustainable development of detention and retarding basins is taken into full consideration by enabling a compensation mechanism. A new scientific decision-making approach is provided for river basin flood control scheduling.

The invention relates to a data-free small reservoir parameter identification method combining hydrological simulation and continuous remote sensing images. The method comprises the following steps: step 1, determining a data-free small reservoir area and an upstream basin range; step 2, reservoir discharge parameters and a discharge curve are determined; step 3, verifying the reservoir dischargeparameters and the discharge curve; and step 4, identifying the reservoir operation mode. The data-free small reservoir parameter identification method provided by the invention not only identifies the reservoir area range and the weir crest elevation, but also provides a reservoir discharge parameter and discharge curve determination and verification method, thereby identifying the reservoir operation mode, and providing technical support for small reservoir flood discharge and small basin flood control in a data-free area.

The present invention relates to an improved algorithm of water energy utilization improvement rate and cascade hydropower station dispatching benefit evaluation system, comprising the following steps: according to the monthly average water level of the actual operation of the reservoir in the past ten years, the dead water level of the reservoir design, the normal high water level of the reservoir design, and the reservoir dispatching diagram Data, calculate the monthly assessment index of the reservoir water level control coefficient, and inversely find the water level control target; calculate the actual power generation; calculate the assessment power generation according to the initial water level, interval flow, water level control target, and dispatching rules of the actual operating water level control coefficient of the reservoir; calculate the storage capacity Differential power; calculate the improvement rate of water energy utilization based on actual power generation, assessment power generation, and storage capacity difference power. The invention can improve the stability and adaptability of the electricity calculation results of the cascade hydropower station group assessment, and can avoid the situation that the water level will drop to the stagnant water level when the inflow of water is less at the beginning of the year, according to the dispatching chart. to good guidance.

The invention relates to the field of reservoir operation, and discloses an optimal operation method of a hydropower station group on the basis of an orthogonal dimensionality reduction search algorithm. The optimal operation method is characterized by comprising the following steps: carrying out encoding design to the hydropower station group by adopting a one-dimensional real number matrix, and obtaining dimensionality n; according to a state discrete number Q and the dimensionality n, constructing a corresponding orthogonal table; obtaining an initial operation process of each hydropower station by a conventional optimal operation method, and calculating to obtain an initial search step length by the state discrete number; according to the current state Z1 and the search step length of each hydropower station as well as the selected orthogonal table, constructing an orthogonal test scheme set, checking the corresponding state of each power station in each orthogonal test scheme, and correcting to a feasible region if border crossing happens; and calculating a target function value of each test scheme by adopting a penalty function method, and selecting an optimal test scheme Z2, wherein Z1 is caused to be equal to Z2 if a Z2 target function value is better than a Z1 target function. The invention has the advantages of being simple and clear in principle, few in calculation parameters, high in convergence rate, high in robustness and the like, and can be used for the optimal operation of a hydropower system and the optimal configuration of water resources.

The invention discloses a hydropower station deterministic optimal operation method based on a reference line and belongs to the technical field of hydropower. The hydropower station deterministic optimal operation method comprises the following steps that (1) a scheduling period is determined, and constraint conditions in the scheduling period are set; (2) a reservoir deterministic long-term optimal operation maximum generating capacity model is established; (3) based on the principle of reducing abandoned water energy and the loss of entering energy, an anti-abandoned-water line and a minimum decision boundary line are obtained; (4) the anti-abandoned-water line is correspondingly adjusted, and the optimal operation reference line is determined; (5) according to the optimal operation reference line, an optimal decision is obtained and used for guiding operation of a hydropower station. According to the hydropower station deterministic optimal operation method, experience of an expert and a reservoir operation rule are fused, and the method can be easily understood and grasped by operation personnel; a corresponding decision can be made at any moment according to the current water storage state of the hydropower station, and the hydropower station deterministic optimal operation method has a higher executable performance and a greater guiding significance.

The invention discloses a simulation operation method for a large-scale reservoir group in a main stream and tributaries of a river basin, and belongs to the field of optimal operation of a hydropowersystem. The method comprises the following steps that (1) construction of reservoir operation function is conducted, analysis of relevant factors affecting reservoir outflow is conducted, correlationanalysis is conducted, and determination of input factors of each reservoir operation function is conducted; (2) construction of a neural network model is conducted according to the input factors ofthe operation function, optimization of neural network parameters is conducted by adopting an adaptive moment estimation algorithm, training is conducted on the constructed neural network by using historical operation data of the reservoir, and the trained neural network is used as fitting function of the reservoir operation function; and (3) according to the fitting function of the reservoir operation function, a spatial topological structure and the constraints of the reservoir operation, the simulation operation model of the reservoir group is established to simulate the operation process of the basin reservoir group step by step. By means of the simulation operation method, the fitting accuracy is improved significantly, and the operation plan of the large-scale reservoir group in themain stream and tributaries of the river basin can be more accurately described in the case of the unknown operation law.

The invention discloses a water supply type reservoir operation chart dynamic control method based on runoff forecasting, and relates to the field of water resource management and water project management. The method comprises following steps: firstly, water supply dispatching calculation is carried out on all years time by time, and the problem of differences of typical year selection and the low assurance rate caused by few samples is solved; on the basis of a conventional water supply dispatching line calculation method, a control factor of a water coming situation is introduced, the opposite position of an operation line in an operation chart is selected as long-term, medium-term and short-term hydrological runoff forecasting, and dynamic control over the operation line under the different rich and low coming water situation; and the problem that according to an existing method, the typical year representativeness is insufficient, and forecasting incoming water is not considered is solved. The water coming and needing situation possibly appearing in reservoir water supply operation can be comprehensively covered, the water supply manner is dynamically controlled according to the rich and low condition of forecasting incoming water, and the aim of optimal utilization of water resources is achieved.

The invention relates to the technical field of cascade reservoir operation, in particular to a cascade reservoir optimal operation method based on cascade reservoir operation coefficients, which is characterized by comprising the following steps of: 1, calculating the cascade reservoir operation coefficients; 2, establishing a cascade reservoir operation coefficient optimization model; and 3, carrying out comprehensive solution. The method has the beneficial effects that two indexes of the reservoir peak distribution coefficient and the base load coefficient are provided, and how to distribute the residual electric quantity of the system among the cascade hydropower stations in the research period and how to distribute the total power generation capacity of the hydropower stations in timesequence are determined. The minimum of the maximum output power shortage rate in a month is taken as an optimization target; conditions such as cascade reservoir output constraint, reservoir capacity constraint, flow constraint and hydraulic relation constraint are considered, an optimization model of cascade reservoir operation coefficients is established, a cascade hydropower space-time optimization distribution result is obtained through solving, and the method has important guiding significance for long-term planning and construction of a new energy base.

The invention discloses a portable water level measuring device for water conservancy project reservoir operation management, which belongs to the technical field of water conservancy projects. The portable water level measuring device comprises a base, rotating frames are fixedly connected to the two sides of the upper end of the base, winding end plates are rotatably connected to the inward sides of the two rotating frames, a winding drum is fixedly connected between the winding end plates, a measuring chain is spirally wound on the winding drum, the measuring chain comprises a plurality of telescopic chain links, a connecting rope and a measuring core rope, the two sides of each telescopic chain link are fixedly connected with chain link hanging lugs, and the telescopic chain links are connected end to end. By arranging the measuring chain, when the measuring chain is used for measuring, a fixed rod body structure can reduce measuring errors caused by deformation of a measuring end during unwinding measurement, the accuracy of a measuring result is improved, reverse operation during winding can separate telescopic chain links, winding of the measuring chain is facilitated, the device is convenient to store and carry, and the practicability of the device is effectively improved.