72 results about "Pumped-storage hydroelectricity" patented technology

This invention belongs to the technical field of pumped storage power station benefit analysis. It discloses a method for analyzing the economic benefits of pumped storage power stations based on diversified market transactions. The method includes: obtaining a structured market time series table, obtaining a detailed report on electricity revenue, obtaining an ancillary service revenue assessment report, obtaining a carbon market revenue report, obtaining a green value revenue analysis report, integrating the detailed report on electricity revenue, the ancillary service revenue assessment report, the carbon market revenue report, and the green value revenue analysis report, allocating the power station's public costs, obtaining a multi-market revenue and cost summary report, obtaining a net benefit sensitivity analysis report, and obtaining a comprehensive power station assessment and decision report, which are then output. Overall, this invention has significant advantages such as comprehensive benefit assessment, high accuracy in calculating net benefits from various markets, and reliable role in power station economic benefit analysis.

This application discloses an operation control method, apparatus, medium, and equipment for pumped storage power stations. The method includes: obtaining the usage willingness of each bidding entity for each pumped storage power station, the usage willingness being determined based on the load information and renewable energy output information of each bidding entity; determining the equity parameters of each bidding entity using each pumped storage power station based on the power allocation ratio of each bidding entity to each pumped storage power station and the usage willingness of each bidding entity; determining the target bidding entities to which each pumped storage power station is allocated based on the equity parameters of each bidding entity; determining the pumping plan of each pumped storage power station based on the load information of the target bidding entities to which each pumped storage power station is allocated; and controlling each pumped storage power station to operate according to the corresponding pumping plan. This application can reasonably and accurately control pumped storage power stations.

This disclosure provides a method and system for selecting the site of pumped storage power stations based on spatial constraints and elastic buffers, relating to the field of data processing technology. The method includes: acquiring a set of spatial constraint elements corresponding to the pumped storage power station; determining the constraint control rules corresponding to each spatial constraint element in the set; applying range constraints to each associated spatial constraint element based on the constraint control rules; generating at least one elastic buffer corresponding to each spatial constraint element; determining engineering requirement indicators and geological assessment indicators; and filtering the elastic buffer based on the engineering requirement indicators and geological assessment indicators to obtain the target effective construction area. This solution enables differentiated management of different types of spatial constraint elements, thereby ensuring the safety of pumped storage power station construction, and allows for multi-dimensional filtering of elastic buffers to determine the target effective construction area, ensuring the accuracy and practicality of the target effective construction area.

The application discloses a kind of double-fed variable-speed pumped storage power station regulating system stable domain quantitative analysis method, this method is by establishing the fine model of double-fed variable-speed pumped storage power station regulating system, and the stable domain of fine model is simulated and calculated in time domain;By reducing the order to the fine model, the stable domain and the margin domain of the reduced-order model are derived and calculated;The stable margin of reduced-order model is used to quantify the stability domain of fine model.The method disclosed in the application points out the stability difference of the fine model and the reduced-order model of the control system of variable-speed pumped storage power station, which can guide the personnel of variable-speed pumped storage power station to use the reduced-order model to optimize the design of complex system parameter setting and hydraulic and electrical parameters, and improve the accuracy of the results.

This utility model discloses a compaction device for asphalt concrete panel construction in pumped storage power stations, belonging to the field of pumped storage power station construction technology. It includes a roller body with a mounting frame at its forward end. A compaction roller is rotatably mounted within the mounting frame. Connecting rods are fixed to the outer walls on both sides of the forward end of the mounting frame. An extension plate is welded between the ends of the two connecting rods furthest from the mounting frame, located in front of the compaction roller. A pre-cleaning assembly is located on the bottom surface of the extension plate. This assembly includes cleaning components symmetrically arranged on the bottom surface of the extension plate for sweeping dust particles forward and backward. A solid impurity removal component, located in the middle of the cleaning components and on the bottom surface of the extension plate, is used to remove protruding particles and stones from the asphalt concrete panel of the pumped storage power station. This utility model can effectively remove impurities of various shapes, significantly improving the cleanliness of the base surface and providing a good foundation for subsequent compaction.

The application discloses an anti-wind-pressure integrated assembly type external wall external thermal insulation system and a construction method thereof, and is suitable for ground buildings of pumped storage power stations in severe cold regions and comprises a main body structure, a non-load-bearing wall, a steel wire mesh frame composite rock wool board and the like. Through technologies such as anchor bar+anchor bolt double anchoring, steel keel frame overall support and integral connection of the steel wire mesh frame composite rock wool board and the structure, the problems of easy falling of the thermal insulation layer, wind pressure difference and freeze-thaw resistance are solved, the advantages of anti-wind-pressure greater than or equal to 5kPa, no damage after 200 times of freeze-thaw cycles at-40 DEG C and a construction period shortened by 40% are realized, and the application has good industrialization popularization value.

This invention discloses a method and system for optimizing the orientation angle of the inlet and outlet of a pumped-storage power station reservoir. The method includes: first, conducting an upstream and downstream aquatic ecological survey of the intake to identify key ecological parameters of upstream migratory fish species; second, constructing a three-dimensional hydrodynamic model to simulate the flow field characteristics under the original design scheme and quantifying the baseline value of the fish egg entrainment effect; subsequently, designing multiple comparative schemes for downstream deflection of the inlet and outlet, simulating and quantifying the ecological protection benefits of each scheme; furthermore, conducting multi-dimensional quantitative analysis of the engineering safety, cost, and power generation benefits of each scheme; and finally, constructing a comprehensive evaluation system for both engineering and ecological benefits, and determining the optimal orientation scheme using Pareto optimality analysis. This invention achieves quantitative and systematic optimization of the inlet and outlet orientation, effectively mitigating the entrainment effect of pumping conditions on the early resources of migratory fish species while ensuring engineering safety and economic benefits. It can be widely applied to the design of pumped-storage power station projects relying on existing reservoirs.

The application provides a low-heat high-anti-crack cementitious material for pumped storage power station mass concrete, relates to the technical field of building materials, and comprises low-heat Portland cement, active metakaolin, sulfate adjusting components, crystal nucleus filling components, grinding aids and temperature peak memory reverse activation self-limiting compensation function particles. The function particles are composed of a thermal memory core, a liquid storage and slow-release ring, a low-modulus decoupling film and a reverse reaction shell, can release water in a directional manner and trigger a shell compensation reaction after the temperature rise of the concrete exceeds the melting threshold and falls back to the crystallization threshold, realize peak cutting and heat reduction, post-peak internal curing and staged compensation. The cementitious material can significantly reduce the adiabatic temperature rise peak value, reduce its own shrinkage and prolong the restrained cracking time, and is suitable for pumped storage power station dams, underground powerhouses, volute foundations and pressure pipelines and other mass concrete structures. The preparation process is simple, and the cementitious material is convenient for factory production and engineering application.

This utility model discloses an installation tool for stator bars in a pumped-storage power station. It includes a lifting mechanism mounted on the upper surface of a base plate for raising and lowering the stator bars during hoisting; a translation mechanism mounted on one side of the lifting mechanism for moving the stator bars horizontally; a steering mechanism mounted on the translation mechanism for turning the stator bars; and a gripper mechanism for holding the stator bars. When installing stator bars in a pumped-storage power station, this utility model uses the translation mechanism to move the horizontal position of the stator bars, the lifting mechanism to adjust their height, and the steering mechanism to achieve different installation angles. This improves the flexibility of hoisting operations, enables rapid bar positioning, reduces complex adjustments and auxiliary measures, improves installation efficiency, shortens the construction cycle, and reduces labor intensity and construction costs.

This invention discloses a two-way fluid simulation system for side-mounted inlets / outlets based on the RSM turbulence model. Belonging to the field of energy and power engineering, the system includes: a global geometric modeling module for constructing a coupled geometric model encompassing the tailrace tunnel and side-mounted inlets / outlets; a physical parameter configuration module for setting flow and pressure boundaries under two-way flow conditions; a mesh generation module for structured mesh generation and local refinement of the model; an RSM solution module for closed-loop solution of the two-way flow field using the Reynolds stress model to obtain state data; and a multi-index evaluation module for extracting and analyzing the flow regime within the diffuser section, the velocity distribution of the trash rack, flow distribution, and turbulence parameters. This invention can systematically evaluate the differences in hydraulic characteristics of different vertical expansion methods in the diffuser section, providing a reliable scientific basis for the design of the inlet / outlet shape of pumped storage power stations.

The application provides a water level prediction method and device for a water collection area of a pumped storage power station, and the method comprises the following steps: correcting rainfall prediction data to obtain rainfall input data; making a prediction based on the rainfall input data and basin water level characteristic parameters to obtain an initial water level prediction value; constructing a residual prediction model based on the residual between the measured monitoring water level value and the initial water level prediction value, determining boundary correction data of a monitoring blank period based on the initial water level prediction value of an effective monitoring period adjacent to the monitoring blank period and the residual prediction model; simulating the water level of the monitoring blank period based on the boundary correction data and the rainfall input data to obtain target water level data of the monitoring blank period; constructing a full-period continuous water level sequence based on the measured monitoring water level data and the target water level data of the monitoring blank period, making a water level prediction based on the full-period continuous water level sequence to obtain a water level prediction result; and making a water level warning according to the comparison result of the water level prediction result and a preset warning threshold.

This utility model provides an escape hydraulic structure for a pumped storage power station combined with a maintenance gate tunnel and a construction adit. It includes an inlet / outlet maintenance gate tunnel, the first end of which connects to the construction adit. The construction adit serves as an escape passage. A staircase is installed inside the inlet / outlet maintenance gate tunnel and connects to the construction adit. This utility model meets the fire safety requirements of the inlet / outlet maintenance gate tunnel. In case of emergency, personnel can escape to a safe area outside the tunnel via the escape passage.

1. The name of the design product: special fire operation management and control platform for hydropower stations and pumped storage power stations. 2. The use of the design product: smoke dust collection for fire operation. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

This invention relates to the field of data processing and prediction technology, and provides a method, device, equipment, and medium for predicting and warning of tailrace tunnel inrush. The method includes estimating flow rate based on monitoring video of tailrace tunnel nodes to generate a real-time flow sequence; constructing an adjacency matrix based on the real-time flow sequence, seepage pressure data from seepage monitoring points, and seepage paths; processing the adjacency matrix using a multi-scale time attention mechanism to output a predicted inrush volume; and outputting an early warning strategy based on the predicted result and preset early warning standards. This invention achieves full-chain optimization of tailrace tunnel inrush, from monitoring and perception to accurate prediction and scientific early warning. It not only improves the comprehensiveness and real-time performance of inrush monitoring and the accuracy and adaptability of prediction, but also ensures the timeliness and effectiveness of response through a clear early warning strategy, significantly enhancing the safety and stability of tailrace tunnel operation and providing strong support for the reliable operation of pumped storage power stations, thus possessing significant engineering practical value.

The present application relates to pumped storage power plant wastewater treatment technical field, provide a kind of sandstone wastewater treatment device and method, device includes: water inlet buffer tank, is provided with water inlet flowmeter, water inlet suspended solids detector and water inlet level gauge;Thickener, inside is provided with sludge meter;Coagulation integrated equipment, including sequentially communicating water inlet stirring zone, inclined plate sedimentation zone and coagulation effluent pipe;Clean water tank, is provided with effluent suspended solids detector and effluent level gauge;Desludging machine room, the desludging machine room is provided with diaphragm plate frame filter press and chemical adding device;PLC controller.The present application realizes the real-time monitoring of each parameter of sandstone wastewater treatment device by the above setting, then the monitoring data obtained is processed by PLC controller, realizes the unified automatic allocation of water inlet buffer tank, thickener, coagulation integrated equipment, clean water tank and desludging machine room, does not need artificial monitoring control, greatly improves the efficiency of sandstone wastewater treatment, reduces operating cost.

The application belongs to the technical field of water conservancy and power engineering, and specifically discloses a pumped storage power station peak regulation power optimization method for multi-provincial benefit sharing, which comprises the following steps: obtaining the expected pumping power and the expected power generation power of each province to the pumped storage power station; checking the expected pumping power and the expected power generation power in combination with the physical constraints of the pumped storage power station to obtain the actual pumping power and the actual power generation power of each province; determining the residual load and the unallocated benefit power of each province according to the actual pumping power and the actual power generation power; and determining the peak regulation power of the pumped storage power station when the residual load fluctuation variance of each province meets the preset condition in combination with the residual load and the unallocated benefit power. The application constructs a benefit power provincial independent reporting and checking mechanism, and takes into account the provincial peak regulation willingness and the power station operation constraints.

This invention provides a method for selecting the optimal expansion location of pumped-storage units in a cascade hydropower station, relating to the field of power station dispatching technology. The method includes: S1: establishing multiple operating conditions for expanding pumped-storage units; where each operating condition represents the expansion location of the pumped-storage unit; S2: performing short-term peak-shaving optimization on the above multiple operating conditions using an appropriate mixed-integer linear programming model to obtain the peak-shaving optimization results for each operating condition; S3: comparing the peak-shaving optimization results for each operating condition to obtain the optimal expansion site selection scheme. This method relies on expanding pumped-storage units in existing cascade hydropower stations to form a cascade hybrid pumped-storage power station, which can compensate for the shortcomings of long construction cycles and high costs of pumped-storage, accelerating the construction of pumped-storage; using the unit as the smallest dispatching unit, the dispatching object is more detailed, closer to engineering realities, and better meets short-term peak-shaving needs; comparing the peak-shaving optimization results under different operating conditions can provide a useful reference for subsequent site selection and expansion of pumped-storage units.

Provided is a complete set of switch equipment for pumped storage power station units, which comprises three single-phase switch cabinet devices that are electrically connected to achieve three-phase mechanical linkage, the three-phase switch equipment is divided into three phases, the circuit breaker controlled by the single-phase switch cabinet device is formed by two vacuum arc chambers in parallel, the single-phase switch cabinet device comprises a transmission box and a mechanism box that are fixedly connected and distributed in front and back, a spring operating mechanism is installed in the mechanism box, the output crank of the spring operating mechanism is connected with the input end of a four-bar linkage transmission mechanism arranged in the transmission box, and the two output ends of the four-bar linkage transmission mechanism are connected with the lower ends of the insulation pull rods of the two vacuum arc chambers of the corresponding phase circuit breaker. The utility model solves the problems of long procurement cycle, high procurement cost and untimely after-sales service caused by excessive dependence of pumped storage power station unit switch equipment on imported equipment, improves the shunt capacity and breaking capacity of the circuit breaker, solves the problem of heating of the large-current switch, and the opening and closing action is reliable, rapid and compact in structure.

A kind of pumped storage and new energy generation collaborative automatic generation control method, including multiple control cycles, each control cycle includes the following steps: collecting multiple parameter data of power system, and calculating economic power purchase value according to the data collected;According to the situation of data acquisition, the operating mode of control system is switched;In grid-connected state, control system generates operation control instruction;The operation control instruction is sent to operating equipment by wireless communication or hardwired form, and a control cycle is completed.The present application can guarantee the power grid power, frequency stable condition to improve the penetration rate of new energy as far as possible, while improving the economic benefit of pumped storage power station and power grid auxiliary service ability of wind and light power station joint transmission system.

The application provides a pumped storage power station underground chamber group air heat energy coupling temperature regulating system, which comprises an underground chamber group heat reservoir, an air source heat pump unit, a heat exchange pipeline network, a heat energy conveying system and a control system; the underground chamber group heat reservoir is formed by a main plant, a main transformer tunnel and a tailgate chamber of the pumped storage power station being connected to form a closed space cluster; the air source heat pump unit comprises a compressor, a condenser and an evaporator, and the evaporator, the compressor and the condenser are sequentially connected; the heat exchange pipeline network comprises a suction pipeline, a heat release pipeline and a return pipeline, the air inlet end of the suction pipeline is connected with the underground chamber group heat reservoir, the air outlet end of the suction pipeline is connected with the evaporator, the air inlet end of the return pipeline is connected with the condenser, the air outlet end of the return pipeline is connected with the underground chamber group heat reservoir, and the two ends of the heat release pipeline are respectively connected with the condenser and the heat energy conveying system. The underground chamber group heat reservoir is used as a heat pump stable heat reservoir, so that the temperature is reduced, waste heat is recycled and heat energy is reused.

The present application relates to pumped storage power station and photovoltaic complementary operation technical field, disclose a kind of pumped storage power station and photovoltaic energy storage complementary operation calculation method and system, to solve the problem of accuracy, reliability and engineering applicability of existing method insufficient, scheme mainly includes: collection photovoltaic resource distribution condition data and its output characteristic data, and the basic information data of pumped storage power station and related transmission line;According to the data collected, formulate the calculation principle and boundary constraint condition of pumped storage power station and photovoltaic complementary operation;Based on calculation principle and boundary constraint condition, the mathematical model of pumped storage power station and photovoltaic energy storage complementary operation is constructed;Improved particle swarm optimization algorithm is used to simulate the output process of pumped storage power station and photovoltaic complementary development scheme, new energy utilization rate, transmission channel utilization hours, new energy on-grid power and pumped storage on-grid power.The present application improves the accuracy, reliability and engineering applicability of calculation result.

The application discloses a provincial power grid day-ahead plan hierarchical progressive optimization method containing multiple pumped storage power stations, which comprises the following steps: obtaining basic data of a power system; establishing a power system day-ahead plan optimization model containing multiple pumped storage power stations; calculating day-ahead plan output values of wind, light and conventional units; further calculating start-stop plan of each pumped storage unit according to the plan output values; and finally obtaining day-ahead output plan values of each unit by solving the pumped storage start-stop plan. The application can overcome the difficulty in convergence when the scale of integer problems and linear programming problems is large even if mature optimization solvers such as CPLEX and GLPK are used, make large-scale integer linear mixed programming problems converge better, meet the online application requirements of day-ahead plan making, and have important practical significance for fully utilizing new energy and efficiently operating pumped storage power stations.

This invention provides a novel reservoir-wide seepage prevention system for a pumped-storage power station. The system includes a reservoir basin, reservoir banks, and a seepage prevention structure. The seepage prevention structure includes a geotextile layer, a quick-setting rubber asphalt waterproof coating seepage prevention layer, a toe slab, another geotextile layer, and a top layer. The geotextile layer is laid on top of the reservoir banks and basin, and a quick-setting rubber asphalt waterproof coating seepage prevention layer is sprayed onto the top of the geotextile layer. The toe slab is positioned on top of the quick-setting rubber asphalt waterproof coating seepage prevention layer, and a quick-setting rubber asphalt waterproof coating seepage prevention layer is sprayed onto the top of the toe slab. Another geotextile layer is laid on top of the quick-setting rubber asphalt waterproof coating seepage prevention layer on the toe slab. The top layer is placed on top of the other geotextile layer. This technical solution utilizes multiple layers of geotextile and multiple layers of quick-setting rubber asphalt waterproof coating seepage prevention layers in combination, achieving full reservoir seepage prevention.

The application provides a kind of pumped storage unit water turbine operating condition starting process performance multi-index fusion calculation method, relating to pumped storage power station technical field. Including Step1, data standardization;Step2, using fuzzy membership function to convert the data after standardization into fuzzy evaluation matrix;Step3, calculate information entropy;Step4, calculate variation coefficient;Step5, determine adaptive weight from information entropy in Step3 and variation coefficient in Step4;Step6, calculate starting process comprehensive performance score;Starting process comprehensive performance score is obtained by weighted summation, while introducing nonlinear adjustment factor to enhance the degree of differentiation. Through fuzzy membership function processing the uncertainty of index, using information entropy theory to determine the index weight objectively, and introducing adaptive mechanism to dynamically adjust weight distribution, so as to realize scientific, objective comprehensive evaluation of multi-index system.

This invention provides an equivalent evaluation system and method for the frequency regulation benefits of pumped storage power stations considering random frequency fluctuations. The system includes a load data refinement module, a frequency fluctuation simulation module, a pumped storage output simulation and refinement module, a frequency regulation interval division and response identification module, a frequency regulation benefit quantification module, and a comprehensive benefit evaluation module. Based on the intraday load fluctuation characteristics of the power system, a random frequency fluctuation sequence is constructed and superimposed on a high-precision grid load sequence to generate a physically realistic grid frequency fluctuation sequence. Based on the active power output characteristics of the pumped storage units in each frequency regulation response interval, the equivalent frequency regulation benefit value of the pumped storage power station is output. This invention achieves accurate identification and benefit quantification of the frequency regulation response process by constructing a high spatiotemporal resolution grid disturbance environment, improving the scientific rigor and practicality of the frequency regulation capability evaluation of pumped storage power stations. It can provide technical support for the frequency regulation value calculation and ancillary service market pricing of energy storage projects.

The invention relates to a pumped-storage power plant for storing and feeding electrical energy back into the grid and for adjusting the grid load in a power grid (9) connected to the pumped-storage power plant, wherein the pumped-storage power plant comprises a plurality of lifting modules (4), and wherein each of the lifting modules (4) includes a double winch arranged at ground level, a lifting weight (4.2) suspended therefrom by two winch cables (4.3), cable guides for guiding the winch cables (4.3) and the lifting weight (4.2), and an electronic unit for control and power conversion. The individual lifting modules (4) are controlled as required via a central control unit (5). Due to its modular design, the pumped-storage power plant enables highly efficient, flexible energy buffering and is particularly suitable for integration into decentralized energy supply systems.

The application discloses a kind of factor sensitivity evaluation method and system influencing pumped storage power station energy efficiency, based on the energy conversion principle of pumped storage power station, the mixed physical-data driven model for obtaining cycle efficiency is constructed, based on the mixed physical-data driven model trained, the partial derivative of each input factor, the standard deviation of factor and cycle efficiency on data set, the global sensitivity coefficient of each input factor to cycle efficiency is calculated, for the specific operating condition of power station, the instantaneous elasticity coefficient of each key factor at different time is calculated, and the dynamic trajectory visualization of sensitivity of efficiency to factor is realized based on instantaneous elasticity coefficient;Physical knowledge in the field of pumped storage is embedded into the structured learning process of deep learning, which solves the problem that traditional methods are difficult to quantify the sensitivity of complex systems, which can learn complex nonlinear relationships from high-dimensional operating data and has strong physical interpretability.