66 results about "Hydroelectricity" patented technology

The invention relates to a method for controlling a virtual power plant that is composed of a battery and hydroelectric power plants and is connected to a power grid. The virtual power plant is subject to an overall power setpoint exceeding the operational limit of the battery. A first setpoint is sent to a local controller of a hydroelectric power plant, the first setpoint not taking into account hydroelectric power measurements but depending on an order of priority and on limits of the battery. Next, a second setpoint is provided, based on measurement of the overall power of the hydroelectric power plants. Simultaneously, the battery receives a third setpoint adjusted depending on the overall setpoint and the hydroelectric power measurements. The setpoints aim to maintain the stability over time in the overall power supplied by the virtual power plant, in compliance with the requested power setpoint.

The invention discloses an intelligent inspection method and system for an all-terrain self-adaptive hydroelectric AI bionic robot, and relates to the technical field of robots, and the method comprises the steps: constructing a terrain stiffness matrix based on a laser radar, an IMU and a foot end force sensor, and driving a bionic joint group to carry out the intelligent switching of a wheel mode, a six-foot gait mode and an adsorption mode; for equipment defect identification, visible light, infrared and laser point cloud data are fused, and crack / corrosion classification is realized by adopting a contrast learning migration model; a dynamic risk grid map is generated in combination with the equipment fault history, the environment corrosion rate and the task emergency degree, the inspection path is optimized through an MOEA / D-TOPSIS algorithm, and multi-target balance of energy consumption and path length is achieved on the premise that the coverage rate is guaranteed; the positioning system integrates Beidou RTK, UWB anchor points and inertial navigation, and combines a dynamic SLAM enhancement technology, so that centimeter-level positioning precision under strong electromagnetic interference and satellite rejection environments is ensured, and an all-weather and all-terrain intelligent inspection solution is provided for hydroelectric facilities.

Conventional hydropower plants require significant hydrostatic head to produce sufficient power. As such, there is a need for efficient hydropower plants that may be utilised in sites having a low hyd

The embodiment of the invention relates to the field of hydroelectric generation, in particular to a hydropower station power generation equipment safety monitoring method based on generator set temperature monitoring. One specific embodiment of the method comprises the following steps: collecting sensing data of a generator set; constructing a multi-modal feature extraction model of the power generation equipment; inputting the sensing data of the generator set into the multi-modal feature extraction model to obtain multi-modal feature extraction data; performing safety monitoring processing on the multi-modal feature extraction data to generate equipment safety data; and scheduling the hydropower station power generation equipment based on the equipment safety data. According to the embodiment, the operation safety and the operation and maintenance efficiency of hydropower station equipment can be improved.

The invention relates to the technical field of virtual power plants, and discloses a virtual power plant optimal scheduling method and system based on multi-type energy storage collaboration, which solves the problem that the existing virtual power plant cannot accurately predict the generating capacity, and comprises a scheduling system body, an energy storage subsystem and a power generation system, the energy storage subsystem is connected with the dispatching system body, and the dispatching system body and the energy storage subsystem are both connected with the power generation system. The dispatching system body is composed of a centralized control platform, a solar power generation regulation and control module, a wind power generation regulation and control module, a hydropower station power generation regulation and control module, a thermal power generation regulation and control module, a power consumption prediction subsystem, a data analysis module, an adjustable load integration module and an optimal configuration module. By means of the scheduling method and system, accurate prediction of wind energy, solar energy and hydroelectric power can be achieved, and electric energy scheduling is more refined.

The application relates to a zero-voltage step-up control method and system for a hydropower plant, which comprises the following steps: controlling the rotating speed of a generator set to a rated rotating speed, and establishing an electric circuit for zero-voltage step-up; based on a zero-voltage step-up starting instruction, controlling an excitation system to gradually increase the voltage of the generator set from zero to a rated voltage according to a preset step-up strategy, and collecting operating parameters of the generator set; judging whether the operating parameters of the generator set exceed a safety threshold; if yes, performing a safety intervention operation; otherwise, after the voltage of the generator set is increased to the rated voltage, ending the step-up and generating test data. According to the application, based on the zero-voltage step-up starting instruction, the excitation system gradually increases the voltage of the generator set from zero to the rated voltage according to the preset step-up strategy, and the operating parameters of the generator set are collected synchronously, so that the control logic of the step-up process is solidified into a system program, and the step-up rate fluctuation and step omission caused by experience difference or negligence in manual operation are eliminated.

The invention discloses a method for evaluating the influence of wind and light absorption on the operation of a hydropower station by considering climate change conditions, which belongs to the field of reservoir dispatching in hydroelectric power generation, and comprises the following steps: carrying out short-term simulation dispatching on a water-wind-light complementary system, and extracting power abandoning results under different hydropower outputs as a wind and light power abandoning loss function with short-term dispatching characteristics; constructing a target function based on the wind-solar power abandoning loss function, and constructing a medium-and-long-term optimization scheduling model of the water-wind-solar complementary system coupled with short-term scheduling characteristics; analyzing the meteorological data to obtain a climate sudden change year and an extreme weather typical year, and according to the medium-and-long-term optimization scheduling model of the water-wind-light complementary system coupled with the short-term scheduling characteristics, calculating to obtain reservoir water level processes and hydropower station output conditions before and after the climate sudden change year and in the extreme weather typical year; and according to the reservoir water level process before and after the climate sudden change year and the extreme weather typical year and the output condition of the hydropower station, evaluating the influence of wind and light absorption on the operation of the hydropower station.

This invention relates to the field of hydropower equipment condition monitoring technology, specifically a real-time monitoring system for the operating status of hydropower units based on multi-point vibration signals. The system includes modules for multi-point vibration signal acquisition, data preprocessing, extraction of spatiotemporal coupling features from multiple measurement points, dynamic updating of adaptive thresholds for operating conditions, status identification, and real-time prediction and early warning of vibration degradation trends. This invention deploys a multi-point acquisition architecture along the vibration transmission path, constructs spatial weight coefficients based on vibration transmission characteristics to extract spatiotemporal coupling features, dynamically updates early warning thresholds by associating with unit operating parameters, achieves advanced prediction of degradation trends through a time-series model, and employs an edge-end collaborative deployment architecture. This improves the accuracy of early anomaly identification and adaptability to changing operating conditions, achieving millisecond-level low-latency real-time monitoring, and is suitable for the safe management and control of the operating status of various hydropower units.

The invention relates to the technical field of wastewater treatment, and discloses a mine wastewater iron-manganese electrolytic treatment system and method based on multi-energy cooperative power supply, and the system comprises a hydroelectric generation module, a solar power generation module, a hybrid energy storage module, an electrolytic treatment module and a control module; the control module can control the hydroelectric generation module and the solar power generation module to be started simultaneously to supply power to the electrolytic treatment module and charge the hybrid energy storage module; the control module can also control the hydroelectric generation module, the solar power generation module and the hybrid energy storage module to be started simultaneously to supply power to the electrolytic treatment module; the control module can also control the hybrid energy storage module to supply power to the electrolytic treatment module. During electrolysis treatment, self power supply can be achieved, and low cost and zero carbon emission are achieved.

The invention discloses a hydropower station optimization scheduling method and related equipment. The method comprises the following steps: obtaining the reservoir level of a target reservoir where a target hydropower station is located and a scheduling time period where a current scheduling period is located; based on an ant colony algorithm, judging whether the scheduling time period is the last but one time period in all time periods, if not, calculating a next path node, updating a preset taboo table, and judging whether one-time optimization iteration is completed or not; if yes, updating the pheromone concentration and returning to the step to judge whether the scheduling time period is the last but one time period in all time periods, if not, calculating a next path node, updating a preset tabu table and judging whether one optimization iteration is completed or not until the number of optimization iterations is larger than a preset threshold value, and obtaining a target scheduling scheme for optimal scheduling of the hydropower station; the target scheduling scheme is used for representing an optimal scheme of optimal scheduling of the hydropower station. The invention can be widely applied to the technical field of hydroelectric generation.

This application discloses a method, apparatus, and equipment for simulating the operation of integrated energy bases, relating to the fields of integrated energy base planning, design, and operation scheduling technology. The method of this application, on the one hand, decomposes the hydropower output function of a hydropower station into multiple linear equations, thus transforming a quadratic function problem into a linear function problem. This significantly reduces the difficulty of solving the problem during the simulation of the integrated energy base's operation based on the hydropower output function, thereby reducing the overall simulation difficulty. On the other hand, based on the output fluctuation coefficient and curtailment coefficient of wind and solar power stations, the output weight of the hydropower station is determined, and the power generation of the hydropower station is corrected based on this output weight. Thus, the final power generation of the hydropower station can be obtained more accurately, thereby solving the problem of poor compensation and regulation performance of hydropower stations for wind and solar power stations.

The utility model discloses a dual power supply manager based on hydroelectric generation and bathroom equipment, and relates to the technical field of bathroom equipment, the dual power supply manager comprises a hydroelectric generation energy supply module, a storage battery module and a processor, the hydroelectric generation energy supply module responds to waterway flow information of the bathroom equipment to generate power supply electric energy and evaluation electric energy, the storage battery module provides power supply electric energy for the processor and provides evaluation electric energy. The storage battery module is used for conducting a supplementary energy supply loop of the storage battery module when the evaluated electric energy is smaller than a preset supplementary electric energy value, and providing supplementary electric energy for the processor; the control unit of the processor responds to electric energy information received by the electric energy input end of the processor and provides working electric energy for a to-be-powered module of the bathroom equipment, and the electric energy information is power supply electric energy or power supply electric energy and supplementary electric energy. According to the utility model, the stable operation of each functional module in the bathroom equipment is ensured by using a dual-power supply mode, and the power supply work of the bathroom equipment is executed in a low-cost, high-practicability and high-stability manner.

The present application relates to a distributed data warehouse construction method for hydropower production equipment health monitoring, comprising: analyzing hydropower equipment data application requirements to determine the analysis theme of the hydropower equipment; constructing a data warehouse layered architecture comprising an original data layer ODS, a detailed data layer DWD, a service data layer DWS, a theme data layer DWT, and a data application layer ADS; establishing a hydropower production equipment data model; and constructing a hydropower production data warehouse physical model comprising dimension tables and fact tables. The present application realizes unified extraction, conversion and loading of various system data sources of the hydropower plant, guarantees data quality, and breaks data silos; realizes centralized and unified management of data, utilizes data backup, data security control and access permission management functions of the data warehouse to ensure data security and reliability; reduces manual workload for data collection, arrangement and management, and improves data processing and analysis efficiency.

The invention discloses a high-water-head sand-containing water flow hydropower station water turbine wear shutdown fault prediction method and an intelligent reporting system, and belongs to the field of hydroelectric power generation equipment state monitoring and early warning. The method comprises the following steps: collecting multi-source heterogeneous data in real time and fusing the multi-source heterogeneous data; a water turbine wear state comprehensive index is constructed, and the overall health degree of a water turbine flow passage component is quantified; predicting the remaining service life based on a physical mechanism and a data-driven fusion model; and dividing and dynamically adjusting a fault risk level, and generating adaptive early warning information. According to the method, sediment characteristic monitoring, vibration spectrum analysis, efficiency calculation and historical maintenance data are fully fused, risk grade evaluation and self-adaptive early warning of abrasion faults are achieved, the accuracy and the real-time performance of water turbine state monitoring are improved, meanwhile, a decision support report is automatically generated through an intelligent reporting device, and the water turbine state monitoring accuracy and the water turbine state monitoring real-time performance are improved. Power station operation and maintenance are promoted to be converted from regular maintenance to predictive maintenance, and the method has good engineering application value.

The invention relates to the field of underground powerhouse information of hydroelectric power engineering, and discloses an underground powerhouse three-dimensional model rapid construction method combining Grasshopper and Revit, comprising the following steps: S1, forming a three-dimensional terrain entity according to terrain contour line data and stratum exploration data, S2, determining a plurality of working planes on the basis of the three-dimensional terrain entity; s3, creating a drainage pipe family sample based on Revit, importing Excel data through Grasshopper to carry out parametric modeling, and generating a drainage hole curtain layout; s4, the drainage hole curtain layout generated by the Grasshopper is introduced into Revit through a Revit plug-in; and S5, performing quality inspection and repair on the constructed three-dimensional entity of the underground powerhouse. By combining Grasshopper and Revit parametric modeling technologies, rapid construction from topographic and geological data to an underground powerhouse structure entity is achieved, the problems that traditional manual modeling is long in time consumption and prone to errors are solved, meanwhile, the spatial precision of stratigraphic stratification, fracture simulation and building arrangement can be kept, and it is ensured that the model can be used for engineering numerical calculation and structural analysis.

The invention discloses a method for storing and releasing energy and obtaining geothermal energy through formation fractures of a non-communicated shaft. The method comprises the steps that an energy storage geothermal layer containing geothermal resources and not containing oil gas is recognized; high-pressure fluid is injected into a target shaft, so that a target artificial stratum fracture is generated, or a target original stratum fracture in a closed state in the target shaft in the energy storage geothermal layer is opened; normal-temperature high-pressure fluid is injected into the target wellbore, so that the width of the stratum fracture is increased, stratum rock is elastically deformed to store energy, and the fluid in the stratum fracture exchanges heat with the energy storage geothermal layer; when the width of the ground layer crack reaches the target width, the reverse exhaust pipeline is closed to enable the fluid to continuously exchange heat with the energy storage geothermal layer so that the fluid can store heat; and high-temperature and high-pressure fluid reversely discharged in the stratum fracture closing process is used for driving hydroelectric power generation equipment and geothermal power generation equipment to generate power, so that the obtained geothermal energy and the stratum rock elastic deformation energy are converted into electric energy to be released.

The present application relates to the technical field of renewable energy development and seawater desalination, and discloses a deep-geological-ocean energy coupling utilization system and a running method. The system comprises a seawater taking unit, a horizontal full-pipe pressure flow transmission pipeline, a hydraulic power generation unit, a seawater desalination unit and a deep well group unit, and is sequentially connected to form a closed loop through the deep well-pipeline combination constructed by a deep-geological engineering. The present application forms a stable triangular hydraulic distribution along the whole pipeline by artificially setting a water head difference, thereby ensuring that multiple water turbines independently work and power is stably superimposed. The present application can realize long-distance water transmission through the deep well-pipeline, utilize natural energy to assist seawater desalination, and drive reverse osmosis desalination by using the high water head pressure energy of the deep well to generate power. Surplus power can be sent out.

The application discloses a hydropower simulation method, device, equipment and medium of a comprehensive energy base, relates to the technical field of comprehensive energy base planning and design and operation scheduling, in the method, a second time length is taken as a statistical dimension, output fluctuation coefficients and abandoned electricity coefficients of wind and light power stations are counted, output weights of hydropower stations are determined based on the output fluctuation coefficients and the abandoned electricity coefficients, and the power generation of the hydropower stations is corrected based on the output weights, so that the power generation of the hydropower stations can be reduced when the output fluctuation coefficients and the abandoned electricity coefficients of the wind and light power stations are large, and the power generation of the hydropower stations can be increased when the output fluctuation coefficients and the abandoned electricity coefficients of the wind and light power stations are small. Since the output fluctuation coefficients and the abandoned electricity coefficients of the wind and light power stations are considered when the power generation of the hydropower stations is determined, the power generation of the hydropower stations obtained finally can be relatively accurate, and thus the problem that the scheduling of the hydropower stations is not accurate enough can be solved.

The utility model discloses a vertical lifting piston type water raising check valve structure applied to water hammer effect pump belongs to the field of hydroelectricity. Including valve seat, valve body, piston type valve core, be provided with water inlet channel on the valve seat, the valve body sets up the top of valve seat, and the piston type valve core sets up between valve seat and valve body vertically, and piston type valve core and fixed nut water inlet channel upper and lower opposite, the center of valve body is provided with the guide bush, and the guide bush's center is up and down movable and is provided with the guide rod, and the upper end of guide rod is connected with push -and -pull type electromagnet, and the lower extreme of guide rod is connected with piston type valve core. Compared with prior art, the water raising check valve of the application is intelligently controlled through push -and -pull type electromagnet, and the stability is strong, can automatically adjust the working condition according to actual condition, guarantees water hammer pump to run efficiency stability under different flow, pressure condition, the opening of water raising check valve is more rapid, can and drain valve synchronous, will not appear response lag, can improve the utilization of water hammer effect.

The application discloses a kind of transient stability analysis method and related device considering current limit, establish the mathematical model of hydropower system and photovoltaic power generation system;In view of the current-limiting control of photovoltaic inverter and flexible rectifier during fault, the equation of active power sent by hydro-generator before fault removal is derived according to Thevenin theorem;The analytical expression of critical removal angle of sending-out system is derived by using equal-area rule;With critical removal angle as the key index of transient stability limit of sending-out system, the influence of photovoltaic and flexible current transformer saturation current angle parameter value and water-light generation ratio on the transient stability of sending-out system is evaluated.The water-light generation ratio setting method involved in the application can effectively improve the transient stability of the system, and the research results are expected to provide certain theoretical guidance for the stable operation of future new energy power system.

A hydro-photovoltaic complementary operation chart application method for a clean energy base includes: divide a hydro-photovoltaic complementary operation chart into two sub-operation charts by runoff probability and critical probability; predict runoff and predicted photovoltaic output during the operation cycle, select the sub-operation chart by the runoff probability, determine hydropower output of a reservoir in the current month according to water level of the reservoir at the beginning of the current month and the operation area, and obtain the water level of the reservoir at the end of the current month through the runoff calculation; obtain long-term hydropower output process and reservoir level process in the clean energy base until the hydropower output and water level of the reservoir in all months of the operation cycle are calculated, and calculate hydropower generation probability to complete operation.

The application discloses a self-adaptive flexible jumper plug flow eliminating device, which comprises a monitor, a floating device and a controller. The monitor is arranged on the flexible jumper and connected with the controller, and is used for monitoring whether plug flow occurs in the flexible jumper. The floating device comprises a hydroelectric power generation device, a battery, a buoyancy cabin and an electro-magnetic device which are sequentially arranged on the flexible jumper. The hydroelectric power generation device is used for generating hydroelectric power by using sea current, and transmitting electric energy to the battery for energy storage. Two floating devices are arranged, and the electro-magnetic device of one floating device is arranged adjacent to the electro-magnetic device of the other floating device. The controller is used for receiving the monitoring result of the monitor, and controlling the buoyancy of the buoyancy cabin and the magnetic force of the electro-magnetic device according to the monitoring result. The application can self-adaptively eliminate the plug flow of the flexible jumper, and provides technical support for ocean oil and gas exploitation.

An energy managing method for managing power supply of an object building includes: determining whether the object building exists a demand for electricity replenishment according to an electricity situation of the object building; when the object building exists the demand for electricity replenishment, controlling a first valve connected with a first water pipeline to open, the first water pipeline being installed between a first water storage unit and a second water storage unit, an installation position of the first water storage unit being higher than an installation position of the second water storage unit; and using electricity generated by a hydroelectric unit to power the object building. When the first valve is opened, water flow from the first water storage unit to the second water storage unit driving the hydroelectric unit to generate the electricity. An energy managing system and a building are also provided.

This invention discloses a method and system for predicting hydropower generation. The method includes: acquiring and standardizing raw operating data of a hydropower station; applying a causal mutual information feature screening mechanism, calculating forward and backward mutual information through time-delay scanning, identifying the causal direction of features using a causal directionality discriminant formula, and generating adaptive feature weights to weight the data; inputting the processed data into an improved Informer model, which integrates a dynamic time-warped attention alignment mechanism in the decoder's cross-attention layer, learns a dynamic alignment matrix through multi-scale convolution, introduces a triple-constraint loss, and uses additive gating modulation to achieve nonlinear time alignment. This method can accurately distinguish between predictive and outcome features, effectively capture the nonlinear time-warped effect of hydrological processes, and significantly improve the accuracy and interpretability of hydropower generation prediction.

The application discloses a kind of hydrogen demand's mixed water and electricity hydrogen production cost evaluation method, and hydrogen production cost evaluation method is carried out cost evaluation by calculating the equalization hydrogen production cost of system under the minimum total operating cost of mixed water and electricity hydrogen production system;Evaluation method includes the difference characteristics based on cascade hydropower and runoff type hydropower, establishes mixed water power generation model;Establish the hydrogen energy substitution model of hydrogen demand;Utilize electrolytic cell, compressor, hydrogen storage tank, energy storage equipment to establish electric hydrogen production supply chain model;In combination with step one, step two and step three, with the minimum total operating cost of mixed water and electricity hydrogen production system as the goal, establish mixed water and electricity hydrogen production system model, solve the hydrogen production cost of evaluation system, the real operating condition of simulation hydropower can be used in the evaluation method of the application, realize the cost of mixed water and electricity hydrogen production is effectively evaluated.

The invention relates to the technical field of hydroelectric power generation engineering, aims to solve the problems that in the prior art, installation accuracy is difficult to guarantee by means of installation of travel switches depending on experience, and uniformity of all the travel switches is poor, and provides a travel switch standardized installation support system for a generator brake air brake. The mounting bracket comprises fixed bases, a horizontal adjusting assembly, a vertical adjusting assembly and a travel switch mounting seat; all the fixed bases are respectively mounted at fixed anchor points on the air brake base; the travel switch mounting seat is slidably connected to the horizontal adjusting assembly, and the two ends of the horizontal adjusting assembly are detachably connected with the fixed base. The travel switch mounting seat is slidably connected to the vertical adjusting assembly at the same time, and the two ends of the vertical adjusting assembly are detachably connected with the fixed base; the travel switch mounting seat slides on the horizontal adjusting assembly and the vertical adjusting assembly and is respectively used for realizing horizontal position adjustment and vertical position adjustment of the horizontal adjusting assembly and the vertical adjusting assembly; and the travel switch mounting seat is used for mounting a travel switch.

This enables a reduction in computational load while suppressing a decline in the accuracy of hydroelectric power plant operation plans. [Solution] An operational support device for a hydroelectric power plant according to an embodiment of the present invention comprises an evaluation function generation unit and an optimization calculation processing unit. The evaluation function generation unit generates an evaluation function based on the power output of a generator that changes over time according to the time-series amount of water used for power generation drawn from the reservoir of the dam. The optimization calculation processing unit constrains the relationship between the time-series amount of water used for power generation and the time-series power output relative to the time-series amount of water used for power generation to a predetermined operating point that changes according to the head based on the reservoir of the dam, and generates a planned value for the time-series amount of water used for power generation so as to maximize the evaluation function.

1. The name of the design product: hydropower digital display (2511-2). 2. The use of the design product: for water flow hydropower temperature display. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

A method of controlling synchronous generator exciter magnetic fields at a hydroelectric facility includes controlling field strength of a generator exciter by using pulse-width-modulation with at least one dual IGBT module. A PWM frequency of each IGBT module may be sufficient such that during an off time thereof, a magnetic field of the generator exciter does not drop more than 20%.

The invention discloses a triboelectricity flexible vibration sensor based on hydroelectric monitoring and a preparation method thereof, belongs to the field of sensor preparation, and aims to solve the problems that a traditional rigid sensor is difficult to be attached to the surface of a hydroelectric generating set, the anti-electromagnetic interference capability is poor and the low-frequency sensitivity is insufficient. The sensor adopts a multi-layer flexible structure and comprises a polyimide PI flexible substrate, a columnar PDMS negative friction electrode, a NiTi non-uniform spiral positive friction electrode and an upper electrode containing a PI-BCB substrate, a copper nanowire grid, a FeSiAl magnetic shielding layer and a GO protective layer. The sensor adopts a contact separation type working mode, realizes self-energy supply based on a triboelectricity principle, has sensitivity of dozens of times or more of that of a piezoelectric sensor at a low-frequency band of 1-100Hz, has strong electromagnetic interference resistance, can be attached to a complex curved surface of a hydroelectric generating set, realizes large-area distributed vibration monitoring, and is suitable for an unattended scene of the hydroelectric generating set.