70 results about "Peak load" patented technology

The invention discloses a bus peak load prediction method fusing transfer learning and peak load adaptive identification, and the method comprises the steps: constructing a dynamic weight-driven transfer learning framework, and achieving the precise migration of multi-source bus knowledge to a target bus; introducing a self-adaptive threshold mechanism based on load volatility and a peak value proportion, and dynamically identifying peak values and conventional load time periods; and designing a customized loss function for strengthening the peak error weight and using the customized loss function for fine adjustment of the model, thereby remarkably improving the load prediction precision of the bus in a key period. The target bus prediction precision is obviously improved through multi-source bus transfer learning; a self-adaptive threshold identification mechanism realizes dynamic judgment of a peak time period sensitive to load fluctuation, and the perception capability of the model to a key load time period is enhanced; through the synergistic effect of the technical means, the overall prediction accuracy is finally improved, meanwhile, the prediction precision and stability of the peak load are remarkably improved, and the actual requirements of a power grid for high precision and high robustness of load prediction are met.

The invention relates to the field of electric power systems, in particular to an energy storage dynamic optimization scheduling method and system of an electric power system and a storage medium, and the method comprises the steps: S1, building an energy storage dynamic calculation model; s3, energy consumption models of a water chilling unit, an air source heat pump, a water pump and a cooling tower are established respectively, and instantaneous energy consumption under different working conditions is calculated by considering operation working conditions and environmental parameter correction; and S4, outputting the utilization rate, the maximum adjusting power, the average adjusting power, the maximum adjusting capacity proportion and the accumulative adjusting electric quantity proportion of the energy storage device, and carrying out quantitative evaluation. According to the method, supply and demand state changes such as valley load, flat load, peak load, peak load and the like of the power system can be identified in real time / quasi-real time, the time periods and power of energy storage and energy release are adjusted, dynamic power distribution of a host in each load time period is realized, and the overall energy efficiency level and operation stability of the system are improved.

The invention discloses a distributed power supply energy storage configuration method and device. The method comprises the following steps: identifying peak load characteristics of a user side based on historical load data; analyzing output data of the distributed power supply according to the historical power generation data; establishing an energy storage optimization configuration model by taking maximization of user economic benefits as an optimization target; a double-layer optimization method is adopted, based on the energy storage optimization configuration model and peak load characteristics, a charging and discharging plan of the energy storage system is optimized at the upper layer, and a dynamic scheduling strategy is optimized at the lower layer; the real-time electricity price and the user load are predicted in a rolling mode, a dynamic scheduling strategy is combined, a charging and discharging plan is further corrected in the operation process of the energy storage system, the consumption proportion of renewable energy sources is optimized in combination with output data, and the energy storage system and the distributed power supply are made to operate cooperatively. According to the invention, optimal configuration and efficient scheduling can be carried out on the distributed power supply and the energy storage system at the user side.

The invention discloses an urban rail energy consumption scheduling method based on artificial intelligence multi-objective optimization, and the method comprises the steps: effectively solving a problem of scheduling decision limitation caused by a single optimization objective in the prior art through comprehensive real-time data processing, multi-objective collaborative optimization and intelligent algorithm iteration solution; the optimal control of the overall operation energy consumption of the rail transit system is realized; the train operation energy efficiency, the regenerated energy utilization rate and the operation punctuality rate are effectively improved, meanwhile, the peak load of a traction power supply system is reduced, the overall energy utilization efficiency and the operation performance of rail transit are remarkably improved, and the dual purposes of energy conservation, consumption reduction and efficient operation of the system are achieved.

Operators typically utilize techno-economic means to set peak power demand in power infrastructure sites, such as power depots and microgrids. However, conventional means tend to either produce sub-optimal values of peak power demand or be too computationally expensive to be performed in a real-time or scalable manner. Accordingly, disclosed embodiments utilize a sliding time window to continuously or periodically determine peak power demand in past, current, and future portions of a current time period. These embodiments are able to determine an optimal peak power demand for the current time period, while remaining computationally feasible for real-time performance and being scalable with the complexity of optimization.

The invention discloses a peak load shifting potential evaluation system based on two-stage clustering, and the system is characterized in that a load data collection module is used for collecting historical power load data of a specified user, thereby obtaining a power load curve of the specified user during the implementation period of a peak load shifting project; the clustering analysis module is used for performing clustering analysis on the power load curve of the specified user during the implementation period of the peak load shifting project to obtain a user typical load curve set and a user power utilization regularity parameter; the power consumption mode determination mode is used for performing DTW and kmeans clustering analysis on the user typical load curve set to obtain a user power consumption mode; and the peak valley filling potential evaluation module is used for calculating a peak load shifting response factor according to the user power consumption mode parameter and the user power consumption regularity parameter, and calculating the peak load shifting potential of the user according to the peak load shifting response factor. According to the method, the peak load shifting potential evaluation of the user can be completed only according to the historical power consumption data.

The invention relates to a high-temperature superconducting cable economical efficiency analysis method for urban power capacity increase, and belongs to the field of superconducting application. The method comprises the following steps: acquiring population data, electric vehicle permeability and charging pile configuration data of an urban area, and predicting the number of public charging piles and private charging piles newly added in the urban area; predicting a newly added load peak interval according to the predicted number of the public charging piles and the predicted number of the private charging piles in combination with an automobile charging coincidence rate; designing a superconductive low-voltage capacity increasing scheme based on the newly added peak load interval; acquiring system line loss data of the superconducting low-voltage capacity increasing scheme under different load conditions; and obtaining the annual operation and maintenance cost of the superconductive low-voltage capacity-increasing scheme based on the system line loss data, and carrying out economic analysis on the superconductive low-voltage capacity-increasing scheme based on the annual operation and maintenance cost. The objective of the invention is to solve the problems of lack of systematic economic evaluation means and difficulty in accurately judging the economic applicability of the high-temperature superconducting cable under the background of urban capacity increase in the prior art.

The invention discloses a new energy automobile charging pile layout optimization method based on big data analysis, and relates to the technical field of charging pile layout management. The method comprises the following steps of layout response judgment, layout test verification and layout decision training optimization. According to the method, the peak load response capability in the prediction process is quantitatively judged, so that the condition of charging pile overload or resource waste in the peak period can be effectively reduced, and the balance and adaptability of charging facility configuration are remarkably improved. Through layout decision response optimization, the response precision and timeliness of the model to peak load sudden change can be improved, and meanwhile, through obtaining a layout test verification result, the layout accuracy and the use efficiency of charging pile resources can be further improved. On the basis, charging pile planning layout decision training optimization is introduced, so that the charging pile layout decision is more accurate and higher in adaptability, and the actual effect and reliability of the layout decision are improved.

The present application provides an optimization scheduling method considering the participation of chicken house flexible resources in power distribution network peak load shifting, and relates to the cross technical field of facility agriculture and power grid optimization scheduling, which comprises the following steps: based on the industry load in the whole cycle, using the heat production equation and mechanism model equation of cage chicken house application scene, a typical cage chicken house daily constant temperature energy demand model is constructed; based on the constructed typical cage chicken house daily constant temperature energy demand model, the cage chicken house load is classified, and the classified load is superimposed to construct a load flexibility potential model; based on the constructed load flexibility potential model and the power grid peak load shifting model of adjustable load, by setting the objective function and constraint condition, and using the model optimization algorithm, the optimization scheduling scheme of power distribution network peak load shifting is obtained. The power grid peak load shifting model based on adjustable load constructed by the present application smooths the load curve of power grid, and realizes the economic operation of power grid.

The present invention discloses a method for load forecasting and adjustment of a distribution network, which relates to the technical field of load forecasting of distribution networks. The method comprises the following steps: based on the management areas of different distribution networks in a city, the usage types of the distribution network are divided into residential, commercial, industrial, and mixed types, a city distribution network database is established, and distribution network archives are established based on the types; daily load data of different distribution networks in different historical months are collected, hourly predicted peak loads of different regions are calculated based on temperature intervals, and predicted surplus loads and predicted deficit loads are obtained in combination with the planned loads of different distribution networks, and surplus load time intervals and deficit load time intervals of different regions in different months are divided. The present invention predicts the load of the distribution network in combination with the characteristics of the management area of ​​the distribution network, and performs profit and loss management pairing on the distribution network in combination with the predicted load, thereby enhancing practicality and functionality.

The application discloses a thermal power unit transfer state peak load cruise control method based on an intelligent control algorithm and relates to the technical field of load coordination control. The thermal power unit transfer state peak load cruise control method based on the intelligent control algorithm determines the load demand change condition by classifying and processing data, realizes internal coordination of the thermal power unit based on the load demand change condition, realizes control operation on various factors in the boiler, analyzes the time for generating and implementing the instruction and the setting of the threshold value in the boiler, completes compensation and optimization of the coordination strategy through a compensation algorithm, completes the prediction operation when the load changes, analyzes the safety condition by using historical big data, obtains the desired prediction time, traces the corresponding load demand according to the prediction time, gives enough time to complete the coordination operation in the load supply process, and guarantees the operation safety of the thermal power unit.

The application discloses a kind of measuring crusher load benchmark value operation method and crusher control method, control system in crusher gathers the load of crusher once in a period of time, long enough time is continuously collected;The average of these load values is reference value A0, A0 is comprehensive load benchmark value;The average of load value greater than A0 is peak load benchmark value A1;The average of load value less than A0 is low load benchmark value A2;Control system automatically records above numerical value, and as the benchmark value of load related parameter;Control system statistics in a certain period of time, the number of load value greater than or equal to A1, and the average value N in the whole test data is calculated as peak quantity benchmark value;The number of load value less than or equal to A2 and the average value M in the whole test data are calculated as low load quantity benchmark value;These parameter values are automatically or manually changed after the next operation benchmark load test function;Make crusher can maintain optimal performance, maintain efficient work.

The present application relates to the technical field of elevator car, and discloses a kind of elevator car buffer system of sectional energy-absorbing structure, including shaft, shaft is provided with car, shaft and car are jointly provided with traction part, guide part and counterweight part, shaft and car are also jointly provided with buffer part, shaft and counterweight part are jointly provided with rail holding deceleration part.The elevator car buffer system of sectional energy-absorbing structure can effectively solve the problem that elevator buffer system exists in the process of car overspeed impact in the prior art, energy-absorbing response lag in initial buffering, impact process load distribution is uneven, and peak load at the end is seriously over-standard;And the end buffer in the elevator car buffer system does not have a matching rigid locking structure, rebound and secondary bounce will occur after the car is buffered, further exacerbating the problem of personnel injury and equipment damage.

The invention discloses a power system low-carbon operation optimization method and system. The method comprises the steps of S1, collecting multi-source operation data in a target power grid dispatching period; s2, an optimal scheduling model is established based on the multi-source operation data, a target function is the weighted sum of economic cost and carbon emission cost, and limiting conditions include unit operation limitation, system power balance limitation and safe operation limitation; s3, introducing a demand side response variable and constraint into the optimal scheduling model, establishing a mathematical model of an interruptible load and a peak-shifting load, and bringing the power adjustment amounts of the two types of loads into system global power balance calculation; and S4, solving the optimization scheduling model after introduction of the demand side response variables and constraints by using a hybrid intelligent optimization algorithm, and outputting a scheduling scheme including a unit output plan and an adjustable load response plan. Through the improved optimization scheduling model and algorithm, a scheduling scheme for reducing power grid carbon emission, peak load shifting and guaranteeing operation safety can be output.

The invention discloses a main transformer peak load prediction method based on electric power big data, and relates to the technical field of electric power systems. According to the method, the external influence data is subjected to combination and dimension reduction through rapid classification of the data by using a data classification result, so that the operand is greatly reduced, the prediction speed is improved, and the association relationship between the load data and the external influence data can be reserved to the greatest extent by the classification and dimension reduction method; therefore, the prediction accuracy is not influenced by using the external influence data after dimension reduction. According to the method, a large amount of historical data generated by operation and management of a power system is counted, analyzed, predicted and evaluated, information for scientific decision-making of a power enterprise is rapidly and accurately extracted from the historical data, a basis is provided for rapidly and accurately predicting the peak load change of a main transformer in the future, and the data mining processing method is established by establishing a data warehouse system. Accurate and reliable peak load prediction of the main transformer is realized, and the system is reasonably dispatched to operate safely and economically.

The invention provides a power distribution area distributed power supply autonomous consumption method based on source-load complementation, and the method comprises the following steps: S1, constructing a power distribution area model based on source-load complementation based on a power distribution area model based on source-load complementation; s2, establishing a day-ahead optimization regulation and control model according to the power distribution area model obtained in the step S1; and S3, solving the branch power flow by adopting the power distribution area branch power flow model obtained in the step S2 according to an optimization target in combination with a constraint condition. After the method provided by the invention is applied to optimized scheduling, the new energy consumption rate of a power distribution area is improved from 81.2% to 83.2%, and response scheduling of the electric vehicles in different time periods effectively promotes new energy consumption and peak load shifting, reduces the main network electricity purchasing and network loss cost, and realizes reduction of the total cost. According to the invention, the absorption capability of the distributed power supply is improved, and the operation economy of the power distribution network is improved.

The invention relates to a demand response power consumer peak load management method and system and a medium, and the method comprises the steps: collecting hourly power consumption data of a consumer within a certain time range, and carrying out the preprocessing of the data, including abnormal value analysis and missing value filling; determining a target time period in which peak load optimization needs to be performed, performing descending order arrangement on the power data in the time period, and drawing a power duration curve in the time period; on the basis of a data smoothing method, a smoothed power duration curve is obtained, so that the overall change trend of the curve can be known; based on a marginal effect rule, determining an optimal hour number of user peak value optimization; and calculating a user peak reduction proportion corresponding to the optimal optimization hours, and estimating self electric charge which can be saved by the user through participating in demand optimization, thereby realizing economic potential evaluation. According to the method, the optimal peak clipping hours and the peak clipping amount of the user are accurately quantified, and an effective evaluation means is provided for screening demand optimization potential users of a power system.

The invention discloses a daily peak load prediction method and system based on graph regularization regression. The method comprises the following steps: acquiring multi-source historical data for daily peak load prediction; constructing multi-source features based on the multi-source historical data; establishing a feature association graph based on the multi-source features, and constructing a graph Laplacian matrix based on the feature association graph; constructing a graph regularization regression model based on the graph Laplacian matrix; solving the graph regularization regression model, determining an optimal parameter of the model, and determining an optimal model based on the optimal parameter; and predicting a future daily peak load based on the optimal model. According to the method, the daily peak load prediction model based on graph structure regularization regression is constructed, efficient and stable model solving is realized through the association relationship between feature graph modeling features and in combination with an alternating direction multiplier method ADMM, the future daily maximum load is predicted with high precision based on the model, the load peak can be accurately predicted in advance, and the prediction efficiency is improved. And important decision support is provided for power dispatching operation.

The invention discloses a multivariate energy storage scheduling method and equipment considering an equivalent peak-valley difference, and belongs to the technical field of power system operation and control. A microgrid net load time sequence is obtained, a scale coefficient is constructed based on the ratio of the rated power of a rapid energy storage unit to the historical peak net load, and a target quantile is determined through a piecewise linear function; an equivalent peak-valley difference is defined, and a peak, valley and climbing section criterion is given; on the basis, a rapid energy storage unit and an energy type energy storage unit are distinguished, the rule of first rapid and then slow and first power and then energy is adopted, peak clipping is preferentially carried out in a peak section, charging is preferentially carried out in a valley section, and the power change rate is limited in a climbing section. The power and energy plan of each energy storage unit is generated hour by hour in combination with constraints such as power upper limit, energy state, round-trip efficiency and charge and discharge mutual exclusion, statistical peak load shifting and climbing suppression without complex optimization modeling is realized, and the engineering applicability of multi-element energy storage cooperative operation is improved.

This application discloses a planning-oriented multi-scale peak load forecasting method based on attention networks, belonging to the field of attention network technology. The method includes: determining a target power grid; collecting historical window load data of the target power grid according to a preset time window; constructing multi-scale power grid window load characteristics by combining an attention mechanism; setting a planning-oriented error penalty factor; training and generating a peak load predictor based on the error penalty factor; processing the multi-scale power grid window load characteristics through the peak load predictor to obtain peak load prediction values; and generating a power grid equipment expansion plan based on the peak load prediction values. This method solves the technical problems of existing forecasting methods neglecting the actual economic impact of forecasting errors on power grid planning and lacking effective fusion and utilization of multi-time-scale load characteristics, resulting in low accuracy and reliability of forecasting results.

The utility model discloses an air conditioning system based on peak load shifting, which comprises an energy supply main pipeline, a water tank and a heat exchanger, the water tank is connected into the energy supply main pipeline through the heat exchanger, a first energy supply pipeline, a second energy supply pipeline and a third energy supply pipeline are arranged between the water tank and the heat exchanger, and the first energy supply pipeline is connected with the heat exchanger. And the flow direction of cold / hot water is changed to adjust the cold / heat storage working condition or the cold / heat release working condition. The operation of the system is mainly controlled through the switching of related valves in the pipeline, cold storage or heat storage is carried out by using the water tank in the off-peak electricity period, and cold release or heat release is carried out in the peak electricity price period, so that the operation cost of a user side can be reduced, and the effects of peak load shifting can be achieved on a power grid side.

The application discloses a kind of step time-of-use electricity price optimization method and terminal, first, by clustering algorithm determines electricity price number and the electricity corresponding to each number, can make each grade electricity limit more in line with actual situation, improve its objectivity and applicability;Further, according to Ramsey pricing is priced for the electricity of each number, using moving boundary technology on time-of-use electricity price optimization, can effectively improve the accuracy of time period division;And with the minimum peak load and peak valley difference as target setting target function, in combination with time period and the price setting constraint condition of each number, establish step time-of-use electricity price optimization model, while not affecting the power demand of daily life of resident, can effectively guarantee the smooth implementation of peak clipping and valley filling strategy, to guide resident reasonable electricity, realize the balanced allocation of electric power load.

A method of predicting a peak load in response to a test scenario comprises: for each of a plurality of configurations of a vehicle 104, obtaining a peak load value for that configuration of the vehic

The invention relates to a public building power-saving effect evaluation method and device based on a sendible temperature similar day, and the method comprises the steps: determining a temperature similar day corresponding to a to-be-evaluated day based on the sendible temperature of the to-be-evaluated day; determining the reference peak electric quantity of the temperature-similar day and the reference peak load of the temperature-similar day; determining the accumulated saved peak electric quantity of all public buildings on the to-be-evaluated day by using the reference peak electric quantity of the temperature similar day; determining the maximum peak pressure drop load of the public building on the to-be-evaluated day by using the reference peak load of the temperature similar day; and determining the power-saving effect of the public building according to the accumulated saved peak electric quantity of the public building on the to-be-evaluated day and the maximum peak voltage drop load of the public building on the to-be-evaluated day. According to the invention, the power saving effect of the public building monomer and different types of public buildings can be quantitatively evaluated from the two aspects of power saving and power saving, so that the accurate evaluation of the power saving effect of the public buildings is realized.

The invention discloses an energy storage peak load shifting optimization scheduling method based on sensitivity analysis, and belongs to the technical field of energy storage optimization scheduling, and the method comprises the steps: 1, obtaining the power load demand, the carbon emission coefficient of a power grid g, the power of an energy storage system s, the capacity of the energy storage system s, and the maximum demand; 2, constructing an energy storage peak load shifting model of the criterion of maximum contribution of daily net carbon emission reduction; and 3, solving the energy storage peak load shifting model to obtain an optimal charging and discharging scheme of the energy storage system. According to the method, the optimal energy storage charging and discharging strategy can be obtained, so that the net carbon emission reduction contribution of the energy storage system can be maximized, and an effective solution is provided for solving the problem of energy storage peak load shifting large-scale optimization engineering.

The invention relates to an automobile charging pile energy consumption optimization method and system based on charging demand prediction, and relates to the technical field of automobile charging piles, a shared load pool is constructed and intelligently divided into shared load modules, refined partition management of charging loads is achieved, the load of each module is accurately estimated by using a fusion prediction model, and the energy consumption of the charging pile is optimized. According to the method, the peak load of the regional power distribution network can be effectively reduced, the overall utilization efficiency of charging facilities is improved, meanwhile, the charging requirements of users are guaranteed, and dual optimization of safe and economic operation of the power grid is achieved.

The invention relates to a system and a method for calculating annual peak and deep adjustment capability of a power system in a power spot market, which realize unified evaluation of adjustment capability of a power generation side and a power utilization side through a supply and demand integrated architecture of data input, quotation modeling, market clearing, capacity authentication and result output, and realize accurate evaluation of the adjustment capability of the power generation side and the power utilization side based on refined analysis of 8760 hours in the whole year. And the actual operation characteristics of the power system are accurately reflected. And in combination with fuel, wear, environmental cost and other models, a scientific basis is provided for optimal configuration of electric power resources. And source-load double-side coordinated regulation evaluation is realized, the power utilization side peak load shifting capability is taken into consideration of system flexibility, and the new energy consumption capability and the power grid safety are improved.

The application discloses a diagnosis method of key state points of post-peak unloading of a thin-walled structure, and particularly relates to the field of thin-walled structure performance analysis. The method comprises the following steps: obtaining a displacement sequence, a load sequence, an external work sequence and an elastic strain energy sequence of a composite material with a thin-walled structure in a loading process; determining the cumulative dissipation energy of each displacement point according to the difference between the external work sequence and the elastic strain energy sequence; determining the dissipation energy change rate of each displacement point according to the cumulative dissipation energy and the displacement sequence; determining the tangent stiffness spectrum of each displacement point according to the load sequence and the displacement sequence, so as to obtain a tangent stiffness spectrum sequence; obtaining a displacement point corresponding to a maximum load as a peak load point; determining a damage starting point in the displacement sequence according to the dissipation energy change rate; and determining an unloading inflection point in the displacement sequence according to the tangent stiffness spectrum sequence. Based on the above method, the reliability of a diagnosis conclusion can be improved.

The invention provides a transformer base installation stability and bearing capacity analysis method, which comprises the steps of performing fusion processing on a static stability index and a dynamic impact risk index to obtain a comprehensive risk coefficient, and combining the comprehensive risk coefficient with an oil liquid shaking period duration to determine an oil liquid shaking amplitude expansion amount under earthquake excitation; analyzing instantaneous dynamic load distribution of the base according to the peak value of the impact force in combination with the three-axis vibration acceleration signal of the base, identifying a load peak moment in the instantaneous dynamic load distribution of the base, and extracting a maximum impact load borne by the base corresponding to the load peak moment; the bearing margin of the base is evaluated according to the maximum impact load in combination with the rated bearing capacity of the base, and the dynamic bearing capacity grade of the base is determined according to the bearing margin.

The invention belongs to the field of coal mining, and discloses an advancing type working face propulsion control method and system, which dynamically optimizes the operation time sequence and action parameters of each device by deeply sensing the operation parameters and energy consumption characteristics of the device in combination with load trend prediction and risk assessment, thereby effectively stabilizing the overall instantaneous total power load of the working face, and improving the working efficiency. 'Peak clipping and valley filling' of energy consumption is realized, the overall instantaneous total power load of a working face can be effectively stabilized, the impact of a power supply system is reduced, the energy utilization efficiency is improved, and the service life of equipment is prolonged.