45results about How to "Reduce peak shaving pressure" patented technology

The invention discloses a power generation and power consumption organizing method and device based on a peak regulation assistance service market. According to a daily delivery curve and peak regulation power consumption curves of a C-G direct trading contract submitted by a power consumer and declarations of wind power enterprises and thermal power generating units, a market clearing model containing power consumer peak regulation assistance is built, and after market clearing is conducted, the peak regulation power consumption curve of each low-ebb peak regulation period is obtained; finally, according to potential adjustable peak electric quantity of the thermal power generating units with the potential adjustable peak electric quantity and reduced abandoned wind electric quantity of the wind power generating units with the abandoned wind electric quantity being reduced, the problems that in an existing power consumer and electric generator set direct dealing mode, the customer lacks of participation in peak regulation assistance and the load peak regulation interruption involved range is narrow are solved. According to the method and the device, on the basis of conventional electricity market dealing, the power consumer can directly participate in the peak regulation assistance service market, the peak regulation potential of the consumer is stimulated, and the abandoned wind electric quantity of the whole power grid is reduced.

The invention discloses a decision method for rolling optimization of wind and light storage cooperative scheduling. The decision method comprises the following implementation steps of: acquiring day-ahead prediction values of load, wind power of wind power farms and output power of photovoltaic power stations and data such as charging demand of each electric automobile recharging station; arranging a day-ahead plan of a next-day charging plan of each electric automobile recharging station, wherein the plan can meet energy demands of electric automobiles of each electric automobile recharging station and reduce the peak valley difference rate of equivalent load curves, so that the peak pitching pressure of the conventional machine sets is reduced, and the energy access level of renewable energy is improved; and continuously modifying the rolling of the charging plan of each electric automobile recharging station in rest time period of a current day in real time through the updated predication data acquired every hour such as the load, the wind power of the wind power farms and the output power of the photovoltaic power stations of the rest time period of the current day in the operation of the current day, so that the problem that an actual equivalent load curve smoothing effect of the current day is weakened by the charging plan of each electric automobile recharging station due to prediction errors is solved as possible.

The invention discloses a wind power grid-connected accommodation method considering DC modulation, which specifically includes the following steps: Step 1, based on the operating characteristics of DC modulation, with the goal of minimizing the comprehensive operating cost of the "source-grid-storage" system, construct a "Source-grid-storage" coordination and interaction model of wind power, thermal power, DC modulation, and energy storage systems; step 2, based on wind power fluctuation characteristics, determine the wind power grid-connected consumption strategy for "source-grid-storage" coordination and interaction; step 3 , according to the linear programming simplex algorithm to solve the "source-network-storage" coordination interaction model; step 4, based on the solution results, output the optimal wind power consumption strategy for reference by dispatchers. The invention can fully release the wind power consumption potential of the power grid, reduce the wind power abandonment rate and the unit climbing pressure, improve the peak-shaving ability of the power grid, and reduce the impact of large-scale wind power grid integration on the power grid, which is of great significance to the safe and stable operation of the power grid and engineering practical value.

The invention relates to a method for recommending an electric vehicle charging station considering multiple factors and multiple scenarios, and belongs to the field of electric vehicle charging. This method obtains the current SOC and location of the user's vehicle in real time; enters the active recommendation mode and the passive recommendation mode respectively according to whether the user initiates a charging recommendation request; in the active recommendation mode and the current SOC of the vehicle is less than the set threshold, or in the passive recommendation mode And when the user does not set a charging target, according to the index value corresponding to each charging station and the current weight corresponding to each index, the score of each charging station is calculated and sorted, and finally the user's charging station recommendation result is obtained. This method comprehensively considers multiple factors, combined with user preferences, considering distribution network load rate, user behavior scenarios and user application scenarios, taking into account various goals such as the shortest charging time for users, the lowest charging cost, and the most balanced grid load, etc., intelligently for Users give recommendations.

The invention discloses an electric automobile charging planning method and system with wind power as a priority, a terminal and a medium. The intelligent electric automobile charging planning methodcomprises the steps that the initial value of remaining power, rated charging power, the maximum allowable charging power and the minimum allowable charging power of an electric automobile are read; an expected remaining power percentage threshold value at the moment when the charging time is end and charging completed is obtained, and whether the remaining power percentage end value is greater than or equal to the remaining power percentage threshold value or not is judged when the charging time is end; if yes, a wind power output prediction curve at the certain day is obtained, and an electric automobile is charged with the rated charging power, or the maximum or minimum allowable charging power or the dynamic equivalent wind power according to the wind power output prediction curve; andif not, selection buttons used for prolonging the charging time or shortening the remaining power percentage threshold value are provided. According to the electric automobile charging planning method and system with the wind power as the priority, the terminal and the medium, active consumption of surplus wind power can be facilitated, pressure of a power grid pitch peak is lowered, and the device using rate of a wind power field is increased.

The invention discloses a time-division multi-frequency control method for improving new energy absorption of a power grid, and relates to the field of power system running control and new energy absorption. The time-division multi-frequency control method comprises the steps of constructing a time-division multi-frequency robustness control model of the power grid; taking a dispatching expectation relation between uncertainty absorption quantity demand and load frequency response as a state equation; adding a feedback weighting equation into a feedback step of the robustness control module; and finally, building a solution equation of the time-division multi-frequency robustness control model of the power grid, and achieving optimal proveness and solution of the model. By implementing the optimal solution of the time-division multi-frequency robustness control model of the power grid, the uncertainty fluctuation of virtual frequency following with new energy can be achieved, the expectation relation in the state equation is met, the obtained virtual frequency control quantity is in equivalent response to a corresponding frequency modulation unit during actual running, and the expected absorption of the power grid on new energy power generation quantity is finally achieved.

The invention belongs to the technical field of power grids, and in particular relates to a method for coordinating and maximizing the electric heat storage load and battery energy storage to reduce the peak-valley difference, which is to reduce the peak-valley difference of the power grid to the greatest extent through the coordinated operation of the electric heat storage load and battery energy storage Difference. The present invention includes data acquisition; forecast calculation of household load during peak hours; calculation of the influence of electricity price A on the increase of electric heat storage load at low valley times; calculation of battery energy storage charge and discharge coefficient; calculation of battery charge and discharge time; according to the above influencing factors and At peak and trough moments, it is calculated by minimizing the peak-to-valley difference. The invention can alleviate the peak regulation pressure of the unit, and can relieve the output of the thermal power unit at the peak time, so that the peak regulation pressure of the thermal power unit is reduced. It is possible to formulate corresponding electricity prices based on the difference in electricity consumption in different periods, and through the cooperation of batteries to cut peaks and add valleys, the difference between peaks and valleys can be minimized.