44results about How to "Reduce the amount of abandoned air" patented technology

The invention discloses a wind abandonment decrement method based on ultra-short-term wind abandonment curve prediction, and belongs to the active dispatching field of electric engineering. Environment data, wind generator data, load data and self-defined data which are related to wind abandonment quantity are monitored and recorded; and five important parameters, including a weak correlation environment prediction index, a strong correlation environment prediction index, a strong correlation wind generator prediction index, a region load correction total quantity and region load correction difference between peak and valley, are calculated according to the four types of data, and then a wind abandonment curve prediction function is established. By virtue of the curve prediction function,an effect of prediction precision adjustment can be realized by improving data measurement frequency and adjusting the prediction calculation time intervals; and by virtue of accurate prediction on the wind abandonment power of a wind power plant, basis is provided for power grid coordination dispatching, so as to optimize frequency modulation and spinning reserved capacity, perform online unit combination optimization and economic load dispatching, and reduce wind abandonment quantity.

The invention discloses a method for determining the reserve capacity of primary frequency regulation of wind storage based on the quartile ratio wind abandonment method, which comprises the following steps: obtaining the historical data of maximum wind power generating power in each time interval of a wind farm in a day; Arranged from small to large, using the quartile method to divide the data into four parts; give the wind curtailment ratio coefficients of the four parts respectively; calculate the total reserve capacity provided by the wind storage system; consider the current state of charge of the energy storage ( SOC), calculate the adjustment coefficient; after considering the energy storage, according to the adjustment coefficient, calculate the actual reserve capacity of the wind farm; calculate the reserve capacity provided by the energy storage. The implementation of the present invention enables wind power and energy storage to cooperate with each other to provide backup capacity.

The invention discloses a power grid multiple optimization scheduling method for enhancing wind power acceptance capability, which belongs to the technical field of wind power generation consumption and aims at solving the main technical problems of insufficient power peaking capacity in a load valley period due to random volatility and intermittency of wind power and bad influences of direct participation in system peaking by nuclear power. Through building a wind power model with wind power uncertainty output based on error growth and simultaneously giving a wind power curtailment amount calculation model, a wind power output condition is predicted; with nuclear power as basic load as an example (a main power generation energy source in a different area can be used as basic load), coordinated scheduling with thermal power, hydropower, energy storage and so on is carried out, through pre-scheduling and an actual scheduling model, the nuclear power can participate in peaking through energy storage in a maximum output optimization condition, energy transfer and peak load shifting are realized, output of a clean energy source is maximized, and the acceptance capability of the new energy source is increased.

The invention discloses a wind power consumption capability model optimization control method and system. The method includes the following steps: based on wind power incoming moment and time length,calculating the wind power amount; based on the pre-established basic unit model of a resistance furnace, the wind power amount and the time length, calculating the consumable electricity of the resistance furnace and the residual electricity and the residual time; and based on the residual electricity and the residual time, calculating the number of the auxiliary equipment that are put into operation. According to the invention, the technical solution can influence the power and operation time of equipment by regulating the operation loads of the equipment and the transformer, and can changepower consumption so as to consume electricity. The method herein is easy, fast and can reduce the amount of wind curtailment.

The invention belongs to the technical field of power system operation and control, and especially relates to a high-permeability wind power isolation grid frequency control method based on a polycrystalline silicon load. The method comprises the steps: carrying out the analysis of the growing process of polycrystalline silicon, building an electrical model of the polycrystalline silicon load, carrying out the fitting of voltage and current and the radius of a polycrystalline silicon rod through combining with the industrial data, and building a polycrystalline silicon load power characteristic model; obtaining a polycrystalline silicon load power control mathematic model according to the polycrystalline silicon load power characteristic model. The method can achieve the quick changing of the consumption power of the polycrystalline silicon load through changing a wave splicing voltage and wave splicing time under the condition of giving consideration to two limiting factors: incoming rate of cooling water and the temperature of the silicon rod. The method proposes a control strategy for the response of the polycrystalline silicon load to the fluctuation of the isolated grid power under the condition of giving consideration to the diversity of the polycrystalline silicon loads. The method takes a Chifeng isolated grid as the background, enables the isolated grid to maintain stable through load response power under the condition of extreme wind power fluctuation, and verifies the correctness of the proposed control strategy.

The present invention relates to the technical field of power supply for tower elevators in wind farms, in particular to a power supply method for tower elevators and an energy storage system based on the use of abandoned wind, which uses the amount of abandoned wind power to supply power for tower elevators and uses the energy storage system when the abandoned wind is insufficient The power supply mode used as a supplementary power supply for tower elevators. Aiming at optimizing the economical configuration of the energy storage system, a model of the tower elevator energy storage system was established, and the energy storage configuration was optimized using a genetic algorithm (GS). The actual statistical data of a wind farm in Xinjiang is used to statistically calculate the abandoned wind power of the wind farm and the power used by the tower elevator. The required configuration of energy storage power and charging and discharging power is calculated through calculation examples, and the parameters of the energy storage system are optimized to minimize the operating cost of the energy storage system. The invention solves the problem of high power consumption of the tower elevator and achieves the purpose of saving energy and protecting the environment.