Offshore wind plant energy storage system optimal configuration method based on cloud model and FCM algorithm
An energy storage system and an optimized configuration technology, applied in circuit devices, system integration technology, information technology support systems, etc., can solve the problems of high cost, short life, and high cost of energy storage systems
Active Publication Date: 2021-04-16
STATE GRID FUJIAN ELECTRIC POWER CO LTD
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Problems solved by technology
Electrochemical energy storage has the advantages of high energy density and fast response speed, which is helpful to smooth the fluctuation of offshore wind power output, but at the same time has the disadvantages of short life and high cost, resulting in high cost of energy storage system, so it is necessary to smooth the effect of offshore wind power From the perspective of economy, rationally allocate the energy storage capacity and power of offshore wind farms
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[0111]The present invention selects a sea wind farm with an installed capacity of 80 mW as an example, and uses its annual output curve as data input, and the annual output of the sea wind power is seen.figure 2 Where output power data sampling interval is 10 min. Based on the wavelet pack decomposition algorithm to propose to calculate the annual output of the sea wind farm, it is obtained from the output curve of the energy storage system.image 3 . In order to make the powerful effects visualize, select the dramatic curve of the sea wind farm and the gross and mesh curve, such asFigure 4Indicated.
[0112]The relevant parameters of the energy storage configuration model are shown in Table 1:
[0113]Table 1 Related parameters of the energy storage configuration model
[0114]
[0115]By comparing the energy storage system based on historical data and the inventive, based on the marine wind farm energy storage system based on the marine wind electric field energy storage system based on the cl...
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The invention provides an offshore wind plant energy storage system optimal configuration method based on a cloud model and an FCM algorithm in an application scene of smoothing output fluctuation of an offshore wind plant. The method comprises the following steps: firstly, offshore wind power output data is processed based on a wavelet packet decomposition algorithm to obtain a daily operation curve of an energy storage system, and aiming at the problems that the clustering number is difficult to determine, the method is sensitive to an initial clustering center, the algorithm stability is relatively poor and the like when a fuzzy C-means (FCM) algorithm is used for extracting a typical energy storage output curve, an initial clustering center and a clustering number of an FCM algorithm are automatically determined by adopting a cloud model theory, and then a most representative energy storage typical operation curve set is aggregated from energy storage operation curves by applying the FCM algorithm, so that the energy storage typical operation curve set is substituted into an energy storage configuration model to determine an energy storage configuration scheme. The offshore wind power plant energy storage system is optimally configured, the investment cost of the energy storage system can be effectively saved, and offshore wind power is safely and stably connected to the grid.
Description
Technical field[0001]The present invention relates to an optimization configuration of a sea wind farm energy storage system based on a cloud model and an FCM algorithm, belonging to the field of sea energy electric field energy storage configuration.[0002]technical background[0003]As the energy crisis and environmental pollution problems are highly high, governments are actively promoting the development of new energy industries. Among them, my country's maritime wind power development is shown to have an explosive growth situation. As of the end of 2019, my country's sea wind power installed model has reached 6.84 million kW. The randomness of the sea wind power is large, the volatility is large, resulting in the imbalance of the supply and demand of the system, so that the abandonment of the air-constraint. The sea wind farm is equipped with energy storage units to smooth sea wind power fluctuations, enhance the controllability and adjustability of sea wind power. At present, the...
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Login to View More IPC IPC(8): G06Q10/04G06Q50/06G06K9/62H02J3/00
CPCY04S10/50Y02E40/70Y02E70/30
Inventor 黄海姜文瑾杨晓东易锦桂
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD