Method and system for tracking wind and electric output plans through energy storage based on predictive power of wind and electricity
A technology of energy storage system and wind power, applied in wind power generation, electrical components, energy storage, etc., can solve the problems that the output requirements of the energy storage system cannot be guaranteed, and the charging and discharging of the energy storage system lacks overall consideration, so as to achieve real-time optimization of charging and discharging The effect of controlling coefficients and improving the ability to track planned effort
Active Publication Date: 2015-07-15
STATE GRID CORP OF CHINA +1
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In the prior art, there are proposed energy storage system operation strategies applied to the tracking of short-term planned output in wind farms, but they only consider the output control at the curr
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[0037] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. These embodiments of the present invention may be referred to herein, individually or collectively, by the term "invention", which is for convenience only and is not intended to automatically limit the application if in fact more than one invention is disclosed The scope is any individual invention or inventive concept.
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The invention provides a method and system for tracking wind and electric output plans through energy storage based on predictive power of wind and electricity. The method comprises the following steps: reading the relevant data of a wind power field and an energy storage system; establishing a charging and discharging control strategy of the energy storage system; confirming a target function; confirming charging and discharging control coefficients through a particle-swarm optimization algorithm; confirming the charging and discharging power of the energy storage system according to the charging and discharging control coefficients. The system comprises an acquisition unit, a control unit, a calculating unit, an optimizing unit and a result outputting unit. According to the method and system, each predictive point performs roll poling at a time, and the purpose of optimizing the charging and discharging control coefficients of an energy storage power station in real time is achieved through the particle-swarm optimization algorithm, so that the limited capacity of the energy storage system can be sufficiently utilized; in addition, the target function is set, so that the stage of charge of the energy storage system is kept in an appropriate range as much as possible, the charging and discharging capabilities of the energy storage system are further improved, and finally the capability of tracking planning output, of a wind-storage association system, is improved.
Description
technical field [0001] The invention belongs to the technical field of energy storage and conversion in smart grids, and specifically relates to a control method for improving wind power tracking plan output capability by considering short-term wind power prediction and ultra-short-term wind power prediction by using an energy storage power station. Background technique [0002] In recent years, with the continuous expansion of the scale of wind farms, their randomness and intermittency have caused a huge impact and impact on the safety, stability and power quality of the power grid. It is an important tool for safety and improving wind power efficiency. The size of wind power prediction error affects the up / down reserve capacity required by the system, which is of great significance to the safety and economy of power grid operation. Establishing strict intermittent power grid-connected standards is of great significance Significance. In 2011, my country formulated the "Int...
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Login to view more IPC IPC(8): H02J3/32
CPCH02J3/32H02J3/386Y02E10/76Y02E70/30
Inventor 李相俊闫鹤鸣惠东贾学翠王立业麻秀范郭光朝张亮杨水丽胡娟王松岑
Owner STATE GRID CORP OF CHINA
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