Wind-power trend optimizing system based on fast energy storage and control method thereof

A control method and energy storage technology, applied in wind power generation, single grid parallel feeding arrangement, etc., can solve the problems of multi-harmonic, flicker frequency, pollution, etc. of the power grid
CN102496967AInactive Publication Date: 2012-06-13SHANDONG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANDONG UNIV OF TECH
Publication Date
2012-06-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

A wind-power trend optimizing system based on fast energy storage and a control method thereof belong to the technical field of wind-power power adjustment control in the new energy power generation technology. The wind-power trend optimizing system based on fast energy storage comprises a storage battery pack (1), a direct current power adjustment system (2), a super-capacitor group (3) and an alternating current and direct current power adjustment system (4). The direct current power adjustment system (2) adopts a plurality of groups of shunt-wound bidirectional Buck-Boost current transformation topologies, the storage battery pack (1) is located on the low voltage side of the direct current power adjustment system (2), the super-capacitor group (3) is located on the high voltage side of the direct current power adjustment system (2), and an energy storage link is connected with a public power grid through the alternating current and direct current power adjustment system (4). The control method of the wind-power trend optimizing system based on fast energy storage comprises an energy storage power distribution control method and a trend optimizing control method, and relates to an energy storage component charging state system on a chip (SOC) zone division method and dynamic adjustment rules of energy flow between the system and the power grid. The wind-power trend optimizing system based on fast energy storage and the control method thereof can improve power grid electric energy quality and stability and safety of the system.
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Description

technical field

[0001] A fast energy storage-based wind power flow optimization system and a control method thereof belong to the technical field of wind power power regulation and control in new energy power generation technology. Background technique

[0002] As an energy source, the biggest defect of wind energy lies in its instability, discontinuity and uncontrollability. After the grid-connected wind turbines reach a certain degree of penetration, the fluctuation of their output power will lead to frequent changes in the magnitude and direction of the power grid tidal current. Cause grid voltage fluctuations, flicker and frequency instability. In addition, since most wind turbines need to be connected to the system through power conversion devices, these power conversion devices will bring more harmonic pollution to the grid while controlling the active and reactive power of the units. A wind power system with a certain infiltration capacity will cause serious stabilit...

Claims

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