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Wind power plant electric energy quality optimization system based on energy storage

A power quality and wind farm technology, applied in the field of wind farm power quality optimization system based on energy storage, can solve the problems of large terminal voltage fluctuation range and low energy density, and achieve optimized power quality, large energy storage capacity, and extended use. effect of life

Inactive Publication Date: 2018-01-30
锐电科技有限公司
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Problems solved by technology

Its disadvantages are mainly low energy density and large fluctuation range of terminal voltage.

Method used

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  • Wind power plant electric energy quality optimization system based on energy storage
  • Wind power plant electric energy quality optimization system based on energy storage
  • Wind power plant electric energy quality optimization system based on energy storage

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Embodiment Construction

[0026] The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0027] Such as figure 1 As shown, it is a schematic structural diagram of a wind farm power quality optimization system based on energy storage in the present invention. The present invention includes a wind farm hybrid energy storage device 1, and the wind farm hybrid energy storage device 1 is connected to a plurality of wind turbines 2 , a plurality of wind turbines 2 are connected to the grid 3, wherein: the wind farm hybrid energy storage device 1 includes an AC / DC energy storage converter 11, a bidirectional DC / DC converter 12, a battery pack 13 and a supercapacitor pack 14, wherein, The bidirectional DC / DC converter 12 is connected in series with the supercapacitor bank 14 and then conn...

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Abstract

The invention provides a wind power plant electric energy quality optimization system based on energy storage, comprising a wind power plant mixing energy storage device. The wind power plant mixing energy storage device is connected to a plurality of wind turbine generator systems, which are connected to power grid. The wind power plant mixing energy storage device comprises an AC / DC energy storage converter, a bidirectional DC / DC direct-current converter, a storage battery set and a super capacitor set. The bidirectional DC / DC direct-current converter is in series connection with the super capacitor set, and then is in parallel connection with the storage battery set, and finally is in series connection with the AC / DC energy storage converter. The AC / DC energy storage converter adopts decoupling direct power control to achieve total energy storage power control. The DC / DC converter achieves the energy storage power distribution between the storage battery set and the super capacitance set. The invention is advantageous in that the aim of inhibiting the power fluctuation of the wind power plant can be achieved; the electric energy quality of the wind power plant can be improved; aset of feasible technology reference can be provided for the electric energy quality optimization of the wind power plant.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to an energy storage-based power quality optimization system for wind farms. Background technique [0002] With the rapid development of industry, the development and utilization of renewable energy is one of the important ways to solve the energy crisis, optimize the energy structure, and achieve sustainable energy development. Wind energy has attracted widespread attention due to its cleanness, environmental protection, and abundant reserves, and has broad development prospects and space. However, due to the characteristics of wind power fluctuation and difficulty in accurate prediction, it increases the difficulty of system operation control and scheduling to a certain extent. Therefore, the power sector often reduces the risk of safe operation due to the integration of wind power into the power system by limiting the scale of wind power access, which greatly hinde...

Claims

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Application Information

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IPC IPC(8): H02J7/14H02J3/38
CPCY02E10/76Y02T10/92
Inventor 章勤华青松刘海东李杨刘志
Owner 锐电科技有限公司
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