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An energy storage system and offshore wind power device suitable for offshore wind power

An offshore wind power and energy storage system technology, applied in circuit devices, output power conversion devices, wind power generation, etc., can solve the problems of offshore wind power fluctuations, low-frequency resonance, etc., so as to solve power fluctuations and improve grid-connected performance. Effect

Active Publication Date: 2022-01-25
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides an energy storage system and an offshore wind power device suitable for offshore wind power, which are used to solve the technical problems of power fluctuation, low-frequency resonance and short-circuit current limiting of existing offshore wind power

Method used

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  • An energy storage system and offshore wind power device suitable for offshore wind power
  • An energy storage system and offshore wind power device suitable for offshore wind power
  • An energy storage system and offshore wind power device suitable for offshore wind power

Examples

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Embodiment 1

[0044] figure 1 It is a frame diagram of an energy storage system suitable for offshore wind power according to an embodiment of the present invention.

[0045] like figure 1 As shown, the embodiment of the present invention provides an energy storage system suitable for offshore wind power. The energy storage system suitable for The energy storage system includes a parallel link 10 and a series link 20 connected to the parallel link 10;

[0046] The parallel link 10 includes an AC and energy storage module 11 and a first static switch 12 connected to the AC and energy storage module 11, and the AC and energy storage module 11 includes several AC and energy storage sub-modules;

[0047] The series link 20 includes a second static switch 21, a current-limiting reactor 22, an LC filter 23 and a transformer 24. The second static switch 21 is connected in series with the current-limiting reactor 22 and connected in parallel with the LC filter 23, and the LC filter 23 is connecte...

Embodiment 2

[0075] like figure 1 As shown, the embodiment of the present invention provides an offshore wind power device, including the three-phase AC output line after the offshore wind power confluence and boosting and the above-mentioned energy storage system suitable for offshore wind power, and the three-phase AC output line after the offshore wind power converging and boosting The output lines are all connected to the energy storage system suitable for offshore wind power.

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Abstract

The embodiment of the present invention relates to an energy storage system suitable for offshore wind power and an offshore wind power device. The energy storage system suitable for offshore wind power is connected to a three-phase AC output line after converging and boosting of offshore wind power. The energy storage system includes a parallel link and a series link, the parallel link includes the AC and energy storage module and the first static switch, the AC and energy storage module includes several AC and energy storage sub-modules; the series link includes the second static switch, the current limiting reactance The energy storage system suitable for offshore wind power can improve the grid-connected performance of offshore wind power through the setting of parallel links, provide active and reactive power support, and effectively solve the problem of offshore wind power fluctuations; through the setting of series links, it can Dynamically improve the parameters of offshore wind power transmission lines to solve the problems of low-frequency resonance and short-circuit current limiting of offshore wind power, thereby also solving the technical problems of power fluctuations, low-frequency resonance and short-circuit current limiting of existing offshore wind power.

Description

technical field [0001] The invention relates to the technical field of offshore wind power, in particular to an energy storage system suitable for offshore wind power and an offshore wind power device. Background technique [0002] In recent years, the productivity level and technological innovation capabilities of the power grid have been continuously enhanced, and the large-scale development of new energy sources such as offshore wind power has become a trend, which also poses new challenges to the safe and stable operation of the power grid. [0003] Offshore wind power has the characteristics of volatility, intermittent, and irregularity. When offshore wind power is integrated into the grid, power oscillations will occur. The introduction of the existing energy storage system can provide a certain buffer for offshore wind power to be connected to the grid, smoothing the wind power output. and energy dispatching, and can improve the instability of new energy power generat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/32H02J3/38H02J3/24H02J3/01H02J3/46H02M3/335H02M1/32
CPCH02J3/32H02J3/381H02J3/24H02J3/01H02J3/466H02M3/33584H02M1/32H02J2300/28Y02E10/76Y02E40/40Y02E70/30
Inventor 谢宁赵伟曾杰谢志文王伟岳菁鹏张威徐琪
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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