Energy storage and wind power combined primary frequency modulation optimization control method

An optimized control and energy storage battery technology, applied in the field of electrical engineering, can solve problems such as rotor speed constraints, slow pitch control response, difficulty in meeting system frequency modulation requirements, etc., to improve service life, improve acceptance capacity, and reduce wind abandonment Effect

Pending Publication Date: 2022-02-11
ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER
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Problems solved by technology

At present, the control method for wind farms to participate in frequency modulation is mainly at the cost of sacrificing their own economy, which is contrary to the economic demands of t

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  • Energy storage and wind power combined primary frequency modulation optimization control method
  • Energy storage and wind power combined primary frequency modulation optimization control method
  • Energy storage and wind power combined primary frequency modulation optimization control method

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Embodiment Construction

[0048]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0049] In the description of this embodiment, it should be noted that the terms "connect" and "place" should be understood in a broad sense, for example, "connect" can be a wire connection or a mechanical connection; "place" can be a fixed connection placement, also can be one-piece placement. Those of ordinary skill in the art can understand the specific meanings of the above terms in this embodiment according to specific situations.

[0050] An optimal contr...

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Abstract

The invention discloses an energy storage and wind power combined primary frequency modulation optimization control method, which comprises a wind turbine generator and an energy storage unit. The wind turbine generator is controlled by a controller to transmit electric power to a power grid and charge the energy storage unit to supplement electric energy, and the power output of the wind turbine generator has the capability of participating in the primary frequency modulation of the power grid; the energy storage unit is used for participating in primary frequency modulation of the power grid, and when the power grid has a primary frequency modulation demand, the method establishes a frequency modulation power amount [delta]P for a frequency deviation [delta]f occurring in the primary frequency modulation demand. According to the method, the fan and the energy storage are regarded as a whole to calculate the primary frequency modulation quantity, the problem of how to economically and reasonably distribute energy between the fan and the energy storage is comprehensively considered, and the primary frequency modulation performance of the whole station is improved by utilizing the rapidity of the energy storage battery; therefore, the fan has the same inertia response characteristic as a conventional thermal power generating unit while controlling the maximum power, and the admitting ability of new energy is improved.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering, and more specifically relates to an optimized control method for primary frequency modulation combined with energy storage and wind power, which is mainly used to improve the frequency response characteristics of supporting energy storage wind farms and actively participate in the primary frequency modulation of power grids. Background technique [0002] Frequency is one of the most important operating parameters of a power system, and frequency changes have an important impact on the safe and stable operation of the system. In recent years, the penetration rate of wind power in the power system has been increasing, which poses a challenge to the frequency security of the power grid: wind turbines are under maximum power tracking control (MPPT) and controlled by power electronics, so that they do not have inertial response and primary frequency regulation. capacity; with the large-...

Claims

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Application Information

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IPC IPC(8): H02J3/46H02J3/38H02J3/32
CPCH02J3/46H02J3/38H02J3/32H02J2300/28Y02E10/76Y02E70/30
Inventor 丁磊任曼曼邓竞蓝解振洋施壮蔡兵方伦李梓楠吴忠田笑楠李婧
Owner ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER
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