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Method for controlling energy storage type wind power station with synchronization property

A control method and technology for wind farms, which are applied in wind power generation, energy storage, climate sustainability, etc., and can solve problems such as system stability and impact on fan operation.

Inactive Publication Date: 2011-05-25
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] By configuring the energy storage system at the outlet of the wind farm, the fluctuation of the output power of the wind farm can be effectively stabilized and the stability of the system can be improved. It will still affect the stability of the system and the operation of the fan

Method used

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  • Method for controlling energy storage type wind power station with synchronization property
  • Method for controlling energy storage type wind power station with synchronization property
  • Method for controlling energy storage type wind power station with synchronization property

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Embodiment Construction

[0028] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0029] The principle and specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0030] Such as figure 1 As shown, the wind farm grid-connected system consists of a turbine generator set and a wind turbine generator set equipped with an energy storage battery. Among them, the turbo-generator set consists of multiple turbo-generator sets of the same capacity connected in parallel to form a thermal power plant input grid.

[0031] The wind turbine adopts a direct-drive permanent magnet synchronous generator set, which is composed of a wind turbine, a permanent magnet synchronous generator PMSG (permanent magnet synchronous generator), a machine-side conv...

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Abstract

The invention discloses a method for controlling energy storage type wind power station control with a synchronization property, belonging to the technical field of wind power generation control. The method is characterized in that an energy storage battery system is configured at the alternating current side of the wind power station, a control strategy based on a synchronous generator model is adopted for the inverter of the energy storage battery system, and the wind power station and the energy storage battery system are equivalent to a virtual synchronous generator, thus the wind power station has a synchronization interface property. By utilizing the method disclosed by the invention, the output power of the wind power station is smooth, and the influence of the output power fluctuation of the wind power station on the power network frequency is reduced effectively; and the property of a synchronous generator is embodied to a power network, the system power balance can be maintained automatically according to the system loading fluctuation, thus the system voltage frequency is stable.

Description

technical field [0001] The invention belongs to the field of wind power generation control, in particular to an energy storage type wind farm control method with grid-connected characteristics. Background technique [0002] As a clean renewable energy, wind energy meets the requirements of the environmental protection plan. The wind power technology industry has developed rapidly around the world, and the proportion of wind power installed capacity in the power grid has gradually increased. However, due to the random and intermittent characteristics of wind energy, the impact of large-scale wind farms on the stability of the system is gradually increasing. At the same time, frequency changes caused by system load changes will become more severe, which will easily cause the grid to lose stability. [0003] In view of the above problems, the following control strategies are available to reduce the impact of wind farm grid connection on the system. [0004] The idea of ​​virt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28H02J3/38
CPCY02E10/763Y02E10/766Y02E70/30Y02E10/76
Inventor 毕大强王思耕
Owner TSINGHUA UNIV
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