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Power coordination control method and system for wind power participating in primary frequency modulation of power grid

A grid frequency and coordinated control technology, which is applied in the control of wind turbines, wind power generation, reduction/prevention of power oscillation, etc., can solve problems such as inability to meet wind power response time requirements, and achieve response time requirements, stable power support, and fast The effect of power support

Active Publication Date: 2019-06-07
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

[0004] Most of the power control systems such as AGC equipped in existing wind farms cannot meet the response time requirements for wind power to participate in primary frequency regulation. Power support to meet the response time requirements for wind power to participate in the primary frequency regulation of the power system

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  • Power coordination control method and system for wind power participating in primary frequency modulation of power grid
  • Power coordination control method and system for wind power participating in primary frequency modulation of power grid
  • Power coordination control method and system for wind power participating in primary frequency modulation of power grid

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Embodiment Construction

[0054] The present invention will be described in further detail below in conjunction with the accompanying drawings. In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0055] The overall framework of the primary frequency regulation of the power grid by the wind farm in the present invention through the power coordination control system is shown in the attached Figure 4 As shown, the wind farm po...

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Abstract

The invention provides a power coordination control method and system for wind power participating in primary frequency modulation of a power grid. The method comprises the steps of carrying out primary frequency modulation on a wind turbine generator system within a threshold time of the power grid frequency anomaly when the power grid has frequency disturbance with the frequency deviation beinggreater than a frequency threshold and the active power output of the wind power plant is greater than the threshold capacity; and carrying out primary frequency modulation on the wind power plant after the power grid frequency anomaly exceeds the threshold time or the frequency deviation of the power grid disturbs within the threshold frequency and the active power of the wind power plant is greater than the threshold capacity. The technical scheme provided by the invention can provide fast power support in case of frequency disturbance of the power grid, thereby meeting the response time requirement of the primary frequency modulation of an electric power system. The wind turbine generator system provides stable power support during the large frequency disturbance of the power grid by adopting a mode of inertia response and pitch angle combined frequency modulation.

Description

technical field [0001] The invention belongs to the field of wind power generation, and in particular relates to a power coordination control method and system for wind power participating in primary frequency regulation of a power grid. Background technique [0002] In recent years, wind power has developed rapidly, and it is the renewable energy utilization method with the fastest growth rate and the largest installed capacity. Since variable-speed wind turbines are connected to the grid through converters, compared with conventional thermal power and hydroelectric generators, wind turbines cannot provide similar inertia support and primary frequency modulation services. As the proportion of wind power in the regional power grid continues to rise, the pressure of frequency regulation and peak regulation of the power system continues to increase, and the difficulty of frequency stability of the system continues to increase. With the changes in the grid source structure of ...

Claims

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Application Information

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IPC IPC(8): H02J3/24H02J3/38H02J3/48F03D7/00
CPCY02E10/72Y02E10/76
Inventor 秦世耀王瑞明张利李少林代林旺孙勇陈晨王莹莹
Owner CHINA ELECTRIC POWER RES INST
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