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The power system needs wind farms to provide primary frequency regulation reserve capacity analysis method

A power system and reserve capacity technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., to achieve the effect of improving wind power penetration rate, scientific and reasonable method, and good application effect

Active Publication Date: 2017-11-28
NORTHEAST DIANLI UNIVERSITY
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Problems solved by technology

[0004] In order to solve the problems encountered in the process of analyzing the power system that requires the wind farm to provide a frequency regulation reserve capacity, provide a method that can adapt to the change of the load and wind power in the power system with time, and improve the wind power of the power system at different times. The power penetration rate is scientific and reasonable, and the power system with good application effect needs the wind farm to provide a frequency modulation reserve capacity analysis method

Method used

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  • The power system needs wind farms to provide primary frequency regulation reserve capacity analysis method
  • The power system needs wind farms to provide primary frequency regulation reserve capacity analysis method
  • The power system needs wind farms to provide primary frequency regulation reserve capacity analysis method

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Embodiment Construction

[0031] The power system of the present invention needs the wind farm to provide a frequency modulation reserve capacity analysis method, which comprises the following steps:

[0032] 1) Definition of wind power penetration rate

[0033] The wind power penetration rate refers to the penetration level of wind power at each moment in the power system, and the ratio of real-time wind power to load in the power system is defined as the wind power penetration level (Wind Penetration Level):

[0034] WPL(t)=P w(t) / P L(t) (1)

[0035] where WPL(t) is the wind power penetration rate of the power system at time t, P w(t) and P L(t) respectively represent the wind power and load at time t in the power system;

[0036] 2) Power system inertial time constant and adjustment coefficient setting

[0037] When power fluctuations occur in the power system, the inertial time constant of the power system determines the instantaneous frequency change rate of the power system; the inertial ...

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Abstract

The invention provides a method for analyzing wind farm-provided primary frequency modulation reserve capacity required for a power system. The method is characterized by comprising the steps as follows: in order to conveniently analyze the frequency response characteristics of the power system containing a wind power, basic parameters of the wind power penetration rate are defined; inertia time constants and regulation coefficients of the power system at different wind power penetration rates are set on the basis of the basic frequency modulation principle of the power system, so that the frequency response characteristics of the power system at different wind power penetration rates analyzed in a simulating manner; a wind farm-provided primary frequency modulation reserve dispatching interval required for the power system is determined according to the relationships between loads and a limit value of the wind power penetration rate at various dispatching intervals; and the wind farm-provided primary frequency modulation reserve capacity required for the power system is determined in the simulating manner through continuously adjusting the primary reserve capacity of a wind farm. The method can adapt to change of the load and the power of the wind power in the power system along with change of the time, improves the wind power penetration rates of the power system at different moments and has the advantages of being scientific, reasonable, good in application effect and the like.

Description

technical field [0001] The invention relates to an analysis method for a power system that requires a wind farm to provide primary frequency regulation reserve capacity. Background technique [0002] In recent years, traditional fossil energy sources such as coal and oil are becoming increasingly exhausted around the world, and problems such as climate warming and environmental pollution are becoming more and more serious. In this context, the renewable primary energy represented by wind energy and solar energy has been paid more and more attention by human beings, and has developed rapidly, among which wind power generation technology has developed the most rapidly. [0003] The increasing penetration of wind power has brought many unprecedented challenges to the safe and stable operation of traditional power systems. Different from traditional thermal power units, the current mainstream wind turbines are variable-speed wind turbines. The speed is decoupled from the freque...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G06Q50/06
CPCG06Q50/06H02J3/00H02J2203/20
Inventor 李军徽冯喜超葛延峰严干贵
Owner NORTHEAST DIANLI UNIVERSITY
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