Method and device for controlling virtual inertia of double-fed fan

A virtual inertia, doubly-fed fan technology, applied in circuit devices, wind power generation, AC network circuits, etc., can solve problems such as influence, difficulty in differentiator implementation, and inability to meet usage requirements well, and achieve simple effects.

Active Publication Date: 2015-08-12
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the realization of the related technology must obtain the frequency differential signal, and the realization of the differentiator in actual engineering is very difficult, and it is easily affected by the noise amplification effect, resulting in certain limitations, which cannot well meet the use requirements , so it needs to be improved

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  • Method and device for controlling virtual inertia of double-fed fan
  • Method and device for controlling virtual inertia of double-fed fan
  • Method and device for controlling virtual inertia of double-fed fan

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Embodiment Construction

[0049] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0051] In the present invention, unless otherwise clearly specified...

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Abstract

The invention discloses a method and a device for controlling virtual inertia of a double-fed fan. The method comprises the steps of establishing an electric power system frequency response equation; acquiring an estimated value of a system inertia time constant; acquiring a standard form of an extended state observer; designing the extended state observer; and acquiring an active reference increment through the extended state observer so as to acquire a virtual inertia control equation of the double-fed fan. According to the control method disclosed by the invention, the active reference increment is acquired through the extended state observer, and the virtual inertia control equation of the double-fed fan is acquired, thereby avoiding a problem that a differentiator is difficult to be realized, and being capable of conveniently considering the relative contribution of wind power virtual inertia control for the system total inertia.

Description

technical field [0001] The invention relates to the technical field of new energy power generation, in particular to a control method and a control device for the virtual inertia of a doubly-fed fan. Background technique [0002] With the increasing penetration of wind power in the power system, especially after large-scale wind farms are directly connected to the high-voltage transmission grid, wind power has brought a non-negligible impact on the dispatching operation, safety and stability of the power system and many other aspects. . One of the key issues is the impact of large-scale wind power on the frequency of the power system and how to control the frequency of the power system including large-scale wind power to maintain the frequency level required by the power system. [0003] Among them, wind power virtual inertia control refers to adding a system frequency response link to the wind turbine control system. When the system frequency changes, it releases a certain...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J3/386Y02E10/76
Inventor 梅生伟张新燕刘锋王维庆陈来军常喜强郑天文何山陈天一
Owner TSINGHUA UNIV
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