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Multi-mode additional sub/super synchronous oscillation control method and control system

A control method and mode control technology, applied in the direction of reducing/preventing power oscillation, wind power generation, AC network circuits, etc., can solve problems affecting the safe and stable operation of the power system, and achieve the effect of suppressing sub/super synchronous oscillation

Active Publication Date: 2016-04-20
TSINGHUA UNIV
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Problems solved by technology

When the wind farm transmits power through the transmission line with series compensation capacitors, sub / supersynchronous resonance or oscillation may occur, mainly due to the induction generator effect, which will affect the safe and stable operation of the power system

Method used

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  • Multi-mode additional sub/super synchronous oscillation control method and control system
  • Multi-mode additional sub/super synchronous oscillation control method and control system
  • Multi-mode additional sub/super synchronous oscillation control method and control system

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Embodiment Construction

[0058] 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 only for explaining the present invention and should not be construed as limiting the present invention.

[0059] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refe...

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Abstract

The invention discloses a multi-mode additional sub / super synchronous oscillation control method and control system. The method comprises the following steps: collecting total three phase current ic at a fan side or total three phase current iL at a circuit side; according to the total three phase current ic at the fan side or the total three phase current iL at the circuit side, calculating to obtain multiple mode control signals; performing addition operation on the multiple mode control signals, so as to obtain an additional control signal; performing amplitude limiting processing on the additional control signal, so that the amplitude value of the additional control signal is located in a first preset range. The method can effectively inhibit sub / super synchronous oscillation of a system when a wind power plant is connected.

Description

technical field [0001] The invention relates to the technical field of power system control, in particular to a multi-mode additional sub / super synchronous oscillation control method and control system. Background technique [0002] Wind energy is a widely distributed clean and sustainable energy, and my country's wind power generation is developing rapidly. Considering the reverse distribution of resources and load centers in my country, large-scale wind power long-distance transmission has become an inevitable trend. When the wind farm transmits power through the transmission line with series compensation capacitors, sub / supersynchronous resonance or oscillation may occur, which mainly affects the safe and stable operation of the power system. Contents of the invention [0003] The present invention aims to solve at least one of the above-mentioned technical problems. [0004] Therefore, an object of the present invention is to propose a multi-mode additional sub / super...

Claims

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Application Information

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IPC IPC(8): H02J3/24H02J3/38
CPCH02J3/24H02J3/386Y02E10/76
Inventor 谢小荣刘华坤张传宇
Owner TSINGHUA UNIV
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