Resonance ride-through method and system before grid connection of wind generating set

The invention discloses a resonance ride-through method and system before grid connection of a wind generating set. The resonance ride-through method comprises the steps that the inherent frequency of a tower of the wind generating set and the coupling frequency rotating speed corresponding to the i...

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Hauptverfasser:	HUANG GUOYAN, SUN JUN, NIU HUANRAN, FENG ENING, OU LIULI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
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creator	HUANG GUOYAN SUN JUN NIU HUANRAN FENG ENING OU LIULI
description	The invention discloses a resonance ride-through method and system before grid connection of a wind generating set. The resonance ride-through method comprises the steps that the inherent frequency of a tower of the wind generating set and the coupling frequency rotating speed corresponding to the inherent frequency are determined; determining a rotating speed resonance area according to the coupling frequency rotating speed point; judging whether the unit has quick crossing capability or not; and the unit quickly passes through the resonance area. According to the invention, rotation frequency and tower resonance sites before grid connection of the wind generating set can be avoided as much as possible, and the service life of the set is prolonged. The unit grid-connected signal does not only depend on the mean wind speed of the anemograph, the grid-connected state at any time is kept when the wind speed is lower than the cut-in wind speed, the grid-connected is fast when the grid-connected capacity is achie
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The resonance ride-through method comprises the steps that the inherent frequency of a tower of the wind generating set and the coupling frequency rotating speed corresponding to the inherent frequency are determined; determining a rotating speed resonance area according to the coupling frequency rotating speed point; judging whether the unit has quick crossing capability or not; and the unit quickly passes through the resonance area. According to the invention, rotation frequency and tower resonance sites before grid connection of the wind generating set can be avoided as much as possible, and the service life of the set is prolonged. 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subjects	CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
title	Resonance ride-through method and system before grid connection of wind generating set
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