Method for regulating terminal voltage by reactive power support of double-fed wind generator unit and system thereof
A technology of double-fed wind turbine generator and generator terminal voltage, which is applied in flexible AC transmission system, AC network voltage adjustment, reactive power compensation, etc. problems, to achieve the effect of being beneficial to the quality of the power grid, reducing the input cost and improving the quality
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[0019] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0020] see figure 1 As shown, the machine terminal voltage adjustment method for reactive power support of doubly-fed wind turbines in the present invention includes the following steps: system initialization; measuring machine terminal voltage, and calculating the error; judging whether the error is between dead zones, and calculating reactive power Q PI ; Calculate the maximum reactive capacity Q of the doubly-fed wind turbine at this time max ;according to Q PI and Q max Determine reactive power control command Q out ;According to reactive power control command Q out , to drive the doubly-fed wind turbine to generate corresponding reactive power.
[0021] S...
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