双馈风电场感应发电机效应的安全风险评估方法

发布时间：2018-07-12 13:07

本文选题：次同步谐振 + 感应发电机效应　；参考：《电网技术》2017年03期

【摘要】：当前风电场次同步谐振安全评估主要采用确定性方法,没有考虑风速等随机因素影响,获得的评估结果可能过于保守或者过于乐观,不能合适地反映风电场次同步谐振的安全态势。为考虑风速不确定性影响,定义了风险矩阵、风险指数,并结合概率配点法发展了一种次同步谐振风险评估方法。应用该方法评估了考虑风速不确定性的某风电场次同步谐振风险。结果表明:低串补度时,平均风速较高的地区次同步谐振安全风险较小,而平均风速较低的地区次同步谐振安全风险较高;高串补度时则相反,平均风速较高的地区次同步谐振安全风险较大,而平均风速较低的地区次同步谐振安全风险较小;对于同一风速分布,随着串补度的升高,次同步谐振安全风险先升高,然后降低。
[Abstract]:At present, the method of deterministic method is mainly used to evaluate the sub-synchronous resonance safety of wind farm, without considering the influence of random factors such as wind speed, the results obtained may be too conservative or too optimistic. Can not properly reflect the wind farm sub-synchronous resonance security situation. In order to consider the influence of wind speed uncertainty, the risk matrix and risk index are defined, and a sub-synchronous resonance risk assessment method is developed in combination with probabilistic collocation method. This method is used to evaluate the sub-synchronous resonance risk of a wind farm considering wind speed uncertainty. The results show that when the average wind speed is high, the security risk of sub-synchronous resonance is lower in the area with lower average wind speed, but higher in the area with lower average wind speed, but the opposite is true in the case of high series compensation. For the same wind speed distribution, the security risk of sub-synchronous resonance increases with the increase of series compensation degree, and the sub-synchronous resonance safety risk increases with the increase of the series compensation degree, while the sub-synchronous resonance safety risk is higher in the area with higher average wind speed, while the sub-synchronous resonance safety risk is lower in the area with lower average wind speed. And then down.
【作者单位】：江苏大学电气信息工程学院;中国电力科学研究院;
【基金】：国家自然科学基金项目(51277089;51407168)~~
【分类号】：TM614

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