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电网技术  2014 

模糊遗传算法在含风电负荷频率控制中的应用

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Keywords: 风电,负荷频率控制,互联电力系统,模糊遗传算法

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Abstract:

为解决风电场输出的随机性、间歇性和不可预测性对电力系统频率稳定产生的影响,研究了风电接入后系统负荷频率控制的改进方法。构建一个含风电的双区域水电、火电互联电力系统模型,以区域频率波动与联络线功率波动为目标函数,运用模糊遗传算法负荷频率PI控制。通过建立系统反馈与遗传算法交叉概率间的模糊关系,使交叉概率的取值自适应调整,提高了遗传算法对PI参数寻优的速度与精度。含风电的两区域互联系统仿真结果表明,改进控制器对负荷扰动与风电场扰动造成的系统频率波动具有较好的抑制作用。

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