林立亨;董树锋;朱承治;唐坤杰;宋永华;

• 1:浙江大学电气工程学院
• 2:国网浙江省电力公司
• 3:智慧城市物联网国家重点实验室(澳门大学电机及电脑工程系)

摘要(Abstract)：

在下垂控制的孤岛微电网中,由下垂节点对系统电压和频率进行调控,导致传统的潮流计算方法通常不适用于孤岛微电网。针对孤岛微电网常用有功–频率/无功–电压下垂控制策略,构建了孤岛微电网潮流计算模型,并提出辅助因子两步求解算法进行求解。该算法引入两个辅助因子,把原潮流方程转化为一组超定方程、一组欠定方程与一组辅助因子间的关系函数,分两步进行迭代求解。第一步基于变换后的方程,构造一个最小二乘问题来寻找比当前迭代值更接近真实解的线性化点,以提高算法对初值的鲁棒性;第二步直接解出下一迭代步变量值以减少计算量。通过大型微电网115节点算例的对比分析,验证了该算法具有收敛速度快、鲁棒性强的特点。

关键词(KeyWords)： 孤岛微电网;潮流计算;辅助因子两步求解算法;下垂控制

Abstract:

Keywords:

基金项目(Foundation): 国家电网公司科技项目(52110418000N)~~

作者(Author): 林立亨;董树锋;朱承治;唐坤杰;宋永华;

Email:

DOI: 10.13335/j.1000-3673.pst.2019.1942

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