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一种基于隐式投影积分的有源配电系统动态仿真方法

DOI: 10.13334/j.0258-8013.pcsee.2015.18.010, PP. 4645-4654

Keywords: 有源配电系统,动态仿真,隐式投影积分算法,微分-代数方程,分布式能源

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Abstract:

大规模分布式电源的广泛接入对有源配电系统动态特性分析,尤其是发生大扰动后的系统稳定性分析提出了新的挑战。因此,一种可靠、高效且具有良好数值稳定性的动态仿真算法对有源配电系统的分析研究至关重要。文中提出一种基于隐式投影算法的有源配电系统动态仿真方法。该方法为2阶精度算法,其数值稳定性具有与A稳定近似的特征,即算法的数值稳定域基本不受其外部积分步长的限制,使得隐式投影算法的计算效率较传统数值积分方法具有显著提升,适于含大规模分布式电源的有源配电系统动态仿真分析。以低压有源配电系统算例和IEEE123节点算例为例,通过与商业仿真软件和传统隐式梯形法的比较,验证了算法的正确性和有效性。

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