一种基于分层估计的电力系统的系统侧等值阻抗计算方法
By utilizing historical and real-time samples of load-side equivalent impedance using a hierarchical estimation method, the problem of real-time calculation of system-side equivalent impedance in power systems is solved. This achieves high-precision calculation of system-side equivalent impedance with fewer samples, improving the accuracy and efficiency of protection settings.
CN116089770BActive Publication Date: 2026-07-17ZHEJIANG UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG UNIV
- Filing Date
- 2023-02-09
- Publication Date
- 2026-07-17
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Figure CN116089770B_ABST
Abstract
本发明公开了一种基于分层估计的电力系统的系统侧等值阻抗计算方法。本发明通过对模型中各参数分布的研究，利用负荷侧参数对样本进行分类，根据分类结果分别计算电力系统的系统侧等值阻抗，求取平均后计算出电力系统的系统侧等值阻抗的最终结果。本发明在等值电势各种幅度扰动下，与现有的基于统计的方法相比，能够在较少采样数量下识别出戴维南等值参数，并显著减小误差；在加入戴维南等值阻抗扰动时，所提方法依然能估算出戴维南等值阻抗。本发明在计算结果准确率、所需样本数量方面有显著优势，并具有能克服系统等值阻抗波动的优势。
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