电力系统暂态变量的Prony分析

被引:31
作者
曹维
翁斌伟
陈陈
机构
[1] 上海交通大学电力系!,上海交通大学电力系!,上海交通大学电力系!
关键词
信号处理; Prony方法; 励磁系统; 短路电流; 特征根;
D O I
10.19595/j.cnki.1000-6753.tces.2000.06.012
中图分类号
TM71 [理论与分析];
学科分类号
080802 ;
摘要
电力系统暂态过程中,各类变量由衰减直流分量与衰减交流分量(基波,谐波)组成。确定暂态信号中的各分量对电力系统控制和保护至关重要。Prony分析可以直接提供按指数规律衰减信号中各种分量的频率和幅值,更切合电力系统暂态变量的特点,并可用最小二乘法得到高精度的拟合。本文采用两个算例来说明该方法的有效性,第一个算例对石洞口二厂600MW汽轮发电机静止励磁系统实测阶跃响应进行Prony分析并作误差分析,第二个算例对发电机空载三相短路电流进行Prony分析,得到短路电流各分量。
引用
收藏
页码:56 / 60
页数:5
相关论文
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