电力系统动态频率响应时空分布特征量化描述.PDF

第29 卷 第7 期 中 国 电 机 工 程 学 报 Vol.29 No.7 Mar. 5, 2009 64 2009 年3 月5 日 Proceedings of the CSEE ©2009 Chin.Soc.for Elec.Eng. 0258-8013 (2009) 07-0064-07 TM 71 A 470 40 文章编号： 中图分类号： 文献标志码： 学科分类号： ⋅ 电力系统动态频率响应时空分布特征量化描述 张恒旭，刘玉田 ( 山东大学电气工程学院，山东省 济南市 250061) Quantitative Description of Space-time Distribution Features of Dynamic Frequency Responses ZHANG Heng-xu, LIU Yu-tian (School of Electrical Engineering, Shandong University, Jinan 250061, Shandong Province, China) ABSTRACT: Due to geographically uneven distribution of 处频率线性变化区间内的平均变化率、对扰动的响应延 transmission corridors, parameters difference among different 时、频率偏移最大量及延时、过渡过程中主导振荡模式的 generators and their controllers, and various load 阻尼比来描述系统动态频率响应时空分布特征。基于上述 characteristics in different zones, the dynamic frequency 方法，可得到频率响应时空分布特征矩阵，从而可较好地 responses of large interconnected power system show notable 通过微观变量来量化描述系统的宏观动态行为。讨论时空 space-time distribution features. In order to facilitate the 特征矩阵的潜在应用领域，并给出以观测点的响应延时估 discussions, the definitions of observation space, response time 计扰动位置的示例。以华北互联电网为例进行了仿真计 and linear changing scope were presented. In observation space, 算，验证了所提出方法的有效性。 a method was proposed to quantitatively describe these space-time distribution features. Five variables were defined 关键词：电力系统；频率特性；动态频率响应；时空分布特 and calculated based on the frequency dynamic processes in 征；扰动定位 observation space, including the mean changing rate of 0 引言 fre