基于牛顿迭代法的电力系统非线性谐波状态估计  

Research on Non-linear Harmonic State Estimation in Power System Based on Mixed Measurements

作　　者：韩美玉[1] 王艳松[1] 

机构地区：[1]中国石油大学信息与控制工程学院,山东青岛266555

出　　处：《三角洲》2014年第3期99-102,共4页Delta

摘　　要：谐波状态估计为电力系统的谐波监控、抑制和治理提供了依据。在同步相量量测装置配置不可观的条件下，引入数据采集与监控系统量测到的谐波有功功率作为量测量，建立基于混合量测的非线性谐波状态估计的灵敏度数学模型，应用牛顿迭代法进行求解。算例分析表明，谐波状态估计的灵敏度数学模型和牛顿迭代法求解有效，混合量测数据能提高系统谐波状态估计的精度。Harmonic state estimation is a useful tool to provide reference for harmonic monitoring, suppression and treatment in power system. In condition of unobservable phasor measurement unit configuration, harmonic active power measured by supervisory control and data acquisition system is added as a kind of measurement for harmonic state estimation in this paper. The sensitivity model of non- linear harmonic state estimation based on mixed measurements is built. Then, it is solved by Newton iteration algorithm. From the experimental results, it can be concluded that both the sensitivity model and the Newton iteration algorithm applied in harmonic state estimation are efficient, mixed measurements are helpful to improve the accuracy of harmonic state estimation.

关 键 词：谐波状态估计 相量量测 混合量测 量测配置 牛顿迭代法 

分 类 号：TM712[电气工程—电力系统及自动化]