改进的WLS-TF动态同步相角和频率估计算法  

Improved WLS-TF Dynamic Synchronization Phase and Frequency Estimation Algorithm

作　　者：张婕 赵庆生[1] 梁定康 郭尊[2] ZHANG Jie;ZHAO Qing-sheng;LIANG Ding-kang;GUO Zun(Shanxi Key Laboratory of Power System Operation and Control,Taiyuan University of Technology,Taiyuan 030024,China;School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]太原理工大学电力系统运行与控制山西省重点实验室,山西太原030024 [2]华北电力大学电气与电子工程学院,北京昌平102206

出　　处：《水电能源科学》2020年第7期198-202,共5页Water Resources and Power

基　　金：国家自然科学青年基金项目(51907138);山西省自然科学基金项目(201601D102039)。

摘　　要：为提高电力系统相角和频率的测量精度,基于加权最小二乘泰勒展开傅里叶算法(WLS-TF),将带通信号模型扩展到考虑二阶谐波的更一般的信号模型,提出一种利用二阶多项式插值函数进行频率估计的新方法。仿真结果表明,在信号模型中考虑不同稳态和动态条件下,所提算法可显著提高相角和频率的估计精度。In order to improve the measurement accuracy of phase angle and frequency in power systems,the algorithm is based on the method of weighted least squares Taylor expansion Fourier(WLS-TF).The band-pass signal model is extended to a more general signal model considering second-order harmonics.A new method of frequency estimation is proposed using second-order polynomial interpolation function.The simulation results show that the proposed algorithm can significantly improve the estimation accuracy of phase angle and frequency under different steady and dynamic conditions.

关 键 词：动态相量模型 相角估计 频率估计 PMU WLS-TF 

分 类 号：TM71[电气工程—电力系统及自动化]