| 改进的WLS-TF动态同步相角和频率估计算法 |
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| 引用本文： | 张婕,赵庆生,梁定康,郭尊.改进的WLS-TF动态同步相角和频率估计算法[J].水电能源科学,2020,38(7):198-202. |
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| 作者姓名： | 张婕 赵庆生 梁定康 郭尊 |
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| 作者单位： | 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;华北电力大学电气与电子工程学院,北京昌平102206 |
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| 基金项目： | 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) |
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| 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。
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| 关 键 词： | 动态相量模型 相角估计 频率估计 PMU WLS-TF |
Improved WLS-TF Dynamic Synchronization Phase and Frequency Estimation Algorithm |
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| ZHANG Jie,ZHAO Qing-sheng,LIANG Ding-kang,GUO Zun.Improved WLS-TF Dynamic Synchronization Phase and Frequency Estimation Algorithm[J].International Journal Hydroelectric Energy,2020,38(7):198-202. |
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| Authors: | ZHANG Jie ZHAO Qing-sheng LIANG Ding-kang GUO Zun |
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| Affiliation: | (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) |
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| Abstract: | 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. |
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| Keywords: | dynamic phasor model phasor estimation frequency estimation PMUs WLS-TF |
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