摘要
为减轻WAMS主站端的软硬件开销,同时也为了避免WAMS主站端对PMU数据进行采样时产生的频率混叠现象,本文在分析了WAMS/PMU通信架构和同步相量测量的算法原理的基础上,提出了在PMU装置上实现分布式次同步振荡在线参数的辨识方法。本文深入分析和比较了两种不同的参数辨识方法,基于相量数据的次同步振荡参数辨识方法和基于原始采样值的次同步振荡参数辨识方法,讨论了基于相量数据的次同步振荡参数辨识方法的局限性,指出了基于原始采样值的次同步振荡参数辨识方法,既可避免对次同步振荡分量的误判,提高次同步振荡分析监测的准确性和适应性,同时又更易于实现超同步振荡等扩展性应用需求。
In order to reduce the overhead of software and hardware of WAMS main station, and to avoid the frequency aliasing, this article imposed an method of online parameter identification on sub synchronous oscillation, based on the analysis of the communication architecture of WAMS/PMU system and the principle of synchronized phasor measurement algorithm. Two different parameter identification methods are analyzed and compared in this paper, including parameter identification method based on phasor data and parameter identification method based on the original sample value. The limitations of the parameter identification method based on phasor data are discussed in this paper. It pointed out that the parameter identification method based on the original sample value avoids miscarriage of justice of the sub synchronous oscillation, and improves the accuracy and adaptability of the analysis and monitoring of the sub synchronous oscillation.
出处
《电气技术》
2017年第10期92-95,共4页
Electrical Engineering
