继电保护测控系统中采样频率自适应软件算法

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI:10.1109/DRPT.2008.4523715

Fei Wang, Zenggiang Mi, Qixun Yang

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引用次数: 1

摘要

在非同步采样系统中，由同步误差引起的频谱泄漏降低了频谱分析和谐波测量的精度。提出了一种保护继电测控系统中采样频率自适应的软件算法。采样频率自适应软件算法通过计算继电测控系统的采样数据，较准确地得到实际信号频率，并根据自适应软件算法计算的频率调整采样时间间隔。介绍了软件算法的设计过程，并进行了仿真和分析。仿真和分析结果表明，该软件算法可以提高电力系统信号频谱分析和谐波测量的精度，且算法易于实现。

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Sampling frequency self-adapting software algorithm in protection relay measure and control system

Frequency spectrum leakage caused by synchronous error in nonsynchronous sampling system reduces the accuracy of frequency spectrum analysis and harmonic measurement. A sampling frequency self-adapting software algorithm in protection relay measure and control system is presented in this paper. The sampling frequency self-adapting software algorithm obtained the actual signal frequency fairly accurately by calculating the sampling data from protection relay measure and control system, and adjusted the sampling time interval according to the frequency which was calculated by the self- adapting software algorithm. The process of the software algorithm design is introduced, simulation and analysis are discussed. The results of simulation and analysis show that this software algorithm can improve the accuracy of frequency spectrum analysis and harmonic measurement for power system signal, and the algorithm can be realized easily.

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来源期刊

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies

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