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

被引：0

作者：

Wang, Fei ^{[1
]}

Mi, Zeng-qiang ^{[1
]}

Yang, Qi-xun ^{[1
]}

机构：

[1] N China Elect Power Univ, Minist Educ, Key Lab Power Syst Protect & Dynam Secur Monitori, Baoding 071003, Hebei, Peoples R China

来源：

2008 THIRD INTERNATIONAL CONFERENCE ON ELECTRIC UTILITY DEREGULATION AND RESTRUCTURING AND POWER TECHNOLOGIES, VOLS 1-6 | 2008年

关键词：

frequency spectrum leakage; harmonic analysis; protection relay measure and control system; sampling frequency; self-adapting; synchronous error;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

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.

引用

页码：1889 / 1893

页数：5

共 14 条

[1]

Dai Junguang, 1998, Acta Electronica Sinica, V26, P11

[2]

DAVIS EJ, 1999, POW ENG SOC SUMM M 1, V1, P367

[3] INTERPOLATION ALGORITHMS FOR DISCRETE FOURIER-TRANSFORMS OF WEIGHTED SIGNALS [J].