Sampling for multi-channel signals and monitoring for the harmonic of power network

Author

Jiagui, Zhao ; Jiwu Hu ; Jingxi, Lin

Author_Institution

Beijing Univ. of Sci. & Technol., China

fYear

1999

fDate

36373

Firstpage

889

Lastpage

892

Abstract

A monitor system is presented in this paper which is used to measure the harmonic voltages and currents of a three-phase source in a power network. In accordance with the principles of harmonic measurement of digital sampling, this system does synchronous sampling for three voltage signals and three current signals analyzing the harmonics. A synchronous sampling impulse circuit is added in hardware to reduce errors caused by leakage effects, and a quasisynchronous sampling algorithm is used in software design. To reduce errors further, the system can monitor and analyze the fundamental wave and harmonics up to the 50^th order in real-time

Keywords

computerised monitoring; electric current measurement; power engineering computing; power system harmonics; power system measurement; sampled data systems; signal sampling; voltage measurement; digital sampling; harmonic current; harmonic voltage; multichannel signal sampling; power network harmonic monitoring; quasisynchronous sampling algorithm; synchronous sampling; three-phase source; Circuits; Current measurement; Hardware; Harmonic analysis; Monitoring; Power measurement; Power system harmonics; Sampling methods; Signal analysis; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

SICE Annual, 1999. 38th Annual Conference Proceedings of the

Conference_Location

Morioka

Print_ISBN

4-907764-13-8

Type

conf

DOI

10.1109/SICE.1999.788666

Filename

788666