A Frequency Measurement Method for Protection of Smart Circuit-breaker

Abstract The application scale of new energy such as wind energy and solar energy in China is increasingly large. One of the characteristics of these energy sources is instability. Circuit-breakers play an important role protection in distributing these energy sources. Aiming at a new type of smart...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 2378; no. 1; pp. 12074 - 12079
Main Authors Ren, Zhendong, Zheng, Libin, Zhou, Ying
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.12.2022
Subjects
Circuit breakers
Energy sources
FIR filters
Frequency measurement
Interference
Measurement methods
Metering
Physics
Solar energy
Waveforms
Wind power
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Summary:Abstract The application scale of new energy such as wind energy and solar energy in China is increasingly large. One of the characteristics of these energy sources is instability. Circuit-breakers play an important role protection in distributing these energy sources. Aiming at a new type of smart circuit-breaker architecture, this paper proposes a frequency measurement method for protection function, that is, the waveform sample value of high precision and high sample rate output by the DMA of the metering chip. The FIR filter is used to eliminate harmonic interference, impulse interference, etc of sample value. The frequency value is calculated by the interval duration between the two cross-zero points of sample value, and the simulation process, as well as the results, are given.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2378/1/012074