Research on Calculation of Mechanical Parameters of Circuit Breaker and Engineering Application in On-line Monitoring System
Mechanical parameters are important contents of on-line monitoring system of high voltage circuit breaker(HVCB). Among mechanical parameters, closing and opening moments are the most important ones, which are difficult to be acquainted in on-line systems. In this paper, a novel method of the ju...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
ESRGroups
2014-03-01
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| Series: | Journal of Electrical Systems |
| Subjects: | |
| Online Access: | https://journal.esrgroups.org/jes/papers/10_1_2.pdf |
| Summary: | Mechanical parameters are important contents of on-line monitoring system of high voltage
circuit breaker(HVCB). Among mechanical parameters, closing and opening moments are the
most important ones, which are difficult to be acquainted in on-line systems. In this paper, a
novel method of the judgment of closing and opening moments is proposed by dealing with three
phase displacement data based on signal processing technique. According to the features of
sampling signals, three steps are employed to capture the characteristic points of displacement
curves: Firstly, interferences are eliminated through wavelet de-noising processing session.
Secondly, characteristics of three phase displacements are highlighted through wavelet
decomposition and reconstruction procedure. Lastly, closing moment, mostly adopted to
calculate the mechanical parameters, is obtained through Hilbert transform. This method is used
to analyze and process displacement data of VMB5-12 HVCB with rated voltage 10kV. The
calculation results of experiments are much more precise. |
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| ISSN: | 1112-5209 1112-5209 |