H. Shu's research works

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Study of OLTC running state evaluation method based on correlation analysis

Article

October 2015

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5 Citations

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In the process of OLTC switch, monitor and process OLTC's drive motor current signal and switch vibration signal. Through the correlation analysis of signal and the running state of the OLTC, indexes are used to reflect the running status of OLTC significantly, and its relative quantitative values can be formed basing on the normal operation standardization. A set of indexes is a sample, and through the analysis of the correlation between the sample and a sample of normal, or through the partial correlation analysis of two samples between more than two sets of samples, the correlation coefficient and the partial correlation coefficient can be acquired. The correlation coefficient and the partial correlation coefficient are important reference indexes for evaluating OLTC running status and judging the OLTC running state change trend. ©, 2015, Power System Protection and Control Press. All right reserved.

... The mechanical faults of OLTC included drive mechanism faults (trip over stop, refusal to move, parts loosening, parts falling off, spindle deformation, jamming, and so forth), switching mechanism faults (spring fatigue, spring breakage, parts loosening, parts falling off, mismatch between groove and wheels, and so forth), and selection mechanism faults (parts loosening, parts falling off, parts distorted and deformed, unbalanced action of the switch, and so forth) [33][34][35][36][37]. Some of these faults were mainly reflected in the energy storage segment, some were reflected in the switching segment, and others affected the whole process. ...
Reference:
FFT-based equal-integral-bandwidth feature extraction of vibration signal of OLTC

Study of OLTC running state evaluation method based on correlation analysis

Citing Article
October 2015

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H. Shu’s scientific contributions

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