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Content Provider | IET Digital Library |
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Author | Dandan, Zhao Hua, Huang Junhua, Liu Wenbin, Zhao Heng, Jin Jiamin, Zhang Huawei, Huang |
Abstract | The disturbance of the AC system has become one of the main causes of commutation failure in the high voltage direct current (HVDC) transmission system. Here, the time–frequency transformation method is used to analyse the AC-bus voltage disturbance from the perspective of the harmonic content of the AC power network. The time–frequency transformation for AC-bus voltage disturbance is difficult due to its characteristics of time variability and time fixity. With comparative analysis of various transformation methods, the method of combining the wavelet packet transform with the short-time Fourier transform can meet the requirement of time–frequency analysis of the AC voltage disturbance very well, and this method was used to analyse the fault recording data of Fengjing Convert Station when commutation failure occurred in recent years. The result shows that the AC-bus voltage mainly contained third and fifth harmonics, and there was a certain amount of even harmonics, and the low-order harmonics would be more in the case of a remote fault. In addition, there were more harmonics in the voltage when faults occurred in the 500 kV system, while there were more low-order harmonics when faults occurred in the other voltage class systems. |
Starting Page | 1615 |
Ending Page | 1618 |
Page Count | 4 |
Volume Number | 2019 |
e-ISSN | 20513305 |
Issue Number | Issue 16, Mar (2019) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/conferences/cn-adc-2018 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8772 |
Journal | The Journal of Engineering |
Publisher | The Institution of Engineering and Technology |
Publisher Date | 2018-10-23 |
Access Restriction | Open |
Rights License | Creative Commons Attribution-Non Commercial-No Derivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/) |
Subject Keyword | AC Power Network AC System AC Voltage Disturbance AC-bus Voltage Disturbance Commutation Commutation Failure Control of Electric Power System D.C. Transmission Fault Diagnosis Fengjing Convert Station Fifth Harmonics Fourier Transforms Harmonic Analysis Harmonic Content Harmonics HVDC Power Converter HVDC Power Transmission HVDC Transmission System Integral Transforms Low-order Harmonics Mathematical Analysis Other Power Apparatus And Electric Machine Power Converter Power Supplies to Apparatus Power Supply Quality Power System Fault Power System Protection Reliability Short-time Fourier Transform Substations Time Fixity Time Variability Time-frequency Analysis Time–frequency Analysis Time–frequency Transformation Method Transformation Method Voltage 500 KV Voltage Class System Wavelet Transform |
Content Type | Text |
Resource Type | Article |
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