| Influence of HVDC System on the Shaft of Hydro-generator Unit |
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| 作者姓名： | XU Yuan-yuan LIAO Yon CHEN Guo-qing XlANG Da-wei |
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| 摘 要： | Widely concerns of the influence of the HVDC system on the Three Gorges power station have been shown so far. Based on the understanding of the mechanism of the non-characteristic harmonics introduced by HVDC system, the influence of interharmonics on the shaft of hydro-generator unit is studied. A MATLAB simulation model for the Three Gorges hybrid AC and DC transmission system with considering the effect of generator-unit shaft is established. Through time-domain simulation, the influence of the minor-associated component of interharmonics on the generator-unit shaft is analyzed, which arise from the asynchronous operation of the HVDC system. Also, the complex torque coefficient method in frequency-domain is used to analyze this problem. Same conclusions can be drawn from the results of timedomain and frequency-domain analyses.
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| 关 键 词： | high voltage direct current transmission system interharmonics subsynchronous resonance |
| 收稿时间： | 2005/9/22 0:00:00 |
| 修稿时间： | 2005/9/22 0:00:00 |
Influence of HVDC System on the Shaft of Hydro-generator Unit |
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| XU Yuan-yuan,LIAO Yon,CHEN Guo-qing,XlANG Da-wei.Influence of HVDC System on the Shaft of Hydro-generator Unit[J].Storage & Process,2006(1):36-40. |
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| Authors: | XU Yuan-yuan LIAO Yon CHEN Guo-qing XlANG Da-wei |
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| Abstract: | Widely concerns of the influence of the HVDC system on the Three Gorges power station have been shown so far. Based on the understanding of the mechanism of the non-characteristic harmonics introduced by HVDC system, the influence of interharmonics on the shaft of hydro-generator unit is studied. A MATLAB simulation model for the Three Gorges hybrid AC and DC transmission system with considering the effect of generator-unit shaft is established. Through time-domain simulation, the influence of the minor-associated component of interharmonics on the generator-unit shaft is analyzed, which arise from the asynchronous operation of the HVDC system. Also, the complex torque coefficient method in frequency-domain is used to analyze this problem. Same conclusions can be drawn from the results of timedomain and frequency-domain analyses. |
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| Keywords: | high voltage direct current transmission system interharmonics subsynchronous resonance |
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