基于宽频信息的高压直流输电线路行波故障测距方法

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Abstract The existed high voltage direct current (HVDC) travelling wave fault location methods often have bad accuracy and can’t adapt to different working and fault conditions. To solve this problem, this paper presents a novel fault location method based on broadband travelling wave information. Firstly, a deep research is made on the travelling wave speed variation characteristic and its inherent relationship with the broadband information, pointing out how it impacts on fault locating results. Then, to deal with the variant speed properly, a complete wave speed treatment scheme is carried out based on the broadband information, significantly improving the accuracy of the excited fault location algorithms. Furthermore, applying the scheme into one terminal fault location, a novel one terminal algorithm is proposed, which does not need detect the second wavefront of the fault travelling wave and hence considerably reliable. Relevant simulation is performed in EMTDC taking Tian-Guang HVDC system for instance, and the results verify the correctness and feasibility of the method.

Key words： Travelling wave fault location broadband information variant speed HVDC transmission

Received: 27 June 2011 Published: 27 November 2013

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TM77

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	Articles by authors
	Xu Min
	Cai Zexiang
	Liu Yonghao
	Zhang Yining

Cite this article:

Xu Min,Cai Zexiang,Liu Yonghao等. A Novel Fault Location Method for HVDC Transmission Line Based on the Broadband Travelling Wave Information[J]. Transactions of China Electrotechnical Society, 2013, 28(1): 259-265.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I1/259

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