感应滤波器对新型换流变压器短路阻抗的影响

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Abstract The short-circuit impedances of converter transformer are important technical parameters in HVDC system. Compared with the traditional converter transformers, the new converter transformer has unique windings connection mode. Based on the peculiar topological structure of the new converter transformer, this paper establishes the mathematical relations of the valve side short-circuit impedance Z_K, the grid side short-circuits impedance Z_k and the filter impedance Z_f, respectively. According to the analysis of the relation of the short-circuit impedances and the filter impedance, the results show that the short-circuit impedance change a little whether or not with filters, so that filters have little effect on the short-circuit impedances, And according to the comparison between the short circuit impedance Z_K and Z_k, it shows that the both short-circuit impedance are almost the same, so that the short-circuit impedance of the new converter transformer are symmetrical. Finally, the theoretical calculation, simulation and experiment results verify the correctness of the theoretical analysis.

Key words： HVDC new converter transformer short-circuit impedance inductive filter

Received: 28 December 2010 Published: 20 March 2014

PACS:

TM41

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	Articles by authors
	Tran Thanh Ngoc
	Luo Longfu
	Xu Jiazhu
	Dong Shuda
	Deng Jianguo
	Zhang Zhiwen
	Zhao Zhiyu

Cite this article:

Tran Thanh Ngoc,Luo Longfu,Xu Jiazhu等. Influence of Inductive Filters on Short-Circuit Impedances of New Converter Transformer[J]. Transactions of China Electrotechnical Society, 2012, 27(4): 71-76.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I4/71

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