Analysis of Converter Transformer Failure in HVDC Systems and Possible Solutions

被引：64

作者：

Bhuvaneswari, G. ^{[1
]}

Mahanta, B. C. ^{[2
]}

机构：

[1] Indian Inst Technol, Dept Elect Engn, New Delhi 110016, India

[2] NTPC Ltd, Talcher 759101, Orissa, India

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2009年 / 24卷 / 02期

关键词：

Commutation overlap; converter transformer failure; harmonics; HVDC system;

D O I：

10.1109/TPWRD.2009.2014271

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An HVDC transmission system has a converter transformer as one of its main components. The failure of the converter transformer is one of the major concerns for electric power utilities all over the world. Invariably, the top portions of the secondary windings of the converter transformers fail whereas the primaries are left unaffected. In this paper, an effort has been made to analyze the causes for these failures by means of modeling a practical HVDC system existing in India which ties up Talcher and Kolar and has a length of 1368 km. The modeling and analysis have been carried out in the MATLAB/SIMULINK environment. Based on the analysis, possible solutions for this problem have been suggested, such as providing passive filters on the secondary windings of the converter transformer, connecting a parallel capacitor on the do side of the converter and R-C snubbers across the secondary windings. The suggested solutions have been compared to bring out their relative merits and demerits.

引用

页码：814 / 821

页数：8

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