Influence of the time constant of DC component on interrupting duty of GCB

2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194) Pub Date : 2001-01-28 DOI:10.1109/PESW.2001.917052

T. Satou, M. Nishio, K. Kawakita, S. Baba, K. Kamei, Y. Hirano, A. Kobayashi, T. Nakamoto, K. Hirasawa, Y. Yamane

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引用次数: 1

Abstract

The time constant of the DC component of fault currents in Japanese power systems has gradually been increased due to the concentration of power sources and utilization of large capacity transmission lines. Large time constants of the DC component are proposed in the new draft of future IEC 60056 and the latest Japanese standard (JEC-2300-1998). From the point of view of reliability in the system, it is important to investigate the influence of the time constant of DC component on interrupting duty of GCB. The authors performed interrupting tests with asymmetrical current on 550 kV 63 kA GCB by the equivalent test method. The procedure of the equivalent test method is as follows: decision of the arcing time in single-phase short-circuit test considering maximum arc energy in three-phase terminal fault; waveform simulation of the interrupting current at the last major loop; and evaluation of dielectric recovery characteristics using 2-part method.

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直流分量时间常数对GCB断流负荷的影响

由于电源集中和大容量输电线路的使用，日本电力系统中故障电流直流分量的时间常数逐渐增大。未来IEC 60056的新草案和日本最新标准(JEC-2300-1998)提出了直流元件的大时间常数。从系统可靠性的角度出发，研究直流分量时间常数对直流断路器断流负荷的影响是十分重要的。采用等效试验法对550kv 63ka GCB进行了不对称电流断流试验。等效试验方法的步骤如下:考虑三相终端故障时最大电弧能量来确定单相短路试验的起弧时间;最后一主回路断流波形仿真;用两部分法评价介质恢复特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194)

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