Characteristics and Influencing Factors of the Postarc Current in Vacuum DC Interruption
Characteristics and Influencing Factors of the Postarc Current in Vacuum DC Interruption
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真空直流断电弧后电流特性及影响因素
DOI：
10.1109/tps.2017.2774450
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发表时间：
2018
影响因子：
1.5
通讯作者：
Zou Jiyan
中科院分区：
文献类型：
--
作者：
Qin Taotao;Zhang Ying;Dong Enyuan;Zou Jiyan
断路器的开断电流（PAC）是一个重要的参数，可以反映断路器的开断能力。根据PAC的幅值，可以定性地研究电流为零前电弧的形态和电流为零后电极距离内残余金属蒸气粒子的数量。为了研究PAC在直流（dc）中断中的特性，设计了一种高速混合执行器，并在综合测试电路中采用强制电流零法进行了一系列直流中断实验。并建立了PAC测量装置，研究了额定分断电流幅值、电极距离、换相频率等因素对PAC的影响。实验结果表明，由于接触结构、电弧位置等因素的不同，PAC在一定范围内表现出不稳定性。PAC的不稳定性在一定程度上反映了电流为零后鞘层的生长过程。此外，PAC的振幅随电极距离的变化而变化。对于相同的距离，PAC在一定范围内保持稳定。当额定分断电流小于800a时，PAC以较高的增长率增加。而当额定分断电流在800-2000A范围内时，其增长速率较低。在不同换相频率下，PAC随换相频率的增加而显著增加。这是由于换向频率越高，电流为零后电极距离内残留的金属蒸气颗粒越多，不利于直流中断。
The postarc current (PAC) is an important parameter, which can indicate the interrupting capacity of breakers. According to the amplitude of the PAC, the appearance of the arc before current zero and the quantity of residual metal vapor particles in the electrode distance after current zero can be studied qualitatively. In order to investigate the characteristics of PAC in direct current (dc) interruption, a high-speed hybrid actuator was designed, and the forced current zero method was used to carry out a series of dc interrupting experiments in the synthetic test circuit. Also, the equipment for measuring the PAC was established to investigate the factors influencing on the PAC, including the amplitude of rated breaking current, electrode distance, and commutation frequency. The experimental results indicated that PAC presented to be instable in a certain range, due to the different contact structures, arcing positions, and so on. To some extent, the instability of PAC reflects the sheath growth process after the current zero. In addition, the amplitude of PAC changes with the variation of electrode distances. For the same distances, PAC keeps stable in a certain range. When the rated breaking current is less than 800 A, PAC increases with a high growth rate. However, the one increases with a low growth rate when the rated breaking current varies within 800–2000A. For different commutation frequencies, PAC has a significant growth with the increase of the commutation frequency. It is for the reason that more residual metal vapor particles exist in the electrode distance after current zero when the commutation frequency is higher, which goes against to dc interruption.
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DOI：
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发表时间：
2012
期刊：
--
影响因子：
--
作者：
M. Callavik;A. Blomberg;Jürgen Häfner;B. Jacobson
通讯作者：
M. Callavik;A. Blomberg;Jürgen Häfner;B. Jacobson
影响因子：
1.5
作者：
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DOI：
10.1109/tpwrd.1986.4308050
发表时间：
1985
期刊：
IEEE Transactions on Power Apparatus and Systems
影响因子：
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作者：
S. Yanabu;M. Homma;E. Kaneko;T. Tamagawa
通讯作者：
S. Yanabu;M. Homma;E. Kaneko;T. Tamagawa
DOI：
10.1117/12.174642
发表时间：
1994-05
期刊：
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影响因子：
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作者：
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通讯作者：
R. Smeets;Honqun Li;N. Lamerichs;E. Kaneko
DOI：
10.1109/mper.1986.5527614
发表时间：
1985
期刊：
IEEE Power Engineering Review
影响因子：
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作者：
S. Yanabu;M. Homma;E. Kaneko;T. Tamagawa
通讯作者：
S. Yanabu;M. Homma;E. Kaneko;T. Tamagawa