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ZHANG Yankui, BI Daqiang. 船舶中压电网高阻接地方式机理研究[J]. Chinese Journal of Ship Research, 2014, 9(2): 89-94,116. DOI: 10.3969/j.issn.1673-3185.2014.02.016
Citation:
ZHANG Yankui, BI Daqiang. 船舶中压电网高阻接地方式机理研究[J]. Chinese Journal of Ship Research, 2014, 9(2): 89-94,116. DOI: 10.3969/j.issn.1673-3185.2014.02.016
ZHANG Yankui, BI Daqiang. 船舶中压电网高阻接地方式机理研究[J]. Chinese Journal of Ship Research, 2014, 9(2): 89-94,116. DOI: 10.3969/j.issn.1673-3185.2014.02.016
Citation:
ZHANG Yankui, BI Daqiang. 船舶中压电网高阻接地方式机理研究[J]. Chinese Journal of Ship Research, 2014, 9(2): 89-94,116. DOI: 10.3969/j.issn.1673-3185.2014.02.016
船舶中压电网高阻接地方式机理研究
ZHANG Yankui
,
BI Daqiang
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Abstract
Abstract
高阻接地方式用于船舶中压电网时,对其机理和规律迄今还缺乏定量研究。在对船舶中压电网单相接地故障进行理论分析的基础上,以一个具有励磁电压控制及柴油机调速的单机系统为例,结合Simulink暂态仿真,研究阻抗比、发电机频率偏移、燃弧时刻角以及故障点过渡电阻等对熄弧恢复电压、重燃过电压、中性点位移电压以及故障电流的影响。结果表明:随阻抗比增加,熄弧电压恢复过渡时间越长,恢复电压峰值越大,重燃过电压也越严重;提高阻抗比可减小故障电流,但减小程度逐渐趋缓,还会使重燃过电压增加;发电机频率偏移可能会引起较大的暂态过电压;燃弧时刻对故障电流几乎没有影响。最后给出高阻接地方式的一般配置原则。
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