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Problems of Myanmar DAPEIN(1) Hydro-generator\'s Neutral Point with High Resistance Grounding
Author(s): 
Pages: 25-29
Year: Issue:  2
Journal: Hydropower Automation and Dam Monitoring

Keyword:  非金属性接地故障故障点最大可能发热功率最不利过渡电阻事故绝缘电阻;
Abstract: 着重分析计算了当发电机中性点采用高阻接地方式时的非金属性接地故障.建议在工频耐压水平允许的条件下,采用Xn/Rn=0.58来选择中性点接地电阻值,以使故障点的最大可能发热功率降低至最小值.并建议国产发电机提高工频耐压水平,重点开发能准确监测绕组绝缘、反应非金属性接地故障的继电保护装置.
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