摘要
为了研究电缆局部放电模式识别中Weibull分布的应用,将10 k V,30 m长的XLPE(crosslinked polyethylene)电缆作为研究对象,设计四种典型的人工缺陷模型,分析其产生的放电脉冲信号,采用极大似然法估计信号的Weibull分布。结果表明,Weibull概率分布跟局放幅值分布密切相关。因此可以根据其形状参数β值识别不同的放电类型。
To study the application of Weibull distribution in the mode of partial cable charging, taking a 30 m long 10 kV XLPE （ cross-linked polyethylene） cable as the test object, this paper designs four typical artificial defect models, analyzes the discharging pulse signal generated by them, and adopts the maximum likelihood method to estimate the Weibull distribution of the signal. The results show that, Weibull probability distribution is closely related to partial discharging amplitude distribution, and different discharging types can be recognized according to its shape parameter β.
出处
《电气自动化》
2015年第5期111-114,共4页
Electrical Automation
