Li Yanming

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The analyses of light gases in transformer oil provide the basis of a diagnostic evaluation of equipment health. Two new normalized methods which named characteristic normalization and mix normalization are presented in this paper. The Fisher rule to evaluate the results of the two pretreatment methods is also introduced. The evaluation of the results(More)
Two new normalized methods which named characteristic normalization and mix normalization are presented in this paper. The Fisher rule to evaluate the results of the two pretreatment methods is also introduced. The evaluation of the results indicates that both of the two data pretreatment methods can achieve the purpose of big difference in the value of(More)
The continued dry weather usually caused the increasing risk of flashover of the transmission line insulators. But there is still a lack of effective means to deal with this specific risk, because the rule of pollutant accumulation is still not fairly known. This paper pointed that the global climate changes in the characteristics of abnormal in recent(More)
Computer simulation has become an important means of data processing, calculation analysis, online debugging, closed loop control, fault diagnosis, condition forecasting in power system. In order to solve the problem that there is a lot of power simulation software and users of the software have difficulty in choosing the evaluation index system, this paper(More)
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