A narrowband high frequency distributed power transformer model for partial discharge location

被引：0

作者：

Mitchell, S. D. ^{[1
]}

Welsh, J. S. ^{[1
]}

Middleton, R. H. ^{[2
]}

Phung, B. T. ^{[3
]}

机构：

[1] Univ Newcastle, Sch Elect Engn, Callaghan, NSW 2308, Australia

[2] Natl Univ Ireland, Hamilton Inst, Maynooth, Kildare, Ireland

[3] Univ New S Wales, Sch Elect Engn, Sydney, NSW 2052, Australia

来源：

2007 AUSTRALASIAN UNIVERSITIES POWER ENGINEERING, VOLS 1-2 | 2007年

关键词：

power transformer; frequency; partial discharge; fault location; modeling; state space methods; simulation; transient response;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper utilizes a narrowband high frequency distributed transformer model to estimate partial discharge location. Here a narrow band of frequencies within the frequency response of the system, that exhibit resonant pole behavior, is specifically targeted. It is proposed that the observed response is due to the interaction of residual winding inductance with capacitance to ground. This physical phenomenon is inherently distributed; hence regions within the frequency response related to this interaction will be dependent upon the input location. With this premise an algorithm that estimates the location of the partial discharge by iteratively comparing the proposed model at various locations within the winding with the observed partial discharge frequency response is implemented. The algorithm was tested on a single phase of a 66kV/25MVA interleaved transformer winding where the partial discharge was injected via an oil immersed point-plane 7.5kV source.

引用

页码：545 / +

页数：3

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