The Influence of Surge Arrester Location on Over-Voltages Caused by Direct Lightning Strikes to MV Lines  

作　　者：Alexandre Piantini Thais O. de Carvalho Paulo F. Obase Jorge M. Janiszewski Gilnei J. G. Santos Donorvan R. Fagundes 

机构地区：[1]Institute of Energy and Environment, University of Sao Paulo, Sao Paulo 05508-010, Brazil [2]Polytechnic School, University ofS6o Paulo, S6o Paulo 05508-010, Brazil [3]AES SUL, Coordination of Planning and Engineering, S6o Leopoldo 93010-060, Brazil

出　　处：《Journal of Energy and Power Engineering》2014年第3期508-514,共7页能源与动力工程（美国大卫英文）

摘　　要：In the period 2003-2011, lightning over-voltages accounted for about 47% of the total number of distribution transformer failures observed in the service area ofAES Sul, a power company that operates in the state of Rio Grande doSul, in South Brazil. This paper presents the results of an investigation on the influence of the distance between transformer and MV arresters on the surges at the transformer windings caused by direct strikes to the MV network. The analysis, performed through simulations using the Alternative Transients Program, shows that in general higher voltages are produced by subsequent strokes. Although in relation to the primary side the surges transferred to the secondary are much less affected by the distance between transformers and primary arresters, such distance should always be kept as short as possible in order to reduce the probability of occurrence of transformer failures due to over-voltages at the MV bushings.

关 键 词：Distribution transformer lightning surges overvoltages. 

分 类 号：TM862[电气工程—高电压与绝缘技术] TM407