Impact of time parameters of lightning impulse on the breakdown characteristics of oil paper insulation

作     者：Wenxia Sima Potao Sun Ming Yang Jingyu Wu Jiefang Hua 

作者机构：State Key Laboratory of Power Transmission Equipment and System Security and New TechnologyChongqing UniversityChongqing 400030People’s Republic of China 

出 版 物：《High Voltage》 (高电压（英文）)

年 卷 期：2016年第1卷第1期

页      面：18-24页

核心收录：

学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学] 

基　　金：the National Basic Research Program(973 Program)(2015CB251003) the Funds for Innovative Research Groups of China(51321063) 

主　　题：lightning insulation breakdown 

摘      要：At present,the insulation performances of electrical apparatus under lightning impulse voltages are always evaluated by the withstand test of standard lightning impulse voltage(1.2/50μs),which is recommended by IEC ***,the actual time parameters of transformer invading lightning impulse voltage present an obvious dispersibility *** standard wave shape is only representative of one particular class of lightning waves,which is far from satisfactory to act as the guidance waveform in the design of power equipment *** the basis of the above research background,the relationship between breakdown characteristics of oil paper insulation and time parameters of applied lightning impulse voltage was investigated in this *** 50%breakdown voltage characteristics of oil paper insulation under lightning impulse voltage with different time parameters were *** test results indicate that a short wave front time could lead to relatively low 50%breakdown voltage,while when the wave tail time varied,the 50%breakdown voltage of oil paper insulation barely *** last the simulation model of oil paper insulation was developed,and the current flowing through the oil paper insulating system under lightning impulse voltage was *** the basis of the simulating results,the relationship between current and time parameters was analysed.