摘要
为提高交流特高压输电线路的耐雷水平,调研收集了交流特高压输电线路的研究成果。结合中国交流特高压示范工程运行经验,并采取仿真计算和试验验证的方法,从本体参考电压、标称放电电流、能量吸收能力、放电电压、保护水平等方面对交流特高压线路避雷器的关键技术参数进行了分析。根据研究结果,提出对于特高压交流线路避雷器,其本体直流参考电压应≥1 086kV;标称放电电流应为30kA;2ms方波通流能力应≥1 500A;雷电冲击50%放电电压应≥2 900kV;雷电冲击残压≤2 150kV。
In order to reduce the lightning outage rate of 1 000 kV power transmission lines,we reviewed current researches on ultra high voltage AC（UHVAC） transmission lines.Taking practical experiences of the UHVAC pilot project in China into consideration,we researched some key technical parameters of 1 000 kV transmission line arrester,such as DC reference voltage,standard nominal discharge current,long-duration current impulse current,lightning impulse spark overvoltage,protection level,and so on,through simulative calculations and corresponding experimental verification.According to the research results,following parameters are proposed to be used ： the 1 000 kV transmission line arrester DC should have reference voltage no less than 1 086 kV,standard nominal discharge currents be 30 kA,long-duration current impulse current no less than 1 500 A,probability of 50% of lightning impulse discharger voltage no less than 2 900 kV,and residual voltage versus discharge current no more than 2 150 kV.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2013年第3期618-622,共5页
High Voltage Engineering
基金
国家电网公司科技项目(GY71-10-017)~~
关键词
线路避雷器
技术参数
参考电压
标称放电电流
能量吸收能力
放电电压
保护水平
transmission arrester
technical parameters
reference voltage
nominal discharge currents
energy absorption capacity
discharger voltage
protective level
