白山发电厂300MW机组励磁系统尖峰过电压问题及改进  

Peak Overvoltage of the Excitation System of 300MW Units of Baishan Hydropower Plant

作　　者：马跃林[1] 

机构地区：[1]白山发电厂,吉林省桦甸市132400

出　　处：《水电自动化与大坝监测》2008年第2期21-23,共3页HYDROPOWER AUTOMATION AND DAM MONITORING

摘　　要：分析了白山发电厂发电机励磁功率整流装置尖峰过电压过高的问题,采用氧化锌压敏电阻和阻容保护相结合的保护方式,通过压敏电阻降低过电压的幅值,同时由阻容保护降低过电压的陡度,解决了尖峰过电压过高的问题。The problem of exorbitant peak overvoltage of the excitation system of the Baishan Hydropower Plant units is analyzed, The protection mode of combination of ZnO piezo-resistance and RC protection is adopted to solve the problem. The value of overvoltage is reduced with piezo-resistance, and the gradient of overvoltage is debased with RC protection,

关 键 词：换相过电压 自并励 尖峰过电压 阻容保护 氧化锌压敏电阻 

分 类 号：TM312[电气工程—电机] TV734.4[水利工程—水利水电工程]