转子绕组温度和温升测试的修正方法  

Amendment Method for Generator Rotor Temperature and Temperature Rise Test

作　　者：刘正平 许钧鑫 舒迎涛 孟祥宇 苟智德[2] LIU Zheng-ping;XU Jun-xin;SHU Ying-tao;无(Harbin Electric International Co.,Ltd.;Harbin Electric Machinery Co.,Ltd.)

机构地区：[1]哈尔滨电气国际工程有限责任公司,黑龙江哈尔滨150040 [2]哈尔滨电机厂有限责任公司

出　　处：《电站系统工程》2022年第2期55-58,共4页Power System Engineering

摘　　要：由于测试位置不同,发电机冷态转子绕组电阻和热态转子绕组电阻的电阻结构不完全一致,热态转子绕组电阻增加了滑环电阻。由于电阻结构的不同,应用电阻法确定的热态转子绕组温度存在测试偏差。通过无载的空转温升试验和三次负载温升试验,利用转子绕组温升曲线,确定修正系数。通过一台180 MW水轮发电机进行了转子绕组温升测试和修正,确定了额定负载的转子绕组温度和温升的实际值。For the different test position, the cold resistance and the hot resistance of the generator rotor are not the same resistance. The hot rotor resistance adds to the slip ring resistance. For the different resistance structure, it makes the deviation with the resistance method to test the rotor temperature. By a no-load and three times on-load temperature rise tests, it gets the rotor temperature rise curve to determine the amendment factor. With a 180 MW hydro generator to test and amend the deviation of a generator rotor temperature rise, determine the actual value of rated load rotor temperature and temperature rise.

关 键 词：滑环电阻 电阻法 温升曲线 修正系数 

分 类 号：TM301.4[电气工程—电机]