反思低转速大型水轮发电机定子绕组形式的选择  

Reconsideration of the Selection of Stator Winding Type for Large-sized Hydraulic Generator with Low Rotational Speed

作　　者：桂林[1] 铎良 杨忠国[3] 邱阿瑞[1] 王祥珩[1] 

机构地区：[1]清华大学电机系电力系统及发电设备控制和仿真国家重点实验室,北京100084 [2]东方电气集团东方电机有限公司,德阳618000 [3]天津阿尔斯通水电设备有限公司,天津300400

出　　处：《大电机技术》2013年第4期30-33,37,共5页Large Electric Machine and Hydraulic Turbine

基　　金：国家自然科学基金资助项目(50707014)

摘　　要：出于抑制转子偏心振动的考虑,近期多台低转速大型水轮发电机采用或改用集中布置的叠绕组或"半波绕组",但对由此带来的主保护性能的变化则注意不够。本文以糯扎渡DEC、梨园和观音岩TAH发电机主保护设计为例,在定量分析的基础上,对比了不同定子绕组形式对低转速大型水轮发电机主保护性能的影响,指出低转速大型发电机优先选择"半波绕组",能够实现电机设计和主保护设计"双赢"的目标,即在不增加主保护方案不能动作故障数的同时,又达到抑制转子偏心振动的目的。For restraining the generator＇s vibration attributed to rator eccentricity, lap winding or centralized arrangement wave winding is adopted by a series of slow-speed large-sized hydraulic generators recently, but their main protection performance are probably harmful to the generators＇ safe operation. By using the quantitative and optimum design methods of main protection for large-sized hydraulic generator of Xiluodu, Liyuan and Guanyinyan power stations, main protection performance of slow-speed large-sized hydraulic generators with different stator winding types are analyzed and compared based on the quantitative analysis. New suggestions on stator winding design of large-sized hydraulic generator are presented in this paper. Selecting centralized arrangement wave winding for the large-sized hydraulic generator with low rotational speed can meet the requirements of electric machine design and relaying protection simultaneously. At the time of restraining the generator＇s vibration attributed to rator eccentricity, above stator winding type may not lead to the remarkable increase of non-operation fault number of main protection.

关 键 词：水轮发电机 绕组设计 主保护设计 内部短路计算 

分 类 号：TM312[电气工程—电机]