巨型水轮发电机定子绕组设计建议——由发电机主保护定量化设计引出的反思  

Suggestions on Stator Winding Design of Large Hydraulic Generator——Reconsideration on Quantitative Design Method of Main Protection for Generator

作　　者：桂林[1] 王祥珩[1] 孙宇光[1] 王维俭[1] 

机构地区：[1]清华大学电机系,北京市100084

出　　处：《电力系统自动化》2009年第4期45-48,81,共5页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(50707014);清华大学电机系青年创新基金资助项目~~

摘　　要：从多个水轮发电机主保护定量化设计的工程实践中发现某些绕组形式的发电机难以取得令人满意的保护性能。提出通过合理选择定子绕组形式,兼顾电机设计和继电保护的要求,在绕组设计阶段就力求减少继电保护的动作死区。建议首选保护性能优异的整数槽"全波绕组",同时针对其他绕组形式,探讨相应的综合优化设计规则,在不改变电机电磁性能的前提下,采取相应措施减少定子绕组内部短路时继电保护动作死区的存在比率。Engineering experience of quantitative design of main protection configuration scheme for many hydraulic generators shows that the protection performance for generator with some types of stator winding is unsatisfactory, which is harmful to the safe operation of large generators. New suggestions on stator winding design of large hydraulic generator are presented. That is to select proper type of stator winding to meet requirements of electric machine design and relaying protection as well. In the primary design process of stator winding, dead zone of relay protection act should be ensured as small as possible. It is suggested that integer slots for per pole and per phase ＂full wave winding＂ with good protection performance should be selected. For other type of stator winding, combined optimal design principle should be explored. Measures for reducing dead zone ratio of relay protection act caused by inner short circuit of stator winding should be adopted without deterioration of electromagnetic performance of the hydraulic generator.

关 键 词：巨型水轮发电机 绕组设计 主保护设计 内部短路计算 

分 类 号：TV734.2[水利工程—水利水电工程]