提高大型发电机变压器组保护双重化配置可靠性方案研究  

Research on reliability of redundant protection configuration for large generator-transformer set

作　　者：张劲松[1] 高波[1] 徐雨舟 

机构地区：[1]江苏省电力设计院,江苏南京210024 [2]国电南自凌伊公司,江苏南京210013

出　　处：《电力自动化设备》2006年第6期20-22,52,共4页Electric Power Automation Equipment

摘　　要：目前,我国发电机变压器组(简称发变组)保护装置的正确动作率相对线路保护还比较低。微机发变组保护采用双重化配置后,防误动的紧迫性更加突出,同时一些配置未作明确规定造成实际工程中的混乱。在充分研究相关规定的基础上,结合工程实际提出了加强保护装置硬件冗余度,简化后备保护,按进线“四统一”设计,就近设置转子接地保护,合理配置直流电源及出口跳闸方式等提高大型发变组保护双重化配置可靠性的意见和建议。Compared with line protections,the correct action rate of generator- transformer set protections is lower. Since the application of redundant protection configuration ,it has become more urgent to prevent misoperations and clearly define protection configurations. Based on the study of relevant regulations and combined with field experiences ,some suggestions are provided to enhance its reliability：increase the protection hardware redundancy,simplify the backup protection,design according to input line ＇four unification＇,set the rotor grounding protection locally,rationally configure the DC power supply and the trip-output mode,and so on.

关 键 词：机组保护 保护配置 可靠性 

分 类 号：TM772[电气工程—电力系统及自动化]