摘要
以5台每相2分支的水轮发电机的主保护设计为例,说明经定量化设计过程得到的"一横一纵"初步格局(裂相横差+不完全纵差保护)完全不同于传统设计方案(零序电流型横差+完全纵差保护),其他主保护方案的取舍应在定量分析的基础上,依据现有初步格局的性能和发电机中性点侧电流互感器布置的难易程度来决定,以达到主保护设计和电机设计2个方面"综合最优"的目标。
Five schemes of main protection configuration for hydro-generators with two branches per phase are presented to show that,the scheme of ＂transverse one plus longitudinal one＂ （split - phase transverse differential protection plus incomplete longitudinal differential protection） obtained by quantitative design is completely different from traditional one （zero- sequence current transverse differential protection plus complete longitudinal differential protection）. In order to meet the requirement of integrated optimization of main protection design and electric machine design, other schemes should be set according to the protective performance of quantitative design and the allocation of neutral point current transformer.
出处
《电力自动化设备》
EI
CSCD
北大核心
2008年第12期1-5,共5页
Electric Power Automation Equipment
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~~
关键词
水轮发电机
内部短路计算
定量化设计
电机设计
hydro-generator
internal fault simulation
quantitative design
electric machine design
