大藤峡HEC发电机内部故障主保护配置方案分析与研究  

Analysis and Research on Main Protection Configuration Scheme for Internal Fault of Datengxia HEC Generator

作　　者：李镇江 尹绍清 阁亮成 LI Zhenjiang;YIN Shaoqing;GE Liangcheng(Guangxi Datengxia Gorge Water Conservancy Development Co.,Ltd.,Guipin 537200,China)

机构地区：[1]广西大藤峡水利枢纽开发有限责任公司,广西桂平537200

出　　处：《红水河》2023年第1期47-52,68,共7页Hongshui River

摘　　要：大藤峡水利枢纽HEC发电机组的定子引出线采用4分支结构,然而在接入保护设备之前必须将4个分支的TA测量信号两两合并,如何选择分支进行合并对发电机主保护配置类型和保护效果有着不同的影响。因此需要分析对比不同组合下HEC发电机相应主保护配置方案动作的灵敏度和可靠度差异,从而做出科学的抉择。笔者通过对4分支结构的发电机引出线TA信号的两两组合所能配置的保护进行分析与研究,最终选择出一组保护范围最大、动作可靠度与灵敏度最好的方案。The stator lead wire of the HEC generator set in Datengxia Hydro Project adopts a four-branch structure. However, the TA measurement signals of four branches must be combined in pairs before accessing the protection equipment. How to select the branches to merge has different effects on the main protection configuration type and protection effect of the generator. Therefore, it is necessary to analyze and compare the sensitivity and reliability differences of the corresponding main protection configuration schemes of the HEC generator under different combinations, so as to make a scientific decision. Through the analysis and research on the protection that can be configured by the pairwise combination of the TA signal of the generator lead wire with four branch structures, the authors finally select a set of schemes with the largest protection range, the best reliability and sensitivity.

关 键 词：HEC发电机 主保护 配置 大藤峡水利枢纽 

分 类 号：TV734.21[水利工程—水利水电工程]