摘要
通过实例,分析了接地距离保护的接线方式及其意义,在考虑继电保护的基本要求,即选择性,灵敏性和可靠性的基础上,推导了接地距离Ⅱ段保护的整定值计算,既考虑到正序、零序参数之间的配合,又考虑到故障类型之间的配合,即单相接地短路和两相接地短路之间的配合。该推导过程可以帮助学生更加深刻体会到继电保护选择性的重要性,也可以提高学生分析问题、解决问题的能力。
The mode of connection of grounded distance protection was analyzed in detail with the practical example.On the basis of the requirement of the relay protection,namely,selectivity,sensitivity and reliability,the setting calculation of Zone 2 of Grounded Distance Protection was derived in detail,not only considering the coordination of such parameters as positive and zero sequence;but also considering the fault type such as single line ground fault and two-line grounded fault.The deduction course can help the students understand the importance of the selectivity of the relay protection and improve the students＇ ability to solve the problem met in work as well.
出处
《实验室研究与探索》
CAS
北大核心
2010年第9期49-52,共4页
Research and Exploration In Laboratory
关键词
接地距离保护
整定计算
分支系数
ground distance protection
setting calculation
branching coefficient
