摘要
主要论述了配电变压器低压侧0.4 kV进线断路器的保护定值整定方法和应用。基于三段式保护设定方法,论证了取消速断保护的必要性,详解给出了选择性速断保护和过载保护的整定计算原则。通过实例计算和实际应用验证了0.4 kV进线断路器的保护定值整定方法的正确性。
The protection setting method and application of 0.4 kV incoming circuit breaker at the low voltage side of distribution transformer are mainly discussed.Based on the three-section protection setting method,the necessity of canceling quick-break protection is demonstrated,and the setting calculation principles of selective quick-break protection and overload protection are given in detail.The correctness of the protection setting method of 0.4 kV incoming circuit breaker is verified by case calculation and practical application.
作者
李海存
LI Haicun(Yunnan Tian’an Chemical Co., Ltd., Anning, Yunnan, 650309, China)
出处
《硫酸工业》
CAS
2023年第1期62-66,共5页
Sulphuric Acid Industry
关键词
瞬时短路保护
选择性短路保护
过载保护
短路电流
instantaneous short circuit protection
selective short circuit protection
overload protection
short circuit current
