增设变压器限时速断保护的必要性和可行性  

Necessity and Feasibility of Dead-Line Instant Protection for Transformer

作　　者：刘新东 

机构地区：[1]海阳市电业局,山东海阳256100

出　　处：《电力自动化设备》2001年第9期63-64,67,共3页Electric Power Automation Equipment

摘　　要：根据海阳市现行 110kV及以下变压器后备保护配置存在的不足 ,阐明了增设中、低压侧限时速断保护的必要性与迫切性 ,并提出了对电磁型变压器保护增设该保护功能的可行性方案。对建议采用的SQJ系列限速断继电器作了简单介绍。According to the existing shortages in backup protection configuration for transformer of 110 kV and below, the necessity and urgency of adding dead-line instant protection at medium and low voltage sides are explained and its feasible scheme of electromagnetic transformer protection is proposed.The suggested SQJ series relay is briefly introduced.

关 键 词：电力系统 继电保护 限时速断保护 变压器 后备保护 必要性 可行性 

分 类 号：TM772[电气工程—电力系统及自动化]