摘要
火力发电厂的厂用电系统分为高压厂用系统和低压厂用系统,一般配置多台高压系统(6 kV或10 kV)向低压380V系统供电的变压器,随着机组容量的不断增大,原来由单一工作段配电的模式已变为低压动力中心(PC)、电动机动力中心(MCC)的工作模式。文中就此类模式的低压配电系统继电保护的配置、整定计算进行了分析,对常见型式保护的配合整定原则进行了探讨。
Including high voltage and lower voltage distribution system, the auxiliary power system in thermal power plant has always many distribution transformers serving from high voltage （6 kV or 10 kV） to lower voltage （380 V）. With the capacity increasing of generator unit, the original working mode from single bus has changed to PC （ power center） ＆ MCC （ motor control center）. Focusing on this distribution system in thermal power plant, this paper analyses the protection configuration ＆ setting and researches the setting guides of the protection normally used.
出处
《继电器》
CSCD
北大核心
2006年第6期67-70,共4页
Relay
关键词
继电保护
火力发电厂
厂用电
relay protection
thermal power plant
auxiliary power system
