摘要
针对近年来火电机组高压厂用母线保护配置整定不合理问题,为实现快速可靠且有选择性切除母线相间短路故障,围绕当前火电机组厂用负荷系统新特点,在某电厂300 MW机组高压厂用母线保护配置基础上,提出了高压厂用母线保护整定计算方法,保护配置采用弧光保护和双重化分支过流保护方式,经试验验证,该方式满足高压厂用母线保护可靠性、速动性、选择性、灵敏性要求。
In recent years, the problem of unreasonable configuration and setting for high voltage auxiliary bus protection in thermal power units has become increasingly prominent.In order to realize fast, reliable and selective removal of bus inter phase short circuit faults, focusing on the new characteristics of the current auxiliary load system in thermal power units, based on the configuration of high voltage auxiliary bus protection for 300 MW units in a power plant, a setting calculation method of high voltage auxiliary bus protection is proposed. The protection configuration adopts the mode of arc protection and dual branch overcurrent protection, which meets the requirements of reliability, quickness, selectivity and sensitivity of high-voltage auxiliary bus protection through test verification.
作者
罗丽佳
LUO Lijia(Inner Mongolia Jingtai Electric Power Generation Company Limited,Ordos 010300,China)
出处
《吉林电力》
2022年第4期45-48,共4页
Jilin Electric Power
关键词
火电机组
高压厂用母线
保护配置
整定计算
thermal power units
high voltage auxiliary bus
protection configuration
setting calculation
