短期孤网技术在自备电厂中的应用  

Application of Short-term Isolated Network Technology in Self-provided Power Plants

作　　者：李军[1] 冯文雄[1] LI jun;FENG wenxiong(Maanshan Iron and Steel Co.,Ltd,Maanshan,Anhui 243000,China)

机构地区：[1]马鞍山钢铁股份有限公司,安徽马鞍山243000

出　　处：《冶金动力》2023年第4期13-16,共4页Metallurgical Power

摘　　要：以钢铁、化工为代表的一些重工业企业,对供电可靠性有较高的要求。生产时如发生供电中断故障,不仅会造成经济损失,甚至会引发安全事故。在配备有自备电厂的一些工业区,可引入专门应对外部电网故障的短期孤网技术,当外部电网发生故障时,厂内电网可迅速与外部电网脱离,实现厂内机组带负荷孤网运行,防止外部电网故障穿越并影响厂内电网。待外部电网恢复后,还可自动实现厂内机组与外部电网同期并列运行,极大提高了重要工业区供电可靠性。some important industrial enterprises,such as iron and steel and chemical indus-try,have high requirements for power supply reliability.Once the power supply is interrupted,they may not only face very serious economic losses,but also cause serious safety accidents.In some in-dustrial parks equipped with self provided power plants,a set of short-term isolated network tech-nology can be introduced to deal with the external network fault.When the external network fault oc-curs,the power grid in the plant can be quickly separated from the external network,so as to realize the isolated network operation of in plant units with in plant load,and prevent the external network fault from passing through and affecting the in plant power grid;After the recovery of the external network,it can also realize the parallel operation of the in plant units with load and the external net-work at the same time,which greatly improves the reliability of power supply in important industrial parks.

关 键 词：自备电厂 供电可靠性 短期孤网 

分 类 号：TM732[电气工程—电力系统及自动化]