涟钢Ⅱ变电站6kV系统优化

The Optimization of the 6kV System of Lianyuan Steel's Ⅱ Transformer Substation

随着10kV设备使用越来越多,涟钢Ⅱ变电站的6kV系统负荷越来越轻,可以考虑退出2台220kV变6kV的主变,减少基本电费,但因涟钢自配发电机较多,6kV系统改变供电模式后存在短路电流超标的问题,故引进深度限流器对事故时超标的短路电流进行限流。

With more and more 10 k V devices put into use, the load of the 10 k V system of Lianyuan Steel's Ⅱ substation becomes lighter and lighter, so it is possible to withdraw two 220 k V to 6 k V transformers to reduce basic electricity consumption. But as the company has more self-owned generators, after changing power supply mode the 6 k V system had the problem of excessive short circuit current, so a depth current limiter was introduced to limit the excessive short circuit current at any failure.