600MW机组脱硫装置厂用电系统的优化设计

600 MW unit desulfurization device auxiliary power supply system improvement design

广东珠海金湾发电有限公司#3机组环保升级改造过程中,在充分利用原有设备的情况下,对厂用电系统进行了优化设计,通过厂用电接线方式的改变、厂用电保护的优化设计及负荷调整,实现了脱硫设备的有效备用,极大地提高了脱硫装置的可靠性,保证了烟气旁路取消后机组运行的稳定性。

During the environmental protection improvement reconstruction of Guangdong Zhuhai Jinwan Power Company’s No.3unit,existing equipment were sufficiently utilized.Auxiliaries power supply system was improvement designed.By changing connection method and improving auxiliaries power supply protection system,desulfurization system was effectively spared.The reliability of desulfurization system was significantly increased.The stability of unit was ensured after gas bypass was eliminated.