600MW空冷发电机组厂用电系统供电方案研究

Study on Power Supply Scheme of Electrical Auxiliary Systemfor 600 MW Air-cooled Generator Units

在介绍供电电压等级选择的基本原则基础上,以通辽发电厂600MW亚临界空冷发电机组的厂用电为例,对3种供电方案,从接线方式、厂用变压器、电动机启动、开关柜、电缆等多方面在选型上进行了技术经济对比,最后,推荐600MW亚临界空冷发电机组高压厂用电采用10/6/0.38kV三级电压供电方式。

On the base of selection for ranks of power supply voltage, technical and economical comparison was underway on type selection on many-side from connection ways, auxiliary transformer, electric motors switching-on and switch cabinets to 3 schemes of power supply, and station service of 600 MW air-cooled generator units in Tongliao power plant was the example. Three ranks of voltage with 10/6/0.38 kV for 600 MW air-cooled generator units on power supply ways were proposed at last.