提高500kV砚都站安稳装置安全性的改进措施

The improved measure to enhance stability of the stable controlling equipment of 500 kV Yandu substation

砚都变电站的500kV肇砚甲、乙双线是高肇直流进入广东的唯一通道,其双回线路跳开后,高肇直流功率无法送出,为了保护直流装置安全运行,必须设置安稳装置。简要介绍了500 kV砚都站安稳装置的功能,动作逻辑。分析了影响安稳装置动作逻辑的因素,指出了原判据的不足并提出了改进措施,确保了安稳装置的安全可靠运行。

The 500kV Zhaoyan jia,yi Line of Yandu substation is the only channel of Gaozhao DC power transmission line to Guangdong.If the two lines trip simultaneously, it may lead to the disability of power transmission,which will spoil the DC equipment.It is necessary to set UP stable controlling equipment in order to ensure the safe operation of the DC equipment.This paper briefly introduces the function and operation logic of the stable controlling equipment in Yandu substation.It analyzes the factors that influence the operation logic of the stable controlling equipment, and indicates the deficiency of the original criteria. The improved measure is put forward to ensure the safe operation of the stable controlling equipment.