Abstract:

The promulgation and promotion of the Code IEC61850 provide a basic platform for development of digital substation. In this paper, the current situations and problems of the Baicheng 220 kV substation are introduced and analyzed, and a renovation scheme is proposed according to the weak points of the substation, which includes configuring a DF1900 monitoring system in the substation level, configuring a DF1925 controlling system in the bay level and putting in electronic transducers in the process level. A technical assessment is made on the renovation scheme in terms of its reliability availability and flexibility, which shows that the renovation not only improves the reliability and availability of the digital substation, but also enhances the flexibility of the system. Moreover, the renovation significantly saves the cost for purchasing the primary equipment for the substation with good economic results, and provides a new thinking for transforming the traditional substations into digital ones.