关键词: IEC61850, 现地LCU架构, 智能化改造, 智能水电厂

Abstract:

To enhance the intelligent and information level of the equipment of small and medium-sized power plants, and to meet the new demands driven by the strategy of building an intelligent power grid and the second-round power system reform, the drawbacks of the architecture of traditional power plants monitored by microcomputers are pointed out, and an ideal solution to the architecture of small and medium-sized intelligent power plants is put forward through an introduction of technical characteristics of IEC 61850 ED.2.0. The route to intelligent local control units and the allocation scheme for station control units are discussed, and suggestions for intelligent transformation of small and medium-sized power plants are proposed. By adopting the new architecture, the monitoring system of small and medium-sized power plants can enhance the level of information sharing and efficiency of equipment utilization, reduce workload of installation, debugging and overhaul at the site, and strengthen the competitiveness of the power plant. Following the irreversible trend of technological progress, price decline and system reform, the intelligent transformation of small and medium-sized power plants is inevitable. 

Key words: IEC 61850, local control LCU architecture, intelligent transformation, intelligent hydropower plants