Implementation of power system security check and its visualization system

Nowadays, with the introduction of competitive electricity markets, large scale interconnected power grids are operated closer to their operation limits, and power system operators often have a dual and conflicting responsibility for system security and for profit maximization. Insuring power grid operating safely and stably under complicated operating conditions has become a rigorous challenge to electric utilities. This paper discusses some online security check technologies, and presents a power system security check software package implemented with advanced visualization technologies. The application of power system security check is based on CIM model so as to facilitate the passing of power system data with other applications.