Transient Stability Evaluation of a 12,000-bus Power System Data Using TEPCO-BCU

This paper describes the evaluation results of TEPCO-BCU program on a 12,000-bus power system data. TEPCO-BCU is composed of several computation modules such as improved BCU classifiers, BCU method, BCU-guided time-domain stability program and a fast time-domain pro- gram. Current version of TEPCO-BCU is able to perform accurate stability assessment and energy margin computa- tion of each contingency of large-scale power systems. This paper reports some experiments of this feasibility study in terms of speed and accuracy of stability assessment. In this paper we also discuss the specification of sophisticated data handling for advanced power system analysis such as TEPCO-BCU. The features of data handling consisting of graphical user interface (GUI), database (DB), script func- tion and specification of this combination are presented in this paper.