The required technological breakthrough in developing universal emergency control systems in terms with transient and dynamic stability

This paper describes technological breakthroughs in the development of a real-time stability control system, characterized by both transient and dynamic stability, using measured on-line data of a power system. First, a new method of detecting and identifying the groups of coherently oscillating generator units is proposed use of this method is essential for evaluating and determining stability control strategies and control variables. Secondly, a newly developed protective relay system, locally installed at a transmission line, which enables predicting of loss of synchronism by 20-700 milliseconds earlier than the beginning of loss of synchronism, is also presented.