Evaluation of Power System Transient Stability （电力系统暂态稳定评估）.pdfVIP

INTERNATIONAL JOURNAL OF ENERGY, Issue 1, Vol. 4, 2010 Evaluation of Power System Transient Stability and Definition of the Basic Criterion Ž. Eleschová, M. Smitková and A. Beláň Abstract— Power system stability is defined as an ability of the − Voltage stability in the electric power system must be power system to reestablish the initial steady state or come into the secured (sufficient reactive power in the system), new steady state after any variation of the system’s operation value or − Monitoring and control of overloads on transmission after system´s breakdown. The stability and reliability of the electric elements in the transmission system. power system is highly actual topic nowadays, especially in the light of recent accidents like splitting of UCTE system and north II. METHODS FOR TRANSIENT STABILITY OF POWER SYSTEM American blackouts. This paper deals with the potential of the evaluation in term of transient stability of the electric power system ANALYSIS within the defense plan and the definition of the basic criterion for the There are three methods for analysis of the transient transient stability – Critical Clearing Time (CCT). stability of power grid system: Keywords—critical clearing time (CCT), defense plan, power − Direct methods, system (PS), synchronous generator, transient stability, threephase − Simulation methods, fault.