Bahari - Moshanir Company Tehran – IRAN
Saiy - Moshanir Company Tehran – IRAN

Todays increase in expansion and complexity of integrated networks such as Iran integrated Network, causes an economical & more secure operation required by Energy Management systems and dispatching centres. Therefore,on-line security assessment to avoid system instability should be obtained and stability / Instability qualitative degree should be specified . Along with other under study and development methods used for such purpose, there is a great hope for transient Energy function method which is able to determine directly the stability of network. In this paper, the above mentioned method is presented for future application of it in Iran Network and at the end the stability / Instability Qualitative degree is introduced.