Najafi - Birjand university IRAN
Payravi - Ferdowsi university IRAN

At present, in electrical interconnection problem, reliability of generating system is one of the most important factors that can be considered by system's management. The adequacy of the generating capacity in a power system is normally improved by interconnecting the system to another power system. Eech interconnected system can then operate at a given risk level with a lower reserve than would be required without the interconnection. On the other hand, it has economical benefits and reduction of load shedding. In this paper, after a brief theoretical study of the evaluation techniques, by using a computer program and based on available information, electrical interconnection between Iran interconnected network and K.E.R.C network studied and the results has been presented.