FACTS applications in load flow studies effect on the steady state analysis of the Hellenic transmission system

Abstract

The critical role of control strategies of power system operation in the load flow analysis has long been recognized. Efficient implementation of adjustments which model the modern control strategies, such as FACTS devices control, is growing in importance in the new energy management system environment. In this paper, three FACTS devices, the SVC, TCSC and TCPAR are modelled and integrated into new FDLF (n-FDLF) program. A model of the Hellenic power system representing its current state under peak load condition will be analyzed using a new version of n-FDLF program. More specifically the problem of low voltage profile in the North-Eastern area of the Hellenic system (East Macedonia and Thrace region) is investigated. This problem is examined, taking account of the upcoming conditions in the Hellenic system, such as the installation of TCSC or TCPAR in one of transmission line and the interconnection between Greece and Italy systems via an HVDC link. The proposed solution for the above problem is the installation of a SVC at a bus of the East Macedonia–Thrace region. Test results on the Hellenic power system are presented to demonstrate the effectiveness of the proposed project. Also, test results on several systems present the efficiency of the enhancement n-FDLF program in the adjusted solution.