Techno-economic improvement of voltage sag performance with FACTS devices

This paper aims to provide both, utilities and customers with a methodology to investigate their sag performance with incorporated mitigation devices. The sag performance is valued technically and financially, and presented by ´generalized sag table´ and ´annual sag losses´ respectively. By applying this approach, new indices for both supply system and load buses can be drawn. The paper also presents an example to illustrate the applicability of proposed methodology.