Voltage Stability Enhancement Studies for Distribution Network with Installation of FACTS

Voltage stability studies and to maintain the flat voltage profile is quite important in order to maintain the healthy operation of electric power network as well as to provide the quality and cheap electric energy to the modern power users. Further with the advancement of power electronics technologies and its application to design flexible alternating current transmission devices (FACTS) have made it easier to alleviate the voltage stability problem in a quicker and cheaper way in the modern DNs. Hence, the present research work shows an attempt to investigate and solve the problem of voltage instability in distribution network (DN). All buses and lines are calculated in terms of voltage stability index (VSI) and to identify the optimal location of FACTS. The bus or line with minimum voltage profile in terms of VSI are more sensitive to the voltage collapse and it may further lead to blackouts. The FACTS are permanently installed at the weakest point to enhance voltage profile and improve the voltage stability in the DN. The present study is test on standard IEEE-15 bus DN and application results are shown to verify the feasibility of the present studies for DN.