Power System Security Analysis using Firing Angle Control Model of FACTS Devices

Author (s):

  1. A Jayalaxmi, JNTU University, Hyderabad, India
  2. SaratKumar Sahu, M.V.G.R Engg.College, Vizianagaram, Andhra Pradesh, India
  3. Venkata Padmavathi S, GITAM University, Hyderabad, India, sv.padmavathi@gmail.com


Today’s Power system becomes more complex and consequently it would lead to less security. To meet the demand and better security levels with existing transmission lines the Flexible AC Transmission System (FACTS) devices are the one of the alternates. In this paper a Newton Raphson (NR) algorithm was developed to find out the best operating point of Thyristor Controlled Series Compensator (TCSC) and Static Var Compensator (SVC) for the enhancement of system security. The proposed algorithm minimizes the security index iteratively. Security index indicates the overload level of the transmission lines. The proposed algorithm verified by standard IEEE 5 bus network. Line power flows and bus voltages and bus angles are obtained by the Newton Raphson algorithm and the security index is calculated for both the cases with and without FACTS. The results show that the power flow, voltage profile can be enhanced and the security margin increased by applying the proposed algorithm.

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