This paper concerns the optimal location of Flexible AC Transmission Systems (FACTS) in multimachine power system using Genetic Algorithm. The objective is to obtain the bus voltages of the system within healthy limits. TCSC is the FACT device chosen for the proposed algorithm. The location of FACT devices and their rated values are optimized simultaneously. Simulations are done on a power syst...

This paper concerns the optimization and coordination of the conventional FACTS (Flexible AC Transmission Systems) damping controllers in multimachine power system. Firstly, the parameters of FACTS controller are optimized. Then, a hybrid fuzzy logic controller for the coordination of FACTS controllers is presented. This coordination method is well suitable to series connected FACTS devices lik...

With the ever-increasing complexities in power systems across the worldwide, especially opening of electric power markets, it becomes more and more important to provide stable, secure, controlled and high quality electric power on today’s environment. The deregulation and competitive environment in the contemporary power networks will imply a new scenario in terms of load and power flow conditi...

Abstract The extensive growth of large-scale flexible high voltage direct current (HVDC) transmission systems compromises the strength alternating (AC) power grid. Sub-synchronous oscillations will likely arise within such HVDC systems, which would significantly threaten grand electric system’s stable operation. A current-type enhanced virtual inertia control is proposed to suppress sub-synchro...

The loss minimization is a major role in Power System (PS) research. Transmission line losses in a PS can be reduced by Var compensation. After the establishment of power markets with transmission open access, the significance and use of Flexible AC Transmission Systems (FACTS) devices for manipulating line power flows to relieve congestion and maximize the overall grid operation have been incr...

Distance relay plays an important role in the protection of transmission lines. The application of flexible AC transmission systems (FACTS) devices, such as the static synchronous compensator (STATCOM), could affect the performance of the distance relay because of compensation effect. This paper analyzes the application of distance relay on the protection of a transmission line containing STATC...

Flexible DC transmission systems experience negative damping characteristics in the high-frequency range due to delay system control link. This can lead interactions between impedance of modular multilevel converters (MMCs) and AC lines, resulting oscillation (HFO) issues. To resolve this problem, a simplified MMC model was developed, taking into account current inner loop The Sobol method empl...

Due to the rapid technological progress, the consumption of electric energy increases continuously. But the transmission systems are not extended to the same extent because building of new lines is difficult for environmental as well as political reasons. Hence, the systems are driven closer to their limits resulting in congestions and critical situations endangering the system security. Power ...