This paper presents an Interior Pont Method (IPM) and Evolutionary Particle Swarm Optimization (EPSO) based hybrid method to solve optimal power flow in power system incorporating Flexible AC Transmission Systems (FACTS) such as Static Synchronous Series Compensator(SSSC) for security enhancement in the power systems. A fuzzy logic composite criteria based severity index is also used as an obje...

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...

Flexible AC Transmission Systems (FACTs) play a vital role in minimizing the power losses and improving voltage profile transmission system. These increase real transfer capacity of However, optimal location sizing FACTs devices determines extent benefits provided by to Non-optimal solution terms may possibly lead under-compensation or over-compensation phenomena. Thus, robust optimization is p...

Optimal Power Flow (OPF) has been widely used in power system operation and planning. This paper presents Differential Evolution (DE) method to solve optimal power flow in power system incorporating a powerful and versatile Flexible AC Transmission Systems (FACTS) device such as Unified Power Flow Controller (UPFC). Unlike other FACTS devices, UPFC has a great flexibility that can control the a...

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...

in emerging electric power systems, increased transactions often lead to the situations where the system no longer remains in secure operating region. the flexible ac transmission system (facts) controllers can play an important role in the power system security enhancement. however, due to high capital investment, it is necessary to locate these controllers optimally in the power system. facts...

The use of Flexible AC Transmission System (FACTS) devices in a power system can potentially overcome limitations of the present mechanically controlled transmission system. Also, the advance of technology makes possible to include new energy storage devices in the electrical power system. The integration of Superconducting Magnetic Energy Storage (SMES) into Static Synchronous Compensator (STA...

The unified power flow controller (UPFC) is a typical FACTS (Flexible AC Transmission Systems) device that is capable of instantaneous control of transmission line parameters. This paper presents the transient model and control system of UPFC. The presented control system enables the UPFC to following the exchanges of line active and reactive power reference values, regulating the DC link and b...