IMPROVING TRANSMISSION LINE LOADABILITY LIMITS USING IPFC

ELECTRICAL ENGINEERING

An electric power system is a network consists of electrical apparatus deployed to supply, transfer, store, and use electric power. An example of an electric power system is the grid that provides power to an extended area. An electrical grid power system can be broadly divided into the generators that supply the power, the transmission system that carries the power from the generating centers to the load centers, and the distribution system that feeds the power to nearby homes and industries. Smaller power systems are also found in industry, hospitals, commercial buildings and homes. The majority of these systems rely upon three-phase AC power—the standard for large-scale power transmission and distribution across the modern world. Specialized power systems that do not always rely upon three-phase AC power are found in aircraft, electric rail systems, ocean liners and automobiles. There are two ways are usually followed for reducing the power demand such as by installing the power stations, or by extending the range of transmission line loadability. As a result, of overloaded the existing transmission lines and to falling power system stability. So decreasing voltage stability is a big issue and its leads to voltage collapse. In earlier, Power system stabilizer (PSS) control provides a positive contribution by damping generator rotor angle swings, which are in a broad range of frequencies in the power system. These modes are present in all interconnected systems and the damping is a function of tie line strength and unit loading factors. In this paper IPFC is involved for increasing the real power flow. The IEEE 14 bus system is taken and it is built in MATLAB software. By connecting IPFC, it enhancing the voltage stability and real power flow of transmission lines. Optimal location of IPFC has to be found by PSO algorithm technique. The results are verified through waveforms using MATLAB SOFTWARE.

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