DESIGN OF INTERLINE POWER FLOW CONTROLLER USING GENETIC ALGORITHM

Abstract

Recent developments of power electronics introduce the use of flexible ac transmission system (FACTS) devices in power systems. FACTS devices are capable of controlling the network condition in a very fast manner and this feature of FACTS can be exploited to improve the stability of a power system. The FACTS concept was originally created in the 1980s to solve operation problems due to the restrictions on the construction of new transmission lines, to improve power system stability margin and to facilitate power exchange between different generation companies and large power users. FACTS devices can be applied for [2] • Power flow control, • Increase of transmission capability, • Voltage control, • Reactive power compensation, • Stability improvement, • Power quality improvement, • Power conditioning, • Flicker mitigation, • Interconnection of renewable and distributed generation and storages. Interline Power Flow Controller (IPFC) is a new concept of Flexible AC Transmission System (FACTS) controller with the unique capability for power flow management among multi-line of a substation. Generally speaking, the IPFC employs a number of Voltage Sourced Converters (VSC's) linked at the same DC terminal, each of which can provide series compensation for the selected line of the transmission system. Through common dc link, any inverters within the IPFC is able to transfer real power to any other and thereby facilitate real power transfer among the lines.