Review of Forward & Backward Sweep Method for Load Flow Analysis of Radial Distribution System

Abstract

Due to sharp increase in power demand, voltage instability & line overloading has become challenging problems for power engineers. Voltage collapse, unexpected line & generator outages & blackouts are the major problems associated with voltage instability. Reactive power unbalancing is the major cause of voltage instability. So that the problem of enhancing the voltage profile and decreasing power losses in electrical systems is a task that must be solved in an optimal way. This type of problem is in single phase & three phases. Therefore to improve & enhance the voltage profile & stability of the existing power system, FACTS devices and load flow analysis are the alternative solution. This paper describes a forward backward sweep method based approach for load flow analysis in radial distribution system to improve voltage stability and to minimize the transmission line losses considering cost function for entire power system planning. The proposed approach will be tested on IEEE-33 bus system.