A review of optimum DG placement based on minimization of power losses and voltage stability enhancement of distribution system

Power loss minimization and voltage stability improvement are important areas of power systems due to existing transmission line contingency, financial loss of utility and power system blackouts. Optimal allocation (i.e. siting and sizing) of Distributed Generation (DG) is one of the best ways to strengthen the efficiency of power system among capacitor placement and network reconfiguration. Power system operators and researchers put forward their efforts to solve the distribution system problem related to power loss, energy loss, voltage profile, and voltage stability based on optimal DG allocation. Furthermore, optimal DG allocation secures distribution system from unwanted events and allows the operator to run the system in islanding mode. In this paper a comprehensive study is carried out for optimum DG placement considering minimization of power/energy losses, enhancement of voltage stability, and improvement of voltage profile. An attempt has been made to summarize the existing approaches and present a detailed discussion which can help the energy planners in deciding which objective and planning factors need more attention for optimum DG allocation for a given location or in a given scenario.