Integration of Renewable DGs to Radial Distribution System for Loss Reduction and Voltage Profile Improvement

The necessity for smart electrical systems having minimum power loss and environmental impact is providing impetus to go for Distributed Generations (DGs) which may offer several other advantages such as reduced transmission and distribution system resources, increased reliability, better power quality. Proper placement of DGs, such as wind turbines and photovoltaic units, in the distribution system is still a very challenging issue for obtaining their maximum potential benefits. Optimal location and sizing of distributed generation (DG) is a key for loss minimization and improvement of voltage profile in radial distribution systems. The present paper proposes a loss sensitivity factor for DG placement in distribution network for power loss minimization while maintaining the voltage profile in the system within the specified limits. An Analytical approach is proposed for sizing of renewable DGs such as solar, wind and Hydel Units for minimizing active power loss, annual operation costs (installation, maintenance, and active power loss costs). This is tested in different cases. All cases are compared to identify the superiority of the proposed method. The proposed method is tested on IEEE 33 Bus Radial Distributed System to demonstrate the performance and effectiveness in ETAP software.