Comparative Analysis of Radial and Looped Distribution Network Against Voltage Stability and Loadability with Distributed Generation

The load growth across distribution networks has resulted in various technical issues, predominantly voltage stability and loadability. These issues can be catered more economically by changing the present system configuration and/or introducing distributed generation. It is more feasible to change the system configuration from radial (present distribution network) into loop (future distribution network) instead of upgrading the whole network. This paper proposes a comparison between looped and radial network in terms of voltage stability and loadability. It also enlightens the impact of distributed generations (DGs) on both looped & radial distribution networks. IEEE 33 and 69 bus test systems has been used for analysis and simulations. Continuation power flow (CPF) method is used for calculation and analysis of aforementioned parameters. All Simulations are carried out in Power System Analysis Toolbox (PSAT) in MATLAB framework.