INTEGRATION OF DISTRIBUTION GENERATION IN PRIMARY DISTRIBUTION SYSTEM

Abstract

There is significant changes on power distribution due to incremental use of distributed generator. This is due
to its economic benefits but power industry is facing challenges for its optimal integration. Governments are beginning to
acknowledge DG as an economically viable alternative to deferring investment at generation, transmission and
distribution levels, meeting demand growth and improving distribution network performance and security. Optimal
sizing and placing of DG is well researched, traditionally studying the technical impact on distribution system such as
real power loss reduction and voltage profile improvement. Whether the impact of DG is positive or negative will depend
on its location and size. This thesis presents an algorithm to obtain the optimum size and optimum location of the DG at
any bus in the distribution network. The proposed algorithm is based on minimizing power losses in the distribution
network. Thus the main objective of this thesis is to find the optimum location and size of DG so that system losses are
minimized. For this an Improved Analytical approach is used. In this method DG delivering active power is considered
for placing. An algorithm is applied to IEEE 14 bus system. Results of loss reduction obtained by this method with help
of programming in MATLAB software and results are compared with the conventional LSF method. The results can be
used as a look-up table, which can help design engineers when inserting DG’s into the distribution networks.