An Optimization Approach for Significant Positioning and Sizing of Solar-based Distributed Generation

N. Sowmyashree, M. S. Shashikala, K. T. Veeramanju

Abstract


Electric Power is one of the daily needs for everyone, whether it may be commercial, residential, or industrial. With the increased use of power-dependent equipment/devices, the power demand is increased, and it is impossible to meet this demand with the non-renewable resources of power. The consideration of naturally available resources for distributed generation (DG) can be a significant choice to meet the growing power demand. However, integrating the power system with renewable resources is a big task for balancing power demand. Further positioning and sizing of the DG is the primary concern in the power system, and the solution for the same can be obtained through different techniques. Most of the existing methods fail to address power loss minimization, DG positioning, sizing, voltage stability enhancement, etc. Hence, this paper introduces a modified PSO algorithm for optimal DG positioning and sizing with reduced loss and improved voltage stability. An analysis of the solar DG system is carried out over the IEEE 33 bus system, and it shows that the power loss reduction in solar DG (157KW) is much better than the conventional system (206KW). The DG system's voltage stability with the proposed system is 0.99, while that with the conventional system is 0.92.  The power loss in the proposed system is 4% less compared to the existing system. The analysis confirmed that the 29th bus is an optimal bus for solar DG placement, and the DG size is found to be 1.19MW.

Keywords


Solar; Distributed Generation; Particle Swarm Optimization; Power Loss; Voltage Stability Index; Positioning; Sizing

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References


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DOI (PDF): https://doi.org/10.20508/ijrer.v11i4.12470.g8317

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