Headroom-Based Optimization for Placement of Distributed Generation in a Distribution Substation
AbstractThis paper presents a headroom-based optimization for the placement of distributed generation (DG) in a distribution substation. The penetration limits of DGs into the existing distribution substations are often expressed as a function of the feeder hosting capacity (headroom). Therefore, it is important to estimate the reliability of the networks operation as well as that of the limits imposed by the power quality standards through the evaluation of the hosting capacity (headroom) of the existing distribution feeder substation. This study aimed at developing a novel algorithm for the location of permissible headroom in a power substation for maximum active power supply by using distributed generators in each system bus without causing voltage violations. The developed algorithm can be used by utility companies to select feeder substations that have permissible headroom capacity for DG installation. Modeling and optimization was carried out in Power System Software for Engineers (PSS/E) environment using the IEEE 14-bus test system to evaluate the efficacy of the novel algorithm. The results obtained from the case study show that only four (4) feeder substations out of twenty–one (21) have the permissible headroom capacity for DG connections.
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