February 1, 2022 Thesis Open Access

EBE MEKONEN TAREKE

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    <subfield code="a">ASSESSMENT AND IMPROVEMENT OF VOLTAGE STABILITY WITH COORDINATED CONTROL OF HARMONIC DISTORTION USING OPTIMAL PLACED DISTRIBUTED GENERATION UNIT</subfield>
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    <subfield code="a">&lt;p&gt;Voltage stability problem results significant challenge in distribution networks. Voltage stability can be improved using optimal placed distributed generation (DG) in distribution networks. However, the installation of inverter-based DG can increase level of harmonics, which could exceed the permissible harmonic distortion level. This paper presents the voltage stability improvement with coordinated control of harmonic distortion using particle swarm optimization (PSO) based optimal placed DG unit. The PSO, which is developed based on achieving the multi-objective functions, voltage stability index (VSI) improvement and active power loss reduction subjected to different constraints. The parameters voltage profile and VSI are determined by backward forward sweep method, and harmonics are determined by using the harmonic power flow approach. The proposed methodology is tested in 78-bus radial distribution network of the case study and in the standard IEEE-69 bus radial distribution network. The integration of type 1, 2 and type 3 DG units interims of bus voltage profiles, VSI and power loss are compared&lt;/p&gt;</subfield>
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