25 Mart 2024 Konferans bildirisi Açık Erişim

Mert Bekir Atsever; Mehmet Hakan Hocaoğlu

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    <subfield code="a">&lt;p&gt;Distribution networks play an important role in delivering the generated energy to the end user. It is designed&lt;br&gt;
to ensure an uninterrupted energy supply. Many undesirable events occur during the operation of distribution&lt;br&gt;
networks. Some of these events are faults. High amplitude currents and/or voltages are observed during faults&lt;br&gt;
in the distribution network. In both cases, it causes problems in the healthy operation of the distribution&lt;br&gt;
network. Especially during three-phase faults, high amplitude fault currents create dangerous stresses in the&lt;br&gt;
system elements and surrounding environment. Therefore, the fault must be isolated from the mains selectively&lt;br&gt;
and as quickly as possible. Optimum overcurrent relay coordination is essential for fast isolation and selective&lt;br&gt;
protection. Overcurrent relays are widely used in the detection of three-phase faults. Overcurrent relays&lt;br&gt;
basically have two setting parameters. The first tuning parameter is amplitude, and the second is time. Total&lt;br&gt;
relay operating times may be improved by optimizing the setting values of the overcurrent relays. For this&lt;br&gt;
reason, overcurrent relay coordination is designed by researchers as an optimization problem with high&lt;br&gt;
constraint functions. In this study, optimum overcurrent relay coordination is realized on a real distribution&lt;br&gt;
network. Modeling of the 154/33 kV substation was carried out with the data taken from the field. Three-phase&lt;br&gt;
fault simulations were performed using the EMTP-ATP Draw program. The objective function is constructed&lt;br&gt;
with fault current information and relay catalog information. Constraint functions have been added according&lt;br&gt;
to the network regulation. The objective function was created with both linear and non-linear programming&lt;br&gt;
methods. For the solution of both programming methods, the Pathfinder algorithm, which was newly&lt;br&gt;
introduced to the literature, was used. It is clearly seen in the results that the Pathfinder algorithm offers a fast&lt;br&gt;
and optimum solution. Therefore, it has been shown that the Pathfinder algorithm can be used for overcurrent&lt;br&gt;
relay coordination.&lt;br&gt;
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    <subfield code="a">OPTIMAL OVERCURRENT RELAY COORDINATION IN DISTRIBUTION NETWORKS USING PATH FINDER ALGORITHM</subfield>
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    <subfield code="u">İstanbul Ticaret Üniversitesi</subfield>
    <subfield code="a">Mehmet Hakan Hocaoğlu</subfield>
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    <subfield code="u">Gebze Teknik Üniversitesi</subfield>
    <subfield code="a">Mert Bekir Atsever</subfield>
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