Loop Current Calculation based on Voltage Angle Difference at Tie Switch for Switching Plan Validation in Distribution System Operation

- Journal title : Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
- Volume 29, Issue 7, 2015, pp.14-21
- Publisher : The Korean Institute of IIIuminating and Electrical Installation Engineers
- DOI : 10.5207/JIEIE.2015.29.7.014

Title & Authors

Loop Current Calculation based on Voltage Angle Difference at Tie Switch for Switching Plan Validation in Distribution System Operation

Son, Juhwan; Lim, Seongil;

Son, Juhwan; Lim, Seongil;

Abstract

Distribution systems are operated in radial structure, but temporal loop structure could be founded the live load transfer. Main purposes of reconfiguration of distribution network are load balancing, loss minimization and voltage drop maintaining. In the loop structure, huge loop current can be flowed between two substations in case of large voltage angle difference. Protection devices of distribution line can be triped by this huge loop current. So, precise calculation of loop current is very important for secure switching. This paper proposes a novel calculation method of loop current using the voltage angle differences measured at the tie switches. Feasibility of the propose method has been verified by various case studies based on Matlab simulation.

Keywords

Loop current calculation;Distribution system reconfiguration;Power flow calculation;

Language

Korean

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