Optimasi Skema Pelepasan Beban pada Sistem Distribusi Terhubung Distributed Generation (Dg) dalam Mode Operasi Islanding Menggunakan Multi Objective Artificial Bee Colony (Moabc) (Aplikasi pada Sistem Ieee 33 Bus)

Abstract

Overload disturbance is one of the problems in the electricity distribution system which can trigger the system to a voltage collapse condition. In distribution systems that are connected to Distributed Generation (DG), one of the causes of overload is the release of the Grid due to loss of excitation, in this condition the system can still work by relying solely on supply from DG. This system condition is called a separate isolation system or Islanding operation mode, but the DG capacity is not sufficient to supply all the required load capacity, so it is necessary to release a number of loads. A proper load shedding technique is required so that the system only discharges as little load as possible to prevent the system from collapsing. In this thesis, the authors carry out a load shedding simulation on an IEEE 33 Bus system connected to 3-DG units, using the intelligent UVLS load shedding technique with Multi Objective Artificial Bee Colony optimization in MATLAB software and compare it with conventional UFLS techniques. By comparing the transient analysis of the two load shedding techniques in the ETAP software, it is found that in the Islanding A operation mode the intelligent UVLS technique can restore the system in 15.031 seconds by releasing 1,729 kW of load compared to the conventional UFLS technique which requires 28.286 seconds by releasing 1,875 kW, and at Islanding B operating mode conventional UFLS technique can restore the system in 22.491 seconds by releasing 390 kW load compared to conventional UFLS technique which requires 28.871 seconds by releasing 470 kW