Gabungan Metode Deteksi Islanding Berdasarkan Pergeseran Frekuensi Aktif dan Variasi Amplitudo Tegangan Pada Sistem Photovoltaic Terhubung Jala-Jala

Pramuditia Putra, Septian (2017) Gabungan Metode Deteksi Islanding Berdasarkan Pergeseran Frekuensi Aktif dan Variasi Amplitudo Tegangan Pada Sistem Photovoltaic Terhubung Jala-Jala. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Islanding merupakan fenomena terputusnya grid dari sistem grid-connected distributed generation (DG) namun DG tetap terhubung dengan sistem dan tetap menyalurkan daya ke beban. Hal ini dapat menyebabkan permasalahan antara lain turunnya kualitas daya, kerusakan pada peralatan dan bahaya bagi pihak pekerja. Anti-islanding merupakan metode untuk melakukan deteksi terjadinya fenomena islanding agar DG berhenti mengalirkan daya menuju beban. Namun terdapat kelemahan pada metode anti-islanding konvensional, yaitu apabila terjadi islanding dan tidak ada perbedaan nilai daya antara daya yang dihasilkan oleh DG dengan daya yang diserap oleh beban maka deteksi akan gagal dilakukan. Sehingga diperlukan metode yang dapat menutupi kelemahan tersebut. Pada tugas akhir ini akan dilakukan simulasi gabungan metode deteksi islanding berdasarkan pergeseran frekuensi aktif dan variasi amplitudo tegangan. Penggunaan gabungan metode deteksi islanding bertujuan untuk melakukan deteksi baik dalam keadaan normal maupun keadaan khusus dimana tidak ada perbedaan nilai daya antara DG dengan beban. Hasil simulasi menunjukkan bahwa zona deteksi dari metode yang digunakan untuk beban linear dapat bekerja dengan rentang 0,9 lagging – 0,9 leading dan 0,4 kali daya nominal photovoltaic – 2,5 kali daya nominal photovoltaic.=========================================================================================================== Islanding is phenomenon when grid disconnected from distributed generation (DG) system, but DG still connected to the system and still continue transfer enegy to the load. This can cause problems such as power quality drops, equipment damage and hazards to workers. Anti-islanding is a method to detect the occurrence of islanding phenomenon so that DG stop flowing power to the load. However, there is a weakness in conventional anti-islanding methods, ie if islanding occurs and there is no difference in power value between power generated by DG with power absorbed by load then detection will fail. So that required method that can cover the weakness. In this final project will be simulated aggregation method of islanding detection based on active frequency shift and voltage amplitude variation. The use of the combined method aims to perform detection in both normal and special circumstances where there is no difference in power value between DG and load. The simulation results show that the detection zone of the method used for linear loads can work with a range of 0.9 lagging - 0.9 leading and 0.4 times nominal photovoltaic power - 2.5 times nominal photovoltaic power.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Sistem Photovoltaic Terhubung Jala-Jala, Pergeseran Frekuensi Aktif, Detection Zone, Photovoltaic’s System Grid-Connected, Active Frequency Drift
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1087 Photovoltaic power generation
Divisions: Faculty of Industrial Technology > Electrical Engineering > (S1) Undergraduate Theses
Depositing User: Septian Pramuditia Putra
Date Deposited: 19 Sep 2017 04:33
Last Modified: 19 Sep 2017 04:33
URI: http://repository.its.ac.id/id/eprint/42849

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