ANALISA SETTING GROUND FAULT RELAY(GFR) TERHADAP SISTEM PENTANAHAN NETRAL PENYULANG PANDEANLAMPER 06 JTM 20 KV SEMARANG

KHARISMA, MUHAMMAD IQBAL, C2B009003 (2016) ANALISA SETTING GROUND FAULT RELAY(GFR) TERHADAP SISTEM PENTANAHAN NETRAL PENYULANG PANDEANLAMPER 06 JTM 20 KV SEMARANG. Undergraduate thesis, Universitas Muhammadiyah Semarang.

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Abstract

ABSTRACT The operation of the distribution system has major problems in overcoming interference. In its development, electric power systems increasingly large currents cause electrical interference that may occur the greater. Therefore, they invented a system called neutral grounding.There is no ideal grounding neutral earthing throughout the distribution network Semarang cause neutral grounding resistance value. Neutral resistance values may cause a decrease in current flowing to ground disturbance that affects the sensitivity GFR (Ground Fault Relay) installed.Because of that, necessary to analyze the GFR setting the main feeder neutral earthing systems JTM 20 kV feeders Semarang by taking samples Pandealamper 06 to determine the condition of setting GFR installed in accordance with the neutral earthing systems.Results of the calculation of the noise current by entering the value of resistance neutral earthing exiting GFR values obtained ideal setting on the feeder Pandeanlamper 06 is not much different from the existing GFR setting value. Values of 0.27 Ω neutral earthing (existing) did not significantly influence the sensitivity GFR of the feeder PDL 06.GFR remained detect interference and work in accordance with the characteristic curve GFR.Based on the analysis, GFR mounted setting was appropriate and able to provide security in Pandeanlamper feeder 06. Key word: Neutral Grounding, GFR ,Main Feeder ABSTRAK Pengoperasian sistem distribusi mempunyai masalah utama dalam mengatasi gangguan. Dalam perkembangannya,sistem tenaga listrik yang semakin besar menyebabkan arus gangguan listrik yang mungkin terjadi semakin besar. Oleh sebab itu dibuatlah suatu sistem yang disebut pentanahan netral.Adanya Ketidakidealan pentanahan netral sepanjang jaringan distribusi Semarang menyebabkan nilai tahanan pentanahan netral. Nilai tahanan netral tersebut dapat menyebabkan penurunan arus gangguan ke tanah yang mengalir sehingga berdampak pada sensitivitas GFR (Ground Fault Relay) yang dipasang.Oleh karena itu perlu dilakukan analisa setting GFR terhadap sistem pentanahan netral penyulang utama JTM 20 kV Semarang dengan mengambil sampel penyulang pandealamper 06 untuk mengetahui kondisi setting GFR yang dipasang telah sesuai dengan sistem pentanahan netral tersebut.Dari hasil perhitungan terhadap arus gangguan dengan memasukkan nilai tahanan pentanahan netral exiting diperoleh nilai setting GFR ideal pada penyulang pandeanlamper 06 tidak jauh berbeda dengan nilai setting GFR existing. Nilai pentanahan netral sebesar 0,27 Ω (existing) tidak berpengaruh signifikan terhadap sensitivitas GFR pada penyulang PDL 06.GFR tetap mendeteksi gangguan dan bekerja sesuai dengan kurva karakteristik kerja GFR.Berdasarkan analisa tersebut,setting GFR yang dipasang sudah tepat dan mampu memberikan pengamanan pada penyulang Pandeanlamper 06. Kata kunci : Pentanahan Netral, GFR, Penyulang Utama

Item Type: Thesis (Undergraduate)
Contributors Thesis: 1. M.Toni Prasetyo,S.T,M.Eng 2. Luqman Assaffat,ST, MT, M.Kom
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering > S1 Electrical Engineering
Depositing User: perpus unimus
Date Deposited: 18 Feb 2019 05:22
Last Modified: 18 Feb 2019 05:22
URI: http://repository.unimus.ac.id/id/eprint/2901

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