Analisis Implementasi Saturated Iron – Core Superconducting Fault Current Limiter pada Jaring Distribusi PT. PERTAMINA RU V BALIKPAPAN.

Muhammad Nur Fattah, Margo Pujiantara, Heri Suryoatmojo
Submission Date: 2017-01-13 07:44:05
Accepted Date: 2017-03-17 10:12:41

Abstract


Pada studi ini akan dilakukan analisis hubung singkat pada sistem distribusi PT. PERTAMINA RU V. Analisis hubung singkat dilakukan pada bus utama PT. PERTAMINA RU V dengan rating 6,6 kV dan melihat pada bus mana yang tidak mampu menahan besarnya arus gangguan karena adanya retrofit generator STG I-4 yang terhubung pada sistem kelistrikan PT. PERTAMINA RU V. Saat terjadi gangguan hubung singkat 3 fasa peak pada bus 2HT dan 3HT, rating bracing peak pada bus sebesar 78,75 kA tidak mampu menahan arus gangguan sebesar 84,72 kA. Agar tidak terjadi kerusakan pada bus tersebut, maka diperlukan sebuah device pembatas arus gangguan yaitu Saturated Iron – Core Superconducting Fault Current Limiter (SISFCL). SISFCL dipasang pada satu incoming yang terhubung ke bus 2HT dimana pada incoming ini menyumbang arus kontribusi. Setelah dipasang SISFCL, nilai arus gangguan pada bus 2HT dan 3HT berkurang dari 84,72 kA menjadi 73,12 kA. Arus gangguan pada incoming yang dipasang SISFCL juga akan berkurang sehingga setting koordinasi proteksi untuk rele arus lebih juga akan berubah untuk itu diperlukan setting ulang pada beberapa rele. Setting ulang rele ditunjukkan pada kurva TCC ( Time Current Curve).

Keywords


arus hubung singkat; koordinasi proteksi; kurva time current characteristic; rele arus lebih; SISFCL

References


IEEE Std 551TM – 2006, “IEEE Recommended Practice for Calculating Short-Circuit Currents in Industrial and Commercial Power Systems”, The Institute of Electrical and Electronics Engineers, Inc., New York, Ch. 2, 2006.

Li Bin, “Application Studies on the Active SISFCL in Electric Transmission System and its Impact on Line Distance Protection”, IEEE Transactions on Applied Superconductivity, 2013.

Hong Hui, “DC Magnetization System for a 35 kV/90 MVA Superconducting Saturated Iron-Core Fault Current Limiter”, IEEE Transactions on Applied Superconductivity, Vol. 19, No. 3, June 2009.

Wang Haizhen, “Saturated Iron Core Superconducting Fault Current Limiter”, International Conference on Electric Power Equipment (IEEE) – Switching Technology – Xi’an – China, 1st 2011.


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