TRANSMISI DAYA LISTRIK
Transcript of TRANSMISI DAYA LISTRIK
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TRANSMISI DAYA LISTRIKHUBUNGAN ARUS DAN TEGANGAN
PADA SALURAN TRANSMISI
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Fungsi saluran transmisi yaitu :membawa tenaga listrik dari pusat pembangkit ke pusat beban melalui saluran tegangan tinggi atau ekstra tinggi
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Klasifikasi tegangan tinggi di IndonesiaTegangan nominal (kV) :
30 – 66 – 150 – 220 – 380 – 500Tegangan pelengkap (kV) :
36 – 72,5 – 170 – 245 – 420 – 525
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Klasifikasi saluran transmisi berdasarkan teganganTegangan tinggi :
138 kV
Tegangan ekstra tinggi :
220 – 765 kV
Tegangan ultra tinggi :
> 765 kV
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Klasifikasi saluran transmisi berdasarkan panjang penghantarJarak pendek :
< 80 km (50 mil)
Jarak menengah :
80 – 240 km (50 – 150 mil)
Jarak panjang :
>240 km (150 mil)
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Karakteristik penyaluran dayaTenaga listrik disalurkan melalui jaringan transmisi
dari pusat pembangkit yg disebut pangkal pengiriman / sending end menuju pusat beban yg disebut ujung penerimanan / receiving end
Semua perhitungan dilakukan berdasarkan hubungan satu fasa sistem bintang
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Perhitungan analisaMenghitung perbedaan antara tegangan pangkal
pengiriman dgn ujung penerimaMenghitung faktor daya pada pangkal pengiriman
dan ujung penerimaMenghitung daya guna transmisi yaitu daya
keluaran / daya masukan
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Pendekatan yang digunakanRangkaian yg parameter dan konstantanya
dikonsentrasikan (untuk jarak pendek)
Rangkaian yg parameter dan konstantanya didistribusikan di sepanjang saluran transmisi
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Karakteristik diagram pengganti jaraj pendekPengaruh kapasitansi diabaikan
Konstanta saluran yg diperhitungkan hanya impedansi saluran
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Rangkaian ekivalen jarak pendek
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Hubungan tegangan dan arusnya
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Pengaturan tegangan / voltage regulation
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Diagram pengganti jarak menengahPendekatan menggunakan rangkaian nominal T
atau rangkaian nominal π
Kapasitansi dipusatkan pada satu titik utk nominal T
Kapasitansi dipusatkan pada dua titik utk nominal π
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Rangkaian nominal T
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Rangkaian nominal π
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Pengaturan tegangan/voltage regulation
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