OUTLINE 01

PT. MANHA DAYA MANDIRI
Jl. Abdurahman Saleh No.58, Bandung 40174
Jawa Barat
Telp/Fax : (022) 6021051
PEKERJAAN JASA DETAIL ENGINEERING DESIGN (DED)
JARINGAN DISTRIBUSI 20 KV PLTM CIBUNI MANDIRI (2x1 MW)
DI DESA GIRIMUKTI, KECAMATAN PASIRKUDA,
KABUPATEN CIANJUR
LAPORAN AKHIR
Maret 2020
PT. BRAWISI ENERGY CONSULT
Jl. Pala Raya, No.10 - Tangerang Selatan
Telp. 081 314 023 051
Email : [email protected], [email protected]
Website : www.brawisi-energy.com
DAFTAR ISI
BAB 1
PENDAHULUAN ...................................................................................................................... 1
1.1
Umum..................................................................................................................................... 1
1.2
Lokasi Pekerjaan ..................................................................................................................... 2
1.3
Lingkup Pekerjaan .................................................................................................................. 3
1.4
Metodologi Pelaksanaan ........................................................................................................ 4
1.5
Informasi Proyek .................................................................................................................... 5
1.6
Sistematika Penyajian Laporan ............................................................................................... 6
BAB 2
KRITERIA PERENCANAAN KONSTRUKSI JARINGAN DISTRIBUSI 20 KV .................................... 8
2.1
Kemampuan Hantar Arus ....................................................................................................... 8
2.1.1
Kemampuan Hantar Arus Saluran Udara ........................................................................ 8
2.1.2
Kemampuan Hantar Arus Saluran Kabel Bawah Tanah .................................................. 8
2.2
Gaya-gaya mekanis pada tiang ............................................................................................. 10
2.2.1
Jarak Antar Tiang (Jarak Gawang) ................................................................................. 11
2.2.2
Berat Penghantar dan Gaya Berat Penghantar ............................................................. 11
2.2.3
Gaya Tarik Pada Tiang ................................................................................................... 12
2.2.4
Pengaruh Angin ............................................................................................................ 13
2.2.5
Gaya Mekanis Pada Tiang Awal/Ujung ......................................................................... 14
2.2.6
Gaya Mekanis Pada Tiang Tengah ................................................................................ 14
2.2.7
Gaya Mekanis Pada Tiang Sudut ................................................................................... 14
2.2.8
Aplikasi Perhitungan Gaya Mekanis .............................................................................. 15
2.2.9
Penggunaan Hasil Perhitungan Dalam Konsep Perencanaan ....................................... 16
2.3
Beban Mekanik pada Palang (cross arm / travers) ............................................................... 18
2.4
Beban Mekanis Isolator ........................................................................................................ 18
2.5
Pondasi Tiang dan Struktur Tanah ........................................................................................ 20
2.6
Jarak antar Penghantar (conductor spacing) ........................................................................ 20
2.7
Kriteria Perencanaan Konstruksi SUTM ................................................................................ 21
2.7.1
Terminologi .................................................................................................................. 21
2.7.2
Konstruksi dan Jarak Antar Tiang .................................................................................. 21
2.7.3
Fondasi Tiang ................................................................................................................ 24
2.7.4
Konstruksi Tiang (Pole Top Construction) ..................................................................... 24
2.7.5
Konstruksi Pembumian ................................................................................................. 29
2.7.6
Konstruksi Penghantar Netral Tegangan Menengah .................................................... 29
2.7.7
Kelengkapan Penghantar (schooncable , Tap Connector, Joint Sleeve) ........................ 30
2.7.8
Jarak Aman (savety distance )....................................................................................... 30
2.7.9
Konstruksi Proteksi Petir ............................................................................................... 30
2.7.10 Konstruksi Kabel Pilin Tegangan Menengah ................................................................. 31
2.7.11 Sambungan Kabel Dengan Saluran Udara .................................................................... 31
2.7.12 Sambungan Kawat Konduktor ...................................................................................... 31
2.7.13 Komponen Konstruksi Jaringan .................................................................................... 31
2.8
Kriteria Desain Konstruksi Saluran Kabeh Bawah Tanah Tegangan Menengah .................... 33
2.8.1
Konstruksi Penggelaran Kabel....................................................................................... 33
2.8.2
Penggelaran lebih dari 1 (satu) kabel............................................................................ 34
2.8.3
Jarak kabel tanah dengan utilitas lain ........................................................................... 34
2.8.4
Persilangan dengan bangunan diatas tanah ................................................................. 35
2.8.5
Persilangan dengan rel kereta api ................................................................................ 35
2.8.6
Persilangan dengan saluran air dan bangunan air ........................................................ 35
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2.8.7
Persilangan dengan jalan umum................................................................................... 35
2.8.8
Terminasi Kabel ............................................................................................................ 36
2.8.9
Radius belokan kabel .................................................................................................... 36
2.8.10 Transportasi Dan Penanganan (Handling) Kabel .......................................................... 36
2.8.11 Material Saluran Kabel Tanah ....................................................................................... 37
2.9
Kriteria Desain Konstruksi Gardu Distribusi .......................................................................... 38
2.9.1
Konstruksi Gardu Beton (Masonry Wall Distribution Substation) ................................. 39
2.9.2
Susunan Tata Ruang ..................................................................................................... 39
2.9.3
Instalasi Perlengkapan Hubung Bagi TeganganMenengah (PHB–TM) .......................... 40
2.9.4
Instalasi Perlengkapan Hubung Bagi Tegangan Rendah (PHB –TR) ............................... 41
2.9.5
Instalasi Pembumian .................................................................................................... 42
2.9.6
Transformator .............................................................................................................. 42
2.9.7
Instalasi Kabel Tegangan Menengah dan Tegangan Rendah ........................................ 43
2.9.8
Gardu Kios ( Metalclad) ................................................................................................ 44
2.9.9
Gardu Portal Dan Cantol ............................................................................................... 44
2.9.10 Konstruksi Gardu Portal ................................................................................................ 44
BAB 3
HASIL DESIGN ....................................................................................................................... 51
3.1
Project Layout ...................................................................................................................... 51
3.2
Pemilihan Konduktor Jaringan Distribusi .............................................................................. 52
3.3
Saluran Udara Tegangan Menengah (SUTM) ........................................................................ 52
3.3.1
Parameter dan spesifikasi Kabel SUTM......................................................................... 52
3.3.2
Jarak gawang ................................................................................................................ 53
3.3.3
Analisa sagging (andongan) .......................................................................................... 54
3.3.4
Gaya dan Tegangan yang terjadi pada tiang ................................................................. 56
3.3.5
Uji Kekuatan Material Tiang ......................................................................................... 58
3.3.6
Ringkasan Design Tiang SUTM ...................................................................................... 62
3.3.7
Pondasi Tiang SUTM ..................................................................................................... 62
3.3.8
Pemilihan Dimensi Cross Arm ....................................................................................... 63
3.3.9
Pemilihan Isolator ......................................................................................................... 64
3.3.10 Jarak antar penghantar (conductor spacing) ................................................................ 64
3.3.11 Ground Steel Wire (GWS) pada jaringan Distribusi 20kV.............................................. 65
3.4
Saluran Kabel Tegangan Menengah (SKTM) ......................................................................... 66
3.4.1
Konstruksi Penggelaran Kabel....................................................................................... 66
3.4.2
Material Saluran Kabel Tanah ....................................................................................... 67
3.5
Perencanaan Gardu Hubung PLTM Cibuni Mandiri .............................................................. 69
3.5.1
Penentuan Kapasitas Peralatan .................................................................................... 70
BAB 4
SPESIFIKASI TEKNIS DAN METODE KERJA ............................................................................. 71
4.1
Pendahuluan ........................................................................................................................ 71
4.2
Material dan Peralatan Jaringan SUTM 20 kV ...................................................................... 71
4.2.1
Konduktor ..................................................................................................................... 71
4.2.2
Tiang Beton................................................................................................................... 72
4.2.3
Pentanahan Tiang Beton .............................................................................................. 72
4.2.4
Konstruksi GSW ............................................................................................................ 73
4.2.5
Cross-Arm ..................................................................................................................... 73
4.2.6
Angkur dan Penegang ................................................................................................... 74
4.2.7
Isolator ......................................................................................................................... 74
4.2.1
Penangkap Petir (Lightning Arrester) ............................................................................ 75
4.3
Material dan Peralatan Kabel Tanah (SKTM) 20 kV .............................................................. 76
4.3.1
Konduktor ..................................................................................................................... 76
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4.3.2
Cable Termination ........................................................................................................ 77
4.4
Material dan Peralatan Interkoneksi 20 kV GH Cibuni Mandiri ............................................ 77
4.4.1
Incoming Cubicle PLTM Cibuni Mandiri ........................................................................ 77
4.4.2
Outgoing Cubicle Feed. PANI ........................................................................................ 78
4.4.3
2 Unit Bus Connecting Kubikel (Couple) ....................................................................... 79
4.4.4
kWh Metering Cubicle .................................................................................................. 80
4.5
Pengujian (Testing) ............................................................................................................... 82
4.5.1
Pengujian di Lapangan .................................................................................................. 82
4.5.2
Pengujian Lengkap ........................................................................................................ 82
BAB 5
BIAYA PEKERJAAN JARINGAN DISTRIBUSI 20 KV ................................................................... 83
5.1
Umum................................................................................................................................... 83
5.2
Volume Pekerjaan ................................................................................................................ 83
5.3
Harga satuan Pekerjaan ........................................................................................................ 83
5.4
Biaya Pekerjaan .................................................................................................................... 83
BAB 6
KESIMPULAN DAN REKOMENDASI ....................................................................................... 84
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DAFTAR GAMBAR
Gambar 1-1 Peta Lokasi PLTM Cibuni Mandiri ....................................................................................... 3
Gambar 1-2 Kondisi Jalan kabupaten dan Akses Masuk Menuju lokasi PLTM ....................................... 3
Gambar 1-3 Bagan alir pelaksanaan DED jaringan distribusi 20 kV ........................................................ 5
Gambar 2-1 Ilustrasi span dan weighted span ..................................................................................... 11
Gambar 2-2 Terminologi Saluran Udara Tegangan Menengah (SUTM)................................................ 21
Gambar 2-3 Konstruksi Pemasangan Pole Support. ............................................................................. 22
Gambar 2-4 Konstruksi Pemasangan Pole Support. ............................................................................. 23
Gambar 2-5Konstruksi Pemasangan Tee‐Off........................................................................................ 23
Gambar 2-6 Konstruksi PemasanganTiang Sudut Kecil. ....................................................................... 23
Gambar 2-7 Konstruksi Pemasangan Tiang Sudut Sedang. .................................................................. 27
Gambar 2-8 Konstruksi Pemasangan Tiang Sudut Besar. ..................................................................... 27
Gambar 2-9 Konstruksi Pemasangan Tiang Peregang. ......................................................................... 28
Gambar 2-10 Kabel tanah berisolasi XLPE ............................................................................................ 33
Gambar 2-11Peletakan (lay‐out) Perlengkapan Gardu Distribusi Beton. ............................................. 40
Gambar 2-12A.Jenis‐jenis Sambungan pada RMU. .............................................................................. 47
Gambar 2-13 B.Jenis‐jenis Sambungan pada RMU. .............................................................................. 47
Gambar 3-1 Layout Jaringan Distribusi 20 kV PLTM Cibuni Mandiri ..................................................... 51
Gambar 3-2 sketsa gaya-gaya yang bekerja pada tiang awal (kiri), pada tiang tumpu (kanan) ............ 57
Gambar 3-3 Konstruksi Guy Wire ......................................................................................................... 60
Gambar 3-4 Jenis Pondasi SUTM .......................................................................................................... 63
Gambar 3-5 Konstruksi GWS pada tiang Distribusi .............................................................................. 65
Gambar 3-6 Lokasi Jalur SKTM Powerhouse (kiri), Jalur SKTM GH (kanan) .......................................... 66
Gambar 3-7 Denah GH Cibuni Mandiri ................................................................................................. 69
Gambar 3-8 SLD Panel sitribusi 20 kV GH Cibuni Mandiri .................................................................... 69
DAFTAR TABEL
Tabel 1-1 Pencapaian Lokasi Rencana PLTM Cibuni Mandiri .................................................................. 2
Tabel 2-1 KHA Penghantar tidak Berisolasi ............................................................................................ 9
Tabel 2-2 KHA Kabel Tanah Inti Tunggal Isolasi XPLE.............................................................................. 9
Tabel 2-3 KHA Kabel Tanah Isolasi XPLE, Pada Suhu Tanah 300C............................................................ 9
Tabel 2-4 Faktor Reduksi Kabel Multi Core/Single Core dengan konfigurasi sejajar didalam tanah..... 10
Tabel 2-5 Faktor Reduksi KHA kabel XPLE untuk beberapa ukuran temperatur udara ........................ 10
Tabel 2-6 Karakteristik penghantar Kabel Pilin inti Alumunium Tegangan Rendah (NFAAX‐T) dengan
penggantung jenis Almelec (breaking capacity 1755 daN)................................................................... 13
Tabel 2-7 Karakteristik penghantar All Alumunium Alloy Conductor (AAAC)........................................ 13
Tabel 2-8Tabel Gaya mekanis pada Tiang Awal/Ujung......................................................................... 15
Tabel 2-9Gaya maksimum pada Tiang Sudut jaringan distribusi tenaga listrik ..................................... 16
Tabel 2-10 Kekuatan Tarik Tiang Awal/Ujung (working load) JTM ....................................................... 16
Tabel 2-11Kekuatan Tiang Sudut (working load) saluran fasa‐3 konstruksi underbuilt JTM/JTR, Span =
50 meter ............................................................................................................................................... 17
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Tabel 2-12Kekuatan Tiang Sudut (working load) saluran fasa‐3 konstruksi underbuilt JTM/JTR, Span =
90 meter ............................................................................................................................................... 17
Tabel 2-13 Karakteristik Palang ............................................................................................................ 18
Tabel 2-14 Karakteristik Isolator .......................................................................................................... 19
Tabel 2-15Karakteristik teknis Isolator Payung dan Long Rod. ............................................................. 19
Tabel 2-16 Data Klasifikasi kondisi tanah untuk membuat berbagai macam pondasi tiang. ................ 20
Tabel 2-17 Jarak Aman (savety distance) ............................................................................................. 30
Tabel 2-18 Jarak Kabel tanah................................................................................................................ 34
Tabel 2-19Penggelaran Kabel tanah pada persilangan dengan saluran air .......................................... 35
Tabel 2-20 Spesifikasi Teknis PHB‐TR. .................................................................................................. 41
Tabel 2-21Instalasi Pembumian pada Gardu Distribusi Beton. ............................................................ 42
Tabel 2-22Pemilihan Rated Current HRC fuse –TM. ............................................................................. 43
Tabel 2-23 Spesifikasi Pengaman Lebur (NH‐Fuse) Tegangan Rendah. ................................................ 45
Tabel 2-24 Spesifikasi Fuse Cut‐Out (FCO) dan Fuse Link (expulsion type) Tegangan ........................... 46
Tabel 3-1 Besar Nilai KHA Terhadap arus maximal ............................................................................... 52
Tabel 3-2 Lokasi tiang SUTM dan Jarak Gawang dari PH ke GH............................................................ 54
Tabel 3-5Perhitungan Lendutan Cable ................................................................................................. 56
Tabel 3-6 Perhitungan Gaya-gaya yang terjadi pada tiang ................................................................... 58
Tabel 3-7 Rinkasan design tiang SUTM PH menuju GH Meter ............................................................. 62
Tabel 3-10 Summary Design Cross Arm Jaringan Double Sirkit (PH ke GH) .......................................... 63
Tabel 3-13 Jarak Kabel tanah................................................................................................................ 67
DAFTAR LAMPIRAN
Lampiran 1 Rincian Biaya Konstruksi Fasilitas Penyambungan PLTM Cibuni Mandiri .......................... 85
Lampiran 2 Gambar Design .................................................................................................................. 86
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