Turbines per feeder
6
Kalkulator Ukuran Transformator Box Ladang Angin
Ukur transformator box untuk setiap turbin angin dari daya pengenal dan faktor dayanya, lalu tata letak feeder kolektor dan transformator step-up utama.
Untuk pengembang ladang angin dan insinyur listrik yang memilih box substation, tegangan kolektor dan transformator koneksi grid untuk proyek onshore dan offshore.
Gunakan kalkulator
Contoh perhitungan
Contoh referensi yang telah dihitung sebelumnya (dapat dirayapi — tidak memerlukan JavaScript). Masukkan parameter Anda sendiri di atas untuk hasil langsung.
Contoh 1 — turbin 4 MW, 20 unit, kolektor 35 kV
Box transformer per turbine
5000 kVA
4 MW turbine · 20 units · 35/0.69 kV · Oil-immersed combined box transformer (35 kV)
Collector feeders
4
Main transformer
100 MVA
Total collector
100.0 MVA
Sizing calculation
| Turbine apparent power | 4 MW ÷ 1 × 1.05 = 4200 kVA (with 5% margin) |
| Standard box transformer | → 5000 kVA |
| Feeder capacity | 35 kV feeder ≈ 30 MVA |
| Turbines per feeder | 30 MVA ÷ 5.00 MVA = 6 (capped at 10) |
| Number of feeders | 20 ÷ 6 = 4 |
| Step-up main transformer | 100.0 MVA → 100 MVA · 35/110 kV |
Collector scheme
35 kV collector is suitable for feeder capacity up to ~30 MVA (6 turbines × 4 MW).
Bill of materials
| Equipment | Spec | Qty | Subtotal |
|---|---|---|---|
| Oil-immersed combined box transformer (35 kV) | 5000 kVA · 4 MW · 35/0.69 kV | 20 | POA |
| Collector network | 4 feeder(s) · 35 kV · 6 turbines per feeder | 1 | POA |
| Collector cable | YJV 3-core 35 kV XLPE · radial feeder (per feeder) | 4 | POA |
| Collector switchgear | 35 kV feeder breaker panels · 4 feeders + PT/SPD | 1 | POA |
| Step-up main transformer | 100 MVA · 35/110 kV | 1 | POA |
| Grounding & protection | collector system earthing + relay protection 50/51/51N + metering | 1 | POA |
| Total equipment (box transformers) | POA |
📐 Single-line diagram
Contoh 2 — turbin 2 MW, 50 unit, kolektor 10 kV
Box transformer per turbine
2500 kVA
2 MW turbine · 50 units · 10/0.69 kV · Oil-immersed box transformer (10 kV)
Turbines per feeder
7
Collector feeders
8
Main transformer
150 MVA
Total collector
125.0 MVA
Sizing calculation
| Turbine apparent power | 2 MW ÷ 0.95 × 1.1 = 2316 kVA (with 10% margin) |
| Standard box transformer | → 2500 kVA |
| Feeder capacity | 10 kV feeder ≈ 18 MVA |
| Turbines per feeder | 18 MVA ÷ 2.50 MVA = 7 (capped at 10) |
| Number of feeders | 50 ÷ 7 = 8 |
| Step-up main transformer | 125.0 MVA → 150 MVA · 10/35 kV |
Collector scheme
10 kV collector limits each feeder to ~18 MVA; consider 35 kV for larger clusters.
Bill of materials
| Equipment | Spec | Qty | Subtotal |
|---|---|---|---|
| Oil-immersed box transformer (10 kV) | 2500 kVA · 2 MW · 10/0.69 kV | 50 | POA |
| Collector network | 8 feeder(s) · 10 kV · 7 turbines per feeder | 1 | POA |
| Collector cable | YJV 3-core 10 kV XLPE · radial feeder (per feeder) | 8 | POA |
| Collector switchgear | 10 kV feeder breaker panels · 8 feeders + PT/SPD | 1 | POA |
| Step-up main transformer | 150 MVA · 10/35 kV | 1 | POA |
| Grounding & protection | collector system earthing + relay protection 50/51/51N + metering | 1 | POA |
| Total equipment (box transformers) | POA |
📐 Single-line diagram
Cara perhitungannya
- · Kapasitas transformator box: S = (P_turb × 1000) ÷ PF × margin, dibulatkan ke atas ke rating standar.
- · Pembebanan feeder: setiap feeder kolektor membawa MVA desain (≈30 MVA pada 35 kV, ≈18 MVA pada 10 kV).
- · Turbin per feeder = floor(MVA feeder ÷ MVA transformator box), dibatasi ~10 karena alasan tegangan.
- · Jumlah feeder = ceil(turbin ÷ turbin per feeder).
- · Transformator step-up utama dinilai ≥ total MVA kolektor pada tegangan kolektor/grid.
Standar yang dirujuk
| Standard | Scope |
|---|---|
| IEC 60076 | Transformator daya |
| IEC 61400-21 | Sistem pembangkit energi angin — karakteristik kualitas daya turbin terhubung grid |
| GB/T 19963 | Aturan teknis untuk menghubungkan ladang angin ke sistem tenaga |
| GB/T 17468 | Panduan untuk pemilihan transformator daya |
Pertanyaan yang sering diajukan
What is a wind farm box transformer?
A wind farm box Transformer (or pad-mounted transformer) steps each turbine's output (typically 0.69 kV) up to the collector voltage (35 kV). It is sized to the turbine rating, usually 1.1-1.3x the generator capacity. A 3 MW turbine uses a ~3.5 MVA box transformer.
How do I size a box transformer for a wind turbine?
Box transformer MVA = turbine generator MVA plus auxiliary and margin, typically 10-30% above generator rating. A 2.5 MW generator at 0.9 pf needs about 3.2 MVA, so select 3.5 MVA. The calculator sizes the transformer and the collector feeder scheme.
What is the typical collector voltage in a wind farm?
Wind farm collector systems run at 33 kV or 35 kV (sometimes 10 kV for small farms), gathering each turbine through a box transformer then ring or radial feeders to the Substation. 35 kV is standard for farms above ~20 MW. The calculator models the collector feeder scheme.
What standards govern wind farm transformers?
Wind farm box transformers follow IEC 60076 (transformers) and GB/T 17467 for pad-mounted designs, plus IEC 61400 for the wind turbine electrical interface. They must withstand frequent load cycling and grid fault ride-through. The calculator cites these standards in its design basis.
How do box transformers handle turbine load cycling?
Wind turbines cycle between partial and full load continuously, causing thermal stress and tap-changer wear. Box transformers use vacuum tap-changers or fixed taps, low-loss cores, and are designed for frequent energization and harmonic content from converters. The calculator selects ratings with this duty in mind.
Sematkan kalkulator ini
Tambahkan kalkulator ini ke situs web Anda sendiri secara gratis. Iframe menyesuaikan dengan lebar apa pun dan berjalan sepenuhnya di browser pengunjung Anda.
Alat terkait
SelectionKalkulator Pemilihan TransformatorDesignKonfigurator Hibrida Energi TerbarukanVerificationKalkulator Pembangkit PV + Interkoneksi Grid
Hasil adalah perkiraan teknik untuk desain awal dan referensi saja. Selalu verifikasi dengan standar yang berlaku, pelat nama peralatan, dan insinyur berlisensi sebelum pengadaan atau pemasangan.
Send my complete design report
Get the full bill of materials, single-line diagram, calculation steps and FOB pricing as a PDF — free, no sign-up.
Your data stays private. No spam — only a reply to your enquiry.