Turbines per feeder
6
Calculadora de dimensionamiento de transformador de parque eólico
Dimensione el transformador de cada aerogenerador a partir de su potencia nominal y factor de potencia, luego diseñe los alimentadores colectores y el transformador principal elevador.
Para desarrolladores de parques eólicos e ingenieros eléctricos que seleccionan subestaciones tipo caja, tensiones de colector y transformadores de conexión a red para proyectos terrestres y marinos.
Usar la calculadora
Ejemplo resuelto
Un ejemplo de referencia precalculado (indexable — no requiere JavaScript). Introduzca sus propios parámetros arriba para obtener un resultado en vivo.
Ejemplo 1 — aerogeneradores de 4 MW, 20 unidades, colector de 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
Ejemplo 2 — aerogeneradores de 2 MW, 50 unidades, colector de 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
Cómo se calculó
- · Capacidad del transformador de caja: S = (P_turb × 1000) ÷ PF × margen, redondeado hacia arriba a un valor nominal estándar.
- · Carga del alimentador: cada alimentador colector transporta un MVA de diseño (≈30 MVA a 35 kV, ≈18 MVA a 10 kV).
- · Aerogeneradores por alimentador = floor(MVA del alimentador ÷ MVA del transformador de caja), limitado a ~10 por razones de tensión.
- · Número de alimentadores = ceil(aerogeneradores ÷ aerogeneradores por alimentador).
- · Transformador principal elevador nominal ≥ MVA total del colector a la tensión de colector/red.
Normas referenciadas
| Standard | Scope |
|---|---|
| IEC 60076 | Transformadores de potencia |
| IEC 61400-21 | Sistemas de generación de energía eólica — características de calidad de energía de aerogeneradores conectados a la red |
| GB/T 19963 | Regla técnica para la conexión de un parque eólico al sistema de potencia |
| GB/T 17468 | Guía para la selección de transformadores de potencia |
Preguntas frecuentes
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.
Incrustar esta calculadora
Añada esta calculadora a su propio sitio web de forma gratuita. El iframe se adapta a cualquier ancho y se ejecuta completamente en el navegador de su visitante.
Herramientas relacionadas
SelectionCalculadora de selección de transformadoresDesignConfigurador Híbrido de Energías RenovablesVerificationCalculadora de planta PV + interconexión a la red
Los resultados son estimaciones de ingeniería para diseño preliminar y referencia únicamente. Verifique siempre con las normas aplicables, la placa de características del equipo y un ingeniero autorizado antes de la compra o instalación.
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.