The Wind power Packaged European type Substation is a factory-assembled, compact power conversion unit specifically designed to collect medium-voltage electricity from one or multiple wind turbines, step it down (or up) to grid-compatible levels, and protect both the turbine and the utility network from electrical faults.
Unlike generic box substations, this unit is purpose-built for the unique demands of wind generation:
● High vibration tolerance: Reinforced internal busbars and anti-loosening hardware.
● Wide voltage swing accommodation: Handles output fluctuations from 400V (turbine terminal) to 35kV (collection grid).
● Remote monitoring ready: Integrated SCADA ports for turbine control rooms.
Physically, the Wind power Packaged European type Substation maintains the classic European three-compartment architecture (HV side, transformer, LV side) but adds wind-specific features: a dedicated interface protection relay, harmonic filtering terminals, and a weatherproof enclosure rated for coastal salt spray.
Primary function: Acts as the electrical interface between a wind turbine generator and the medium-voltage collection network.
1. Voltage transformation: Converts the turbine's output voltage (typically 690V) to collection grid voltage (10kV–35kV) using a step-up transformer located inside the unit.
2. Fault isolation: Automatically disconnects the turbine if grid parameters (voltage, frequency) drift outside permissible limits, protecting both assets.
3. Power quality conditioning: Provides grounding, surge arresters, and filtering points to mitigate harmonics generated by variable-frequency drives inside the turbine.
4. Energy metering & monitoring: Houses utility-grade CTs and PTs for feed-in tariff measurement and remote performance tracking.
Because the Wind power Packaged European type Substation arrives fully pre-wired and tested, wind farm developers avoid months of on-site electrical assembly. One unit serves either a single large turbine (2MW–6MW) or a small cluster of smaller turbines in a "daisy chain" configuration.

Below are the standard technical specifications for the Wind power Packaged European type Substation from Lugao Power. Custom ratings available upon request.
|
Parameter |
Standard Value |
Optional Range |
|
Rated Power (kVA) |
2000 kVA |
1000 kVA – 8000 kVA |
|
High Voltage Side (kV) |
35 kV |
10kV, 20kV, 33kV, 35kV |
|
Low Voltage Side (V) |
690 V |
400V, 480V, 690V (turbine standard) |
|
Transformer Type |
Oil-immersed, ONAN cooling |
Cast resin dry-type, or natural ester fluid |
|
Frequency |
50 Hz |
60 Hz (export version) |
|
Impedance Voltage |
6% |
4% – 8% |
|
No-load Loss |
≤ 1.8 kW (for 2MVA) |
Amorphous core: ≤ 0.9 kW |
|
Load Loss (75°C) |
≤ 15 kW (for 2MVA) |
Depends on core grade |
|
HV Switchgear Type |
SF6 Ring Main Unit (RMU) with load break switch + fuse |
Vacuum circuit breaker (for >4MVA) |
|
LV Switchgear |
ACB (Air Circuit Breaker) + MCCBs |
Smart digital protection relay included |
|
Enclosure Protection |
IP54 (standard) |
IP65 (dust-proof, high-pressure jets) |
|
Enclosure Material |
2.0mm galvanized steel, powder-coated |
GRP composite (zero corrosion for offshore) |
|
Operating Temperature |
-25°C to +50°C |
-40°C to +55°C (cold climate package) |
|
Altitude |
≤ 1000m |
≤ 3000m (derating applies) |
|
Seismic Capability |
Zone 2 (0.2g) |
Zone 4 (0.4g) with reinforced base |
|
Internal Monitoring |
Oil temperature, pressure, door status |
Remote vibration sensor, partial discharge monitoring |
|
Dimensions (L×W×H) |
4200mm × 2400mm × 2500mm (for 2MVA) |
Varies with power rating |
|
Weight (approx.) |
6500 kg (oil filled) |
Dry type: approx. 20% lighter |
|
Compliance |
IEC 62271-202, IEC 60076 |
IEEE (North America) upon request |

Q1: What makes the Wind Power Packaged European Type Substation different from a standard European substation?
A: Three wind-specific features. First, the transformer inside a Wind power Packaged European type Substation is designed for bi-directional power flow and frequent voltage fluctuations—turbines ramp up and down constantly. Second, the LV compartment includes a dedicated grid interface protection relay that trips within 100ms if grid voltage or frequency drifts, as required by utility interconnection standards (e.g., IEEE 1547, IEC 61727). Third, the entire enclosure uses anti-vibration mounts on all electrical contacts; standard units would see screw loosening after six months near a turbine.
Q2: How does this unit handle lightning strikes common in open wind farms?
A: Every Wind power Packaged European type Substation comes equipped with Type 1+2 surge arresters on both HV and LV sides (discharge capacity 25kA per pole). Additionally, the transformer tank has a direct grounding lug sized for 120mm² copper cable. In our factory test, we simulate 10/350μs lightning impulses up to 100kA without internal flashover.
Q3: Can this substation be used for both onshore and offshore wind?
A: Onshore—absolutely. For offshore, we offer an upgraded version called the "Offshore Package." The standard Wind power Packaged European type Substation has IP54 rating, suitable for onshore coastal zones. For offshore (on turbine platform or jacket foundation), we upgrade to IP66, use C5-M marine-grade coating (over 400μm thick), and replace all standard steel bolts with 316L stainless steel. The transformer oil is replaced with natural ester (biodegradable) to meet environmental regulations.
Q4: What are the most common application scenarios for this unit?
A: Four primary applications:
|
Application |
Typical Rating |
Key Requirement |
|
Single large turbine (2MW–6MW) |
2000–6000 kVA |
Pad-mounted next to turbine tower; compact footprint |
|
Wind cluster collection point |
4000–8000 kVA |
One unit serving 2–4 small turbines (500kW each) via underground cables |
|
Repowering old wind farms |
1500–3000 kVA |
Replaces aging American-type units; offers modern remote monitoring |
|
Hybrid wind + solar farm |
2000 kVA |
Dual LV inputs (one for wind, one for solar PV) with automatic source switching |

How Lugao Power Builds a Better Wind Power Packaged European Type Substation
Most substation failures in wind farms trace back to loosened connections from constant turbine oscillation (0.5–2 Hz). Our solution: every busbar connection uses Belleville disc springs under the bolt head, maintaining clamping force even as components vibrate. Terminal blocks are cage-clamp type (not screw-clamp). Internal cable ties are replaced with stainless steel locking straps. Result: after 5,000 hours of simulated vibration (2g, 5–200Hz sweep), torque retention remains >90% of initial value.
Standard distribution transformers see steady loads. Wind transformers see rapid swings from 0% to 110% in under 10 seconds. Our Wind power Packaged European type Substation uses a high-short-circuit-strength core with axial clamping pressure of 4.5 MPa (vs. industry standard 2.5 MPa). Windings are continuously transposed conductors (CTC) rather than multiple parallel strands, eliminating circulating current losses during unbalanced loads. We also add fiber optic temperature sensors embedded directly in the LV winding—not just top oil thermometers—giving real-time hotspot data to the turbine controller.
Wind farms sit in Class C3 (inland) to C5-M (offshore) environments. Standard powder coating fails at cut edges. Our process:
1. Edge sealing: Every laser-cut edge receives a bead of epoxy edge sealer before painting.
2. Zinc-rich primer: 80μm of 95% zinc dust epoxy primer (sacrificial protection).
3. Intermediate coat: 100μm of high-build epoxy.
4. Topcoat: 80μm of polyurethane (RAL 7035 light gray, or custom).
Total DFT (dry film thickness) = 260μm minimum. Salt spray tested to 1,500 hours without creep (ASTM B117).
Our Advantage vs. Competitors
|
Aspect |
Typical Competitor |
Lugao Power |
|
Vibration testing |
None or "visual inspection" |
5,000-hour shaker table with live monitoring |
|
Corrosion protection |
Single powder coat (80–120μm) |
3-coat system (260μm) + edge sealing |
|
Transformer winding |
Standard round wire |
CTC windings + fiber optic sensors |
|
Documentation |
Generic manual |
Site-specific drawings, FAT report with oscillograms |
|
Lead time (2MVA unit) |
45–60 days |
28 days (due to stocked components) |
|
Remote support |
Email only |
Live video call with oscilloscope sharing |
10+ Years of Power Equipment Manufacturing
Dedicated Transformer and MV Switchgear Engineering Team
Wind Power Substation Solutions from 1MVA to 8MVA
Factory Testing Before Shipment
Customized Designs for Onshore and Coastal Wind Projects
IEC-Compliant Manufacturing and Testing

Address
No. 19, Keaisi Road, Xiangyang Industrial Zone, Liushi Town, Yueqing City, China
Tel
Share your specs: Voltage level (e.g., 11kV, 33kV), rated capacity (kVA/MVA), and installation environment (Indoor/Outdoor).
Our engineering review: We analyze your load profile and short-circuit requirements (2-4 hours).
Deliverables: You'll receive a preliminary GA drawing, technical datasheet, and commercial offer within 24 working hours.
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