1. Technical characteristics of wind turbine box type transformer
The wide fluctuation load adapts to the wind speed changes of the fan, resulting in frequent fluctuations of output power from 0 to 100%. The transformer optimizes the core loss and can withstand frequent light load and full load alternating impacts for a long time, adapting to intermittent power generation conditions.
The strong anti harmonic and low additional loss fan inverter generates a large amount of harmonics. It adopts a low eddy current loss winding structure to reduce harmonic heating and avoid insulation aging caused by long-term harmonics.
The all-weather outdoor anti-corrosion protection machine body adopts thickened anti-corrosion steel plate, and coastal models are equipped with salt spray anti-corrosion coating and sealing structure to resist erosion from rain, snow, sand, salt spray, and day night temperature difference.
Integrated with full functionality, compact structure, built-in low-voltage incoming line, protective fuse, vacuum circuit breaker, reactive power compensation, intelligent measurement and control terminal, temperature control, fire protection device, easy to lift, single fan independent layout, no need for additional supporting distribution room.
Resistant to short-term overload and impact, the fan can start and withstand large gust impact loads, and the dynamic and thermal stability margin of the transformer is increased. It can withstand 1.5 times the rated overload for a short period of time and cope with sudden changes in wind speed impact.
Remote intelligent monitoring is equipped with a distribution measurement and control device, which collects real-time voltage, current, temperature, and fault signals, and uploads them to the wind farm central control platform through communication to achieve unmanned operation and maintenance.
Multiple safety protection for high-voltage side circuit breakers and fuses with dual short-circuit protection; Transformer configuration with gas, oil temperature, and oil level protection; The cabin mechanical five prevention interlock prevents personnel from misoperation.
2. Product features
2.1 Design standards: GB, IEC
2.2 Capacity (MVA): 1 to 12
2.3 Voltage (KV): 10-35
2.4 Cooling method: AN/AF or ONAN
2.5 Installation position: fan tower bottom platform, mountain wind farm outdoor machine position, coastal mudflat fan machine position, and concrete foundation floor installation.
2.6 Application scenarios: onshore mountain wind farms, plain distributed wind farms, coastal mudflat wind farms, offshore wind power projects, distributed small wind turbines in villages and towns.
2.7 Insulation level
·Epoxy cast dry-type energy storage transformer: F-class insulation, temperature rise limit of 100K; H-class optional for high-temperature sealed containers;
·Oil immersed energy storage transformer: A-grade oil paper insulation;
2.8 Operating environment
Environmental temperature: -35 ℃ to+40 ℃;
Altitude: ≤ 2000m, customized for high-altitude mountain wind farms to strengthen insulation and increase heat dissipation;
Atmospheric conditions: onshore aircraft are resistant to sand, dust, and frost; Coastal aircraft models are resistant to high salt spray and high humidity, with a relative humidity of ≤ 98%; No strong explosive or corrosive gases;
Installation conditions: The foundation should be flat, the drainage should be smooth, and away from accumulated water. Coastal models should be equipped with anti-corrosion, anti condensation, and dehumidification devices.
2.9 Types
According to installation scenarios: onshore wind turbine transformer, offshore anti-corrosion wind turbine transformer;
According to the high voltage level: 10kV wind power box transformer, 35kV wind power box transformer;
