Power transformer · renewable booster
220 kV Double-Split Booster Transformer
220 kV double-split
Double-split transformer for offshore and onshore wind and photovoltaic 220 kV booster stations.
- Voltage class
- 220kV
- Avg. winding rise
- ≤ 55K
- PD at 1.58 Ur
- < 50pC
Overview
The double-split 220 kV transformer is used in 220 kV booster stations for offshore wind power and new-energy generation. Axial split technology and two independent power supplies improve the reliability and efficiency of transformer operation.
Self-adhesive transposed conductors keep the average winding temperature rise within 55 K. A non-partial-discharge design keeps partial discharge at 1.58 Ur below 50 pC, and the C5-M anti-corrosion process meets high salt-spray offshore conditions.
Design and performance
Functional features
- Voltage conversion
- AC voltage is boosted or stepped down by electromagnetic induction to meet the voltage requirement of each scenario.
- Power transmission
- Carries energy from the generation end to the user end while reducing line losses.
- Lightweight design
- Octagonal oil-tank structure reduces the weight of the tank and transformer oil by 10%.
- Operating-status monitoring
- Oil-surface and winding temperature, oil level, partial discharge, core grounding current and oil chromatography monitored online, with early warning.
- High anti-corrosion level
- Tank treated with the C5-M anti-corrosion process for high salt spray, mould and strong corrosion at sea.
Product advantages
- Low temperature rise
- Self-adhesive transposed conductor; winding temperature rise ≤ 60 K, 5 K or more better than the standard.
- Low noise
- Shock-absorbing rubber and sand filling; noise ≤ 62 dB(A), more than 3 dB(A) better than the standard.
- Low loss
- No-load loss 10% and load loss 5% better than the industry; efficiency above 99.6%.
- Low partial discharge
- Non-partial-discharge design and process treatment; PD ≤ 70 pC, more than 30% better than the standard.
- High short-circuit resistance
- Electromagnetic calculation and simulation, high-quality transposed conductor, self-locked internal and external support bars.
Application scope
- Low-loss power transformers to the GB 20052-2024 energy-efficiency standard, for power generation and transformation, urban and rural grid upgrades, industrial and mining enterprises, new-energy generation, steel and construction.
- Offshore and onshore photovoltaic and wind 220 kV double-split booster stations, using two independent power supplies to improve operating reliability.
- Floating offshore wind turbines in deep and open seas, and onshore wind farms far from load centres with long-distance transmission needs.
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Send the capacity, voltage ratio, vector group, impedance and site conditions. Engineering confirms the design against the approved project specification.