PRODUCT OVERVIEWS
CEEG oil-immersed transformer for energy storage is specially designed for energy storage systems (ESS). It features strong short-circuit and harmonic resistance, efficient temperature control and cooling management, advanced insulation and material technology, and a compact modular structure. In addition, it offers excellent corrosion resistance and environmentally friendly characteristics. This product is widely applicable to renewable energy grid integration and battery storage system integration, ensuring reliable performance and strong adaptability.
Product Features
1. The transformer core cross-section adopts an oval-like structure, which is more compact and provides significantly improved resistance to sudden short circuits compared with the traditional long-oval design. It has successfully passed the sudden short-circuit withstand test conducted by Shenyang Transformer Research Institute.
2. The transformer core clamps are made of high-density electrical laminated wood, making the overall structure more compact while also helping to suppress stray losses caused by leakage flux.
3. By adjusting the internal body positioning and switch installation method, the high-voltage riser has been redesigned into a structure without hand holes, thereby reducing the risk of oil leakage.
Quality Control
The transformer is designed with full consideration of harmonic current losses, preventing the top oil temperature and winding temperature rise from exceeding specified limits. At the same time, the capacity increase demand caused by harmonic currents is also taken into account, ensuring the service life of the transformer.
For each batch of products of the same model, 10% of the total units (at least one unit) are randomly selected for lightning impulse and temperature rise tests, further ensuring the electrical and mechanical performance of the product.
Implementation Standards
GB/T 1094.1 Power Transformers - Part 1: General
GB/T 1094.3 Power Transformers - Part 3: Insulation Levels, Insulation Tests, and External Insulation Air Clearances
GB/T 1094.5 Power Transformers - Part 5: Short-Circuit Withstand Ability
GB/T 1094.16 Power Transformers - Part 16: Wind Power Transformers
GB/T 6451 Technical Parameters and Requirements for Oil-Immersed Power Transformers
GB20052 Energy Efficiency Limits and Energy Efficiency Grades for Power Transformers
IEC60076-20 Power transformers –Part 20: Energy efficiency
