The CEEG energy storage oil transformers, specifically designed for use in energy storage systems (ESS), offer enhanced short-circuit resistance, harmonic mitigation, temperature and cooling management, advanced insulation and material selection, compact and modular design, and corrosion and environmental resistance. These performances makes it suitable for integrating with renewable energy sources and battery storage systems.
1. The traditional long oval iron core has been modified into a quasi-elliptical structure, tested and validated for resistance to sudden short circuits. This enhances the transformer's ability to handle short-circuit events in renewable energy applications.
2. High-density laminated wood is used for clamping components, and adjustments to the copper bar outgoing lines have significantly reduced the internal width of the oil tank, making the overall structure more compact. This also helps suppress stray losses caused by leakage magnetic fields.
3. The internal positioning of the core and winding assembly and the switch installation method have been improved. The high-voltage riser seat has been redesigned to a structure without hand holes, reducing the risk of oil leakage.
Quality Control:
1. Ensures that partial discharge levels remain ≤50pC at 1.2Ur and ≤100pC at 1.4Ur.
2. For each batch of products, at least 10% (with a minimum of 1 unit) are subjected to lightning impulse and temperature rise tests to further ensure insulation and mechanical performance.
3. Take into consideration of the harmonic current magnitude and frequency provided by the client and the harmonic current losses to prevent top-oil and winding temperature rises beyond the specified limits. The requirement for capacity increase due to harmonic currents are also considered to extend the transformer's service life.
4. Corrosion prevention treatments are applied based on client requirements and the operational environment, ensuring durability under various conditions.
Product Structure:
1. The traditional long oval iron core has been modified into a quasi-elliptical structure, tested and validated for resistance to sudden short circuits. This enhances the transformer's ability to handle short-circuit events in renewable energy applications.
2. High-density laminated wood is used for clamping components, and adjustments to the copper bar outgoing lines have significantly reduced the internal width of the oil tank, making the overall structure more compact. This also helps suppress stray losses caused by leakage magnetic fields.
3. The internal positioning of the core and winding assembly and the switch installation method have been improved. The high-voltage riser seat has been redesigned to a structure without hand holes, reducing the risk of oil leakage.
Quality Control:
1. Ensures that partial discharge levels remain ≤50pC at 1.2Ur and ≤100pC at 1.4Ur.
2. For each batch of products, at least 10% (with a minimum of 1 unit) are subjected to lightning impulse and temperature rise tests to further ensure insulation and mechanical performance.
3. Take into consideration of the harmonic current magnitude and frequency provided by the client and the harmonic current losses to prevent top-oil and winding temperature rises beyond the specified limits. The requirement for capacity increase due to harmonic currents are also considered to extend the transformer's service life.
4. Corrosion prevention treatments are applied based on client requirements and the operational environment, ensuring durability under various conditions.
