CEEG 220kV Oil-Immersed Power Transformer
The 220kV oil-immersed power transformer is widely used in high-temperature and high-load operating environments. It is designed to withstand heavy loading conditions while effectively handling load fluctuations and sustained overload challenges. This transformer is particularly suitable for industries requiring highly reliable and continuous power supply, such as steel plants, metallurgy, railways, power plants, and hydropower stations. It ensures stable system operation and enhances the safety and reliability of electrical power transmission.
Scope of application
Main Grid Hub
Used in regional transmission and substation hub systems, with a strong focus on partial discharge control and long-term operational reliability.
Energy Generation Base
Applied in large-scale power evacuation projects, emphasizing low energy loss and optimized design for extended service life.
Inter-Regional Power Transmission
Suitable for long-distance transmission corridors, focusing on stable performance and reliable continuous operation over extended periods.
Product Description
1 Fully Enclosed Clean Manufacturing Process:Produced in a temperature- and humidity-controlled, dust-free environment with strict process control to ensure higher manufacturing consistency and product quality.
2 Seven-Level Thermal Control Optimization:Advanced seven-stage temperature control system combined with thermal field simulation ensures optimized insulation configuration and precise temperature management.
3 Segmented Noise Reduction Design:Targeted noise control measures are applied to different noise sources, resulting in operating noise levels that outperform national standards.
4 Multi-Layer Sealing Verification:Uses one-piece molded sealing components combined with fluorescent inspection and positive/negative pressure leak testing, significantly reducing the risk of oil leakage.
5 Advanced Core Manufacturing Technology:Equipped with imported transverse cutting and fully automated core stacking lines, reducing no-load losses by approximately 20% compared to conventional processes.
6 Short-Circuit Performance Validation:Successfully passed national certified laboratory sudden short-circuit tests on the first attempt, demonstrating superior structural strength and operational reliability.
Product Features
Low Loss Performance
No-load losses are reduced by more than 10% compared with current national standards, while load losses are reduced by over 5%, ensuring overall performance meets and complies with energy efficiency requirements.
Low Noise Design
Under natural cooling conditions, noise levels are controlled below 60 dB. For special applications, customized ultra-low-noise transformer solutions are available upon request.
High Reliability
Strong short-circuit withstand capability and excellent environmental adaptability ensure stable operation in complex and demanding power grid conditions.
Enhanced Thermal Dissipation
High-quality insulating oil combined with an advanced cooling structure effectively reduces operating temperature, helping to extend service life and improve long-term reliability.
Leak-Proof Sealing Design
Optimized tank structure and sealing system significantly reduce the risk of oil leakage, making the transformer suitable for long-term outdoor operation.
Online Monitoring System
Supports real-time monitoring of oil temperature, winding temperature, gas conditions, and partial discharge, enabling early fault warning and reducing unplanned outages.
Main Parameters
Rated Capacity 50 kVA – 1000 MVA
Rated Voltage High voltage side 220kV / Low voltage side 0.4kV
Rated Frequency 50Hz or 60Hz
Vector Group Common options include Dyn11, Yyn0, Yd11
Insulation Class Typically Class A or Class F
Implementation Standard
GB 1094 Power transformers
GB/T 6451 Technical specifications and requirements for oil-immersed power transformers
GB/T 10228 Technical specifications and requirements for power transformers
IEC 60354 Transformer load guide
ISO 14001 Environmental management system standards
Technical Advantages
R&D Cloud Platform
An integrated digital platform combining electromagnetic optimization design, parametric modeling, performance analysis, structural optimization, and automatic drawing generation. It enables transformer design resource sharing and efficient data management, including search, modification, and version control.
Simulation Analysis
Comprehensive multi-physics simulation covering fluid flow, thermal field, electric field, leakage magnetic field, transient processes, and short-circuit forces. Each transformer series is optimized through thermal and flow analysis to accurately control winding temperature rise and hotspot distribution, ensuring reliable and stable performance.
Smart Operation & Maintenance Platform
By collecting key data such as temperature, current, voltage, vibration, and grid harmonics, the system enables real-time power quality analysis and fault alarms. It also supports mobile access for remote monitoring and intelligent O&M management.
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