This series of Forced Oil Circulation Cooling Transformer adopts ultra-low loss grain-oriented silicon steel cores and high-purity oxygen-free copper windings, with a high-strength insulation system for high-voltage and large-capacity operation and extremely low partial discharge. Equipped with professional cooling oil pumps and forced heat exchangers, it accelerates the full-cycle flow of insulating oil mechanically to quickly dissipate concentrated heat from cores and windings, solving the heat accumulation problem of ultra-large capacity equipment. Integrated with intelligent oil flow monitoring, temperature control linkage, pressure protection and overload early warning systems, it adapts to 24-hour full-load continuous operation and severe grid fluctuating conditions. Featuring stable insulation and excellent thermal decay resistance, it is customized for large-scale power hubs, new energy centralized grid connection and super-large industrial clusters.
Core Parameters
|
Parameter |
Value |
|
Cooling Method |
OFAF/ODAF Forced Oil Circulation & Forced Air Cooling |
|
Rated Voltage Level |
35kV, 110kV, 220kV High Voltage Grade |
|
Rated Capacity Range |
10000kVA～200000kVA Ultra-large Capacity |
|
Winding Temperature Rise Limit |
≤60K |
|
Oil Temperature Rise Limit |
≤50K |
|
Short Circuit Impedance |
8%～14% (National high-voltage grid standard) |
|
Voltage Regulation Mode |
On-load / Off-circuit tap changer optional |
|
Insulation Class |
Class A enhanced high-voltage insulation |
|
Operation Mode |
24-hour uninterrupted full-load operation |
|
Design Service Life |
≥30 years |
Product Applications
High-Voltage Main Grid Hub: Applied in 110kV/220kV municipal and provincial main substations for ultra-large capacity power transfer, voltage regulation and regional power distribution.
Large-Scale New Energy Base: Suitable for million-kilowatt photovoltaic and wind power stations, adapting to fluctuating and impact loads of centralized new energy grid connection and solving overheating problems under peak power generation.
Super-Large Industrial Cluster: Serving metallurgy, petrochemical and advanced manufacturing industrial bases, meeting 24-hour uninterrupted ultra-high power consumption demands.
National Key Infrastructure: Supporting power supply for water conservancy hubs, rail transit, airport ports and large data center clusters with high-reliability uninterrupted power guarantee.
Regional Grid Capacity Expansion: Used for upgrading urban core power grids, replacing traditional capacity-limited transformers to break regional power supply bottlenecks.
Energy Storage Station Matching: Supporting step-up transformation for centralized energy storage power stations, adapting to frequent charge-discharge and rapid load fluctuation working conditions.
FAQ
Q: What are the core differences between Forced Oil Circulation Cooling Transformer and ONAF transformer?
A: ONAF adopts natural oil circulation with limited heat dissipation capacity, only suitable for conventional medium and large loads. Forced oil circulation transformers rely on oil pumps to accelerate oil flow circulation, with several times higher heat exchange efficiency. They support ultra-large capacity and long-term extreme load operation, exclusively used for high-voltage main grids and large energy hub scenarios.
Q: What is the biggest advantage of this Forced Oil Circulation Cooling Transformer?
A: It features ultra-large capacity bearing, precise temperature control and no performance attenuation under continuous heavy load. It solves the pain points of traditional transformers such as heat accumulation, high temperature rise and large thermal loss under ultra-large capacity working conditions.
Q: Is the maintenance difficulty higher than ordinary oil transformers?
A: It requires regular inspection of oil pump operation, oil flow pressure and pipeline smoothness. With standardized intelligent monitoring and early warning system, it can operate stably for more than 30 years under standardized maintenance with high overall reliability.
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