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Oil-immersed transformers are core equipment in power systems, relying on transformer oil for insulation and heat dissipation. They are particularly suited for high-capacity, high-voltage applications such as urban substations or industrial power supply. Their core structure includes critical components like the core, windings, tank, oil conservator, and gas relay.
Core Features
Cooling and Insulation: Transformer oil serves dual functions of heat dissipation and insulation. During operation, the top layer oil temperature typically does not exceed 85°C, with a short-term maximum of 90°C.
Cooling Methods: Common approaches include natural cooling, forced air cooling, and forced oil circulation.
Advantages: Excellent insulation properties, high heat dissipation efficiency, low cost, and minimal operational noise.
Disadvantages: Oil is flammable, necessitating strict fire and explosion prevention measures, and poses potential environmental impacts.
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