I did both. Both direct air cooling and indirect air cooling are based on water circulation cooling. Direct air cooling uses an air cooling island to utilize a large fan and the heat dissipation surface of the air cooling island. cooling. Yes, you can take a look at Suzhou Electric Field. Indirect air cooling is done by an intermediate cooling tower (similar in shape to a cooling water tower). There are intercooling triangles around the bottom of the intercooling tower. air convection inside and outside the intermediate cooling tower. You can take a look at the 660,000 units of the electric field in Qinling, Shaanxi.
The plant has a total installed capacity of 380,000 units and a total of 4 turbogenerators. Among themx, generators #1 and 2 are QF-75-2 hydrogen-cooled units. The generator voltage is 10.5KV and the double star connection is used. Generators 3 and 4 are QFS-125-2 dual water internal cooling units, and the generator voltage is 13.8 KV wye.
This power plant is a regional thermal power plant and adopts a generator-transformer unit wiring method. The 110KV system is an indoor power distribution device, and the main bus adopts a single busbar segmented branch wiring method; 330KV system is an outdoor power distribution device, using five-pointed star wiring method. The main transformers No. 1 and 2 have a capacity of 90,000 KVA and are cooled by forced air circulation of oil; main transformers No. 3 and No. 4 have a capacity of 150,000 KVA and are cooled by forced oil air circulation.The four main transformers. are all manufactured by Xi'an Transformer Electric Furnace Factory. The factory is far from Xi'an, so there are enough transportation vehicles. The fleet includes 11 buses, 3 Ivecos and 27 cars. The transport company has a 10T and 5T forklift; a 25T, 16T and 8T crane; 11 5T-10T tool trucks; an oil tanker and a fire truck;