Research on Temperature Rise of the Large-Capacity Air-Cooled Synchronous Condenser

An improved end structure topology to reduce temperature rise (TR) of the large-capacity synchronous condenser (LSC) is proposed. Taking a 300MVar LSC as an example, the eddy current losses (ECL) in the end structures in the traditional model and improved model under rated operating conditions are analyzed. A 3-D flow-heat coupling calculation model of the LSC is established to examine the fluid dynamics and temperature distribution in the end region. The impact of the proposed structures on TR is explored, revealing a reduction in the maximum temperature of the press plate by 2.7 °C, and decreases in the near-core and far-core support fingers by 0.7 °C and 2.9 °C, respectively. Finally, the simulation results are validated through experimental testing.