1100 MW半速汽轮发电机转子绕组电阻率对转子温度场的影响

Influence on the Rotor Temperature-field by the Resistivity of Rotor Windings in the 1100MW Semi-speed Turbine Generator

绕组阻值和电流是影响铜耗的主要因素,而温度又反过来影响阻值。通过阻值变化对温度场进行迭代计算,得出基于有限体积方法下的温度分布,并对迭代前后的转子铁心温度、绕组以及绕组内氢气温度分布进行对比研究,为后续更准确计算温度场给予理论指导。

stance value of windings were also influenced by the temperature. The iteration calculation by resistance variation against temperature-field was conducted to get temperature distribution based on the finite volume method, as well as the temperature of the rotor core, winding temperature and temperature distribution of hydrogen inside the windings were compared and studied, proving the theoretical guidance for the subsequent and more precise temperature-field calculation.