葛洲坝二江水电站发电机增容改造可行性研究

Study on the feasibility of capacity increasing transformation for Gezhouba Erjiang Hydropower station generators

为研究葛洲坝二江水电站发电机增容改造的可行性,应用网络法和温度场的计算方法详细分析了机组的通风及定子温升情况,并在现场对5号机进行了通风实验,收集了运行数据。经对比,总风量和线棒温升的计算值与通风实验值和线棒温升折算值比较吻合,线棒温升在安全范围内,该机组可以增容。

In order to study the feasibility of capacity increasing transformation for Gezhouba Erjiang Hydropower station generators,this paper utilizes the network method and the temperature field calculation method to analyze ventilation and temperature increase of stators. Through the on - site ventilation experiment on No. 5 unit, the operation data is acquired. By comparison, the total air volume and the calculated winding bar temperature increase relatively coincide with the experimental ventilation value and the conversed winding bar temperature increase, which is within safe range. The unit is feasible in capacity increase.