Abstract:

The heat loss characteristics and steam distribution optimization experiment of 1 030 MW turbine manufactured by Harbin Steam Turbine Co., Ltd. are introduced, including steam distribution optimization scheme and its effect. Through the turbine test with condition variation, the results show that hybrid sliding-pressure operation is more beneficial to improve the efficiency of HP cylinder and reduce the power consumption of feedwater pump than fixed pressure operation, but the cycle efficiency will decrease with the decrease of new steam pressure. Therefore, there is a certain space-optimized in the parameters of hybrid sliding-pressure operation. This optimization design could provide references for the design of similar units.

Key words: 1 000 MW units, steam turbine, hybrid sliding-pressure operation, steam distribution test