GAS TURBINE POWER GENERATION FACILITY

摘要

A planetary gear speed reducer (10) is installed between a gas turbine (1) and a generator (5). The planetary gear speed reducer has an elastic deformation means (12) on its output side, the elastic deformation means having its strain energy within elastic limit set so that it is greater than the variation torque energy of the generator at the time of instantaneous voltage drop. The elastic deformation means (12) comprises an elastic member that elastically connects the output shaft (10a) and outer ring (10b) of the planetary gear speed reducer. Therefore, when a short-time excessive torque is produced in the generator due to instantaneous voltage drop, power failure or the like, it is possible to maintain the operation of the generation facility and secure the power source of the important load and to reduce the installation length to make the apparatus compact.