In terms of environmental problems and power generation costs, an increase of the capacity
of indirect hydrogen-cooled turbine generators with high efficiency and good maintainability are
required. Mitsubishi Hitachi Power Systems Co., Ltd. (MHPS) developed High Heat
Transmission®, which improves the heat transmission rate of the stator coil insulation by
approximately three times higher compared to conventional one produced with existing technology,
and the feasibility of a 900 MVA class indirect hydrogen-cooled turbine generator, the basic design
of which has been completed by actual equipment verification using a 600 MVA class generator,
was confirmed. High Heat Transmission® can be applied not only to new generators, but also to
existing generators, and it can be expected to contribute to an increase of output and the resolution
of problems with generators experiencing overheating of stator coils. We are also promoting the
application of newly developed technologies to the generator service field, such as inspection and
monitoring technologies of generators.
