First of all, you need to check whether this is caused by the generator itself, for example: insufficient turbine power, overheated generator bearings, insufficient technical water supply or blocked technical water supply. Again, check if this is due to the operating mode, such as phase leading operation, phase modulation operation, output limiting, etc. Third, check if this is due to system planning that limits generator power. Of course, the operating point of the generator does not necessarily operate under the rated working conditions. Sometimes it operates above rated working conditions, and sometimes below rated working conditions. These are very normal and specific problems that require detail. analysis.
The function of the vertical guide bearing of the turbine generator is to bear the unbalanced forcereleased radial mechanical and electromagnetic unbalanced force of the rotating part of the unit, so that the axis of the unit oscillates within the specified value range.
The main signs of a guide bearing with good performance are:
(1) Sufficient working oil film thickness can be formed;
(2) The tile temperature should be within the allowable range, generally around 50°C;
(3) The circulating oil circuit is smooth and the cooling effect is good;
(4) The oil level in the oil tank and the bearing clearance meet the design requirements;
(5) The sealing structure is reasonable and does not shed oil
(6) The structure is simple; and easy to install and repair.