Normally the test results of a piece of equipment are compared with its previous tests and also with test results of similar equipment. Would it make sense to compare it with the same kind of equipment but with different specifications?
For example if we have a 10 MW, 13.8 kV, insulation class...
We have a 3.6 MW Hydro Electric Power Generator. The unit was shut down for a couple of days and when we attempted to start it, it won't develop voltage. We found that one of the generator PT High Tension side fuses was sort of blown. I said sort of because it’s damaged in the center. I think if...
I need some good links explaining the working of Thermo Electric Generators (in which a bi metal junction is heated to generate electricity).
I would appreciant all help.
Thanks
We have two hydroelectric generators of 100 MW each. Unit 2 has more wear of carbon brushes on the slip ring than unit 1. Under the same operating conditions (load, field volts, field amps) the temperature of the slip ring of unit 2 is 25 C higher than unit 1. The brushes are of the same make...
We have five horizontal, 3.3 MW each, air-cooled hydroelectric generators. Generator 2 has started to trip on high stator winding temperature, while running at full load. Its worth mentioning that this generator was rewound (not by the original manufacturer) a couple of years because its was...
We have two hydroelectric generators, 80 MW each. It has been noted that the generator noise changes when the generator feeds its own station service transformer. This could be due to harmonics. The only sources of harmonics I can think of are due to the bridges in the excitation system and the...
We have two hydroelectric generators, 80 MW each. It has been noted that the generator noise changes when the generator feeds its own station service transformer. This could be due to harmonics. The only sources of harmonics I can think of are due to the bridges in the excitation system and the...
IEEE standard 43-2000 states that in order to avoid the effects of temperature in trend analysis, all tests should be corrected to a common base temperature of 40 degrees C using the following equation:
Rc = Kt * Rt
Where:
Rc is the insulation resistance corrected to 40 C
Kt is the insulation...
We operate a power plant having 5 hydroelectric generators. Over the past 6 years we have been carrying out the following tests, in addition to several others, on these units:
1- Insulation resistance of stator with power cables connected.
2- Insulation resistance of stator with out power...
I need info on how to start and manage micro hydropower projects right from feasibility studies to installation and commissioning. Basically we are interested in offering turnkey projects to various prospective clients. So I would appreciate the input from the members of the forum, which would...
