Page 535 - Industrial Power Engineering and Applications Handbook

Captive (emergency) power generation 161509

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Figure 16.10 (Contd)

different operating conditions. We briefly discuss below transformer (GT), the protection of which is almost of a
a typical protection scheme that is generally adopted at standard nature.
a power station for the protection of The protection of the remaining system is a matter of
system design and appropriate application of the protective
The generator devices available depending upon system requirements.
The power station's auxiliary supply system and These three items have been taken out of the scheme of
The generator supply system to the switchyard. Figure 13.21 and redrawn in Figure 16.14 for more clarity.

See Figure 13.21 showing a general power generation Normal alarm schemes generally provided
and transmission system. For brevity we hae restricted (i) Stator cooling water
our discussion to the protection of the main equipment - Inlet temperature high
at the generating station such as the generator (G), the - Outlet temperature high
unit auxiliary transformers (UATs) and the generator - Rectifier temperature high