Nickel cadmium (Ni-Cd) battery for gas turbine powerplant

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Gas Turbine Starting and Control

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Ni-Cd in gas-turbine power generation application

Gas turbine power plants typically have requirements for DC power for several different functions that must be supplied regardless of availability of normal site power.

These include:

	Start-up power which typically requires several cycles of high starting currents each lasting 60 seconds or more ( large turbine sets typically use other than electric start systems)
	Power for lubricating pumps which run for 20 - 30 minutes after turbine shut-down
	Control power for electronic systems which monitor and control the entire installation
	Alarm and fire protection systems
	Air conditioning for critical systems

Due to the critical nature of each of these functions, each requirement is served by a single dedicated battery, having an end voltage dictated by the parameters of that particular load. Mixed load battery sizing worksheet

	KFX	KFH	KBH KPH	KSH	KBM KPM	KFM	KSH	KBL KPL	KFL
Starting duty 1 to 3 minutes	X	X	X	X
Lube pumps - emergency 20-30 min.					X	X	X
Control power 1-3 hours					X	X	X
Control power > 3 hours								X	X
Alarm and fire protection 1- 3 hours					X	X	X
Alarm and fire protection > 3 hours								X	X
Air conditioning < 1 hour	X	X	X	X
Air conditioning > 1 hour					X	X