Analysis of Alternative. Background. Initial Cost. Maintenance Cost. Stand Alone?. Substations use dc supply systems to sustain control functions during periods of loss of the ac power system.
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*Note: To be determined a stand alone source, the source must be able to supply a continuous current for 8 hours immediately after power is lost. The source must also provide a high momentary current at the end of an 8 hour period.
These storage alternatives were also analyzed in combination with one another, or as “hybrid systems.”
Extra High Voltage Substation Back Up Storage Source
Block Diagram of System
Substation Battery Bank
Present Fault Tree
Bench Top Testing
Instructor: Joe Law