Page 26 - Power Quality in Electrical Systems
P. 26
1997 IEEE, reprinted with permission]
Application Relative cost of device of device Device used in conjunction with an alternate electrical supply. $300/kVA Depending on the speed and quality of the transfer, this switch can be used in cases of interruptions, sags, swells, and long duration overvoltages and undervoltages. $260 – $500/kV
The Relative Cost of Mitigating Voltage Disturbances [1.2] [©
(Medium and high voltage) are used in cases of interruptions. DC current. Utilized for interruptions, and sags. which isolates output power from incoming source. and thus ride through a voltage sag. transients. in cases of impulsive transients. Device used where harmonics may be present.
Mitigating device Uninterruptible Power Storage Device (SSD) Motor-Generator (MG) Contactor Ride-through Ferroresonant (CVT) K-Factor Transformers
1.1 Solid State Transfer Standby Generator Supply (UPS) Superconducting Reduced Voltage Transformers Surge Protective Devices (SPD) Shielded Isolation Transformers Line Reactors Harmonic Filters Fiberoptes Cable Optical Isolators Noise Filters
TABLE Switch Sets Starters Devices
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