DAVID L BASSETT
Engineers in Macungie, PA
License number
Pennsylvania PE026449E
Category
Engineers
Type
Professional Engineer
Address
Address
Macungie, PA 18062
Professional information
Control System And Method For The Parallel Operation Of Voltage Regulators
US Patent:
5498954, Mar 12, 1996
Filed:
Sep 7, 1994
Appl. No.:
8/301477
Inventors:
David L. Bassett - Macungie PA
Dan E. Weatherly - Whitehall PA
Dan E. Weatherly - Whitehall PA
Assignee:
Pennsylvania Power & Light Company - Allentown PA
International Classification:
G05F 114
US Classification:
323340
Abstract:
The invention is a system and method for changing the tap position of transformers, where two or more of the transformers are operating in parallel, based on the measured low side bus voltage and low side MVAR flow. A programmable logic controller (PLC) calculates the average low side bus voltage for the transformers operating in parallel. The PLC also calculates a feedback voltage for each transformer as a function of circulating MVAR flow for each transformer operating in parallel based on concept of preventing the tap position of a transformer from exceeding a certain relative difference compared to other transformers.