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US 5,293,110 AGranted
Bridge capacitor bank installation
AssigneeAmerican Electric Power Service Corporation
InventorRadu G. Andrei
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AssigneeAmerican Electric Power Service Corporation
InventorRadu G. Andrei
Estimating the term…
A capacitor bank installation for generating reactive power in high or extra high voltage electrical power systems, for example 345kV, to maintain the voltage level during heavy loading conditions or system contingencies. A three phase capacitor bank is connected between the high voltage line and the low voltage line by a first switching device which is connected between the high voltage line and the capacitor bank and by a second switching device which is connected between the capacitor bank and the low voltage line. The first switching device is a current interrupting device in series with a motorized disconnect switch which has a lower recovery voltage withstand capability than would be required if switching a shunt capacitor bank connected to the high voltage system. The second switching device is a motorized disconnect switch without any current interrupting capability.
An electrical power system comprising a three phase high voltage system and a three phase low voltage system in phase with the high voltage system, and a three phase capacitor bank connected between the high and low voltage systems for generating reactive power and for transferring said reactive power only from the low voltage system into the high voltage system.
An electrical power system comprising a three phase high voltage system and a three phase low voltage system in phase with the high voltage system, and a high voltage ungrounded wye shunt capacitor bank connected in two points to the high voltage and low voltage systems through two switching devices which when operated have less recovery voltage than a switching device required to switch the same high voltage ungrounded wye capacitor bank in one stage.
Dependencies are inferred from the claim text.