Electricity: power supply or regulation systems – For reactive power control – Using impedance
Patent
1993-06-23
1997-04-15
Gaffin, Jeffrey A.
Electricity: power supply or regulation systems
For reactive power control
Using impedance
307102, G05F 100
Patent
active
056213050
ABSTRACT:
An overload management system is provided, including a method and an apparatus, for controlling the operation of electrical equipment in a short-term overload region above the equipment's continuous capability operation curve, without suffering significant loss of equipment life. This overload management system is particularly beneficial for use with equipment having load management capability, such as a modular thyristor controlled series capacitor (TCSC) system using phase controlled firing based on monitored capacitor voltage and line current. For vernier operation, the system predicts an upcoming firing angle for switching a switching device to govern the current received by the electrical device, such as to bypass line current around a series capacitor of the TCSC system. The overload management system may serve as one of several higher-level controllers providing input to a vernier controller for accommodating competing objectives of various system demands.
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Clark Kara
Hooker J. Kenneth
Larsen Einar V.
Piwko Richard J.
Wegner Carl A.
Electric Power Research Institute Inc.
Gaffin Jeffrey A.
Ganjoo Peter
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