Apparatus for controlling the reactive impedance of a transmission line
Patent
·
OSTI ID:5104658
This patent describes an apparatus for controlling the reactive impedance of a transmission line where capacitive reactance is inserted in series in the line to compensate inductive reactance includes a plurality of three or more capacitor modules connected to each other in series to form a series combination of capacitor modules. Each module is individually bypassed by fast acting thyristor bypass switches so that a central automatic control system can selectively place all of the modules in series where a maximum compensation level is achieved (meaning that the total reactive impedance is at a minimum level), or to provide a minimum change with just one capacitor module.
- Assignee:
- Electric Power Research Institute, Palo Alto, CA (USA)
- Patent Number(s):
- A; US 4999565
- Application Number:
- PPN: US 7-459991
- OSTI ID:
- 5104658
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
24 POWER TRANSMISSION AND DISTRIBUTION
240201* -- Power System Networks
Transmission & Distribution-- AC Systems-- (1990-)
240300 -- Power Transmission Lines & Cables-- (1990-)
AUTOMATION
CAPACITORS
CONTROL SYSTEMS
ELECTRIC IMPEDANCE
ELECTRICAL EQUIPMENT
EQUIPMENT
IMPEDANCE
ON-LINE CONTROL SYSTEMS
ON-LINE SYSTEMS
POWER TRANSMISSION LINES
VAR CONTROL SYSTEMS
240201* -- Power System Networks
Transmission & Distribution-- AC Systems-- (1990-)
240300 -- Power Transmission Lines & Cables-- (1990-)
AUTOMATION
CAPACITORS
CONTROL SYSTEMS
ELECTRIC IMPEDANCE
ELECTRICAL EQUIPMENT
EQUIPMENT
IMPEDANCE
ON-LINE CONTROL SYSTEMS
ON-LINE SYSTEMS
POWER TRANSMISSION LINES
VAR CONTROL SYSTEMS