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Patent Searching and Data


Title:
CONTROLLER WHICH ADJUSTS REACTIVE POWER
Document Type and Number:
Japanese Patent JP2008271626
Kind Code:
A
Abstract:

To save cost born by consumers to the restriction of power factor and V10 required when receiving electric power from an electric power system.

In a reactive power adjusting system 100, a substation 1 is connected to a generator G via a transmission line 2 and connected to consumer loads L via distribution lines 3. The substation 1 is provided with a transformer 4, a controller 5, a voltmeter 6, a reactive power meter 7, a circuit breaker 8, and a var compensator 10. The circuit breaker 8 and a capacitor 9 are installed near the consumer loads L. The controller 5 determines whether the reactive power needs to be adjusted or not from the measured data of the voltmeter 6 and the reactive power meter 7 and instructs the circuit breaker 8 to close the circuit when necessary. The circuit breaker 8 connects a capacitor 9 or the var compensator 10 to the distribution lines 3 by closing the circuit in accordance with the instruction from the controller 5. The capacitor 9 is a power capacitor, which is cost effective and easy to maintain. The var compensator 10 is a static var compensator, which is capable of adjusting the reactive power continuously but expensive.


Inventors:
TAKEUCHI YASUNORI
MAKI KAZUNARI
Application Number:
JP2007107413A
Publication Date:
November 06, 2008
Filing Date:
April 16, 2007
Export Citation:
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Assignee:
CHUGOKU ELECTRIC POWER
International Classes:
H02J3/18; G05F1/70
Domestic Patent References:
JPH05303437A1993-11-16
JP2001145265A2001-05-25
JP2000050501A2000-02-18
JP2005269744A2005-09-29
JP2002300726A2002-10-11
Attorney, Agent or Firm:
Isshiki International Patent Service Corporation