JPS57196323A - Power-factor controlling system of overvoltage suppressing device for reactive power compensating power converter - Google Patents

Power-factor controlling system of overvoltage suppressing device for reactive power compensating power converter

Info

Publication number
JPS57196323A
JPS57196323A JP56080124A JP8012481A JPS57196323A JP S57196323 A JPS57196323 A JP S57196323A JP 56080124 A JP56080124 A JP 56080124A JP 8012481 A JP8012481 A JP 8012481A JP S57196323 A JPS57196323 A JP S57196323A
Authority
JP
Japan
Prior art keywords
power
factor
reactive
angle
suppressing device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56080124A
Other languages
Japanese (ja)
Inventor
Teruo Imura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji Electric Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP56080124A priority Critical patent/JPS57196323A/en
Publication of JPS57196323A publication Critical patent/JPS57196323A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/70—Regulating power factor; Regulating reactive current or power

Abstract

PURPOSE:To keep stably the power-factor of a power supply side at a certain level, by giving variable control to a reduction of the power-factor caused by the reactive power of an AC power supply in the direction where the control angle of a separate-exciting reverse converter within an overvoltage suppressing device is compensated. CONSTITUTION:A reactive power detector 7 calculates both the reactive power and active power from the voltage and current of an AC power supply system 1 and extracts a reactive factor sinpsi from above-mentioned reactive and active powers and through a component analyzer 8. The factor sinpsi is compared through a power-factor controller 9 with the command value sinpsi* which is set by a power-factor setter 10 with a certain force factor. Then the phase of a separate-exciting adverse converter 4 of an overvoltage suppressing device is controlled to secure a constant detected value. In other words, the detecting signal psi is set at a negative value in case the power-factor angle has a loss and set at a positive value in case the power-factor angle has a gain, respectively. As a result, the loss or gain of the angle psi is decreased to obtain a desired power-factor.
JP56080124A 1981-05-28 1981-05-28 Power-factor controlling system of overvoltage suppressing device for reactive power compensating power converter Pending JPS57196323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56080124A JPS57196323A (en) 1981-05-28 1981-05-28 Power-factor controlling system of overvoltage suppressing device for reactive power compensating power converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56080124A JPS57196323A (en) 1981-05-28 1981-05-28 Power-factor controlling system of overvoltage suppressing device for reactive power compensating power converter

Publications (1)

Publication Number Publication Date
JPS57196323A true JPS57196323A (en) 1982-12-02

Family

ID=13709454

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56080124A Pending JPS57196323A (en) 1981-05-28 1981-05-28 Power-factor controlling system of overvoltage suppressing device for reactive power compensating power converter

Country Status (1)

Country Link
JP (1) JPS57196323A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6045823A (en) * 1983-08-22 1985-03-12 Chubu Electric Power Co Inc Control system of static reactive power compensator
JPH0198011A (en) * 1987-10-12 1989-04-17 Aretsukusu Denshi Kogyo Kk Static reactive power controller
JPH0199117A (en) * 1987-10-12 1989-04-18 Aretsukusu Denshi Kogyo Kk Static type reactive power controller
JPH01310419A (en) * 1988-06-08 1989-12-14 Aretsukusu Denshi Kogyo Kk Reactive power control device for inductive load
CN104362650A (en) * 2014-11-14 2015-02-18 国家电网公司 Electric power system reactive power optimization method considering cost factor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6045823A (en) * 1983-08-22 1985-03-12 Chubu Electric Power Co Inc Control system of static reactive power compensator
JPH0376488B2 (en) * 1983-08-22 1991-12-05 Chubu Denryoku Kk
JPH0198011A (en) * 1987-10-12 1989-04-17 Aretsukusu Denshi Kogyo Kk Static reactive power controller
JPH0199117A (en) * 1987-10-12 1989-04-18 Aretsukusu Denshi Kogyo Kk Static type reactive power controller
JPH01310419A (en) * 1988-06-08 1989-12-14 Aretsukusu Denshi Kogyo Kk Reactive power control device for inductive load
CN104362650A (en) * 2014-11-14 2015-02-18 国家电网公司 Electric power system reactive power optimization method considering cost factor

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