JPS54113056A - Control of number of phase advance capacitor - Google Patents

Control of number of phase advance capacitor

Info

Publication number
JPS54113056A
JPS54113056A JP1906578A JP1906578A JPS54113056A JP S54113056 A JPS54113056 A JP S54113056A JP 1906578 A JP1906578 A JP 1906578A JP 1906578 A JP1906578 A JP 1906578A JP S54113056 A JPS54113056 A JP S54113056A
Authority
JP
Japan
Prior art keywords
load
during
reactive power
control
phase advance
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
JP1906578A
Other languages
Japanese (ja)
Inventor
Masao Ishikawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1906578A priority Critical patent/JPS54113056A/en
Publication of JPS54113056A publication Critical patent/JPS54113056A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To control phase advance capacitor by making apparent reactive power greater by multiplying its changed amount by a constant when a lagging reactive power occurred at the time of load rapid increase.
CONSTITUTION: A change in reactive power which takes place according to the change in load M is detected and then the phase advance capacitors Co to Cn are closed through the controller CTR or interrupted to control power-factor. During at least load rapid increase period, an increased load(reactive power) during one control clock is multiplied by a constant and then the quotient is added to the present load to estimate load during the next control clock. When the excess from the limit value is greater, capacitors of more than two-unit capacity are increased or decreased during one control clock, whereby period during which lagging power- factor occurs can be suppressed to a minimum.
COPYRIGHT: (C)1979,JPO&Japio
JP1906578A 1978-02-23 1978-02-23 Control of number of phase advance capacitor Pending JPS54113056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1906578A JPS54113056A (en) 1978-02-23 1978-02-23 Control of number of phase advance capacitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1906578A JPS54113056A (en) 1978-02-23 1978-02-23 Control of number of phase advance capacitor

Publications (1)

Publication Number Publication Date
JPS54113056A true JPS54113056A (en) 1979-09-04

Family

ID=11989020

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1906578A Pending JPS54113056A (en) 1978-02-23 1978-02-23 Control of number of phase advance capacitor

Country Status (1)

Country Link
JP (1) JPS54113056A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5123648A (en) * 1974-08-22 1976-02-25 Fuji Electric Co Ltd
JPS5222137B2 (en) * 1973-04-04 1977-06-15

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5222137B2 (en) * 1973-04-04 1977-06-15
JPS5123648A (en) * 1974-08-22 1976-02-25 Fuji Electric Co Ltd

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