JPS5473252A - System of compensating voltage fluctuation - Google Patents

System of compensating voltage fluctuation

Info

Publication number
JPS5473252A
JPS5473252A JP14134077A JP14134077A JPS5473252A JP S5473252 A JPS5473252 A JP S5473252A JP 14134077 A JP14134077 A JP 14134077A JP 14134077 A JP14134077 A JP 14134077A JP S5473252 A JPS5473252 A JP S5473252A
Authority
JP
Japan
Prior art keywords
reactive power
compensating
interphase
fluctuation
ideal
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.)
Granted
Application number
JP14134077A
Other languages
Japanese (ja)
Other versions
JPS6030966B2 (en
Inventor
Muneyuki Udo
Yotaro Miyazaki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP52141340A priority Critical patent/JPS6030966B2/en
Publication of JPS5473252A publication Critical patent/JPS5473252A/en
Publication of JPS6030966B2 publication Critical patent/JPS6030966B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE: To reduce detecting delay to sudden fluctuation and transient errors as much as possible, by accurately detecting quantity necessary for compensation by interphase voltage and current when compensating reactive power.
CONSTITUTION: A reactive power compensating device 3 is connected among each phase in parallel with an unbalanced load 2 fluctuating as an arc furnace, and the reactive power compensating device is controlled in response to the fluctuation of the load, thus compensating voltage fluctuation. Ideal reactive power QRS, QST, QTR obtained by applying phase current and phase voltage at the load side to an ideal interphase reactive power detector 10 are gained on the assumption that interphase reactive power, which becomes an object in an interphase reactive power converter 11, is proportioned to the quantity obtained by subtracting ideal interphase reactive power between remainder two phase from quintuple as much as ideal reactive power among corresponding phases. Compensating reactive power corresponding to these power are controlled so that the compensating reactive power be fed among each through a control circuit 5, thus compensating voltage fluctuation based on the fluctuation of the load.
COPYRIGHT: (C)1979,JPO&Japio
JP52141340A 1977-11-25 1977-11-25 Voltage fluctuation compensation method Expired JPS6030966B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52141340A JPS6030966B2 (en) 1977-11-25 1977-11-25 Voltage fluctuation compensation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52141340A JPS6030966B2 (en) 1977-11-25 1977-11-25 Voltage fluctuation compensation method

Publications (2)

Publication Number Publication Date
JPS5473252A true JPS5473252A (en) 1979-06-12
JPS6030966B2 JPS6030966B2 (en) 1985-07-19

Family

ID=15289671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52141340A Expired JPS6030966B2 (en) 1977-11-25 1977-11-25 Voltage fluctuation compensation method

Country Status (1)

Country Link
JP (1) JPS6030966B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0225668A (en) * 1988-07-15 1990-01-29 Fujikura Ltd Compression refrigerator

Also Published As

Publication number Publication date
JPS6030966B2 (en) 1985-07-19

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