JPS5473252A - System of compensating voltage fluctuation - Google Patents
System of compensating voltage fluctuationInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0225668A (en) * | 1988-07-15 | 1990-01-29 | Fujikura Ltd | Compression refrigerator |
-
1977
- 1977-11-25 JP JP52141340A patent/JPS6030966B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6030966B2 (en) | 1985-07-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5534853A (en) | Controller of electric power converter | |
JPS5473252A (en) | System of compensating voltage fluctuation | |
JPS53123859A (en) | Control system for reactive power compensator | |
JPS54141307A (en) | Control unit for induction melting furnace | |
JPS5533260A (en) | Control system for reactive-power compensator | |
DE3266573D1 (en) | Device for the correction of the alternating voltage supplied by a frequency converter feeding an asynchronous or synchronous motor | |
JPS562016A (en) | Load-change compensating circuit | |
JPS56117576A (en) | Compensating circuit for phase difference of power converter | |
JPS55144777A (en) | Thyristor power control system | |
JPS5450860A (en) | Reactive power compensator controller | |
SU964853A1 (en) | Device for symmetrization of asymmetric three-phase load | |
JPS5385468A (en) | Polyphase power detector | |
JPS5366550A (en) | Control circuit for reactive power compensator | |
JPS55153675A (en) | Phase control system direct current constant voltage arc welding electric power source | |
JPS645329A (en) | Control method for reactive power compensator | |
JPS5543920A (en) | Controller of alternating current motor | |
JPS5668810A (en) | Constant voltage power source | |
JPS5644382A (en) | Controlling method of reactive power compensating type cyclo converter | |
JPS5458811A (en) | Automatic power factor regulator for self-exciting ac generator | |
JPS54122840A (en) | Control system for ganged system | |
JPS54102559A (en) | Unbalanced load compensating control apparatus | |
JPS5374877A (en) | Phase ontrol circuit | |
JPS5457136A (en) | Harmonic suppressor system for dc transmission system | |
JPS54153216A (en) | Control device of synchronous induction motor | |
JPS56158958A (en) | Electric power measurement device |