JPS5725014A - Control system of reactive power compensating device - Google Patents
Control system of reactive power compensating deviceInfo
- Publication number
- JPS5725014A JPS5725014A JP10035680A JP10035680A JPS5725014A JP S5725014 A JPS5725014 A JP S5725014A JP 10035680 A JP10035680 A JP 10035680A JP 10035680 A JP10035680 A JP 10035680A JP S5725014 A JPS5725014 A JP S5725014A
- Authority
- JP
- Japan
- Prior art keywords
- reactive power
- qfb2
- qfb1
- output
- compensating 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
PURPOSE:To apparently increase the capacity of a reactive power compensating device, by smoothing an output of the reactive power detector of a load, outputting it through limiting circuit, and controlling the reactive power cmpensating device. CONSTITUTION:A reactive power detector 21 is a detector which answers at a high speed, and detects the reactive power at every semicycle. Its output qF is a signal corresponding to magnitude of the reactive power which is generated by an arc furnace, and corresponds to a difference between a signal qC corresponding to magnitude of reactive power of a phase advance capacitor 4, and reactive power qL which is generated by a reactor 32 of a reactive power compensating device. In this case, an output qFB of a filtering circuit 211 is made to pass through a limiting circuit 212, and an output q'FB is outputted, but when an output of the circuit 211 is smaller than qFB1, q'FB becomes zero, a base portion qFB2-qFB1 is outputted as q'FB between qFB1-qFB2, and when it exceeds qFB2, a constant value of qFB2-qFB1 is outputted as q'FB. Accordingly, a value of qFB2-qFB1 is taken large within a range where a range where power-factor of a system does not become lower than its normal value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10035680A JPS5725014A (en) | 1980-07-22 | 1980-07-22 | Control system of reactive power compensating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10035680A JPS5725014A (en) | 1980-07-22 | 1980-07-22 | Control system of reactive power compensating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5725014A true JPS5725014A (en) | 1982-02-09 |
Family
ID=14271806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10035680A Pending JPS5725014A (en) | 1980-07-22 | 1980-07-22 | Control system of reactive power compensating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5725014A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0270234A (en) * | 1988-09-06 | 1990-03-09 | Toshiba Corp | Reactive power compensator |
| JP2011257894A (en) * | 2010-06-08 | 2011-12-22 | Fuji Electric Co Ltd | Control device for reactive power compensation device |
| KR20180065846A (en) | 2016-12-08 | 2018-06-18 | 도시바 미쓰비시덴키 산교시스템 가부시키가이샤 | Reactive power compensation device and control method thereof |
-
1980
- 1980-07-22 JP JP10035680A patent/JPS5725014A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0270234A (en) * | 1988-09-06 | 1990-03-09 | Toshiba Corp | Reactive power compensator |
| JP2011257894A (en) * | 2010-06-08 | 2011-12-22 | Fuji Electric Co Ltd | Control device for reactive power compensation device |
| KR20180065846A (en) | 2016-12-08 | 2018-06-18 | 도시바 미쓰비시덴키 산교시스템 가부시키가이샤 | Reactive power compensation device and control method thereof |
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