KR850000683A - 가변주파수 전력계통의 전압검출 장치 - Google Patents
가변주파수 전력계통의 전압검출 장치 Download PDFInfo
- Publication number
- KR850000683A KR850000683A KR1019840001778A KR840001778A KR850000683A KR 850000683 A KR850000683 A KR 850000683A KR 1019840001778 A KR1019840001778 A KR 1019840001778A KR 840001778 A KR840001778 A KR 840001778A KR 850000683 A KR850000683 A KR 850000683A
- Authority
- KR
- South Korea
- Prior art keywords
- voltage
- detector
- power system
- phase
- variable frequency
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/09—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption
Landscapes
- Protection Of Generators And Motors (AREA)
- Emergency Protection Circuit Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
Abstract
Description
Claims (4)
- 가변 주파수 전력계통의 상간 또는 상전압에 상응하는 신호를 출력하는 전압검출장치, 상기 전력계통의 계통주파수에 상응하는 신호를 출력하는 주파수검출장치, 이 주파수검출장치 및 상기 전압검출장치의 출력을 받아서 전압/주파수비를 연산하는 나눗셈기, 이 나눗셈기의 출력과 미리 정하여진 소정치와를 비교하는 전압판정기를 구비하는 것을 특징으로 하는 가변주파수 전력계통의 전압검출장치.
- 계통의 상간(또는 상) 전압이 검출입력으로 유도되는 보호계전기와 계통의 주파수에 비례하는 물리량을 검출하는 물리량검출기를 구비하고, 상기 물리량검출기의 출력이 상기 보호계전기의 정정치 입력으로서 이 보호계전기에 주어지는 것을 특징으로 하는 가변주파수 전력계통의 전압검출장치.
- 청구범위 제1항에 있어서, 물리량검출기가, 계통에 접속되는 교류전동기에 축결된 파이롯트발전기로된 것을 특징으로 하는 가변주파수 전력계통의 전압검출장치.
- 청구범위 제1항에 있어서, 물리량검출기가, 계통의 상간(또는 상)전압을 검출하는 전압검출기로 되는 것을 특징으로 한 가변주파수 전력계통의 전압검출장치.※ 참고사항:최초출원 내용에 의하여 공개하는 것임.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019890006565U KR890004758Y1 (ko) | 1983-06-30 | 1989-05-19 | 가변주파수 전력계통의 정압검출장치 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP???58-120810 | 1983-06-30 | ||
JP12081183A JPS6013423A (ja) | 1983-06-30 | 1983-06-30 | 可変周波数電力系統の電圧検出装置 |
JP58-120811 | 1983-06-30 | ||
JP12081083A JPS6013422A (ja) | 1983-06-30 | 1983-06-30 | 可変周波数電力系統の電圧検出装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019890006565U Division KR890004758Y1 (ko) | 1983-06-30 | 1989-05-19 | 가변주파수 전력계통의 정압검출장치 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR850000683A true KR850000683A (ko) | 1985-02-28 |
Family
ID=26458328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019840001778A KR850000683A (ko) | 1983-06-30 | 1984-04-04 | 가변주파수 전력계통의 전압검출 장치 |
Country Status (4)
Country | Link |
---|---|
EP (3) | EP0264971B1 (ko) |
KR (1) | KR850000683A (ko) |
CA (1) | CA1249338A (ko) |
DE (2) | DE3484351D1 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2032912C (en) * | 1990-12-21 | 1994-06-28 | Bryan M. Latta | Nonintrusive gas-level measurement apparatus |
EP1819021B1 (en) * | 2006-02-14 | 2018-06-20 | Finder S.P.A. | Method and device for monitoring polyphase lines and for detecting phase losses based on the phase angle between phase-to-phase voltages |
CN113765411A (zh) * | 2020-06-05 | 2021-12-07 | 产晶积体电路股份有限公司 | 变频电源控制器 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3546534A (en) * | 1968-01-31 | 1970-12-08 | Gen Electric | Overexcitation relay |
JPS52120317A (en) * | 1976-04-02 | 1977-10-08 | Hitachi Ltd | Field overvoltage protector for synchronous machine |
SE416757B (sv) * | 1979-04-24 | 1981-02-02 | Asea Ab | Anordning anslutning till ett vexelstromsnet for att avkenna spenning i detta och att ge ett utgangsverde som er proportionellt med forhallandet mellan netets linjespenning och frekvens |
DE3237800C2 (de) * | 1982-08-03 | 1986-09-11 | Loher Gmbh, 8399 Ruhstorf | Schutzeinrichtung für Asynchron-Motoren |
-
1984
- 1984-04-04 KR KR1019840001778A patent/KR850000683A/ko not_active Application Discontinuation
- 1984-06-27 DE DE8787117882T patent/DE3484351D1/de not_active Expired - Lifetime
- 1984-06-27 EP EP19870117882 patent/EP0264971B1/en not_active Expired
- 1984-06-27 EP EP84107379A patent/EP0130547B1/en not_active Expired
- 1984-06-27 EP EP19870117881 patent/EP0271777B1/en not_active Expired
- 1984-06-27 DE DE8787117881T patent/DE3484352D1/de not_active Expired - Lifetime
- 1984-06-28 CA CA000457638A patent/CA1249338A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0264971A3 (en) | 1988-08-03 |
CA1249338A (en) | 1989-01-24 |
EP0271777A2 (en) | 1988-06-22 |
EP0271777B1 (en) | 1991-03-27 |
EP0264971B1 (en) | 1991-03-27 |
EP0271777A3 (en) | 1988-07-06 |
EP0130547B1 (en) | 1989-09-20 |
DE3484351D1 (de) | 1991-05-02 |
DE3484352D1 (de) | 1991-05-02 |
EP0264971A2 (en) | 1988-04-27 |
EP0130547A1 (en) | 1985-01-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19840404 |
|
PG1501 | Laying open of application | ||
E902 | Notification of reason for refusal | ||
PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 19890131 Patent event code: PE09021S01D |
|
E601 | Decision to refuse application | ||
PE0601 | Decision on rejection of patent |
Patent event date: 19890427 Comment text: Decision to Refuse Application Patent event code: PE06012S01D Patent event date: 19890131 Comment text: Notification of reason for refusal Patent event code: PE06011S01I |
|
PC1205 | Withdrawal of application forming a basis of a converted application | ||
WICV | Withdrawal of application forming a basis of a converted application |