JPS6469214A - System protective device - Google Patents
System protective deviceInfo
- Publication number
- JPS6469214A JPS6469214A JP62225399A JP22539987A JPS6469214A JP S6469214 A JPS6469214 A JP S6469214A JP 62225399 A JP62225399 A JP 62225399A JP 22539987 A JP22539987 A JP 22539987A JP S6469214 A JPS6469214 A JP S6469214A
- Authority
- JP
- Japan
- Prior art keywords
- set value
- established
- condition
- voltage
- time
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE:To permit stabilized power supply even upon a peak time in summer, by a method wherein a load intercepting command is outputted when a condition that a voltage is reduced to a value lower than a set value and the increasing rate of a reactive power is higher than a set value is continued for a time longer than a predetermined time. CONSTITUTION:A first condition 1, established when the value of a system voltage V is higher than a set value K1, and a second condition 2, established when the increasing rate (Q/Q0) of a delayed reactive power Q in a system is a set value K2, are provided. These two conditions are connected to an AND circuit 3 and when AND conditions are established while being continued longer than a set time T1 in a timer circuit 4, an intercepting command is outputted to a specified load in the system in this chance. According to this method, stabilized power supply may be effected even when a characteristic, in which the reactive power Q is increased in accordance with the reduction of a voltage upon such as the peak of demand in summer, is generated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62225399A JPS6469214A (en) | 1987-09-10 | 1987-09-10 | System protective device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62225399A JPS6469214A (en) | 1987-09-10 | 1987-09-10 | System protective device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6469214A true JPS6469214A (en) | 1989-03-15 |
Family
ID=16828753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62225399A Pending JPS6469214A (en) | 1987-09-10 | 1987-09-10 | System protective device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6469214A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012090349A1 (en) | 2010-12-27 | 2012-07-05 | 株式会社ジェイアイエヌ | Eyewear |
-
1987
- 1987-09-10 JP JP62225399A patent/JPS6469214A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012090349A1 (en) | 2010-12-27 | 2012-07-05 | 株式会社ジェイアイエヌ | Eyewear |
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