JPS6469214A - System protective device - Google Patents

System protective device

Info

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
Application number
JP62225399A
Other languages
Japanese (ja)
Inventor
Ryoichi Tsukui
Kaoru Koyanagi
Yoichi Kamimura
Kazuya Komata
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
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 filed Critical Toshiba Corp
Priority to JP62225399A priority Critical patent/JPS6469214A/en
Publication of JPS6469214A publication Critical patent/JPS6469214A/en
Pending legal-status Critical Current

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.
JP62225399A 1987-09-10 1987-09-10 System protective device Pending JPS6469214A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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