JPS6469216A - System protective device - Google Patents

System protective device

Info

Publication number
JPS6469216A
JPS6469216A JP62225401A JP22540187A JPS6469216A JP S6469216 A JPS6469216 A JP S6469216A JP 62225401 A JP62225401 A JP 62225401A JP 22540187 A JP22540187 A JP 22540187A JP S6469216 A JPS6469216 A JP S6469216A
Authority
JP
Japan
Prior art keywords
time
set value
established
voltage
condition
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
JP62225401A
Other languages
Japanese (ja)
Inventor
Kazuya Komata
Kaoru Koyanagi
Yoichi Kamimura
Ryoichi Tsukui
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 JP62225401A priority Critical patent/JPS6469216A/en
Publication of JPS6469216A publication Critical patent/JPS6469216A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE:To permit stabilized power supply even upon a peak in summer and the like, 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 changing rate of the voltage is lower than a set value is continued fo. a time longer than a predetermined period of time. CONSTITUTION:A first condition 1, established when the value of a system voltage V is lower than a set value K1, and a second condition 2, established when the changing rate in time (dV/dt) of the system voltage is lower than a set value k2, are provided. These two conditions are connected to an AND circuit 3 and when these AND conditions are established while being continued for a time longer than a set time T1, set in a timer element 4, an intercepting command is outputted to a specified load in the system in this chance. According to this method, power may be supplied stably even upon a peak in summer and the like.
JP62225401A 1987-09-10 1987-09-10 System protective device Pending JPS6469216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62225401A JPS6469216A (en) 1987-09-10 1987-09-10 System protective device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62225401A JPS6469216A (en) 1987-09-10 1987-09-10 System protective device

Publications (1)

Publication Number Publication Date
JPS6469216A true JPS6469216A (en) 1989-03-15

Family

ID=16828786

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62225401A Pending JPS6469216A (en) 1987-09-10 1987-09-10 System protective device

Country Status (1)

Country Link
JP (1) JPS6469216A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005088801A1 (en) * 2004-03-16 2005-09-22 The Tokyo Electric Power Company Incorporated Electric power system protective device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005088801A1 (en) * 2004-03-16 2005-09-22 The Tokyo Electric Power Company Incorporated Electric power system protective device
EP1729393A1 (en) * 2004-03-16 2006-12-06 The Tokyo Electric Power Co., Inc. Electric power system protective device
JP2009033967A (en) * 2004-03-16 2009-02-12 Tokyo Electric Power Co Inc:The Power system protective device
EP1729393A4 (en) * 2004-03-16 2009-11-18 Tokyo Electric Power Co Electric power system protective device

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