JPS5422871A - Low frequency component detecting system - Google Patents

Low frequency component detecting system

Info

Publication number
JPS5422871A
JPS5422871A JP8743577A JP8743577A JPS5422871A JP S5422871 A JPS5422871 A JP S5422871A JP 8743577 A JP8743577 A JP 8743577A JP 8743577 A JP8743577 A JP 8743577A JP S5422871 A JPS5422871 A JP S5422871A
Authority
JP
Japan
Prior art keywords
low frequency
frequency component
detecting system
component detecting
maximums
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
JP8743577A
Other languages
Japanese (ja)
Inventor
Goo Nohara
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8743577A priority Critical patent/JPS5422871A/en
Publication of JPS5422871A publication Critical patent/JPS5422871A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To effect the correct detection by judging that the maximum, which is detected by comparing the time-sheared continuous sampling values, and the frequency obtainable from the maximums are higher or lower than preset values, respectively.
COPYRIGHT: (C)1979,JPO&Japio
JP8743577A 1977-07-22 1977-07-22 Low frequency component detecting system Pending JPS5422871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8743577A JPS5422871A (en) 1977-07-22 1977-07-22 Low frequency component detecting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8743577A JPS5422871A (en) 1977-07-22 1977-07-22 Low frequency component detecting system

Publications (1)

Publication Number Publication Date
JPS5422871A true JPS5422871A (en) 1979-02-21

Family

ID=13914780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8743577A Pending JPS5422871A (en) 1977-07-22 1977-07-22 Low frequency component detecting system

Country Status (1)

Country Link
JP (1) JPS5422871A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5825162A (en) * 1994-07-25 1998-10-20 Hitachi, Ltd. Electric power flow controller
JP2016158477A (en) * 2015-02-24 2016-09-01 日新電機株式会社 Digital type protection relay

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5825162A (en) * 1994-07-25 1998-10-20 Hitachi, Ltd. Electric power flow controller
JP2016158477A (en) * 2015-02-24 2016-09-01 日新電機株式会社 Digital type protection relay

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