JPS53139151A - Dc transmission line disconnection detection - Google Patents

Dc transmission line disconnection detection

Info

Publication number
JPS53139151A
JPS53139151A JP5315677A JP5315677A JPS53139151A JP S53139151 A JPS53139151 A JP S53139151A JP 5315677 A JP5315677 A JP 5315677A JP 5315677 A JP5315677 A JP 5315677A JP S53139151 A JPS53139151 A JP S53139151A
Authority
JP
Japan
Prior art keywords
transmission line
disconnection detection
line disconnection
section
max
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
JP5315677A
Other languages
Japanese (ja)
Inventor
Noritoshi Fujii
Tadao Kawai
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 JP5315677A priority Critical patent/JPS53139151A/en
Publication of JPS53139151A publication Critical patent/JPS53139151A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To easily detect disconnection by monitoring the voltage of control circuits and detecting the control angle of the REC section is α min and that of the INV section β max.
COPYRIGHT: (C)1978,JPO&Japio
JP5315677A 1977-05-11 1977-05-11 Dc transmission line disconnection detection Pending JPS53139151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5315677A JPS53139151A (en) 1977-05-11 1977-05-11 Dc transmission line disconnection detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5315677A JPS53139151A (en) 1977-05-11 1977-05-11 Dc transmission line disconnection detection

Publications (1)

Publication Number Publication Date
JPS53139151A true JPS53139151A (en) 1978-12-05

Family

ID=12934973

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5315677A Pending JPS53139151A (en) 1977-05-11 1977-05-11 Dc transmission line disconnection detection

Country Status (1)

Country Link
JP (1) JPS53139151A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55162815A (en) * 1979-06-04 1980-12-18 Tokyo Shibaura Electric Co Dc transmission line disconnection protector
JPS5622524A (en) * 1979-08-01 1981-03-03 Hitachi Ltd Dc transmission line protecting system
JPS5851727A (en) * 1981-09-22 1983-03-26 関西電力株式会社 Disconnection detector for dc transmission line

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55162815A (en) * 1979-06-04 1980-12-18 Tokyo Shibaura Electric Co Dc transmission line disconnection protector
JPS5622524A (en) * 1979-08-01 1981-03-03 Hitachi Ltd Dc transmission line protecting system
JPS5851727A (en) * 1981-09-22 1983-03-26 関西電力株式会社 Disconnection detector for dc transmission line

Similar Documents

Publication Publication Date Title
JPS5283113A (en) Communication system for picture and writings
JPS53139151A (en) Dc transmission line disconnection detection
JPS51128300A (en) Foreign matter detector
JPS57202870A (en) Device for firing light-firing thyristor
JPS53105369A (en) Detection method for impurity concentration
JPS57190274A (en) Deterioration detecting circuit for smoothing circuit
JPS5297090A (en) Disconnection and contact failure detector of detecting potentiometer in automatic control
JPS52123896A (en) Detection circuit of disconnection of fire sensing circuit
JPS5321599A (en) Lamp disconnection detecting circuit
JPS5252394A (en) Transmission type smoke detector
JPS5336947A (en) Connection device between rain doors
JPS5429410A (en) Automatic block sections uniting system
JPS5261989A (en) Interference disturbance prevention radar
JPS546723A (en) Pickup device
JPS5374258A (en) Insulation monitor
JPS5223296A (en) Fire receiver
JPS51142257A (en) Signal-vector discrimination circuit
JPS53120329A (en) Signal detection circuit
JPS5322247A (en) Elevator group controller
JPS546721A (en) Pickup device
JPS53139072A (en) Controller
JPS545546A (en) Desconnection detector for transmission line
JPS5364742A (en) Detection method of abnormal portion in electric network
JPS51120277A (en) Fluid leakage detecting system
JPS5425449A (en) Protective realy