JPS53147947A - Digital protective relay - Google Patents

Digital protective relay

Info

Publication number
JPS53147947A
JPS53147947A JP6301177A JP6301177A JPS53147947A JP S53147947 A JPS53147947 A JP S53147947A JP 6301177 A JP6301177 A JP 6301177A JP 6301177 A JP6301177 A JP 6301177A JP S53147947 A JPS53147947 A JP S53147947A
Authority
JP
Japan
Prior art keywords
transmission line
protective relay
digital protective
promote
precision
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
JP6301177A
Other languages
Japanese (ja)
Inventor
Yoshiji Nii
Takashi Yoshida
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.)
Mitsubishi Electric Corp
Tokyo Electric Power Company Holdings Inc
Original Assignee
Tokyo Electric Power Co Inc
Mitsubishi Electric 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 Tokyo Electric Power Co Inc, Mitsubishi Electric Corp filed Critical Tokyo Electric Power Co Inc
Priority to JP6301177A priority Critical patent/JPS53147947A/en
Publication of JPS53147947A publication Critical patent/JPS53147947A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To promote an improvement of precision in protective operation, by removing a high frequency wave component in voltage and current at both ends of the power transmission line, when operating a protection of the transmission line by means of detecting a change of propagation state in progressive wave caused by an internal fault in the transmission line.
COPYRIGHT: (C)1978,JPO&Japio
JP6301177A 1977-05-30 1977-05-30 Digital protective relay Pending JPS53147947A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6301177A JPS53147947A (en) 1977-05-30 1977-05-30 Digital protective relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6301177A JPS53147947A (en) 1977-05-30 1977-05-30 Digital protective relay

Publications (1)

Publication Number Publication Date
JPS53147947A true JPS53147947A (en) 1978-12-23

Family

ID=13216941

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6301177A Pending JPS53147947A (en) 1977-05-30 1977-05-30 Digital protective relay

Country Status (1)

Country Link
JP (1) JPS53147947A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53127657A (en) * 1977-04-13 1978-11-08 Hitachi Ltd Carrier protective relay system
JPS53146150A (en) * 1977-05-25 1978-12-19 Tokyo Electric Power Co Inc:The Carrier protective relaying system
JPS53147250A (en) * 1977-05-27 1978-12-21 Hitachi Ltd Carrier protective relay system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53127657A (en) * 1977-04-13 1978-11-08 Hitachi Ltd Carrier protective relay system
JPS53146150A (en) * 1977-05-25 1978-12-19 Tokyo Electric Power Co Inc:The Carrier protective relaying system
JPS53147250A (en) * 1977-05-27 1978-12-21 Hitachi Ltd Carrier protective relay system

Similar Documents

Publication Publication Date Title
JPS53147947A (en) Digital protective relay
JPS5251549A (en) Over voltage and over current suppression equipment for inverter
JPS53147944A (en) Digital protective relay
JPS52114939A (en) Digital protective relay unit
JPS53116446A (en) Fault point locator for power transmission line
JPS52120353A (en) Protective device for dc power transmission system
JPS531845A (en) Digital protective relay
JPS52153141A (en) Transformer protective relay system
JPS5372149A (en) Protective relay
JPS5383046A (en) Digital protective relay
JPS53141569A (en) Protective device for commutation failure of switching element
JPS53107643A (en) Protective relaying equipment
JPS51121751A (en) Protective relaying system for removing power break-down section in hi gh transmission line
JPS5310039A (en) Leak breaker operation indicating device with protective lamp
JPS5438538A (en) Protective device for synchronous machine
JPS52153142A (en) Transformer protective relay system
JPS5383049A (en) Digital protective relay
JPS52156360A (en) Digital protective relay
JPS547122A (en) Protective circuit for static power converter
JPS51134848A (en) Frost damage protector
JPS5582973A (en) Method for equivalent test of breaker
JPS5350776A (en) Phase discrimination circuit
JPS5419145A (en) Digital protective relay
JPS53107632A (en) Operating dc power transmission system
JPS5419144A (en) Digital protective relay