JPS57179764A - Receiving device - Google Patents

Receiving device

Info

Publication number
JPS57179764A
JPS57179764A JP56065730A JP6573081A JPS57179764A JP S57179764 A JPS57179764 A JP S57179764A JP 56065730 A JP56065730 A JP 56065730A JP 6573081 A JP6573081 A JP 6573081A JP S57179764 A JPS57179764 A JP S57179764A
Authority
JP
Japan
Prior art keywords
commercial frequency
fault
receiving device
current
commercial
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.)
Granted
Application number
JP56065730A
Other languages
Japanese (ja)
Other versions
JPH0210388B2 (en
Inventor
Chuji Okamura
Tadakatsu Watanabe
Koji Ito
Yukio Fujiwara
Hirotoshi Nagata
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 JP56065730A priority Critical patent/JPS57179764A/en
Publication of JPS57179764A publication Critical patent/JPS57179764A/en
Publication of JPH0210388B2 publication Critical patent/JPH0210388B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/11—Locating faults in cables, transmission lines, or networks using pulse reflection methods

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Locating Faults (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To eliminate a malfunction caused by a commercial frequency current and to search well a fault of high resistance even in a section where the commercial frequency current flows, by setting a filter to eliminate the commercial frequency to a fault point orientating pulse signal receiver. CONSTITUTION:A receiving device 15 can greatly attenuate the commercial frequency component by the function of an active filter consisting of operational amplifiers P1 and P2, resistances R2-R7 plus capacitors C3-C5. Thus an effect of a large commercial current frequency current can be greatly reduced. On the other hand, the pulse current flowed from a high voltage pulse generator when the fault is searched has some fluctuation with its pass output waveform by the effect of the filter 16. However, the DC component has no attenuation with the direct passing properties. As a result, the searching performance is never lowered for a perfect integral type receiving device.
JP56065730A 1981-04-30 1981-04-30 Receiving device Granted JPS57179764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56065730A JPS57179764A (en) 1981-04-30 1981-04-30 Receiving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56065730A JPS57179764A (en) 1981-04-30 1981-04-30 Receiving device

Publications (2)

Publication Number Publication Date
JPS57179764A true JPS57179764A (en) 1982-11-05
JPH0210388B2 JPH0210388B2 (en) 1990-03-07

Family

ID=13295421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56065730A Granted JPS57179764A (en) 1981-04-30 1981-04-30 Receiving device

Country Status (1)

Country Link
JP (1) JPS57179764A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS496423A (en) * 1972-05-08 1974-01-21
JPS496428A (en) * 1972-05-08 1974-01-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS496423A (en) * 1972-05-08 1974-01-21
JPS496428A (en) * 1972-05-08 1974-01-21

Also Published As

Publication number Publication date
JPH0210388B2 (en) 1990-03-07

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