JPS6328268B2 - - Google Patents

Info

Publication number
JPS6328268B2
JPS6328268B2 JP3330681A JP3330681A JPS6328268B2 JP S6328268 B2 JPS6328268 B2 JP S6328268B2 JP 3330681 A JP3330681 A JP 3330681A JP 3330681 A JP3330681 A JP 3330681A JP S6328268 B2 JPS6328268 B2 JP S6328268B2
Authority
JP
Japan
Prior art keywords
wave
input
time
input wave
sin
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.)
Expired
Application number
JP3330681A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57147067A (en
Inventor
Kazuo Inoe
Koichi Endo
Hiroyasu Wada
Tadahiro Aida
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 Co 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 JP3330681A priority Critical patent/JPS57147067A/ja
Publication of JPS57147067A publication Critical patent/JPS57147067A/ja
Publication of JPS6328268B2 publication Critical patent/JPS6328268B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00Arrangements for measuring phase angle between a voltage and a current or between voltages or currents

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Phase Differences (AREA)
JP3330681A 1981-03-09 1981-03-09 Phase discriminating device Granted JPS57147067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3330681A JPS57147067A (en) 1981-03-09 1981-03-09 Phase discriminating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3330681A JPS57147067A (en) 1981-03-09 1981-03-09 Phase discriminating device

Publications (2)

Publication Number Publication Date
JPS57147067A JPS57147067A (en) 1982-09-10
JPS6328268B2 true JPS6328268B2 (enExample) 1988-06-07

Family

ID=12382865

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3330681A Granted JPS57147067A (en) 1981-03-09 1981-03-09 Phase discriminating device

Country Status (1)

Country Link
JP (1) JPS57147067A (enExample)

Also Published As

Publication number Publication date
JPS57147067A (en) 1982-09-10

Similar Documents

Publication Publication Date Title
McLaren et al. Fourier-series techniques applied to distance protection
EP0322518A1 (en) Digital protective relay
RU2744995C1 (ru) Способ защиты от однофазных замыканий на землю
US4006348A (en) Apparatus for monitoring two electric quantities by combining three consecutive samples of each quantity
US4075697A (en) Apparatus for monitoring two electric quantities by combining three consecutive samples of each quantity
JPS6328268B2 (enExample)
JP3218163B2 (ja) 地絡事故検出方法
JP2923572B2 (ja) 変化幅検出装置
JP3183957B2 (ja) 故障点標定装置
JPH0226451B2 (enExample)
JPS61170222A (ja) デイジタル保護継電器における入力部点検回路
Keerthipala et al. On-line testing of a fuzzy-neuro based protective relay using a real-time digital simulator
JP2945099B2 (ja) ディジタル保護制御装置
SU471555A1 (ru) Устройство дл измерени параметров комплексного сопротивлени конденсаторов
JPH0619409B2 (ja) 直流送電系の故障点標定装置
JPH05180885A (ja) 1線接地した三相3線式電路の絶縁抵抗測定方法 及び装置
JP2520713B2 (ja) デジタル保護継電器
SU834677A1 (ru) Устройство дл определени экстре-МАльНыХ зНАчЕНий элЕКТРичЕСКиХ Сиг-НАлОВ
JPH11113174A (ja) 電力系統の状態推定装置
SU555405A1 (ru) Устройство дл определени функций коррел ции фазы случайных импульсных сигналов
JPH09222440A (ja) 系統故障時の電気量検出方法
SU497603A1 (ru) Устройство дл моделировани задач теории пол
JPS6248451B2 (enExample)
SU1697232A1 (ru) Автономный инвертор тока
SU885932A1 (ru) Устройство дл определени поврежденной фазы при однофазном замыкании на землю в сети с изолированной нейтралью