SE8702683D0 - Frekvensrele - Google Patents

Frekvensrele

Info

Publication number
SE8702683D0
SE8702683D0 SE8702683A SE8702683A SE8702683D0 SE 8702683 D0 SE8702683 D0 SE 8702683D0 SE 8702683 A SE8702683 A SE 8702683A SE 8702683 A SE8702683 A SE 8702683A SE 8702683 D0 SE8702683 D0 SE 8702683D0
Authority
SE
Sweden
Prior art keywords
frequency
determining
output signal
hand
permissible
Prior art date
Application number
SE8702683A
Other languages
English (en)
Other versions
SE8702683L (sv
SE458070B (sv
Original Assignee
Asea Ab
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 Asea Ab filed Critical Asea Ab
Priority to SE8702683A priority Critical patent/SE458070B/sv
Publication of SE8702683D0 publication Critical patent/SE8702683D0/sv
Priority to EP88109961A priority patent/EP0297418A1/en
Publication of SE8702683L publication Critical patent/SE8702683L/sv
Publication of SE458070B publication Critical patent/SE458070B/sv

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/46—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to frequency deviations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/15—Indicating that frequency of pulses is either above or below a predetermined value or within or outside a predetermined range of values, by making use of non-linear or digital elements (indicating that pulse width is above or below a certain limit)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis
    • G01R23/165—Spectrum analysis; Fourier analysis using filters
    • G01R23/167—Spectrum analysis; Fourier analysis using filters with digital filters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Complex Calculations (AREA)
SE8702683A 1987-06-29 1987-06-29 Foerfarande och anordning vid ett frekvensrelae SE458070B (sv)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8702683A SE458070B (sv) 1987-06-29 1987-06-29 Foerfarande och anordning vid ett frekvensrelae
EP88109961A EP0297418A1 (en) 1987-06-29 1988-06-23 Method for operating a frequency relay and frequency relay for carrying out the method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8702683A SE458070B (sv) 1987-06-29 1987-06-29 Foerfarande och anordning vid ett frekvensrelae

Publications (3)

Publication Number Publication Date
SE8702683D0 true SE8702683D0 (sv) 1987-06-29
SE8702683L SE8702683L (sv) 1988-12-30
SE458070B SE458070B (sv) 1989-02-20

Family

ID=20369007

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8702683A SE458070B (sv) 1987-06-29 1987-06-29 Foerfarande och anordning vid ett frekvensrelae

Country Status (2)

Country Link
EP (1) EP0297418A1 (sv)
SE (1) SE458070B (sv)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2725276B1 (fr) * 1994-09-29 1996-11-08 France Etat Procede et dispositif de determination de la frequence et de l'amplitude exactes d'un signal sinusoidal
AU707660B2 (en) 1996-04-01 1999-07-15 Cic Global Llc Distributed frequency relay
US6882947B2 (en) * 2001-12-31 2005-04-19 Teradyne, Inc. Discrete fourier transform (DFT) leakage removal
SE0201686L (sv) * 2002-06-04 2003-12-05 Totalfoersvarets Forskningsins Förbättrat sätt för snabb frekvensbestämning med hjälp av RLS-metoden
FR3017715B1 (fr) 2014-02-20 2017-06-16 Schneider Electric Ind Sas Detection d'un defaut, notamment transitoire, dans un reseau electrique.
FR3037658B1 (fr) * 2015-06-16 2018-05-18 Schneider Electric Industries Sas Procede et dispositif de detection d'un defaut dans un reseau electrique
CN114675078B (zh) * 2022-03-17 2023-08-11 苏州大学 基于连续多采样的三相交流电网频率估计方法及系统

Also Published As

Publication number Publication date
EP0297418A1 (en) 1989-01-04
SE8702683L (sv) 1988-12-30
SE458070B (sv) 1989-02-20

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