RU95100250A - Method for detection of supply line frequency - Google Patents
Method for detection of supply line frequencyInfo
- Publication number
- RU95100250A RU95100250A RU95100250/07A RU95100250A RU95100250A RU 95100250 A RU95100250 A RU 95100250A RU 95100250/07 A RU95100250/07 A RU 95100250/07A RU 95100250 A RU95100250 A RU 95100250A RU 95100250 A RU95100250 A RU 95100250A
- Authority
- RU
- Russia
- Prior art keywords
- frequency
- network
- supply line
- detection
- determining
- Prior art date
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
FIELD: electric engineering, in particular, automatic relay protection of electric circuits against faults. SUBSTANCE: method involves measurement of electric signal in supply line for fixed time points, tuning of adaptive filter and detection of supply line frequency by means of roots of characteristic equation. EFFECT: decreased influence of higher-order harmonic frequency on precision and validity of method.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU95100250A RU2110804C1 (en) | 1995-01-10 | 1995-01-10 | Method of determination of frequency of power-supply network |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU95100250A RU2110804C1 (en) | 1995-01-10 | 1995-01-10 | Method of determination of frequency of power-supply network |
Publications (2)
Publication Number | Publication Date |
---|---|
RU95100250A true RU95100250A (en) | 1996-11-27 |
RU2110804C1 RU2110804C1 (en) | 1998-05-10 |
Family
ID=20163820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU95100250A RU2110804C1 (en) | 1995-01-10 | 1995-01-10 | Method of determination of frequency of power-supply network |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2110804C1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2517759C1 (en) * | 2012-12-24 | 2014-05-27 | Дмитрий Александрович Елинов | Device to measure frequency of grid voltage under non-sinusoid noise |
-
1995
- 1995-01-10 RU RU95100250A patent/RU2110804C1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2517759C1 (en) * | 2012-12-24 | 2014-05-27 | Дмитрий Александрович Елинов | Device to measure frequency of grid voltage under non-sinusoid noise |
Also Published As
Publication number | Publication date |
---|---|
RU2110804C1 (en) | 1998-05-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR920010692A (en) | Partial discharge detection device and method of gas insulated switchgear | |
KR950002442B1 (en) | Checking audio system | |
KR910015089A (en) | Digital signal processing method and apparatus. Power system signal processing device and its control device | |
DK0452531T3 (en) | Method for running time measurement of an electrical signal | |
EP0856961A3 (en) | Testing telecommunications apparatus | |
ATE17279T1 (en) | METHOD AND DEVICE FOR MEASUREMENT OF THE AMPLITUDE OF A NOISY PERIODIC SIGNAL WITHOUT PHASE REFERENCE. | |
ATE185198T1 (en) | METHOD FOR MONITORING A THREE-THREE POWER NETWORK FOR A CHANGE IN THE VOLUME OF THE EARTH-Fault EXTINGUISHING COIL | |
FR2812947B1 (en) | METHOD AND DEVICE FOR MEASURING THE ATTENUATION OF A LINE | |
US4305132A (en) | Method to eliminate the noise at known frequency | |
RU95100250A (en) | Method for detection of supply line frequency | |
Tnani et al. | Comparison between different real-time harmonic analysis methods for control of electrical machines | |
DK0793425T3 (en) | Method and apparatus for diagnosing mechanical problems, in particular in cigarette manufacturing facilities | |
GB1383621A (en) | Apparatus for detecting the fundamental frequency of a speech sound | |
Serov et al. | An approach to improve the power frequency measurement accuracy based on the application of low-pass filtration | |
SU935868A1 (en) | Device for measuring transitional process duration | |
RU2082270C1 (en) | Method for separation of inrush of magnetization current and short-circuit current | |
SE9503880L (en) | Measurement method for determining the amplitude and phase of an AC voltage root tone | |
EP1008861A1 (en) | AC calibration apparatus | |
SU920625A2 (en) | Pulse sequence duration meter | |
RU2228559C1 (en) | Frequency difference relay | |
SU1679397A1 (en) | A c digital automatic bridge | |
JPS56140736A (en) | Method and device for testing data transmission circuit line | |
JPS5719638A (en) | Inspection for air leak of wrist watch | |
RU93049541A (en) | METHOD FOR DETERMINING THE FREQUENCY OF ELECTRIC NETWORK | |
SU1038883A1 (en) | Harmonic coefficient measuring device |