RU95100250A - Method for detection of supply line frequency - Google Patents

Method for detection of supply line frequency

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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
Application number
RU95100250/07A
Other languages
Russian (ru)
Other versions
RU2110804C1 (en
Inventor
В.И. Антонов
А.А. Ильин
В.М. Шевцов
Original Assignee
Чувашский государственный университет
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 Чувашский государственный университет filed Critical Чувашский государственный университет
Priority to RU95100250A priority Critical patent/RU2110804C1/en
Publication of RU95100250A publication Critical patent/RU95100250A/en
Application granted granted Critical
Publication of RU2110804C1 publication Critical patent/RU2110804C1/en

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  • 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)

Изобретение относится к электротехнике, а именно, к релейной защите и противоаварийной автоматике электрических систем и может быть использовано в цифровых системах защиты при прецизионном определении частоты сети. Сущность изобретения: в способе определения частоты в электрической сети, основанном на измерении электрического сигнала сети в фиксированные моменты времени, настройке адаптивного фильтра и определении частоты сети по корням характеристического уравнения, введены новые операции, позволяющие исключить влияние высших гармоник на точность и достоверность определения частоты сети.The invention relates to electrical engineering, namely, relay protection and emergency automation of electrical systems and can be used in digital protection systems with precision determination of the network frequency. The inventive method for determining the frequency in the electric network, based on measuring the electric signal of the network at fixed times, tuning the adaptive filter and determining the frequency of the network from the roots of the characteristic equation, introduced new operations to eliminate the influence of higher harmonics on the accuracy and reliability of determining the frequency of the network .
RU95100250A 1995-01-10 1995-01-10 Method of determination of frequency of power-supply network RU2110804C1 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

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