SU382194A1 - DEVICE FOR DETERMINING THE DIRECTION OF THE HIGH-FREQUENCY COMPONENT OF THE TRANSITION PROCESS WHEN SLOOTING ON THE EARTH from the frequency range one frequency (or some frequency band), an organ for comparing the phases of the current and voltage, and a threshold element. To simplify the circuit and increase the reliability of operation in the proposed device The driving tires on the side of the unprotected area are shunted by a series oscillatory circuit tuned to the operating frequency of the protection, and there is a band-pass filter between the current sensor and the threshold element [> & tr.]. - Google Patents

DEVICE FOR DETERMINING THE DIRECTION OF THE HIGH-FREQUENCY COMPONENT OF THE TRANSITION PROCESS WHEN SLOOTING ON THE EARTH from the frequency range one frequency (or some frequency band), an organ for comparing the phases of the current and voltage, and a threshold element. To simplify the circuit and increase the reliability of operation in the proposed device The driving tires on the side of the unprotected area are shunted by a series oscillatory circuit tuned to the operating frequency of the protection, and there is a band-pass filter between the current sensor and the threshold element [> & tr.].

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Publication number
SU382194A1
SU382194A1 SU1674113A SU1674113A SU382194A1 SU 382194 A1 SU382194 A1 SU 382194A1 SU 1674113 A SU1674113 A SU 1674113A SU 1674113 A SU1674113 A SU 1674113A SU 382194 A1 SU382194 A1 SU 382194A1
Authority
SU
USSR - Soviet Union
Prior art keywords
frequency
threshold element
band
current
shunted
Prior art date
Application number
SU1674113A
Other languages
Russian (ru)
Inventor
датчик тока внутренн иплуктивность источника тока защищаемого короткого замыкани соответственно Колебательный контур делит защищаемую цепь две зоны защищаемую неза пиицаемую При этом контур нас Устройство содержит последовательный колебательный полосовой фильтр пороговый реагирующий элемент
иороговый элемент подключен датчику тока через полосовой фильтр пропускающий частоту Р. тоту выбраин качестве рабочей сигнальной данной защиты
источник которой дуга короткое замыкание или замыкание землю расположен защищаемой зоне замыкаетс через колебательный контур датчик тока установленный любой точке заи ишд ае мой зоны цени дает достаточную информацию наличии повреждеин этой зоне Цепь тока сигнальной высокочастотной составл ющей
поэтому защита срабатывает При влении поврежденп иезащищае мой зоне цень датчика тока сигнальной частоты защуитирована колебательным контуром
Сопротивление колебательного контура сигнальной частоте должно быть раз меньще сопротивлени незащищаемого участка цепи источника этой стоте
жении напр
помехи обеспечивающих надежную работу выбранного защиты порогового реагирующего элемента Кроме функции разделени цепи защищаемую незащищаемую зоны колебательный контур осуществл также отсечку действи защиты времени несрабатывание защиты кратковременных замыканий сигнала
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 filed Critical
Priority to SU1674113A priority Critical patent/SU382194A1/en
Application granted granted Critical
Publication of SU382194A1 publication Critical patent/SU382194A1/en

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Description

Врем  замедлени  защиты определ ют как врем  нарастани  импульса сигнальной настоть через контур по формулеThe time of protection deceleration is defined as the time of rise of a pulse of a signal infusion through a circuit using the formula

- R 1,2.Д где Д/к - полоса пропускани ; Q - добротность; fp - резонансна  частота контура.- R 1,2. D where D / k - bandwidth; Q - good quality; fp is the resonant frequency of the circuit.

Предмет изобретени  Устройство дл  определени  направлени The subject of the invention. A device for determining the direction

высокочастотной составл ющей переходного процесса при замыкании на землю в сет х с изолированной нейтралью, содержащее датчик тока, включенный в токоведущие шины, и пороговый элемент, отличающеес  тем, что, с целью упрощени  и повышени  надежности, токоведущие щины со стороны незащищаемой зоны шунтированы последовательным колебательным контуром, настроенным на рабочую частоту, а между датчиком тока и пороговым элементом включен полосовой фильтр.the high-frequency component of the transient at the earth fault in networks with insulated neutral, containing a current sensor included in current-carrying buses, and a threshold element, characterized in that, in order to simplify and increase reliability, current-carrying currents from the unprotected zone are shunted by successive oscillatory A loop tuned to the operating frequency, and a band-pass filter is connected between the current sensor and the threshold element.

SU1674113A 1971-06-28 1971-06-28 DEVICE FOR DETERMINING THE DIRECTION OF THE HIGH-FREQUENCY COMPONENT OF THE TRANSITION PROCESS WHEN SLOOTING ON THE EARTH from the frequency range one frequency (or some frequency band), an organ for comparing the phases of the current and voltage, and a threshold element. To simplify the circuit and increase the reliability of operation in the proposed device The driving tires on the side of the unprotected area are shunted by a series oscillatory circuit tuned to the operating frequency of the protection, and there is a band-pass filter between the current sensor and the threshold element [> & tr.]. SU382194A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1674113A SU382194A1 (en) 1971-06-28 1971-06-28 DEVICE FOR DETERMINING THE DIRECTION OF THE HIGH-FREQUENCY COMPONENT OF THE TRANSITION PROCESS WHEN SLOOTING ON THE EARTH from the frequency range one frequency (or some frequency band), an organ for comparing the phases of the current and voltage, and a threshold element. To simplify the circuit and increase the reliability of operation in the proposed device The driving tires on the side of the unprotected area are shunted by a series oscillatory circuit tuned to the operating frequency of the protection, and there is a band-pass filter between the current sensor and the threshold element [> & tr.].

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1674113A SU382194A1 (en) 1971-06-28 1971-06-28 DEVICE FOR DETERMINING THE DIRECTION OF THE HIGH-FREQUENCY COMPONENT OF THE TRANSITION PROCESS WHEN SLOOTING ON THE EARTH from the frequency range one frequency (or some frequency band), an organ for comparing the phases of the current and voltage, and a threshold element. To simplify the circuit and increase the reliability of operation in the proposed device The driving tires on the side of the unprotected area are shunted by a series oscillatory circuit tuned to the operating frequency of the protection, and there is a band-pass filter between the current sensor and the threshold element [> & tr.].

Publications (1)

Publication Number Publication Date
SU382194A1 true SU382194A1 (en) 1973-05-22

Family

ID=20480533

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1674113A SU382194A1 (en) 1971-06-28 1971-06-28 DEVICE FOR DETERMINING THE DIRECTION OF THE HIGH-FREQUENCY COMPONENT OF THE TRANSITION PROCESS WHEN SLOOTING ON THE EARTH from the frequency range one frequency (or some frequency band), an organ for comparing the phases of the current and voltage, and a threshold element. To simplify the circuit and increase the reliability of operation in the proposed device The driving tires on the side of the unprotected area are shunted by a series oscillatory circuit tuned to the operating frequency of the protection, and there is a band-pass filter between the current sensor and the threshold element [> & tr.].

Country Status (1)

Country Link
SU (1) SU382194A1 (en)

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