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.].Info
- 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
Links
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
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.
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) |
-
1971
- 1971-06-28 SU SU1674113A patent/SU382194A1/en active
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