SU1001301A1 - Device for earthing voltage transformer neutral - Google Patents

Device for earthing voltage transformer neutral Download PDF

Info

Publication number
SU1001301A1
SU1001301A1 SU813328129A SU3328129A SU1001301A1 SU 1001301 A1 SU1001301 A1 SU 1001301A1 SU 813328129 A SU813328129 A SU 813328129A SU 3328129 A SU3328129 A SU 3328129A SU 1001301 A1 SU1001301 A1 SU 1001301A1
Authority
SU
USSR - Soviet Union
Prior art keywords
neutral
resistor
voltage transformer
transformer neutral
earthing
Prior art date
Application number
SU813328129A
Other languages
Russian (ru)
Inventor
Павел Петрович Ставицкий
Original Assignee
Главное Производственное Управление Энергетики И Электрификации Киргсср
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 Главное Производственное Управление Энергетики И Электрификации Киргсср filed Critical Главное Производственное Управление Энергетики И Электрификации Киргсср
Priority to SU813328129A priority Critical patent/SU1001301A1/en
Application granted granted Critical
Publication of SU1001301A1 publication Critical patent/SU1001301A1/en

Links

Landscapes

  • Protection Of Transformers (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Description

мотку 1 высокого напр жени  (ВН), обмотки 2 низкого напр жени , маг- . нитопровод 3. В нейтрали 4 обмотки ВН установлены резистор 5 и диод 6. Нейтраль заземлена.hank 1 high voltage (HV), winding 2 low voltage, mag-. nitpipe 3. In the neutral 4 winding HV installed resistor 5 and diode 6. The neutral is grounded.

Устройство работает следующим образом .The device works as follows.

В нормальном режиме работы сети с включением в нейтраль ВН вентил  и резистора не вноситс  в работу се ,ти никаких изменений. Имеющийс  в Сети перекос напр жений вызывает незначительное смещение нейтрали. В разомкнутом треугольнике наводитс  4,3,В, точно так же, как и при глухом заземлении нейтрали.In the normal mode of the network with the inclusion of the HV valve in the neutral and the resistor is not made to the operation of the cross section, no changes will be made. The voltage bias in the network causes a slight neutral displacement. In an open triangle, 4.3, B is induced, just as with a neutral earthing.

При металлическом замыкании на землю фазы А через нейтраль протекают токи замыкани  на землю - индуктивный и емкостный. Диод обеспечивает протекание тока пр мой полуволны . При этом напр жение на нейтрали равно нулю. Обратна  полуволна тока замыкани  на землю протекает через резистор. При этом на нейтрали возникает незначительное напр жение 33 В. Через нейтраль протекает синусоидальный общий ток. Токи в фазах В и С примерно равны и они незначительны 500-100 тД. При этом обеспечиваетс  длительна  работа трансформатора .In the case of a metallic short circuit to earth, the A phases through the neutral flow the ground fault currents - inductive and capacitive. A diode allows current to flow in a straight half wave. In this case, the voltage on the neutral is zero. The reverse of the half-wave of the earth-close current flows through the resistor. At the same time, an insignificant voltage of 33 V appears on the neutral. A sinusoidal total current flows through the neutral. The currents in phases B and C are approximately equal and they are insignificant 500-100 TD. This ensures long-term operation of the transformer.

Режим заземлени  нейтрали с включением в нейтраль вентильно-резисторного устройства становитс  более устойчивым .The grounding mode of the neutral with the inclusion of a valve-resistor device in the neutral becomes more stable.

Claims (2)

Формула изобретени Invention Formula Устройство дл  заземлени  нейтрали трансформатора напр жени , содержащее резистор, отличающеес  тем, что, с целью повышени  надежности путем снижени  токов и напр жений, на нейтрали трансформатора параллельно резистору включен дополнительно введенный диод в сторону нейтрали трансформатора.A device for earthing a neutral voltage transformer containing a resistor, characterized in that, in order to increase reliability by reducing currents and voltages, an additionally inserted diode is connected parallel to the resistor in parallel with the resistor on the transformer neutral. Источники информации, прин тые во внимание при экспертизеSources of information taken into account in the examination 1,Лихачев Ф. Д., Бойко В. И., Змиевский В. М., Панасюк Д. И., Стрел ев П. И. Компенсаци  емкостных токов в сет х 6-10 кВ.- Электрические станции, 1978. № 10.1, Likhachev F. D., Boyko V. I., Zmievsky V. M., Panasyuk D. I., Strel'ev P. I. Compensation of capacitive currents in networks x 6–10 kV.- Electric stations, 1978. ten. 2.Авторское свидетельство СССР № 136813, кл. Н 01 Н 9/02, 1958.2. USSR author's certificate number 136813, cl. H 01 H 9/02, 1958.
SU813328129A 1981-08-07 1981-08-07 Device for earthing voltage transformer neutral SU1001301A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU813328129A SU1001301A1 (en) 1981-08-07 1981-08-07 Device for earthing voltage transformer neutral

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU813328129A SU1001301A1 (en) 1981-08-07 1981-08-07 Device for earthing voltage transformer neutral

Publications (1)

Publication Number Publication Date
SU1001301A1 true SU1001301A1 (en) 1983-02-28

Family

ID=20973142

Family Applications (1)

Application Number Title Priority Date Filing Date
SU813328129A SU1001301A1 (en) 1981-08-07 1981-08-07 Device for earthing voltage transformer neutral

Country Status (1)

Country Link
SU (1) SU1001301A1 (en)

Similar Documents

Publication Publication Date Title
SE7906860L (en) TRANSFORMER ARRANGEMENT FOR CONNECTING A COMMUNICATION SIGNAL TO A THREE-PHASE POWER CORD
FI822628A0 (en) FOERBAETTRINGAR I ELEKTRISKA KABLAR OCH ELEKTRISKA KABELINSTALLATIONER
SU1001301A1 (en) Device for earthing voltage transformer neutral
ES495197A0 (en) IMPROVEMENTS IN A CONNECTION PROVISION FOR MULTI-LIKE DEFECT CURRENT PROTECTION SWITCHES
SU743101A1 (en) Method and device for selective protection of three-phase mains with insulated neutral wire from single-phase earthing
ES495196A0 (en) IMPROVEMENTS IN A CONNECTION PROVISION FOR MULTI-LIKE DEFECT CURRENT PROTECTION SWITCHES
JPS6412489A (en) Deterioration diagnostic method for zinc oxide type arrestor
SU649082A1 (en) Arrangement for protecting dc electric plant from earthing
Suits Non-linear circuits for relay applications
ES8206090A1 (en) Highly sensitive fault current protection switch responding to any current.
ES495195A0 (en) IMPROVEMENTS IN A CONNECTION PROVISION FOR MULTI-LIKE DEFECT CURRENT PROTECTION SWITCHES
SU1358031A1 (en) Arrangement for protection from earthing in electric network with insulated neutral
SU595826A1 (en) Device for limiting shorting current at high-voltage substation
JPS552302A (en) High-tension generator
SU1653060A1 (en) Device for monitoring insulation resistance and disconnection of elements in ungrounded networks
JPS54161369A (en) Method of discovering insufficiently insulated portion of circuit
Van Sickle Capacitance control of voltage distribution in multibreak breakers
SU739419A1 (en) Transformer bridge circuit
SU1396195A1 (en) Device for checking insulation of electric mains with insulated neutral wire
SU807439A1 (en) System for electric power supply of users of unilectrified railways
Atkins An oscillograph for the automatic recording of disturbances on electric supply systems
SU1015466A1 (en) Device for earthing transformer neutral
Vlah et al. Multi-frequency surge withstand capability tests for protective relays
SU699600A1 (en) Device for checking insulation in mains of up to 1000v with insulated neutral wire
SU905937A1 (en) Device for compensating for fault-to-earth current in shaft networks