SU788032A1 - Method of measuring resistance of three-phase transformer windings - Google Patents
Method of measuring resistance of three-phase transformer windings Download PDFInfo
- Publication number
- SU788032A1 SU788032A1 SU762432911A SU2432911A SU788032A1 SU 788032 A1 SU788032 A1 SU 788032A1 SU 762432911 A SU762432911 A SU 762432911A SU 2432911 A SU2432911 A SU 2432911A SU 788032 A1 SU788032 A1 SU 788032A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- windings
- phase transformer
- transformer
- measuring
- measuring resistance
- Prior art date
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- Measurement Of Resistance Or Impedance (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Description
1one
Изобретение относитс к электроизмерени м и может быть использовано при электромонтаже, наладке и эксплуатации мощных высоковольтных трехфазных силовых трансформаторов,The invention relates to electrical measurements and can be used in the electrical installation, commissioning and operation of high-power high-voltage three-phase power transformers,
Ьзвестен способ измерени сопротивлени обмоток посто нному току, основанный на пропускании тока через одну из обмоток трансформатора, измерении тока и падени напр жени на обмотке 1.A known method for measuring DC resistance of windings is based on passing current through one of the transformer windings, measuring the current and voltage drop across winding 1.
Недостатком этого способа вл етс то, что при наличии нескольких обмоток и большого числа ответвлений (дл регулировани напр жени под нагрузкой) общее врем , необходимое дл измерени сопротивлений всех обмоток на всех фазах, значительно возрастает и достигает нескольких часов, в течение которых измен ютс внешние услови (температура, влажность и др.), что приводит к возникновению погрешностей результатов измерений трансформатора в целом.The disadvantage of this method is that when there are several windings and a large number of branches (to regulate the voltage under load), the total time required to measure the resistance of all windings on all phases increases significantly and reaches several hours during which the external conditions (temperature, humidity, etc.), which leads to errors in the measurement results of the transformer as a whole.
Цель изобретени - сокращение времени измерени .The purpose of the invention is to reduce the measurement time.
Указанна цель достигаетс путем измерени тока, протекающего через обмотку, и падени напр жени на ней при пропускании токов одинаковой величины одновременно по обмоткам трех фаз трансформатора, причем магнитные потоки имеют одинаковое направление.This goal is achieved by measuring the current flowing through the winding and the voltage drop across it by passing currents of the same magnitude simultaneously along the windings of the three phases of the transformer, and the magnetic fluxes have the same direction.
На чертеже представлена принципиальна электрическа схема устройства , реализующего способ измерени сопротивлени обмотки трансформатора.The drawing shows a circuit diagram of a device that implements a method for measuring the resistance of a transformer winding.
Устройство содержит обмотки трансформатора 1, шунты 2-4, выключатель The device contains a winding of the transformer 1, shunts 2-4, switch
10 5, клеммы 6 дл подключени источника питани , переключатель 7 дл подключен11 вольтметра к шунтс1М 2-4, переключатель 8 дл подключени воль 5 тметра-к обмоткам трансформатора 1, клеммы 9 дл подключени вольтметра.10 5, terminals 6 for connecting the power source, switch 7 for connecting 11 voltmeters to shunts 1M 2-4, switch 8 for connecting volts 5 meters to the windings of the transformer 1, terminals 9 for connecting the voltmeter.
Устройство работает следующим образом.The device works as follows.
К клеммам 6 подключают источник питани , а к клеммам 9 - вольтметр. A power source is connected to terminals 6, and a voltmeter is connected to terminals 9.
20 Переключатель 8 устанавливают в положение О ,при котором вольтметр отключаетс от схемы дл предохранени от повреждени в момент включени тока до наступлени его устано25 вившегос значени (окончани переходного процесса в трансформаторе). Переключатель 7 устанавливают в положение li (измерение). Включают 30 выключатель Ь, при этом общий ток20 Switch 8 is set to position O, in which the voltmeter is disconnected from the circuit to prevent damage at the moment of switching on the current until its set value is 25 (the end of the transient process in the transformer). Switch 7 is set to li (measurement). Turn on switch 30 b, with the total current
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU762432911A SU788032A1 (en) | 1976-12-24 | 1976-12-24 | Method of measuring resistance of three-phase transformer windings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU762432911A SU788032A1 (en) | 1976-12-24 | 1976-12-24 | Method of measuring resistance of three-phase transformer windings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU788032A1 true SU788032A1 (en) | 1980-12-15 |
Family
ID=20687742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU762432911A SU788032A1 (en) | 1976-12-24 | 1976-12-24 | Method of measuring resistance of three-phase transformer windings |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU788032A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2653173C2 (en) * | 2016-08-22 | 2018-05-07 | Общество с ограниченной ответственностью "Челэнергоприбор" | Method of measuring resistance to direct current |
| RU2696365C1 (en) * | 2018-08-01 | 2019-08-01 | Общество с ограниченной ответственностью "Челэнергоприбор" | Method of measuring resistance to direct current |
-
1976
- 1976-12-24 SU SU762432911A patent/SU788032A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2653173C2 (en) * | 2016-08-22 | 2018-05-07 | Общество с ограниченной ответственностью "Челэнергоприбор" | Method of measuring resistance to direct current |
| RU2696365C1 (en) * | 2018-08-01 | 2019-08-01 | Общество с ограниченной ответственностью "Челэнергоприбор" | Method of measuring resistance to direct current |
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