SU99921A1 - Method of measuring dielectric loss angle - Google Patents

Method of measuring dielectric loss angle

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Publication number
SU99921A1
SU99921A1 SU449234A SU449234A SU99921A1 SU 99921 A1 SU99921 A1 SU 99921A1 SU 449234 A SU449234 A SU 449234A SU 449234 A SU449234 A SU 449234A SU 99921 A1 SU99921 A1 SU 99921A1
Authority
SU
USSR - Soviet Union
Prior art keywords
dielectric loss
loss angle
bridge
measuring dielectric
current
Prior art date
Application number
SU449234A
Other languages
Russian (ru)
Inventor
М.П. Федотов
Original Assignee
М.П. Федотов
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 М.П. Федотов filed Critical М.П. Федотов
Priority to SU449234A priority Critical patent/SU99921A1/en
Application granted granted Critical
Publication of SU99921A1 publication Critical patent/SU99921A1/en

Links

Description

Предметом изобретени   вл етс  способ измерени  угла диэлектрических потерь высоковольтной изол ции при помощи измерительного моста переменното тока.The subject of the invention is a method for measuring the dielectric loss angle of high voltage insulation using an ac current measuring bridge.

При измерени х угла диэлектрических потерь высоковольтной изол ции возникают трудности, обусловленные вли нием магнитных полей, создаваемых токонесущими част ми, например, сборными шинами и силовыми трансформаторами распределительного устройства.When measuring the dielectric loss angle of high-voltage insulation, difficulties arise due to the influence of magnetic fields created by current-carrying parts, for example, busbars and power transformers of the switchgear.

Если вблизи испытуемого объекта, емкость которого обозначена буквой С,,, нет токонесущих частей, то по сопротивлени м ь R- и Rs, образуюп;им плечи высоковольтного моста, и по его диагонали (т. е. через гальванометр Г) протекают токи Г тр иIf there are no current-carrying parts near the object under test, the capacitance of which is designated with the letter C, then the resistance of the R- and Rs to form the shoulders of the high-voltage bridge and its diagonal (i.e., through the galvanometer D) currents D three

//

Тр, вызываемые питающим мостTr caused by feeding the bridge

напр жением, прикладываемым к зажимам А-Б первичной обмотки повысителыюго трансформатора Тр. Величина этих токов зависит от величии емкостей Сл- и С..voltage applied to terminals A-B of the primary winding of a transformer. Tr. The magnitude of these currents depends on the magnitude of the capacitances of SL and C.

Регулировкой сопротивлени  , R- и можно добитьс  баланса моста , т. е. отсутстви  тока в его диагонали .By adjusting the resistance, R- and you can achieve a balance of the bridge, i.e. there is no current in its diagonal.

По иоложению ручек моста можно при этом судить о 1 еличине емкостиAccording to the position of the bridge handles, one can judge about the size of the tank

и о гаигенсе угла диэлектрических потерь испытуемого объекта (Z;g 4v. and on the hygiene of the dielectric loss angle of the test object (Z; g 4v.

Наличие вблизи испытуемого объекта токонесущих частей влечет за собой по вление в сопротивлени х RI, R- и RI, и в диагонали моста дополиительных токов (/„ и / „), нарушаюгцих балаис моста. В этом случае по атоложению ручек., соответствующему балансу моста, вследствие вредного действи  посторонних полей нельз  судить о величине емкости Сд. и (-) угла диэлектрических потерь tg о..The presence of current-carrying parts near the test object entails the appearance of additional currents (/ "and /") in the resistances RI, R- and RI, and in the diagonal of the bridge, which violate the balance of the bridge. In this case, according to the position of the handles, the corresponding balance of the bridge, due to the harmful effects of foreign fields, it is impossible to judge the size of the capacitance Cd. and (-) dielectric loss angle tg o ..

Известные способы исключени  иомех, в частности, способ производства двух измерений угла потерь, мало эффективны при наличии очень сильных полей и, кроме того, снижают точность измерени .The known methods of excluding iomechs, in particular, the method of making two measurements of the angle of loss, are not very effective in the presence of very strong fields and, in addition, reduce the accuracy of measurement.

Предлагаемый способ измерени  угла диэлектрических потерь высоковольтной изол ции обеспечивает возможность осуществлени  измерений вблизи токоиесущих частей, создающих искажаюн1ие магнитные иол .The proposed method for measuring the dielectric loss angle of high-voltage insulation provides the possibility of taking measurements near current-carrying parts, creating distorted magnetic iol.

В соответствии с изобрете1;ием измерительный мост питаетс  перемо- ным током не промыш: еино частоты (50 ), а током - есколько болееIn accordance with the invention; 1, the measuring bridge is powered by an alternating current not industrial: the frequency (50), and the current — a little more

SU449234A 1952-11-14 1952-11-14 Method of measuring dielectric loss angle SU99921A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU449234A SU99921A1 (en) 1952-11-14 1952-11-14 Method of measuring dielectric loss angle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU449234A SU99921A1 (en) 1952-11-14 1952-11-14 Method of measuring dielectric loss angle

Publications (1)

Publication Number Publication Date
SU99921A1 true SU99921A1 (en) 1954-11-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU449234A SU99921A1 (en) 1952-11-14 1952-11-14 Method of measuring dielectric loss angle

Country Status (1)

Country Link
SU (1) SU99921A1 (en)

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