PL407562A1 - Method for measuring the capacity and resistance of interwinding insulation in power transformers - Google Patents

Method for measuring the capacity and resistance of interwinding insulation in power transformers

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Publication number
PL407562A1
PL407562A1 PL407562A PL40756214A PL407562A1 PL 407562 A1 PL407562 A1 PL 407562A1 PL 407562 A PL407562 A PL 407562A PL 40756214 A PL40756214 A PL 40756214A PL 407562 A1 PL407562 A1 PL 407562A1
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PL
Poland
Prior art keywords
current
resistance
voltage
capacity
measuring
Prior art date
Application number
PL407562A
Other languages
Polish (pl)
Other versions
PL225763B1 (en
Inventor
Tadeusz Glinka
Jakub Bernatt
Artur Polak
Original Assignee
Instytut Napędów I Maszyn Elektrycznych Komel
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.)
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Publication date
Application filed by Instytut Napędów I Maszyn Elektrycznych Komel filed Critical Instytut Napędów I Maszyn Elektrycznych Komel
Priority to PL407562A priority Critical patent/PL225763B1/en
Publication of PL407562A1 publication Critical patent/PL407562A1/en
Publication of PL225763B1 publication Critical patent/PL225763B1/en

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Abstract

Sposób pomiaru pojemności Ciz i rezystancji Riz izolacji międzyzwojowej w transformatorach energetycznych obejmuje dwa pomiary. Pomiar pierwszy: rezystorem (Rr) ustawia się wartość prąd I0 i mierzy się napięcie UB0 na uzwojeniu zasilanym (B-0), a następnie wyłącznikiem (W2) zwiera się uzwojenie zasilane (B-0) i rejestruje się zanikanie prądu I(t). Z przebiegu zanikania prądu I(t) wyznacza się elektromagnetyczną stałą czasową TL. Pomiar drugi: ponownie ustala się wartość prądu I0, a następnie, wyłącznikiem (W1), wyłącza się prąd I0 i rejestruje się przebieg napięcia U(t) na uzwojeniu (B-0). Z przebiegu napięcia U(t) odczytuje się wartość maksymalną napięcia Umax oraz powierzchnię FU pod krzywą przebiegu napięcia. Z pomierzonych wartości prądu I0 i napięcia Umax oraz parametrów TL i FU oblicza się pojemność Ciz i rezystancję Riz: (A).The method of measuring the Ciz capacity and the Riz resistance of inter-turn insulation in power transformers includes two measurements. First measurement: the resistor (Rr) sets the value of current I0 and the voltage UB0 is measured on the supplied winding (B-0), and then the switch (W2) closes the powered winding (B-0) and the loss of current I (t) is recorded . From the current decay I (t), the electromagnetic time constant TL is determined. Second measurement: the current value I0 is set again, and then, with the switch (W1), the current I0 is switched off and the voltage waveform U (t) on the winding (B-0) is recorded. From the voltage waveform U (t), the maximum value of voltage Umax and the surface FU are read under the voltage waveform. The capacitance Ciz and the resistance Riz are calculated from the measured values of current I0 and voltage Umax as well as parameters TL and FU: (A).

PL407562A 2014-03-17 2014-03-17 Method for measuring the capacity and resistance of interwinding insulation in power transformers PL225763B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL407562A PL225763B1 (en) 2014-03-17 2014-03-17 Method for measuring the capacity and resistance of interwinding insulation in power transformers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL407562A PL225763B1 (en) 2014-03-17 2014-03-17 Method for measuring the capacity and resistance of interwinding insulation in power transformers

Publications (2)

Publication Number Publication Date
PL407562A1 true PL407562A1 (en) 2015-09-28
PL225763B1 PL225763B1 (en) 2017-05-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
PL407562A PL225763B1 (en) 2014-03-17 2014-03-17 Method for measuring the capacity and resistance of interwinding insulation in power transformers

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PL (1) PL225763B1 (en)

Also Published As

Publication number Publication date
PL225763B1 (en) 2017-05-31

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