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1. CALCULATION OF TEMPERATURE FIELD IN
POWER CAPACITOR
ABSTRACT
The operating temperature of a power capacitor has an effect on its service life directly.
A 500-kvar power capacitor is taken as the research object. The capacitor fever produced by
internal dielectric loss is considered under the running condition of 55 ◦C. The 3-D finite volume
method calculation model of capacitor temperature is established, and the temperature
distribution characteristics and the internal temperature at the hottest spot of the capacitor are
obtained. With the research on a corresponding prototype, the numerical simulation results are
consistent with the test values. The accuracy of temperature calculation model is testified, which
provides a reliable basis for the design and operation of power capacitor.