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High-voltage storage capacitor is the key device in weapon system, high reliability is required. In the process of storage and application, effective measurements are needed to ensure the insulation capability of capacitors. Usually, partial discharge (PD) is used to detect the insulation status of capacitors. Under DC there does not exist fundamental parameter Phi , so a new parameter delta (t) is...
With high voltage DC apparatus widely applied nowadays, partial discharge (PD) in these apparatus at DC voltage occurred frequently. However, PD under DC condition is not well understood yet. Therefore, there is an interest on investigation on the character of PD under DC condition. In this paper PD under DC condition is obtained in internal discharge models, surface discharge models and corona discharge...
High voltage storage capacitors have been widely used in industry, agriculture and military fields. From the former researches, it was found breakdown always happened during large impulse discharge process. Through waveforms comparison, large impulse discharge had the similar high dv/dt to high voltage rectangular wave. The high dv/dt caused much partial discharge and space charge effect to insulation...
As for storage capacitor charged under DC and discharges with a large pulse, partial discharge detection under DC is fit for its work condition. The paper presents the principle and construction of a detecting instrument for DC partial discharge (PD) within storage capacitor as well as the results of the first stage experiments. In order to increase the sensitivity of measurement system for large...
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