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Based on the avalanche effect, an apparatus used for researching distribution characteristic of field in MV switchgear is designed in this paper. The principle and components of the apparatus are analyzed in detail. By setting up circuit for experiment and selecting parameters properly, a nanosecond pulse with rising edge time 10 ns and voltage amplitude 300mV is achieved. An antenna is introduced...
This paper presents a method for noise elimination when using frequency-tuned resonant system to conduct partial discharge measurement on MV cables. An additional pulse transformer is employed to detect the switching actions and identify the occurrence time. This method is verified through high voltage test on a 10 kV power cable.
Based on PXI Express bus protocol and PXI Express hardware specification, PXI Express embedded controller is designed in this paper. MPC8536 is taken as a processor in the overall hardware program. FPGA and PXI Express Switch are taken to design PXI Express interface. Cut and customed VxWorks OS is taken in the software program. U-boot ensure normal operation of the embedded controller. BSP boot the...
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