Design of portable discharge signal source online system

 

 

CHEN Huipeng, LI Wenxin, WANG Kunzhe, JIN Duting

 

(School of mechanical engineering, Hangzhou Dianzi University, Hangzhou 310018, China)

 

 

Abstract: Aiming at the discharge test problems in the practical application of the smart grid, the ADF4350 frequency synthesizer′s basic principle and working characteristics were reseached. Using the technologies such as phase lock loop, filter group, extraction of synchronization signal, programcontrolled switch, through AVR Atmega128 chip, a hardware circuit control structure and software program design method of ADF4350 was presented, a set of multiband signal source which can apply in the smart grid partial discharge monitoring was gotten. With a simple operation in client dashboard, the field staff can conveniently realize the online monitoring after the mode selection and setting. The results indicate that the signal source can cover all signal frequency, in the field test, phase locking effect is good, easy to carry, reliable in performance.

 

Key words: frequency synthesizer; signal source; filter group; sync signal