Abstract:

 In order to enhance the shielding factor and reduce the PC volume of partial discharge （PD） in the PD test of power cable, this paper proposed the control system to improve the high voltage side filter performance of power frequency series resonance equipment, which could effectively improve the stability of the test, and remove the spectrum burr of PD. The integrated parallel reactive power compensation system, which was design by conductance algorithm based on Fryze-Buchholz-Dpenbrock method （FBD）, could enhance the following features of voltage and current, and achieve a good harmonic filter effect. Meanwhile, the parameters of capacitance and inductance in whole system were optimized, and the capacity of three-phase VSC converter was effectively tuned, which could not only make the control system achieve optimal compensation performance, but also make the capacity tuning of the converter be in the minimum state. The experimental simulation and the field PD test of power cable prove that the control system can significantly enhance the stability and adaptive ability of the power cables PD test.

Key words:  partial discharge （PD）, resonance reactor, Fryze-Buchholz-Dpenbrock method （FBD）, integrated parallel reactive power compensation system