| 摘要 |
FIELD: physics. ^ SUBSTANCE: instantaneous voltage and current values are measured in the same time instants tj=t1,t2,Ç,tn with sampling interval where T is the period of the current/voltage signal; N is the number of readings per period T. Said values are stored as present values. Further, active power loss öP on ohmic resistance of the capacitor, reactive power Q and the current value of current I are simultaneously determined. After that parametres of the series equivalent circuit of the power capacitor are determined: ohmic resistance and capacitance: where ë is angular frequency. ^ EFFECT: avoiding the need for additional measurements. ^ 3 dwg, 3 tbl |
