The present invention relates to the confession collector system of efficiency of transmission stability can be also maintained in a kind of variation of resonant frequency, particularly, collector system is supplied the present invention relates to one kind, under the situation changed therewith by variation of resonant frequency voltage or electric current, the stability of the power transmission efficiency from electric supply installation to current collecting equipment can be also maintained.According to the confession collector system of the present invention, due to the Q factor for collector system is set as into relatively low value, so as under the situation changed therewith by variation of resonant frequency voltage or electric current, can also maintain the stability of the electric power transmission efficiency from electric supply installation to current collecting equipment.