ACCURACY ANALYSIS IN DETERMINING THE CONDUCTANCE OF PHASES INSULATION OF ELECTRICAL NETWORK WITH RESPECT TO GROUND WITHIN THE FRAMEWORK OF DEVELOPED METHOD FOR MONITORING THE INSULATION PARAMETERS IN NETWORKS OF 6 KV

Abstract

In this work study of accuracy analysis in determining the conductance of phases insulation of electrical network with respect to ground within the framework of developed method for monitoring the insulation parameters in networks of 6 kV at auxiliaries of the power station were conducted. The developed method is based on connecting the additional conductance between phase of electrical network and ground; measuring the phase voltage module value with respect to ground before connecting the additional conductance; measuring the zero sequence voltage module values; measuring the phase voltage value with respect to ground during connecting the additional conductance between this phase and ground. The study has shown that determining the conductance of network isolation with respect to ground within the framework of developed method provides satisfactory accuracy, as well as ease and safety of works in operating electrical installations by voltage 6 kV of auxiliaries of the power station.