Abstract: Through an analysis of the circuit deployment of current transformer measuring system on the series compensation platform,the noise source and routing of the current transformer measurement system are studied.A new electronic current transformer measuring system is put forward for improving the anti-interference capability.The new system uses locally dispersed acquisition and transmits the sampling data through optical cables,thus eliminating the interference routing.The proposed series compensation system based on the electronic current transformer measuring system has found successful application in some series compensation substations.