Design and Research of AC Test System for On-Load Tap Changer

摘要

this paper introduces one AC test system for OLTC which is important to transformer。The testing principle of OLTC is presented in this paper and the design of this system is given. The test circuit of including or excluding winding for transition resistance is described, design of AC test system's hardware and software are also shown. Finally, this thesis elaborates experiments that OLTC in normal and fault state to verify this AC test system.