UPFC Control Algorithm and Implementation Scheme in Laboratory

This paper introduces the test equipment working principle of the unified power flow controller (UPFC) and states the feedback variables´ choosing for the traditional PI controller of UPFC, then, presents the corresponding control block diagram. After these, this paper proposals a new UPFC control algorithm based on a single nerve cell-adaptive PID control theory, and also presents the corresponding control block diagram; using the digital signal processors implements the hardware platform for UPFC controller in laboratory. In order to compare the control effects using single nerve cell-adaptive PID controller and using traditional PI controller respectively, the three-phase grounding fault and transmission power oscillation simulations are made