Design and simulation on TCSC analog model and controller

This paper presents the design and simulation test results of an analog TCSC simulator. The TCSC analog model is designed with active compensation in order to minimize the voltage drop on the thyristor when switched on. A detailed description is given about the hierarchical structure and modular hardware of the TCSC controller. The analog experimental results from TNA study show that the TCSC controller is able to implement impedance control, as well as smooth transitions between inductive and capacitive reactance modes. The inner-loop control can damp the oscillations in the LC loop of TCSC therefore it is of benefit for transition from one TCSC operation mode to another. The response speed can be increased if desired. Based on the field conditions, the design and completion is useful to industrial implementation.