Open AccessLook‐up table approaches for TCSC impedance control considering thyristor conduction characteristic
Author(s) -
Yang Yi,
Zhu Xiaojun,
Gao Lei,
Yuan Yubo,
Yao Wei
Publication year - 2017
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2017.0563
Subject(s) - thyristor , electrical impedance , integrated gate commutated thyristor , control theory (sociology) , thermal conduction , table (database) , computer science , control (management) , electrical engineering , materials science , engineering , voltage , artificial intelligence , composite material , data mining
Thyristor‐controlled series capacitor (TCSC) characteristic curves of fundamental frequency impedance change with line current considering thyristor conduction characteristic, which results in experimental deviation when using the open‐loop impedance control. To end this, this study derives the TCSC fundamental frequency impedance mathematic model to reveal the theoretical mechanism that fundamental frequency impedance changes with line currents. This study proposes two new look‐up table approaches to mitigate deviation of the least square look‐up table approach using the three‐point quadratic interpolation and linear interpolation algorithms. The proposed methods have been validated via TCSC physical simulation experiments.