Title of article
A Novel Method to Increase the Power Capacity of Transmission Lines Using Transformerless Static Synchronous Series Compensator
Author/Authors
Ghorbani, Mohammad Department of Electrical Engineering - Shahid Beheshti University, Tehran , Zarein, Ali Department of Electrical Engineering - Shahid Beheshti University, Tehran , Mosallanejad, Ali Department of Electrical Engineering - Shahid Beheshti University, Tehran
Pages
6
From page
87
To page
92
Abstract
In this paper a transformerless Static Synchronous Series Compensator (SSSC) to increase the power capacity of a 230 kV transmission line is proposed. In order to eliminate the transformer, a 15-level cascade H Bridge (CHB) inverter is employed within the proposed compensator structure to inject reactive power to the transmission line. The theory of instantaneous p-q power using in the compensator is in such a way that allows for the system to be controlled in one phase. However, this method is used with three-phase systems. The proposed control method is also able to balance the voltage of dc-link capacitors at a desirable level. Modulation technique used by the inverter is Phase-Shifted PWM. In order to validate the proposed compensator’s application, a three-phase transmission line is tested by MATLAB software. The transmitted active power of this transmission line is equal to 160 MW. The results obtained from a dynamic simulation are presented. Simulation results indicated 39% increase in the transmitted active power of the line.
Keywords
cascade H bridge multilevel inverter , Flexible ac transmission system (FACTS) , Instantaneous pq theory , static synchronous series compensator (SSSC) , Transformerless
Journal title
Astroparticle Physics
Serial Year
2017
Record number
2491142
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