Abstract
The impact of thyristor controlled series capacitor (TCSC) on distance protection relays in transmission lines is analyzed in this paper. Voltage and current data are measured and collected at the relay locations to calculate the apparent impedance seen by distance protection relays in the different operating modes of the TCSC connected to the line. Short-circuit faults which occur at different locations on the power transmission line are considered in order to locate the fault for the purpose of evaluating the impact of TCSC on the distance protection relay. Matlab/Simulink simulation software is used to model the power transmission line with two sources at the two ends. Voltage source, transmission line, TCSC, voltage and current measurement, and discrete Fourier transform (DFT) blocks are integrated into the model. Simulation results show the impact of TCSC on the distance protection relay and determine the apparent impedance and fault location in the line.
Highlights
Flexible alternating current transmission systems (FACTS) based on power electronics have been developed to improve the performance of weak alternating current (AC) systems and to make long distance AC transmission systems feasible [1, 2]
Simulation results show that the firing angle of thyristor controlled series capacitor (TCSC) has an impact on the distance relay A
Modeling for development of simulation tool of impact of TCSC on apparent impedance seen by distance protection relays has been proposed in this study
Summary
Flexible alternating current transmission systems (FACTS) based on power electronics have been developed to improve the performance of weak alternating current (AC) systems and to make long distance AC transmission systems feasible [1, 2]. A model for the development of a simulation tool that analyzes the impact of TCSC on distance protection relay in power transmission lines is necessary. Authors in [10] presented a new protective scheme for transmission lines compensated by TCSC. The objective of this paper is to model and analyze the impact of TCSC on the performance of based protection relays under normal operation and different single-phase to ground fault conditions. According to the simulation results, the apparent impedance seen is calculated to analyze the impact of TCSC to distance protection relay on the line. An appropriate value for capacitance and inductance of a TCSC device is based on the net reactance of the transmission line and expected power demands in future.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Engineering, Technology & Applied Science Research
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
