Abstract
In this paper, we present a detailed procedure to determine the semiconductor losses for both structures of a shunt STATCOM (Static Compensator), STATCOM based on Current Source Inverter (CSI) and STATCOM based on Voltage Source Inverter (VSI), both used for voltage unbalance compensation. As a first step, we study the VSI-based STATCOM and the CSI-based STATCOM used in high speed railway substations. Then we analyze the design and the sizing of the unbalance compensator in order to obtain an unbalance factor that does not exceed the limits imposed by the standards or by the energy provider. Following that, we compare the performances obtained with both structures VSI-STATCOM and CSI-STATCOM, after calculating the semiconductor power losses in the STATCOM converters. Finally, we validate our approach by simulation over real data of unbalance compensation caused by the new high-speed railway in Morocco. We use the tools MATLAB / Simulink/Simpowersys for performing our simulations.
Highlights
The flexible alternative current transmission system (FACTS) is used in the power grid in order to improve the quality of energy
The railway operator is mainly interested in reducing the compensator size, cost, and the converter losses; this is from where comes our idea to propose a replacement of the voltage source inverter structure by the current source inverter structure
8 Conclusion According to the sizing procedure described in this paper, the use of STATCOM compensator is much more required when daily railway traffic reaches a certain value, especially in rush hours
Summary
The flexible alternative current transmission system (FACTS) is used in the power grid in order to improve the quality of energy. The railway operator is mainly interested in reducing the compensator size, cost, and the converter losses; this is from where comes our idea to propose a replacement of the voltage source inverter structure by the current source inverter structure. To validate this proposition, we show the performances obtained by a CSI-based STATCOM used in the unbalance compensation. We compare and discuss the obtained results for both structures (VSI-based STATCOM and CSI- based STATCOM) using data coming from railway operator in Morocco about the HSR substation This system transmits the energy at 50 kV between the catenary and a complementary cable, called the “negative feeder”. The apparent power and the unbalance factor for HSR substations:
Sign-in/Register to view highlights & summary 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 callDisclaimer: 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.
