Active and reactive power control in transmission line with PSO optimized PI controlled five level UPFC

Jayachandra R * and Tulasi Ram Das G

Department of Electrical and Electronics Engineering, Jawaharlal Nehru Technological University, Hyderabad.
 
Research Article
International Journal of Science and Research Archive, 2022, 07(02), 516-531.
Article DOI: 10.30574/ijsra.2022.7.2.0320
Publication history: 
Received on 12 November 2022; revised on 24 December 2022; accepted on 26 December 2022
 
Abstract: 
In this paper, particle swarm optimization (PSO) optimized PI controlled five level UPFC is proposed for a double circuit transmission line. To enhance UPFC performance, a different approach is considered here. It uses simplified power system models to derive the decoupled power controllers, but detailed modeling of the UPFC power converters improves their ride-through capability. This paper introduces decoupled linear UPFC power controllers to obtain the reference ac voltages and currents for the two back-to-back-connected three-phase five-level NPC converters that enforce active and reactive power control in the transmission line. This paper proposes three main contributions to increase the dc-link voltage steadiness of multilevel UPFCs under line faults: 1) decoupled active and reactive linear power controllers; 2) real-time PWM generation; and 3) balancing of dc capacitor voltages. The MATLAB/SIMULINK model for the proposed circuit with PSO-optimized PI controlled five level UPFC is shown here with the results.
 
Keywords: 
Unified power-flow controller (UPFC); Particle swarm optimization; Power flow; Power flow controller; FACTS
 
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