A Cascaded H-bridge Hybrid SVG in LCC-HVDC Applied Research

Aiming at the problem that the current grid commutated converter high voltage direct current (LCC-HVDC) system needs to be equipped with a large number of capacitor banks and AC filter banks, the floor space is too large. The hybrid static var generator (SVG) is proposed to be connected to the AC bu...

Full description

Saved in:
Bibliographic Details
Published in2023 6th Asia Conference on Energy and Electrical Engineering (ACEEE) pp. 199 - 204
Main Authors Deng, Xuening, Jia, Xiufang, Zhao, Chengyong, Shen, Xiaolin, Liang, Chenguang
Format Conference Proceeding
LanguageEnglish
Published IEEE 21.07.2023
Subjects
active filtering
Active filters
Capacitors
cascaded H-bridge SVG
Filter banks
Filtering
Harmonic analysis
Hybrid power systems
LCC-HVDC
Reactive power
reactive power compensation
Online AccessGet full text

Cover

More Information
Summary:Aiming at the problem that the current grid commutated converter high voltage direct current (LCC-HVDC) system needs to be equipped with a large number of capacitor banks and AC filter banks, the floor space is too large. The hybrid static var generator (SVG) is proposed to be connected to the AC bus of the LCC-HVDC system, aiming to achieve the functions of reactive power compensation and harmonic filtering. It can effectively reduce the investment cost. This paper first analyzes the basic working principle of the hybrid SVG based on cascaded H-bridges, and makes a reasonable design of the LC parameters. Then, the reactive current and harmonic current of the system are detected and tracked. On this basis, a coordinated control strategy of the LCC-HVDC system and the hybrid SVG is proposed to stabilize the delivery of DC power. Finally, a simulation model is built in PSCAD/EMTDC for verification.
DOI:10.1109/ACEEE58657.2023.10239617