A Novel Quad 12-pulse Four-Pole System Using an Existing 12-pulse Bi-pole System for Back-to-Back HVDC System

Mohammed, Sabah Ramadhan; Teh, Jiashen; Jamil, Mohamad Kamarol Mohd

doi:10.1109/appeec.2018.8566674

Cited by 2 publications

(1 citation statement)

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“…This paper is an extension of the work originally presented in the 2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference [1]. The back-to-back system (BTBS) indicates that the converter sides (rectifier and inverter) of the high-voltage direct current (HVDC) transmission are interconnected directly by short bus-bars.…”

Section: Introductionmentioning

confidence: 99%

Upgrading of the Existing Bi-Pole to the New Four-Pole Back-to-Back HVDC Converter for Greater Reliability and Power Quality

2019

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Back-to-back high-voltage direct current systems are used to transfer electrical power between two asynchronous AC systems. The existing bi-pole back-to-back system (2PBTBS) can be converted into the four-pole back-to-back system (4PBTBS) to save in the required infrastructure for proposed installations. This upgrading provides four parallel 12-pulse DC circuits instead of only two 12-pulse DC circuits as in the existing 2PBTBS. The power transfer capability of each DC circuit in the proposed system is 25% of the original system capacity instead of 50% as in the existing 2PBTBS. The reliability of the proposed 4PBTBS is improved twice, and the line-to-line DC voltage levels are reduced to 50% in comparison with the existing 2PBTBS. In this study, the 4PBTBS and existing 2PBTBS are simulated using MATLAB/Simulink. Simulation result shows that the proposed 4PBTBS has four parallel 12-pules DC circuits at lower line-toline DC voltage and higher power quality compared with the existing 2PBTBS. These results validate the performance of the proposed system obtained from upgrading the existing 2PBTBS.INDEX TERMS LCC-HVDC transmission, back-to-back HVDC system, reliability, 6-pulse HVDC converter, 12-pulse HVDC converter.

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Section: Introductionmentioning

confidence: 99%