Analysis of Optimal HVDC Back-to-Back Placement Based on Composite System Reliability

Nanang Hariyanto, Niko B. Simamora, Kevin M. Banjar-Nahor and Hendry Timotiyas Paradongan ()
Additional contact information
Nanang Hariyanto: School of Electrical Engineering and Informatics, Bandung Institute of Technology, Bandung 40132, Indonesia
Niko B. Simamora: School of Electrical Engineering and Informatics, Bandung Institute of Technology, Bandung 40132, Indonesia
Kevin M. Banjar-Nahor: School of Electrical Engineering and Informatics, Bandung Institute of Technology, Bandung 40132, Indonesia
Hendry Timotiyas Paradongan: School of Business and Management, Bandung Institute of Technology, Bandung 40132, Indonesia

Energies, 2024, vol. 17, issue 19, 1-26

Abstract: HVDC is a promising interconnection solution for connecting asynchronous systems and ensuring power control. In Indonesia, a remote industrial system in Sumatra is experiencing load growth and has the option to draw power from the Sumatra system. However, due to frequency differences, the use of HVDC is crucial. The Generation Expansion Planning has proposed six converters but not their interconnection points. This study will determine the most reliable interconnection locations. The chosen converters are modular multilevel converters (MMCs) with high modularity. The converter reliability modeling considers voltage levels, the number of modules, and redundancy strategies. This modeling is then implemented at the power system level to obtain the best placement at the available high-voltage (HV) substation options. Determining the best placement is based on the optimal reliability index. The optimal placement also includes the option to convert from HV to medium-voltage (MV) interconnection. MV interconnection offers higher flexibility but tends to be more expensive. The availability for HV converters is 99.69%, while for MV converters, it is slightly higher, at 99.81%. Additionally, converting from HV to MV reduces the SAIFI (system average interruption frequency index) from 0.2668 to 0.2284 occurrences per year, lowering the interruption cost from 7.804 million USD to 5.737 million USD per year. The sensitivity of interruption, investment, and maintenance costs shows that converting at least one HV converter to MV remains economical. In this case study, the optimal converter placement includes Area VI–2, recommended for conversion from HV to a more distributed MV configuration, improving reliability and economic efficiency.

Keywords: cost; high voltage; medium voltage; MMC; reliability; redundancy; placement (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/17/19/5008/pdf (application/pdf)
https://www.mdpi.com/1996-1073/17/19/5008/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:17:y:2024:i:19:p:5008-:d:1494276

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().