High Voltage Direct Current (HVDC) electric power transmission systems

Hertem, Dirk Van; Delimar, Marko

doi:10.1533/9780857097378.2.143

Cited by 3 publications

(3 citation statements)

References 9 publications

(5 reference statements)

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“…Both LCC and VSC links can be connected using different network configurations. The DC network topology or configuration selection is mainly influenced by the required level of reliability, rating, cost-effectiveness and complying with local policies and regulations [120].…”

Section: Evaluation Of Hvdc Transmission Configurationsmentioning

confidence: 99%

HVDC Transmission: Technology Review, Market Trends and Future Outlook

Alassi

Bañales

Ellabban

et al. 2019

Renewable and Sustainable Energy Reviews

277

104

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HVDC systems are playing an increasingly significant role in energy transmission due to their technical and economic superiority over HVAC systems for long distance transmission. HVDC is preferable beyond 300-800 km for overhead point-to-point transmission projects and for the cable based interconnection or the grid integration of remote offshore wind farms beyond 50-100 km. Several HVDC review papers exist in literature but often focus on specific geographic locations or system components. In contrast, this paper presents a detailed, up-to-date, analysis and assessment of HVDC transmission systems on a global scale, targeting expert and general audience alike. The paper covers the following aspects: technical and economic comparison of HVAC and HVDC systems; investigation of international HVDC market size, conditions, geographic sparsity of the technology adoption, as well as the main suppliers landscape; and high-level comparisons and analysis of HVDC system components such as Voltage Source Converters (VSCs) and Line Commutated Converters (LCCs), etc. The presented analysis are supported by practical case studies from existing projects in an effort to reveal the complex technical and economic considerations, factors and rationale involved in the evaluation and selection of transmission system technology for a given project. The contemporary operational challenges such as the ownership of Multi-Terminal DC (MTDC) networks are also discussed. Subsequently, the required development factors, both technically and regulatory, for proper MTDC networks operation are highlighted, including a future outlook of different HVDC system components. Collectively, the role of HVDC transmission in achieving national renewable energy targets in light of the Paris agreement commitments is highlighted with relevant examples of potential HVDC corridors.

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Section: Evaluation Of Hvdc Transmission Configurationsmentioning

confidence: 99%

HVDC Transmission: Technology Review, Market Trends and Future Outlook

Alassi

Bañales

Ellabban

et al. 2019

Renewable and Sustainable Energy Reviews

277

104

View full text Add to dashboard Cite

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“…There has been extensive research on the structure and operating principles of MMC-STATCOM in the context of distorted and unbalanced grids. An MMC-STATCOM configuration designed for medium-voltage large-current systems and an extended configuration EMMC-STATCOM tailored for high-power applications are designed in [29]. In [30] introduced an MMC-based D-STATCOM system that effectively compensates for heavily unbalanced nonlinear loads while simultaneously regulating all the floating capacitor voltages.…”

Section: Introductionmentioning

confidence: 99%

Novel DC Capacitor Voltage Balancing Strategy of Modular Multilevel Converter based STATCOM for Reactive Power Compensation and Voltage Improvement

Vadlamudi Naresh

2023

IJRITCC

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In recent years, the integration of renewable energy sources and their unpredictable nature has posed significant challenges to power grid stability and voltage regulation. To address these issues, the Modular Multilevel Converter (MMC) based Static Synchronous Compensator (Statcom) has emerged as a promising solution for reactive power compensation and voltage improvement. However, one critical concern in MMC-Statcom operation is the voltage balancing of DC capacitors, which directly affects system performance and efficiency. In this research, a novel DC capacitor voltage balancing strategy is proposed for MMC-Statcom to ensure optimal operation and enhanced performance. The proposed strategy employs advanced control algorithms and innovative switching techniques to maintain balanced DC capacitor voltages under varying operating conditions. By achieving balanced capacitor voltages, the MMC-Statcom can effectively compensate reactive power and regulate the grid voltage with improved efficiency and stability. The effectiveness of the proposed DC capacitor voltage balancing strategy is extensively evaluated through simulation studies and experimental validations. Comparative analyses are performed with existing voltage balancing methods, demonstrating superior performance and robustness of the novel strategy. The results showcase its potential for practical implementation in real-world power systems. Overall, this study presents a significant advancement in MMC-Statcom technology, providing an effective solution for reactive power compensation and voltage improvement while ensuring reliable and stable grid operation. The proposed novel DC capacitor voltage balancing strategy holds the promise of contributing to the enhancement of power system stability and facilitating the integration of renewable energy sources in modern electrical grids.

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“…On the other hand, the VSC technology changes the direction of the current instead of the voltage that avoids an increased electric field after a voltage reversal within e.g. cable insulations and increases the lifetime thereof [8].…”

Section: Introductionmentioning

confidence: 99%