Open Access iconOpen Access

ARTICLE

A Single-Ended Protection Principle for LCC-VSC-MTDC System with High Resistance Fault Tolerance

Dahai Zhang*, Chuanjian Wu, Jinghan He

School of Electrical Engineering, Beijing Jiaotong University, Beijing, 100044, China

* Corresponding Author: Dahai Zhang. Email: email

Energy Engineering 2023, 120(1), 1-21. https://doi.org/10.32604/ee.2022.023304

Abstract

Line-commutated converter-voltage source converter (LCC-VSC) power transmission technology does not have the problem of communication failure very usually. It therefore can support the long-distance, long-capacity transmission of electric energy. However, factors such as topology, control strategy, and short-circuit capacities make the traditional protection principles not fully applicable to LCC-VSC hybrid transmission systems. To enhance the reliability of hybrid DC systems, a single-ended principle based on transmission coefficients is proposed and produced. First, the equivalent circuit of the LCC-VSC hybrid DC system is analyzed and the expression of the first traveling wave is deduced accordingly. Then, the concept of multi-frequency transmission coefficients is proposed by analyzing the amplitude-frequency, and the characteristics of each element. Finally, the LCC-VSCDC system model is built to verify the reliability and superiority of the principle itself. Theoretical analysis and experimental verification show that the principle has strong interference resistance.

Keywords


Cite This Article

APA Style
Zhang, D., Wu, C., He, J. (2023). A single-ended protection principle for LCC-VSC-MTDC system with high resistance fault tolerance. Energy Engineering, 120(1), 1-21. https://doi.org/10.32604/ee.2022.023304
Vancouver Style
Zhang D, Wu C, He J. A single-ended protection principle for LCC-VSC-MTDC system with high resistance fault tolerance. Energ Eng. 2023;120(1):1-21 https://doi.org/10.32604/ee.2022.023304
IEEE Style
D. Zhang, C. Wu, and J. He "A Single-Ended Protection Principle for LCC-VSC-MTDC System with High Resistance Fault Tolerance," Energ. Eng., vol. 120, no. 1, pp. 1-21. 2023. https://doi.org/10.32604/ee.2022.023304



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • 1063

    View

  • 693

    Download

  • 0

    Like

Share Link