Single-ended protection scheme for three-terminal hybrid DC transmission system based on refractive coefficients
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Chuanjian Wu
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Kuan Li
Abstract
Three-terminal hybrid DC transmission technology has the advantages of long-distance and large capacity, and there is no phase change failure and other problems, which is an effective means of sending out new energy bases. Correspondingly, the reliability of the existing single-ended traveling wave protection is further degraded by the unknown fault characteristics introduced by the greater variety and combination of converters and add-ons in the three-terminal hybrid DC transmission system. Therefore, a single-ended protection scheme based on the refractive coefficient is proposed. First, an expression for the refraction coefficient of a three-terminal hybrid DC system is derived. Subsequently, the variability of the refraction coefficients for different faults is analyzed. Finally, a single-ended protection scheme using the fault characteristics of the refraction coefficients is proposed and validated by simulation. The program has the advantages of theoretical clarity, reliability, and the ability to recognize near-end faults.
Funding source: The mechanism and risk suppression of DC commutation failure caused by multiple types of harmonics in the receiving power grid program
Award Identifier / Grant number: 52062623000X
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Research ethics: Not applicable.
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Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Competing interests: The authors state no conflict of interest.
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Research funding: This work was supported by the mechanism and risk suppression of DC commutation failure caused by multiple types of harmonics in the receiving power grid program (52062623000X).
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Data availability: Not applicable.
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© 2024 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
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- Long-distance transmission conductor condition sensing based on distributed fiber optic sensing technology
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- Experimental studies on insulating oils for power transformer applications
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- Power coordination and control of DC Microgrid with PV and hybrid energy storage system
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Artikel in diesem Heft
- Frontmatter
- Research Articles
- Improving islanded distribution system stability with adaptive decision-making framework
- Sensorless control method of induction motors with new feedback gain matrix and speed adaptive law for low speed range
- An improved CB-DPWM strategy with NP voltage balance and switching loss reduction for 3-L NPC converter
- Single-ended protection scheme for three-terminal hybrid DC transmission system based on refractive coefficients
- Long-distance transmission conductor condition sensing based on distributed fiber optic sensing technology
- Data integrity cyber-attack mitigation using linear quadratic regulator based load frequency control in hybrid power system
- Investigation of DG units influence on 66 kV sub-transmission system network considering region load growth: a case study
- Influence of increasing Integration of Solar photovoltaic on Small Signal and Transient stability of Nigeria Power System
- Implementation of SOC-based power management algorithm in a grid-connected microgrid with hybrid energy storage devices
- Experimental studies on insulating oils for power transformer applications
- Power distribution system restoration based on soft open points and islanding by distributed generations
- Power coordination and control of DC Microgrid with PV and hybrid energy storage system
- An investigation on NGR failure in Indian smart cities while replacing the existing overhead lines by underground cables
