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Keywords = overhead outgoing line protection

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13 pages, 4627 KiB  
Article
Transient Energy-Based Ultra-High-Speed Unit Protection for Overhead Outgoing Lines in Inverter-Interfaced Renewable Energy Plants
by Yuan Kong, Yumeng Wu, Zhenfeng Liang and Rong Jia
Processes 2025, 13(1), 286; https://doi.org/10.3390/pr13010286 - 20 Jan 2025
Viewed by 898
Abstract
The transient fault characteristics of an inverter-interfaced renewable energy (IIRE) overhead outgoing line may cause misoperations of existing protection schemes. This paper uses directional comparison of the post-fault transient energy to construct the ultra-high-speed (UHS) unit protection for an IIRE plant’s overhead outgoing [...] Read more.
The transient fault characteristics of an inverter-interfaced renewable energy (IIRE) overhead outgoing line may cause misoperations of existing protection schemes. This paper uses directional comparison of the post-fault transient energy to construct the ultra-high-speed (UHS) unit protection for an IIRE plant’s overhead outgoing line. The proposed method could identify the internal faults accurately in various fault scenarios. Compared to conventional traveling wave-based protection, distance protection and differential protection, the proposed scheme can overcome the high sampling rate difficulty and remain effective when the fault inception angle is zero. The scheme is also tested under conditions of noise, parallel lines, and CT saturation. The simulation results demonstrate that the proposed method is immune to these factors, which make the scheme more reliable and applicable in commercial industries. Full article
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