Diversifying transmission planning of wind-heavy systems by incorporating dynamic line rating
Rajendran, Sarangan Yogarathnam, Amirthagunaraj Zhao, Tianqiao Endo, Satoshi Visvakumar, Aravinthan Tamimi, Al Yokley, Charles R. Yue, Meng
Rajendran, Sarangan
Yogarathnam, Amirthagunaraj
Zhao, Tianqiao
Endo, Satoshi
Visvakumar, Aravinthan
Tamimi, Al
Yokley, Charles R.
Yue, Meng
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Time Period
Advisors
Original Date
Digitization Date
Issue Date
2024-11-07
Type
Conference paper
Genre
Keywords
Ampacity,Dynamic line rating,Line utilization,Real-time weather,Static line rating,Transmission planning,Wind energy
Subjects (LCSH)
Citation
S. Rajendrane et al., "Diversifying Transmission Planning of Wind-Heavy Systems by Incorporating Dynamic Line Rating," 2024 56th North American Power Symposium (NAPS), El Paso, TX, USA, 2024, pp. 1-6
Abstract
Expanding electric transmission capacity for renewable energy sources such as wind and solar is essential for decarbonization efforts and meeting increased load demand. This typically requires significant investments in new transmission lines or upgrades to existing ones. However, enhancing the efficiency of current infrastructure can also be highly beneficial. Recently, the use of Dynamic Line Ratings (DLR) has gained significant attention from utilities. DLR allows operators to use lines at their true capacities by considering weather conditions, which can be much higher than the conservative static line ratings. This paper presents a methodology for identifying and implementing DLR on selected lines to enhance capacity and reduce upgrade costs. Line identification is performed using power flow tracing algorithms, where lines carrying more wind power are chosen as candidates for DLR implementation. A criticality score, which is a function of the average wind power flow in the line and the worst-case loading level, is then defined to prioritize the lines that need DLR implementation. The proposed method is tested on a modified system based on the Western Kansas area, with estimated cost savings evaluated. The criticality of these transmission lines during (n-1) contingencies is also evaluated. Additionally, alternative reinvestment strategies for these savings are explored, which show their potential benefits for system security and reliability. © 2024 IEEE.
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Publisher
Institute of Electrical and Electronics Engineers Inc.
Journal
Book Title
Series
56th North American Power Symposium, NAPS 2024
13 October 2024 through 15 October 2024
El Paso
204070