Dynamic Line Rating (DLR)

Schell, Peter

doi:10.1016/b978-0-12-407910-6.00032-6

Cited by 5 publications

(19 citation statements)

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“…To ensure network security, TSO's typically limit the relative DLR capacity to 150% [52] of the SLR capacity. On the other hand, the ENTSO-E reports manageable capacity increases of 100% [15]. To account for this uncertainty, we calculate each limit separately for P max at 130%, 150%, 180%, and 200%.…”

Section: Power System Modelingmentioning

confidence: 99%

Leveraging the Existing German Transmission Grid with Dynamic Line Rating

Glaum¹,

Hofmann²

2023

Preprint

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The integration of large shares of wind and solar power into the power system benefits from transmission network expansion. However, the construction of new power lines requires long planning phases and is often delayed by citizen protests. As an non-invasive alternative, Dynamic Line Rating (DLR) offers the potential to leverage the existing grid by dynamically adjusting the transmission line capacities to the prevailing weather conditions. In this study, we present the first investment model that includes DLR in a large-scale power system with real-world network data and a high temporal resolution. Using Germany as an example, we show that a system-wide integration of DLR improves the integration of existing and additional renewables while reducing grid congestion. The evolving synergies between DLR and increased wind generation result in total cost savings of about 3% of all system costs for a scenario with 80% renewable power production, mainly due to reduced storage and solar capacity needs. If considering a fully decarbonized electricity system, the cost savings from DLR amount to up to 5.5% of the system costs, i.e. 4 billion Euro per year. Our results underscore the importance of a rapid implementation of DLR in power systems to support the energy transition and relieve grid congestion.

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Section: Power System Modelingmentioning

confidence: 99%

Leveraging the Existing German Transmission Grid with Dynamic Line Rating

Glaum¹,

Hofmann²

2023

Preprint

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“…The overhead line (OHL) conductor is vital for reliable and uninterrupted electricity transmission from generation sources to end users. To ensure optimal performance, the conductor is subject to a line rating that defines the maximum allowable temperature without compromising safety and causing premature ageing [1]- [3]. The line rating is essential to maintain proper ground clearance and prevent excessive line sagging, which can lead to arcing and faults [3], [4].…”

Section: Introductionmentioning

confidence: 99%

“…This approach is based on the conductor's heat balance equation and worst-case conditions [6]. The SLR accurately calculates the line rating by considering conservative weather conditions, conductor properties, and load current [1], [3], [4], [7]. The conservative weather conditions, such as low wind speeds (0.446 m/s), full solar radiation (850 W/m 2 ) and high ambient temperature (35 ℃) were Indonesian J Elec Eng & Comp Sci ISSN: 2502-4752  Dynamic line rating for grid transfer capability optimization in Malaysia (Nurul Husniyah Abas) 697 assumed for SLR.…”

Section: Introductionmentioning

confidence: 99%

“…DLR can also help alleviate congestion issues in the transmission network, where power generation plants are concentrated and far from the main load centres [13], [14]. DLR technology has existed for over two decades, but its recent integration into the grid has become feasible due to technological advancement [3]. Several transmission utilities are implementing DLR, including Oncor electric delivery (United States), Amprion (Germany) [15], Terna (Italy), RTE (France) [16], Elia (Belgium) [3], [17], [18] and Vattenfall (Sweden) [19].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic line rating for grid transfer capability optimization in Malaysia

Husniyah Abas,

Zainal Abidin Ab Kadir,

Azis

et al. 2024

IJEECS

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<div align="center"><span>This paper details a case study on the implementation of dynamic line rating (DLR) to enhance the ampacity rating of Malaysia’s grid. Utilizing heat balance equations endorsed by the Institute of Electrical and Electronics Engineering (IEEE 738) and the International Council on Large Electric Systems (CIGRE technical brochure 601), the ampacity rating of a Zebra-type aluminum cable steel reinforced (ACSR) conductor on a 275 kV transmission line has been assessed. Real-time weather conditions and conductor temperatures, measured hourly by the DLR sensor over the course of a year, were incorporated into the ampacity calculation to determine the available margin. The weather parameters were analyzed based on the monsoon seasons. A comparative analysis between various methods outlined in the standards and the estimated ampacity rating derived from both standards is presented. According to both standards, the findings indicate that DLR surpasses static line rating (SLR), highlighting the presence of untapped ampacity for grid optimization. Remarkably, CIGRE TB 601 exhibits a higher ampacity rating margin than the IEEE 738 standard, with a percentage difference of 16.20%. The study concludes that the conductor is underutilized and proposes optimization through the integration of real-time weather conditions data into the heat balance equations.</span></div>

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“…Currency contraction would play havoc with the recovering economy, raise rates, and delay refunding at a lower rate. 111 However, as discussed above, a majority in Congress supported McCulloch's view to focus on currency contraction and gave him authority to act through the Funding Act passed in April 1866. This act, which gave Secretary McCulloch authority to contract the currency, also gave him the power to fund the short-term debt into longer running securities.…”

mentioning

confidence: 99%

Repudiation! The Crisis of United States Civil War Debt, 1865-1870

Noll¹

2012

SSRN Journal

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Dynamic Line Rating (DLR)

Cited by 5 publications

References 0 publications

Leveraging the Existing German Transmission Grid with Dynamic Line Rating

Leveraging the Existing German Transmission Grid with Dynamic Line Rating

Dynamic line rating for grid transfer capability optimization in Malaysia

Repudiation! The Crisis of United States Civil War Debt, 1865-1870

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