Temperature Calculation of Overhead Power Line Conductors According to the CIGRE Technical Brochure 207

Kanálik, Martin; Margitová, Anastázia; Urbanský, Jakub; Beňa, Ľubomír

doi:10.1109/epe.2019.8778173

Cited by 7 publications

(2 citation statements)

References 4 publications

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“…2) Conductors: presents the conductor types related to those of the previous sheet, including: main conducting material, crossed-section [mm 2 ], Voltage rating [kV], resistance [Ω/km], reactance [Ω/km], capacitance [nF/km], current rating [kA], short-circuit current rating (SCCR) [kA], type of installation as Over-Head Line (OHL) and Underground Cable (UG). CIGRE recommends to allow overloading coefficients of 115 and 120% for long-(24 h) and short-time (15 min) horizons respectively [26]. However, the SO uses lower values of 105 and 110% due to line length, equipment age, and high temperature of the country.…”

Section: A Topological Datamentioning

confidence: 99%

A Multipurpose Reference System Based on the Hybrid Power Grid of Cape Verde

Pombo

Nguyen

Chebbo

et al. 2022

IEEE Trans. Smart Grid

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Reference systems are key enabling platforms facilitating the evaluation and comparison of different methods and technologies prior to prototyping and field deployment. In the context of the energy transition, where the number and diversity of the grid-related research is ever expanding, we propose a reference system based on two islands of Cape Verde. These isolated power systems capture the behaviour of modern, mid & large size grids ranging from 20 to 100 % renewable energy penetration, accommodating a very diverse technological mix. The topology is based on the real transmission system as of 2021, considers sector coupling and the role of power electronicsinterfaced units. The Open-Access data was provided by the local system operator and the largest renewable utility of the country. The main objective is to enable off-the-shelf usage by minimizing the amount customization required for any possible study. In that way, it is suitable for a range of traditional and modern studies such as: power flow, energy management, control, stability, reliability, resiliency etc. We showcase the usefulness of this reference system with four short studies regarding grid strength, frequency stability, optimal sizing & placement of battery systems and synthetic inertia provision.

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Section: A Topological Datamentioning

confidence: 99%

A Multipurpose Reference System Based on the Hybrid Power Grid of Cape Verde

Pombo

Nguyen

Chebbo

et al. 2022

IEEE Trans. Smart Grid

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“…• (15 min) horizons[25]. However, Electra is forced to use lower values due to the age of the equipment, the general long distance of the lines that would unavoidably cause voltage drops, and the generally elevated temperature of the country.• Transformers: presents type ID, size [MVA], voltage rating [kV], positive and zero sequence of resistance and reactance in per-unit (p.u.…”

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confidence: 99%

The Islands of Cape Verde as a Reference System for 100% Renewable Deployment

Pombo

Bindner

Sørensen

et al. 2021

2021 IEEE Green Technologies Conference (GreenTech)

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Fully renewable, isolated power systems have gained relevance given the global agenda related to the energy transition. Thus raising the amount and diversity of the performed gridrelated research. However, the existing generic reference systems are usually aimed to a particular type of study and don't capture the influence of technologies and methods used to accommodate renewables such as power electronics, energy storage, demand response, etc. In addition, the majority of studies are focused on the micro-grid perspective. When analyzing grids, size does matter, and yet, there is no benchmark available suitable for validating both static and dynamic studies in the dozens to hundreds of MW range. Therefore, there is a need for a reference system capturing the behaviour of modern, mid & large size isolated power systems ranging from 20 to 100 % renewable energy penetration, accommodating a very diverse technological mix. The purpose of this work is to fill these gaps, presenting a benchmark suitable for studies in mid to large size power system using real data from existing isolated grids. The network of two islands from Cape Verde is used as inspiration for the models due to the relevance of their layout and configuration, but also the country's renewable penetration targets. All the data has been provided by Electra and Cabeólica, the local System Operator and largest renewable utility of the country respectively. The data is Open-Access, accessible in an online repository [1], conveniently prepared and presented in different tables and files covering a range of traditional and modern studies such as: power flow, energy management, control, stability, reliability, resiliency etc.

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