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Analytical formulation of overhead transmission lines loadability characteristics
2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2018This paper deals with the loadability characteristics of overhead transmission lines (OHLs). The target is to provide a general analytical formulation of the loadability characteristics of uncompensated OHLs. This is a completely new approach: no previously published work has adopted an analytical approach to characterize the different regions of the ...
Lauria, Davide, Quaia, Stefano
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Optimum compensation to improve line loadability
Electric Power Systems Research, 1990Abstract This paper presents ‘optimum compensation requirement’ (OCR) curves to select the optimum series and shunt compensation to be employed for different loading conditions of EHV AC transmission systems. The OCR curves enable improvements to be made to the system loadability from the points of view of compensation effectiveness, total ...
G.Durga Prasad +4 more
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Loadability curves for the new Terna's “5F” high capacity overhead lines
2023 IEEE International Conference on Environment and Electrical Engineering and 2023 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe), 2023Terna, the Italian Transmission System Operator, has recently introduced a new generation of HV and EHV lines (the so-called '5-phases' or 5F) allowing for a substantial reduction of EMF population exposure and increase of power transfer capacity, if compared to conventional OHL.
Guarniere M. R. +7 more
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Online transmission line loadability assessment using synchrophasor measurements
2013 North American Power Symposium (NAPS), 2013This paper proposes a measurement-based method to assess transmission line loadability, particularly when determined by stability constraints. A power system two-area equivalent model provides the basis for the proposed line loadability assessment method, with the angle across this equivalent model defining a metric of the closeness to the system ...
Jiangmeng Zhang +2 more
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Relay loadability challenges experienced in long lines
2016 69th Annual Conference for Protective Relay Engineers (CPRE), 2016As discussed throughout this paper, the employment of load encroachment and OOS blinders make it difficult to ensure that the relay will operate for symmetrical faults when these two functions are enabled and still comply with the standard. The use of current differential relays solves this issue when these type of relays are available.
Seunghwa Lee, Joe Perez
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Comparison between single-circuit overhead transmission lines based on line costs and loadability
International Symposium on Power Electronics Power Electronics, Electrical Drives, Automation and Motion, 2012Previous papers by the same authors have compared traditional and alternative solutions for single-circuit overhead transmission lines, by considering three-phase AC lines as the former, non-conventional four-phase AC lines and monopolar HVDC lines as the latter.
D. Lauria, MAZZANTI, GIOVANNI, S. Quaia
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Loadability of 400 kV four-bundled overhead transmission lines
2015 International Conference on Clean Electrical Power (ICCEP), 2015The transmission capacity of high voltage overhead power transmission lines (OHLs) can be increased in different ways. One of these is to increase the number of standard ACSR (Aluminium Conductor Steel Reinforced) conductors forming the bundles of OHLs.
LAURIA, DAVIDE, Quaia, S.
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Comparative analysis of overhead power transmission lines based on loadability characteristics
2011 International Conference on Clean Electrical Power (ICCEP), 2011The loadability curves of different types of overhead transmission lines are computed and compared in this paper, for line length up to 500 km. The considered solutions are: traditional three-phase single and double circuit ac lines, four-phase ac lines, monopolar and bipolar HVDC lines and combined ac-dc lines.
D. Lauria, MAZZANTI, GIOVANNI, S. Quaia
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The Loadability of Overhead Transmission Lines—Part I: Analysis of Single Circuits
IEEE Transactions on Power Delivery, 2014This paper provides a methodology for a thorough technical comparison between traditional three-phase ac lines, on the one hand, and possible (in some cases non-conventional) alternative solutions that include HVDC lines, four-phase ac lines and combined ac-dc lines, on the other.
D. Lauria, MAZZANTI, GIOVANNI, S. Quaia
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Online Valuing the Loadability of Transmission Line
Journal of Information and Computational Science, 2013Based on dynamic thermal rating technologies and taking into account of voltage drop and steady-statestability limitation, the model and algorithm of online valuing loadability of transmission line under operation are established. Considering the generator units voltage regulation characteristics, the variable parameter dual-port Norton equivalent ...
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