1991
DOI: 10.1109/61.85869
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Overvoltage studies for the St. Lawrence river 500-kV DC cable crossing

Abstract: An extensive Insulation coordination study has been conducted for the 500-kV d.c. cables that will be installed in a tunnel under the St.-Lawrence river. These cables wUI be part of the Radisson-Nicdet section of the Quebec-New England HVDC line. This paper provides an overview of the studies and the phenomena that wUI cause decisive overvoltage stresses on the cable insulation. The basic assumptions and the simulations of these phenomena with the DCG/EPRI-released Electromagnetic Transients Program (EMTP) are… Show more

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Cited by 14 publications
(14 citation statements)
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“…of the system voltage, and the following protective characteristics will be employed if the voltage inside the unprotected cable exceeds 2.25 p.u. [6].…”
Section: Surge Arrestermentioning
confidence: 99%
See 1 more Smart Citation
“…of the system voltage, and the following protective characteristics will be employed if the voltage inside the unprotected cable exceeds 2.25 p.u. [6].…”
Section: Surge Arrestermentioning
confidence: 99%
“…Many researchers have studied the impact of lightning strikes on mixed transmission lines since the 1990s and several resulting articles have attempted to address various aspects of lightning transients in mixed HVDC as well as HVAC lines [6][7][8][9][10][11][12][13][14][15][16]. Many of these studies focused on specific design aspects such as the shunt reactor on cable terminal, presence of surge arrester/sheath voltage limiter, OHL geometries and tower footing impedance.…”
Section: Introductionmentioning
confidence: 99%
“…A decrease in overvoltage magnitude is noticed with increasing number of system feeders. This is as expected since increasing the number of feeders having the same characteristic impedance allows the travelling voltage waves to divide equally at the junction points [9]. The maximum overvoltage recorded is 24 times the normal phase to ground voltage and it is only 4.0% of the total cases.…”
Section: A Evaluation Of Surge Voltage Level Due To Directmentioning
confidence: 78%
“…The 500 kV, 2000 mm 2 single core cable with layout shown in Figure 2a is based on [25]. The structure, dimensions and electrical parameters of cable used in PSCAD model are shown in Figure 2b.…”
Section: Cable Modelmentioning
confidence: 99%
“…It has been successfully applied in three phase AC cables to suppress circulating currents in the sheaths [11,[21][22][23]. In DC cables, sheath grounding at terminals is applied to suppress the sheath voltage in [7,[24][25][26]. However, the steady state sheath voltage and losses have not been discussed by any of these papers.…”
Section: Introductionmentioning
confidence: 99%