Protective relaying considerations for transmission lines with high voltage AC cables

Zipp, J.A.; Conroy, Michael; Behrendt, K.; Gallen, T. F.; Hasenwinkle, I.; Hedding, Roger; Horwath, J.; Jacobson, C.A.; Kerrigan, P.; Moskos, G.; Pastore, C.; Rebbapragada, V.; Shroff, D.; Sufana, C.; Taylor, A.; Varneckas, V.; Wiedman, T.E.

doi:10.1109/61.568228

Cited by 21 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The eigenvalues k 1 and k 2 are given from the characteristic equation: det (kI À ZY) = 0. The solution (18) can be expressed by hyperbolic functions as (19) V c ðxÞ ¼ C 1 coshðk 1 xÞ þ C 2 sinhðk 1 xÞ þ C 3 coshðk 2 xÞ þ C 4 sinhðk 2 xÞ V s ðxÞ ¼ C s 1 coshðk 1 xÞ þ C s 2 sinhðk 1 xÞ þ C s 3 coshðk 2 xÞ þ C s 4 sinhðk 2 xÞ ð19Þ The coefficients C i and C s i for i ¼ ð1 À 4Þ depend on voltages and currents available in source substation at the incident moment and the various boundary conditions. Then: @V c ðxÞ @x ¼ k 1 C 1 sinhðk 1 xÞþk 1 C 2 coshðk 1 xÞþk 2 C 3 sinhðk 2 xÞþk 2 C 4 coshðk 2 xÞ @V s ðxÞ @x ¼ k 1 C s 1 sinhðk 1 xÞþk 1 C s 2 coshðk 1 xÞþk 2 C s 3 sinhðk 2 xÞþk 2 C s 4 coshðk 2 xÞ ð20Þ…”

Section: Model Equations Of the Cablementioning

confidence: 99%

“…(14), we calculate the second order differential equation @ 2 V @x 2 and @ 2 I @x 2 ; what gives a solution as (18).…”

Section: Model Equations Of the Cablementioning

confidence: 99%

“…An outside metallic sheath plays at the same time the role of a reference electrode, an evacuating path of the short-circuit current and, eventually, a mechanical protection [1]. This sheath is covered generally with an external synthetic material in extruded polyethylene (black EP) [16][17][18]. The AC current transit creates a magnetic field outside inducing overvoltage within the whole of the close conductors, which are affected by this magnetic field and particularly the metallic sheath.…”

Section: Cable General Descriptionmentioning

confidence: 99%

See 2 more Smart Citations

Fault prelocalization of underground single-phase cables: Modeling and simulation

Aloui

Amar²,

Abdallah³

2013

International Journal of Electrical Power & Energy Systems

View full text Add to dashboard Cite

Section: Model Equations Of the Cablementioning

confidence: 99%

“…(14), we calculate the second order differential equation @ 2 V @x 2 and @ 2 I @x 2 ; what gives a solution as (18).…”

Section: Model Equations Of the Cablementioning

confidence: 99%

Section: Cable General Descriptionmentioning

confidence: 99%

See 1 more Smart Citation

Fault prelocalization of underground single-phase cables: Modeling and simulation

Aloui

Amar²,

Abdallah³

2013

International Journal of Electrical Power & Energy Systems

View full text Add to dashboard Cite

“…Thus, combining double circuit lines with single circuit segment or combining overhead line with cable segments together can influence the performance of the distance functions letting the fault be more distant from its actual point. These effects may consequently lead to unnecessary tripping of the local relay or to undesirable acceleration of the remote one (Zipp et al, 1997). Protective relaying unfortunately, the utilized protective functions with such hybrid lines are typically similar to those used for uniform lines.…”

Section: Introductionmentioning

confidence: 99%

Field Problems of Distance Relays with Combined Single/Double Circuit Transmission Lines

Kawady¹,

Sowilam²,

Shalwala³

2019

J. Eng. Appl. Sci.

View full text Add to dashboard Cite

Parallel transmission lines are characterized with a significant increase in the mutual coupling effects among the different phases of the coupled line segments raising remarkable errors for impedance-based protection equipment in particular. Owing to these situations, the total line impedance of each phase of the associated line may significantly change resulting from the mutually reflected impedances from the other phases. Thus, double line segments, when combined to single circuit ones, can significantly lead to have a deviated measured fault impedance from those parameters that are adjusted during the relaying setting stage. This may, accordingly, cause remarkable errors for distance protection algorithms in the field leading to unnecessary tripping or delayed fault clearing. In this study, the impact of the combination of single and double overhead line segments on the performance of distance relaying function is thoroughly investigated. This investigation is carried out using the Electro-Magnetic Transient Program (EMTP) using distributed parameter line modeling. The accuracy of the developed simulation is validated as compared with a recorded fault case for a 400 kV combined single/double line from the field. This corroborated the correctness and the accuracy of the constructed model. The relay enabled functions and setting are collected and realized in the MATLAB environment. This research is essential for visualizing the core of the problems of these transmission networks with distance function and can consequently help to realize a practical and reliable distance relaying for such lines.

show abstract

Real time prelocalization of underground single-phase cable insulation failure by using the sheath behavior at fault point

Aloui

Amar²,

Derbal³

et al. 2011

Electric Power Systems Research

View full text Add to dashboard Cite

Protective relaying considerations for transmission lines with high voltage AC cables

Cited by 21 publications

References 3 publications

Fault prelocalization of underground single-phase cables: Modeling and simulation

Fault prelocalization of underground single-phase cables: Modeling and simulation

Field Problems of Distance Relays with Combined Single/Double Circuit Transmission Lines

Real time prelocalization of underground single-phase cable insulation failure by using the sheath behavior at fault point

Contact Info

Product

Resources

About