Efficient numerical solution of the dynamic equations of cables

Watts, A. M.; Frith, Robert

doi:10.1016/0045-7825(81)90063-3

Cited by 2 publications

(3 citation statements)

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“…3). The boundary conditions for these points are (4) where , are the horizontal coordinates of the end points;…”

Section: Finite Differences Modelmentioning

confidence: 99%

“…The initial cable profile is known and may be calculated by one of the static methods (for instance [4]). This profile for cable, which is subjected only to gravity force, is the catenary line.…”

Section: Finite Differences Modelmentioning

confidence: 99%

“…An approach to solution of cable dynamic under short-circuit current using finite difference equations is given in [3] and [4]. Still these equations accumulate calculation errors and give satisfactory results only for short periods of time.…”

Section: Introductionmentioning

confidence: 99%

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Force safety device for substation with flexible buses

Miroshnik

2003

IEEE Trans. Power Delivery

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Short-circuit current sets the design loads for substation structure with flexible buses for voltage up to 115 kV and sometimes for higher voltage. Nonrecoverable force safety device (FSD) being included in flexible buses can restrict the transmission of great unwanted forces to substation portals. The device operates similar to a safety fuse of any electrical device while being replaced when tripped.The paper deals with theoretical investigation of FSD usage efficiency. Two mathematical models (one is to verify another) are built: The first model is based on the finite difference equations and the second one uses ANSYS finite elements program. The finite difference equations are derived by linearization of nonlinear equations of buses motion. Both models include bus conductor, insulators, FSD, portals masses, and portals stiffness. Results of actual calculations that show the efficiency of FSD are presented.

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“…3). The boundary conditions for these points are (4) where , are the horizontal coordinates of the end points;…”

Section: Finite Differences Modelmentioning

confidence: 99%

Section: Finite Differences Modelmentioning

confidence: 99%