Object oriented programming techniques applied to conventional and fast time domain algorithms for the steady state solution of nonlinear electric networks

2005 ◽  
Author(s):  
A. Medina ◽  
A. Ramos-Paz ◽  
R. Mora-Juarez ◽  
C.R. Fuerte-Esquivel
Keyword(s):  
Steady State ◽  
Time Domain ◽  
Object Oriented ◽  
Steady State Solution ◽  
State Solution ◽  
Object Oriented Programming ◽  
Fast Time ◽  
Electric Networks ◽  
Programming Techniques

Fast Time Domain Periodic Steady-state Solution of Nonlinear Electric Networks Containing DVRs

2011 ◽  
Vol 57 (2) ◽  
pp. 105 ◽  
Author(s):  
EdgarO Hernández-Martínez ◽  
Aurelio Medina ◽  
Daniel Olguín-Salinas
Keyword(s):  
Steady State ◽  
Time Domain ◽  
Steady State Solution ◽  
State Solution ◽  
Fast Time ◽  
Electric Networks ◽  
Periodic Steady State

scholarly journals Algorithm for determining two-periodic steady-states in AC machines directly in time domain

2016 ◽  
Vol 65 (3) ◽  
pp. 575-583 ◽  
Author(s):  
Tadeusz J. Sobczyk
Keyword(s):  
Steady State ◽  
Time Domain ◽  
Nonlinear Differential Equations ◽  
Harmonic Balance Method ◽  
Steady State Solution ◽  
Steady States ◽  
State Solution ◽  
Time Interval ◽  
Ac Machines ◽  
Set Of Points

Abstract This paper describes an algorithm for finding steady states in AC machines for the cases of their two-periodic nature. The algorithm enables to specify the steady-state solution identified directly in time domain despite of the fact that two-periodic waveforms are not repeated in any finite time interval. The basis for such an algorithm is a discrete differential operator that specifies the temporary values of the derivative of the two-periodic function in the selected set of points on the basis of the values of that function in the same set of points. It allows to develop algebraic equations defining the steady state solution reached in a chosen point set for the nonlinear differential equations describing the AC machines when electrical and mechanical equations should be solved together. That set of those values allows determining the steady state solution at any time instant up to infinity. The algorithm described in this paper is competitive with respect to the one known in literature an approach based on the harmonic balance method operated in frequency domain.

Response of a Submerged Cylindrical Shell to an Axially Propagating Step Wave

1965 ◽  
Vol 32 (4) ◽  
pp. 788-792 ◽  
Author(s):  
M. J. Forrestal ◽  
G. Herrmann
Keyword(s):  
Cylindrical Shell ◽  
Steady State ◽  
Wave Front ◽  
Transverse Shear ◽  
Shell Theory ◽  
Steady State Solution ◽  
State Solution ◽  
Rotatory Inertia ◽  
Shear Deformations ◽  
Axial Coordinate

An infinitely long, circular, cylindrical shell is submerged in an acoustic medium and subjected to a plane, axially propagating step wave. The fluid-shell interaction is approximated by neglecting fluid motions in the axial direction, thereby assuming that cylindrical waves radiate away from the shell independently of the axial coordinate. Rotatory inertia and transverse shear deformations are included in the shell equations of motion, and a steady-state solution is obtained by combining the independent variables, time and the axial coordinate, through a transformation that measures the shell response from the advancing wave front. Results from the steady-state solution for the case of steel shells submerged in water are presented using both the Timoshenko-type shell theory and the bending shell theory. It is shown that previous solutions, which assumed plane waves radiated away from the vibrating shell, overestimated the dumping effect of the fluid, and that the inclusion of transverse shear deformations and rotatory inertia have an effect on the response ahead of the wave front.

scholarly journals Comparison of Solvers Performance for Load Flow Analysis

2019 ◽  
Vol 3 (1) ◽  
pp. 26 ◽  
Author(s):  
Vishnu Sidaarth Suresh
Keyword(s):  
Steady State ◽  
Power System ◽  
Reactive Power ◽  
Flow Analysis ◽  
Steady State Solution ◽  
Load Flow ◽  
State Solution ◽  
Computational Time ◽  
Load Flow Analysis ◽  
Active And Reactive Power

Load flow studies are carried out in order to find a steady state solution of a power system network. It is done to continuously monitor the system and decide upon future expansion of the system. The parameters of the system monitored are voltage magnitude, voltage angle, active and reactive power. This paper presents techniques used in order to obtain such parameters for a standard IEEE – 30 bus and IEEE-57 bus network and makes a comparison into the differences with regard to computational time and effectiveness of each solver

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