MODELLING OF COMPACT POWER LINES WITH THE TRIANGULAR ARRANGEMENT OF WIRES

Development of methods and simulars of compact lines of an electricity transmission of the increased capacity. Methods of definition of the modes of electrical power systems (EPS) on the basis of phase coordinates which basis models of elements in the form of trellised equivalent circuits with full-coherent topology are were applied. These models and methods are realized in the program Fazonord-APC complex providing modeling of the EPS stationary modes and also definition of tensions of the electromagnetic field which is created by power lines of various design. Results of modeling of the modes and electromagnetic fields on routes of the compact power line (CPL) of an electricity transmission of 220 kV with a triangular arrangement of wires are presented. For comparison similar calculations for a standard power line (SPL) of 220 kV of a standard design are executed.

Download Full-text

Ortogonale voorstelling van drywing deur middel van kwaternione

Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie ◽

10.4102/satnt.v9i1.433 ◽

1990 ◽

Vol 9 (1) ◽

pp. 11-14

Author(s):

J. H. R. Enslin

Keyword(s):

Power Systems ◽

Electrical Power ◽

Schwarz Inequality ◽

General Definition ◽

General Description ◽

Response Functions ◽

Electrical Power Systems ◽

Vector Calculus ◽

Negative Effect ◽

Definition Of

The increased use of power control equipment resulted in the distortion of the excitation and response functions in power systems from simple sinusoids. These systems resulted in discrepancies in the general definition of power. This distortion has a negative effect on the accurate definition and representation of power in a contaminated power system. The mathematical representation of power with the aid of the theory of quaternions in vector calculus is investigated to obtain a generalized definition of power in all power systems, especially in power systems where the excitation and response functions show non-sinusoidal characteristics. The general description of power is illustrated with the aid of electrical power systems, but is however proposed to be beneficial in all power systems, being mechanical, thermal or chemical. Power is divided into different orthogonal components which describes the energy transfer through a system. The quaternion theory has orthogonal properties which can be used together with the Cauchy-Schwarz inequality to describe the power components using the excitation and respective response functions.

Download Full-text

The Definition of the Acceptable Modes of Electrical Power Systems

Известия высших учебных заведений Электромеханика ◽

10.17213/0136-3360-2016-6-77-81 ◽

2016 ◽

pp. 77-81

Author(s):

Andrey Kryukov ◽

◽

Vladislav Senko ◽

Keyword(s):

Power Systems ◽

Electrical Power ◽

Electrical Power Systems ◽

Definition Of

Download Full-text

Teaching Electrical Power Systems Using Computer Simulations

International Journal of Electrical Engineering Education ◽

10.7227/ijeee.40.1.8 ◽

2003 ◽

Vol 40 (1) ◽

pp. 72-78 ◽

Cited By ~ 1

Author(s):

N. M. Shepstone

Keyword(s):

Differential Equations ◽

Power Systems ◽

Electrical Power ◽

Computer Code ◽

Power Lines ◽

Electrical Power Systems ◽

Transient Behaviour ◽

State Behaviour ◽

Institute Of Technology ◽

Overhead Power Lines

A computer program has been developed at the Manukau Institute of Technology that can be used for teaching and researching short, medium and long overhead power lines. The program makes use of interconnected icons rather than differential equations written in computer code (text). By using programs consisting of graphical icons it is far easier for students to visualise the power line that they are studying and in addition it makes it simple for them to modify and update the program. Until recently it has been difficult to teach overhead power lines in a meaningful way because the equations modelling the transient behaviour of lines are systems of differential equations and the equations modelling the steady-state behaviour are a set of hyperbolic (or exponential) equations. Both these sets of equations are difficult for students to visualise and interpret. Furthermore, overhead line laboratory exercises that produce realistic results for students are very difficult to arrange in most university laboratories. The program developed at Manukau Institute of Technology overcomes these problems.

Download Full-text