Determination of available transfer capability by means of Ralston's method incorporating cubic-spline interpolation technique

S. Busan, M. M. Othman, I. Musirin, Azah Mohamed, Aini Hussain

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper presents a fast and accurate method to determine the power transfer so-called the available transfer capability (ATC). The methodology utilizes the cubic-spline interpolation technique that is incorporated into the Ralston's method in order to provide fast and accurate assessment of ATC. The Ralston's method is used to predict the two trajectory points of voltage magnitude (U), power flow (S), and maximum generator rotor angle difference (ÎÎ). Then, the cubic-spline interpolation technique is used to accurately trace the P-U, P-S, or P-ÎÎ curves between two points of trajectory. The P-U, P-S, and P-ÎÎ curves represent as the variations of voltage magnitude, power flow and maximum generator rotor angle difference due to the increase of power transfer or ATC. The actual value of ATC is then determined when either the voltage magnitude limit, power flow limit or generator rotor angle difference limit intersects the curve. The effectiveness of the proposed method is verified by referring to the results of ATC for a case study of 2737-Polish system and 39-New England bus system. The proposed method gives a satisfactorily accurate and fast computation of ATC as compared to recursive AC power flow method.

Original languageEnglish
Pages (from-to)439-464
Number of pages26
JournalEuropean Transactions on Electrical Power
Volume21
Issue number1
DOIs
Publication statusPublished - Jan 2011

Fingerprint

Cubic Spline Interpolation
Splines
Interpolation
Rotors
Power Flow
Electric potential
Trajectories
Rotor
Voltage
Generator
Angle
Curve
Trajectory
Intersect
Trace
Predict
Methodology

Keywords

  • available transfer capability
  • cubic-spline interpolation technique
  • Ralston's method
  • recursive AC power flow

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

Cite this

Determination of available transfer capability by means of Ralston's method incorporating cubic-spline interpolation technique. / Busan, S.; Othman, M. M.; Musirin, I.; Mohamed, Azah; Hussain, Aini.

In: European Transactions on Electrical Power, Vol. 21, No. 1, 01.2011, p. 439-464.

Research output: Contribution to journalArticle

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