Effective loadflow technique with non-constant MVA load for the Hong Kong Mass Transit Railway Urban Lines power distribution system

C. T. Tse, K. L. Chart, Siu Lau Ho, C. Y. Chung, S. C. Chow, W. Y. Lo

Research output: Journal article publicationConference articleAcademic researchpeer-review


The power distribution systems of the Mass Transit Railway Corporation consist of loads having different voltage dependent characteristics. However, conventional loadflow methods are not adequate for accurate system study and for fast contingency study. A load modelling technique, in which each voltage dependent load is modelled by a Norton equivalent comprising of a 2×2 admittance matrix and a current vector, is introduced in this paper. Because this load model is always tangential to the actual load characteristics and a primitive nodal method can be employed, the proposed technique is easily programmed and converges rapidly. Advantages of the proposed technique will be further discussed with respect to the conventional loadflow methods with constant MVA loads.
Original languageEnglish
Pages (from-to)753-757
Number of pages5
JournalIEE Conference Publication
Issue number450
Publication statusPublished - 1 Feb 1998
EventProceedings of the 1997 4th International Conference on Advances in Power System Control, Operation and Management. Part 1 (of 2) - Hong Kong, Hong Kong
Duration: 11 Nov 199714 Nov 1997

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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