APPLICATION OF INTERVAL METHODS TO UNCERTAINTY ANALYSIS OF HVDC TRANSMISSION LINES FIELDS | ||
| The International Conference on Electrical Engineering | ||
| Article 50, Volume 5, 5th International Conference on Electrical Engineering ICEENG 2006, May 2006, Pages 1-9 PDF (112.86 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/iceeng.2006.33633 | ||
| Author | ||
| Mohamed M. Abouelsaad | ||
| Associate professor, faculty of Engineering at Shoubra, Benha University-Cairo-Egypt. | ||
| Abstract | ||
| ABSTRACT Uncertainty is a major issue facing electric utilities in planning and decision making. Modeling uncertainty can be based on two general approaches. The first is a probabilistic approach where probability distributions for all of the uncertainties are assumed. The second approach is called “Unknown but Bounded” in which upper and lower limits on the uncertainties are assumed without probability distributions. Interval mathematics provides a tool for the practical implementation and extension of the unknown but bounded concept. The calculation of HVDC transmission lines fields is used as an example to illustrate the use of interval mathematics. Ground- level electric field values are calculated using the traditional single point numbers as well as interval numbers. Various geometries for monopolar and bipolar dc lines are considered. The values from the two methods are compared to prove the validity of interval analysis to, practically, model uncertainties associated with HVDC transmission lines field analysis. Procedures devised to reduce the width of the resulting interval bounds either through rearranging the governing expressions or through derivation of interval probability are discussed. | ||
| Keywords | ||
| uncertainty; interval mathematics; HVDC Transmission Lines Fields | ||
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