Improvements and use of WASP for special applications

The WASP program is being used in the Israel Electric Corporation (by the R and D division) since 1978 as a useful tool for decisions concerning the long range development of the generation system. Some problems encountered in various studies performed during the last ten years using the version WASP-II necessitated the introduction of several changes. Some of these changes appeared already in the WASP-III version, therefore they are not treated in the paper. Other changes, which may be of interest to WASP users, are presented in this paper. In addition, an improved procedure concerning the loading order of generating units is suggested. Examples of the use of WASP for special applications are also included encompassing the following subjects: - Break-even cost calculation for a pumped storage plant; - Determination of a reliability criterion for expansion of the power generating system; - Long run hourly marginal generating cost calculations for time of day pricing; and finally, - Uncertainty considerations, including: a) cost of over versus under expansion, b) nuclear versus coal expansion plans and c) optimal in-service date for power stations. (author). 9 figs, 5 tabs