Title :
No-load versus load loss
Author :
MERRITT, STANLEY Y. ; CHAITKIN, STUART D.
Author_Institution :
Merritt & Associates, Bedford, VA, USA
Abstract :
The theory of transformer losses expressed as no-load loss and load loss is briefly reviewed in this article. Mathematical expressions for per-unit loss as a function of load are developed based on rated and actual load. Present value equations are used to express the cost of losses as a function of transformer characteristics, electricity cost, and discount rate. Three methods are presented for expressing the cost of losses in forms that can be used to evaluate bids.
Keywords :
cost-benefit analysis; magnetic leakage; power transformers; actual load; bids evaluation; discount rate; electricity cost; future losses; load loss; no-load loss; per-unit loss; present value equations; purchasing decision; rated load; transformer losses; Aluminum; Conducting materials; Copper; Frequency; Manufacturing; Temperature; Testing; Voltage;
Journal_Title :
Industry Applications Magazine, IEEE
DOI :
10.1109/MIA.2003.1245792
