Optimal expansion of transformer substations

Journal Article · Mon Nov 01 04:00:00 EST 1982 · IEEE Trans. Power Appar. Syst.; (United States)

DOI:https://doi.org/10.1109/TPAS.1982.317396· OSTI ID:5957702

Saied, M M; ElShewy, H; Fetih, N H

Due to the increasing demand for electrical energy, the transmission capacity of existing power transformer substations must be correspondingly increased to prevent their overloading. This paper represents a new method for the optimal expansion for such substations. The optimized objective function includes the total annual cost of both the original already existing power transformers and the new parallel connected additional transformer. The independent variables for the optimization process are the power rating and the main geometrical dimensions of the new transformer. These variables affect not only the electrical parameters of the new transformer, but also govern the load sharing between the original transformers and the new one. Any condition yielding overloading of either of them is to be excluded. The results will strongly depend on the electrical and magnetic loadings assumed. It is shown that for a certain value of the new transformer core flux density, an absolute minimum for the total substation annual cost exists, whereas increasing the current density will result a monotonous decrease of the objective cost function. The new method is applied to a practical example, and several checks for its validity are given.

• Research Organization: Assiul University
• OSTI ID: 5957702
• Journal Information: IEEE Trans. Power Appar. Syst.; (United States), Journal Name: IEEE Trans. Power Appar. Syst.; (United States) Vol. PAS-101:11; ISSN IEPSA
• Country of Publication: United States
• Language: English

Related Subjects

200300* -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
COST
DEMAND
ELECTRIC POWER
ELECTRICAL EQUIPMENT
EQUIPMENT
EXPANSION
FLUX DENSITY
LOAD MANAGEMENT
MAGNETIC FLUX
MANAGEMENT
OPTIMIZATION
POWER
POWER SUBSTATIONS
POWER TRANSMISSION
TRANSFORMERS