Contribution to calculation and established of analytically mutually dependence of Potier and leakage reactance

Abstract

Statement about mutually dependence of Potier reactance value from load regime is analyzed in this paper, as and accuracy corresponding method for determination of generator field current. Proposed procedure accuracy, which is based on loaded machine saturation curve and leakage reactance, is considered. Loaded machine saturation curve is obtained so that to the no-load excitation current values with saturation curve are added corresponding current components due to the rotor addition saturation in load regime. New analytically dependency between of Potier reactance and leakage reactance is reestablished. It is convent that large generators to be characterized with Potier reactance for rated regime, XP,n, especially in regime with high reactive loads.

Keywords

• Potier reactance
• rotor addition saturation
• generator excitation current calculation
• high reactive power regime