Incorporating the effect of exciter in the transient energy function method

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6123120

Nodehi, K

Traditionally, the Transient Energy Function (TEF) method has used the classical model of the generator which assumes constant voltage behind transient reactance. However, increased use of high initial response exciters has made the task of first swing stability study more complex. Fast response exciters interfere in the first swing, making the classical model not adequate for modeling the generator. In this research, an energy function is obtained to incorporate the effect of exciter in the first swing. The Unstable Equilibrium Points (UEPs) are obtained in the space of rotor angles, direct and quadrature axis internal voltages, and the field voltages. The philosophy of approach was to model the first swing phenomenon, which is an inertial transient, as affected by the exciter, rather than trying to duplicate time solution. This procedure has been simulated on several test power networks for a variety of test conditions. Transient ability is assessed successfully and compares well with time solution results. In situations that exciter alters the mode of instability, obtaining the relevant UEPs and proper assessment becomes difficult and requires further investigation.

• Research Organization: Iowa State Univ. of Science and Technology, Ames (USA)
• OSTI ID: 6123120
• Country of Publication: United States
• Language: English

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