Abstract

A load modeling method based on wide area trajectory sensitivity of a power system is presented in this paper. A generator angle as wide area information is used to identify load parameters. Load parameters of wide area identification can fit the dynamic behaviors of a power system more accurately than that of local identification can. Compared with the local-sensitivity of the load parameter, wide-area-sensitivity can reflect the character of power oscillation more clearly. The local sensitivity trajectories of load parameters are obvious only a short time after the disturbance and they are close to zero after about two seconds and can't describe the oscillation character of a power system more clearly. The simulation results proved the feasibility and validity of the wide area load modeling method. It is expected that the method will be used widely in a large scale power system in the future.

Submitted: March 23, 2008 · Accepted: March 24, 2008 · Published: April 23, 2008

Recommended Citation

Guan, Xiupeng; Sun, Yuanzhang; and Cheng, Lin (2008) "A Load Modeling Method Based on Wide Area Trajectory Sensitivity," International Journal of Emerging Electric Power Systems: Vol. 9 : Iss. 3, Article 2.
Available at: http://www.bepress.com/ijeeps/vol9/iss3/art2