Identification of Excitation System under the Environment of Wide Area Measurement

In order to solve the identification of the two-input single-output excitation system model parameters, considering reactive power compensation coefficient based on the wide area measurement system (WAMS), an extended linear integral filter (LIF) method is used in this chapter. By extending the LIF method from the single-input model to the two-input model in excitation system, the global parameters’ identification for two-input single-output excitation system model is achieved. In order to verify the feasibility of the LIF method, an 8 machines and 36 buses power system is utilized. The results demonstrate that the excitation system parameters can be identified by using WAMS environment monitoring data. The LIF method can be used without the limitation of zero initial conditions. Meanwhile, the reactive power compensation coefficient is also obtained.