期刊
IEEE TRANSACTIONS ON POWER SYSTEMS
卷 29, 期 6, 页码 2854-2861出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRS.2014.2316916
关键词
Dynamic power system modeling; parameter estimation; small signal analysis; synchronous generators; wide area measurements
资金
- Engineering and Physical Sciences Research Council (EPSRC), SuperGen FlexNet grant [EP/E04011X/1]
- EPSRC [EP/E04011X/1, EP/G060169/1, EP/H045155/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E04011X/1, EP/G060169/1, EP/H045155/1] Funding Source: researchfish
A novel method for estimating parameters of a dynamic system model is presented using estimates of dynamic system modes (frequency and damping) obtained from wide area measurement systems (WAMS). The parameter estimation scheme is based on weighted least squares (WLS) method that utilizes sensitivities of the measured modal frequencies and damping to the parameters. The paper concentrates on estimating the values of generator inertias but the proposed methodology is general and can be used to identify other generator parameters such as damping coefficients. The methodology has been tested using a wide range of accuracy in the measured modes of oscillations. The results suggest that the methodology is capable of estimating accurately inertias and replicating the dynamic behavior of the power system. It has been shown that the damping measurements do not influence estimation of generator inertia. The method has overcome the problem of observability, when there were fewer measurements than the parameters to be estimated, by including the assumed values of parameters as pseudo-measurements.
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