LI Kaibin,CHEN Lei,MIN Yong,et al.Identification Method for Automatic Generation Control Oscillation Mode Based on Ambient Measurements[J].Automation of Electric Power Systems,2022,46(23):76-82.
LI Kaibin,CHEN Lei,MIN Yong,et al.Identification Method for Automatic Generation Control Oscillation Mode Based on Ambient Measurements[J].Automation of Electric Power Systems,2022,46(23):76-82. DOI: 10.7500/AEPS20211212003.
Identification Method for Automatic Generation Control Oscillation Mode Based on Ambient Measurements
Automatic generation control (AGC) oscillations occurred many times in real power grids
which have adverse effects on the safe and stable operation of power systems. In order to provide warning and prevention for AGC oscillations
based on the ambient measurement during the normal operation of power systems
an identification method for AGC oscillation mode is proposed. By using the stochastic subspace method
the system mode identification results are obtained. Considering that AGC oscillation has the characteristics of low oscillation frequency and homologous oscillation of the frequencies all over the grid
the modes except for AGC mode will be weed out
and the clustering algorithm is adopted to obtain the credible
low-error AGC oscillation modes. The proposed identification method of AGC oscillation mode is verified by simulation cases and a real power system. Results show that the proposed algorithm can identify the AGC mode by using the ambient data and has an acceptable identification accuracy
which can be used for the risk assessment of AGC oscillations.
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