Online identification method for electromechanical oscillation modal characteristic parameters of electric power system
A technology of power system and characteristic parameters, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of unable to effectively eliminate signal noise, huge amount of calculation, low accuracy, etc., and achieve high practical application value , High recognition accuracy and good applicability
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[0112] Right as figure 2 The shown IEEE 4-machine 2-regional power system performs small-interference online stability analysis. figure 2 Among them, G1, G2, G3, and G4 are the numbers of the four generators, 1, 2, 3, 4, 10, 20, 101, 11, 12, 13, 14, 110, and 120 are the bus numbers of the power system, Areal1 And Areal2 respectively represent two different areas of the 4-machine 2-area system.
[0113] Set the load random fluctuation amplitude to 5% of the original basic value to simulate the environmental excitation of the electric power system, and select the active power from each generator of the electric power system for 10 minutes as the random response signal.
[0114] 1. Use the Small Signal Analysis Stability (SSAT) method to calculate the modal parameters of the power system electromechanical oscillation in different modes. The calculation results are shown in Table 1. The corresponding modal modes of the three electromechanical oscillation modes are as...
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