Design method for power system stabilizer capable of suppressing ultra-low frequency oscillation
A technology for power system stability and design method, applied in the direction of reducing/preventing power oscillation, and can solve problems such as no effect and negative effect
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[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0041] Below to Image 6An example of a system is shown to illustrate the invention in detail. The system includes 3 regional power grids, of which area 1 contains 4 power plants, 4 power plants are equipped with different units of 1000MW and 600MW, and the other two areas use equivalent power grids. Area 1 is connected to equivalent grid 1 through 512 kilometers of 1000kV AC lines, and the output power of area 1 is 7000MW. Equivalent grid 1 and equivalent grid 2 are connected through 1000kV AC lines, and the exchange power is 2000MW. See the specific system topology diagram Image 6 shown. The PSS is configured in the system grid, and the equivalent grid 2 is configured with the existing PSS and the new parallel-operated PSS for comparison.
[0042] When a single-phase ground fault occurs at the exit of area 1 and the exit of equivalent power grid 1, the...
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