A method for calculating the critical point of static voltage stability of power system
A static voltage stabilization and power system technology, applied in the direction of power network operating system integration, information technology support system, AC network voltage adjustment, etc.
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[0057] A method for calculating the static voltage stability critical point of a power system, the analysis steps comprising
[0058] 1. In this embodiment, the actual equivalent power grid calculation example of 220kV in Taiyuan is analyzed:
[0059] The simulation software is matlab, and the system wiring diagram is as follows: figure 1 As shown, node 2 is a 3×200MW unit, node 3 is a 4×300MW unit, node 15 is a 600MW unit, and the average total active and reactive loads of the system are 1383MW and 453MVar respectively;
[0060] In the basic operation mode of the system, calculate the initial power flow P 0 , initial voltage U 0 , power factor cosφ i equal to the initial amount;
[0061] 2. Gradually increase the system load, and use the classic cow-pull method to calculate until the system power flow does not converge to the system average load level, increase the load of node 1, node 4, node 11 and node 14, and increase the load of generator sets 2, 3, and 15 at the sam...
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