Method and system for evaluating restoration capacity and reliability of power distribution network
A power distribution system and reliability technology, applied in information technology support systems, electrical components, circuit devices, etc., to achieve the effect of improving flexibility, shortening calculation time, and reducing load shedding
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[0126] The IEEE-33 node system is used as the test system, the rated voltage is 12.66kV, the total load is 3.715MW, there are 33 load buses in total, and distributed power is connected to the 15, 22, 25, and 30 load bus positions, and the capacity is 0.5MVA. , it is assumed that after the distribution network fails, the power supply capacity of the main network to the distribution network is limited, which is 1.5MVA.
[0127] It is calculated and solved by the optimization solver that only 1.268MW can be recovered without considering the DG access, and the recovery ratio is 34.1%, so all the power-loss loads cannot be recovered through the isolation fault; under the condition of DG access, such as figure 2 As shown, part of the load can be powered by the distributed power source, but after the line located downstream of the DG fails, the power supply cannot be restored. After the line S30 fails, the optimal microgrid division result is obtained using the above optimization met...
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