Power distribution network fault positioning method based on hierarchical model and intelligent verification algorithm
A distribution network fault and layered model technology, applied in the fields of power supply restoration, distribution network fault location, and isolation, can solve problems such as large computing dimensions, low efficiency, and complex positioning and modeling, and achieve efficiency improvement and reduction The effect of reducing complexity and computing dimension
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[0118] according to Figure 9 Build a distribution line model including wind turbines. The model has a total of 30 feeder nodes and 30 sections. The specific numbers are shown in the figure. S is the main power supply of the system, DG1 and DG2 are wind turbines, and L1 and L2 are inductive loads.
[0119] First, the distribution network is equivalent to a combination of ten two-ports with multi-branch nodes as the boundary, and each two-port contains an area and an area node, and the first-level positioning model is constructed, as shown in Figure 10 shown. Each two-port belongs to the second-layer positioning model, and the section nodes and sections contained in each two-port are shown in Table 1.
[0120] Table 1 Nodes and sections included in the second port
[0121]
[0122] When section 5 of area 3 fails and all distributed power sources are put into operation, the fault direction information of all nodes uploaded by FTU [11111-1-1-1-1-1-1-1-1-1-1 -1-1000-1-1-1-...
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