Electric power system fault diagnosis method based on equivalent input interference method
A technology of power system and interference method, which is applied in the direction of fault location, fault detection according to conductor type, and measurement of electricity, which can solve the problems of long fault diagnosis and low accuracy in power system
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[0045] For illustrating the specific implementation details of the present invention, with IEEE33 node power distribution network (such as figure 1 shown) as an example to illustrate the specific process of fault diagnosis in the present invention.
[0046] Such as figure 2 As shown, a power system fault judgment method based on the equivalent input disturbance method includes the following steps:
[0047] S1. Reasonably stratify the entire power system, and divide groups on the basis of each layer, and divide groups into subgroups, such as image 3 As shown, calculate the equivalent power of each group;
[0048] The layering of the entire power system is determined by the network topology and the logical relationship of each node, and the equivalent power of the group is realized by the power flow calculation of the forward push-back method;
[0049] S2. Construct an equivalent input disturbance observer for each group such as Figure 4 shown;
[0050] The equivalent in...
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