Method and device for positioning voltage sag source
A technology of voltage sag source and positioning method, applied in directions such as fault location, can solve the problems of high installation cost, single measurement and positioning method, large amount of information, etc., and achieve the effect of cost saving
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[0104] Take Zhangjiakou power grid as an example to verify that the fault location and fault measurement data of monitoring points of the present invention are known. According to the location method of the voltage sag source of the present invention, a fault point standard identification model is established, and the similarity is compared by a similarity formula, and the template with the largest similarity corresponds to the location of the fault point. N fault points correspond to N standard templates, forming a standard template matrix (formulas (4-4)~(4-7)). In order to illustrate the problem, three standard models of known fault points are selected for similarity comparison, so as to point out the location of the fault point.
[0105] Figure 8 It is a specific system wiring diagram of this embodiment, from which the distribution of fault points, monitoring points and other non-measurement points can be clearly seen.
[0106] In the embodiment of the present invention...
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