Multi-fault diagnosis method for railway power distribution network
A technology of multiple faults and diagnosis methods, applied in the fault location and other directions, can solve the problems of the lack of advanced application software at the dispatching end and the failure to fully reflect the functions of railway distribution automation.
Active Publication Date: 2022-03-11
CHINA ROAD & BRIDGE
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[0004]
The purpose of the present invention is to provide a multiple fault diagnosis method of railway distribution network to solve the technical problems in the prior art that the dispatching end lacks advanced application software capable of analyzing faults and the automatic function of railway power distribution has not been fully reflected
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[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0046] Such as figure 1 As shown, the present invention provides a multiple fault diagnosis method of a railway distribution network, comprising the following steps:
[0047] Step 100: Partition the distribution network with the switch as the boundary, establish the distribution control nodes according to the topological network regulation relationship, and establish the distribution regulation tree structure sequentially with the distribution control nodes at...
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The invention discloses a multi-fault diagnosis method for a railway power distribution network. A power distribution control tree diagram is sequentially established for power distribution control nodes according to a central control level of the power distribution network; establishing a fault evaluation model of each power distribution control node, and performing clustering training on fault occurrence by using the fault evaluation model to obtain a fault pre-judgment matrix corresponding to different fault reaction types; determining inherited faults with an inheritance relationship in each power distribution control node according to the occurrence frequency and the fault occurrence time of each fault pre-judgment matrix, and dividing the inherited faults and new faults in each power distribution control node; the inherited fault units with the mapping relation are subjected to secondary splitting, and inherited faults are divided into independent inherited faults and inherited new two-way faults; and generating an ordered multivariate decision diagram of all the power distribution control nodes based on inherited faults of all the power distribution control nodes, and judging current multiple faults. According to the method, the independent inheritance fault, the inheritance new two-way fault or the new fault of each power distribution control node is determined.
Description
technical field [0001] The invention relates to the technical field of distribution network faults, in particular to a method for diagnosing multiple faults of a railway distribution network. Background technique [0002] As an important link in the operation of the railway power system, the railway distribution network is responsible for supplying power to the railway signal system and station auxiliary systems, especially the train operation signal, which is directly related to the safety of railway traffic and plays a vital role in the entire railway system. . Once the railway distribution network fails, it will affect the normal operation of the railway, and in severe cases, it will cause heavy loss of life and property. Therefore, when the railway distribution network fails, it is of great significance to quickly and reliably identify the fault. [0003] For a long time, there has been a lack of effective methods for fault detection of railway distribution networks, ma...
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IPC IPC(8): G01R31/08
CPCG01R31/08Y04S10/52
Inventor 张朝贵郝亮亮
Owner CHINA ROAD & BRIDGE