Method for diagnosing power system fault considering multi-source data
A power system and fault diagnosis technology, applied in the direction of fault location, etc., can solve problems such as loss, untimely upload, protection and circuit breaker misoperation or refusal to operate, and achieve the effect of improving fault tolerance
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[0020] The power system fault diagnosis method based on multi-source data of the present invention such as flow chart figure 1 shown.
[0021] The following describes the steps of power system fault diagnosis based on multi-source data:
[0022] Step 1. Determine the fault area: According to the circuit breaker displacement information provided by the SCADA system, use the breadth-first method to search and determine the fault area. If the fault area contains only one component, the component is the fault component; if the fault area includes two or above components, go to step 2;
[0023] Step 2, establishing a component fault diagnosis model: constructing a power system fault diagnosis model for components based on the fault electrical quantity criterion, the logical relationship between the fault component and the corresponding protection, and the circuit breaker action, that is, the weighted fuzzy sequential Petri network;
[0024] Step 3, reasoning based on matrix calcu...
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