Fault location method of process layer network communication in smart substation based on proof table

Abstract

The invention discloses an intelligent transformer substation process layer network communication fault locating method based on a list of proof. The intelligent transformer substation process layer network communication fault locating method includes analyzing an SCD file to acquire physical port information, virtual terminal information and communication link alarm information of an equipment process layer, acquiring physical communication links corresponding to logical communication links of the equipment process layer through a topology search algorithm, integrating the logical communication links with the corresponding physical communication links to generate the list of proof of process layer communication faults, writing logical communication link alarm values into the list of proof of process layer communication faults to complete the fault proof process, counting values of proof of physical fault nodes and taking the physical fault node with the maximum value of proof as a fault locating result. According to one-to-one correspondence relation between the physical communication link fault nodes and the logical communication links of the equipment process layer, the fault nodes are proofed through fault-less communication links and the fault communication links, so that the node which is most possible to be in fault is located to facilitate improvement of intelligent transformer substation network running maintenance level.

Description

technical field [0001] The invention relates to an intelligent substation process layer network communication fault location method based on a proof table, and belongs to the technical field of electric power automation. Background technique [0002] The intelligent substation based on IEC61850 adopts Ethernet as the communication network of the substation, and its automation system is logically divided into a three-layer architecture of station control layer, bay layer and process layer. Equipment (IED), the process layer equipment includes intelligent terminals, merging units and other IEDs that interface with primary equipment. The three-layer equipment communicates through the station control layer network and the process layer network. Among them, the station control layer and the bay layer equipment use Manufacturing Message Specification (MMS) communication on the station control layer network, and the bay layer and process layer equipment communicate with each other....

AI Technical Summary

Problems solved by technology

[0004] Equipment physical link failures can be divided into sender equipment failures, receiver equipment failures, and transmission physical channel failures. Usually, nodes such as equipment, boards, ports, and optical fibers in the physical link may be fault points. Substation equipment There are hundreds of logical links in the process layer, and there are many possible failure points in the physical link corresponding to each logical link. In addition, the physical channel and the logical link have a one-to-many relationship, that is, a physical channel may carry If there are multiple logical links, one fault point of the physical channel may cause multiple logical links to fail at the same time, which increases the difficulty of direct fault location

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