Method and device thereof for detecting communication state of digital transformer substation

Abstract

The invention discloses a method for detecting the communication state of a digital transformer substation, which comprises the following steps: according to the issuance and subscription logical relationship of a GOOSE message, constructing an information transmission circuit diagram between intelligent equipment in the digital transformer substation; recording the starting time of first intelligent equipment used as an issuance terminal of the GOOSE message for transmitting the GOOSE message and detecting the termination time of second intelligent equipment used as a subscription terminal of the GOOSE message and corresponding to the first intelligent equipment for receiving the GOOSE message; and calculating a difference value of the starting time and the termination time and detecting the communication state between the first intelligent equipment and the second intelligent equipment according to the difference value. The invention can construct the information transmission circuit diagram between the intelligent equipment in the digital transformer substation, does not influence the normal operation of the intelligent equipment and can avoid a detection error caused by a difference in the periodical power failure detection and the operation of the intelligent equipment; moreover, the invention can also reduce manpower and material resources which need to be devoted.

Description

technical field [0001] The invention relates to the field of digital substations, in particular to a communication state detection method and device for digital substations based on the GOOSE mechanism. Background technique [0002] The digital substation takes the primary and secondary equipment of the substation as the digital object. On the basis of the IEC61850 communication specification, the digital information is uniformly modeled, the physical equipment is virtualized, and the standardized network communication platform is adopted to realize the information between intelligent electrical equipment in the substation. Shared and interactive operation, a modern substation that meets the requirements of safe, stable, reliable and economical operation. [0003] Networked smart devices are an important feature of digital substations. Conventional secondary equipment in substations, such as relay protection devices, anti-misoperation locking devices, measurement control de...

AI Technical Summary

Problems solved by technology

However, due to the detection of cable loops in conventional substation detection, it has become network digital flow detection. At the same time, digital communication has brought another problem, that is, how to monitor the network transmission status between smart devices in digital substations. detection

In the prior art, the method of regular detection is adopted, which affects the normal operation of the smart device due to the power outage processing of the detected smart device, and the status (such as working voltage, temperature, etc.) and operation of the smart device after the power failure There will be detection errors in the state, and it will take a lot of manpower and material resources to detect

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