A communication state detection method and device for a digital substation

Abstract

The invention discloses a communication state detection method of a digital substation, comprising the steps of: establishing an information transmission circuit diagram between intelligent devices in a digital substation according to the logical relationship between publishing and subscribing of GOOSE messages; The first smart device sends the start time of the GOOSE message, and detects the end time when the second smart device corresponding to the first smart device as the GOOSE message subscriber receives the GOOSE message; calculates the starting time and the end time A difference value, detecting the communication state between the first smart device and the second smart device according to the difference value. The invention can establish an information transmission circuit diagram between intelligent devices in a digital substation without affecting the normal operation of the intelligent devices, and can avoid the detection error caused by the difference between the regular detection and operation of the intelligent devices due to power outages; and it can also Reduce the manpower and material resources that need to be invested.

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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