A goose dual-network communication data processing method and device

Abstract

The application discloses a GOOSE dual-network communication data processing method and device. The method includes: receiving current message data; reading the state serial number and sequence number of the message data; comparing the state sequence number with the reference state sequence number, sequence number and Refer to the sequence number, the recording time and preset value of the restart timer, and the recording time and preset value of the valid information timer, and judge whether the data needs to be updated according to the comparison result; if so, update the valid input data in the message data to data RAM; clears the valid message timer and / or restart timer. In this application, the restart timer and effective information timer can accurately represent the communication status corresponding to the message data, and judge whether the data needs to be updated according to the overall comparison result, which can ensure that the data update is not wrong, and at the same time avoid repeated updates of the same data, which improves GOOSE The accuracy of dual-network communication ensures that the relevant electrical devices do not refuse to operate or malfunction.

Description

technical field [0001] The invention relates to the field of electric power communication, in particular to a GOOSE dual-network communication data processing method and device. Background technique [0002] At present, intelligent substations based on the IEC61850 standard have been widely applied in the field of power systems, mainly through GOOSE dual-network communication to transmit information such as switch positions, failures, interlocking locks, and trips. GOOSE dual-network communication guarantees the reliability of data communication. The stability of communication when the network is abnormal, the accuracy rate of communication under extremely complex network conditions, and the data accuracy rate of the sending device when the device is abnormal can all affect the safety of smart substations. Stable operation. [0003] However, the GOOSE dual-network receiving mechanism currently used uses the sequence number of the newly received frame and the previous frame ...

AI Technical Summary

Problems solved by technology

[0003] However, the GOOSE dual-network receiving mechanism currently used uses the sequence number of the newly received frame and the previous frame to determine whether to receive the message or discard the message. This mechanism can only receive the correct message in a normal communication environment. It cannot accurately identify various abnormal situations and ensure normal data reception. Under extreme conditions, such as the loss of data frames caused by network storms, and the large time difference between packets arriving at different optical ports caused by abnormal switches, etc., the Under the current GOOSE dual-network receiving mechanism, data processing errors may occur. Once the data is wrong, the protection device may refuse to operate or malfunction, which will seriously affect the safety of the power grid.

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