Power grid equipment physical interaction data processing method and system

By constructing flow description information and worst-case arrival analysis, and generating or adjusting gating schedules, the delay jitter problem of periodic data streams in TSN networks is solved, enabling deterministic and reliable transmission of process layers in smart substations and improving the accuracy of synchronous sampling and relay protection.

CN122340004AActive Publication Date: 2026-07-03JIANGSU ELECTRIC POWER INFORMATION TECH
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Patent Information

Application Number
CN202610797673.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-04
Publication Date
2026-07-03
Estimated Expiration
2046-06-04

AI Technical Summary

Technical Problem

Existing technologies fail to adequately consider various combinations of the periodic data stream transmission cycles and initial phases of multiple smart electronic devices when configuring TSN network gating schedules. This results in critical periodic data streams arriving in a concentrated manner within the same time window, causing message queuing and transmission delay jitter, which affects the accuracy and reliability of synchronous sampling and relay protection in smart substations.

Method used

By constructing flow description information, performing worst-case arrival analysis, generating or adjusting gating schedules, and assigning transmission phase offset parameters to each IED, message transmission delay and jitter are optimized. Adaptive adjustments are made in conjunction with delay measurements to ensure that the transmission capacity of each gating slot covers the maximum data volume and reduce delay jitter.

Benefits of technology

It ensures determinism and reliability of message transmission under any message phase combination, reduces latency jitter, and improves the determinism and reliability of key periodic data streams in the process layer of smart substations, providing a stable communication foundation for high-precision synchronous sampling and fast and reliable relay protection.

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Abstract

The invention provides a power grid equipment physical interaction data processing method and system. According to the method, based on the message sending period and the message length of each intelligent electronic device IED in a process layer, flow description information of each periodic data flow is constructed, based on the flow description information, for each output port in the TSN, worst case arrival analysis is executed, and based on the result of the worst case arrival analysis, the data flow of each periodic data flow is obtained. The method comprises the steps of generating or adjusting a gating time table of each output port in a TSN, distributing and sending a phase deviation parameter to each IED based on the generated gating time table, performing delay measurement on a periodic data stream in a TSN network operation process to obtain delay statistical information, thereby performing self-adaptive adjustment on the gating time table based on the delay statistical information, and improving the reliability of the TSN network. Therefore, the message transmission delay jitter is maintained within the preset upper bound threshold value, and the certainty and reliability of the key periodic data stream transmission of the process layer of the intelligent substation are improved.
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