Optical interconnection-based multi-fpga distributed electromagnetic transient simulation synchronization method, system, device and equipment

By constructing an optical fiber transmission network using optical interconnect technology, the problems of inconsistent data transmission delay and electromagnetic interference in multi-FPGA distributed electromagnetic transient simulation were solved, achieving deterministic synchronization of thousands of nodes and supporting real-time simulation of ultra-large-scale power systems with tens of thousands of nodes.

CN122456618APending Publication Date: 2026-07-24ELECTRIC POWER RES INST CHINA SOUTHERN POWER GRID CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ELECTRIC POWER RES INST CHINA SOUTHERN POWER GRID CO LTD
Filing Date
2026-04-30
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In existing multi-FPGA distributed electromagnetic transient simulations, data transmission through copper cables and backplane buses suffers from inconsistent delays and electromagnetic interference, leading to decreased simulation accuracy and limited scale, making it difficult to support real-time simulation of ultra-large-scale power systems with tens of thousands of nodes.

Method used

The transmission network is constructed using optical interconnect technology, replacing copper cables and backplane buses with optical fiber transmission. Hardware clock recovery and data alignment circuits are designed to achieve global nanosecond precision time reference sharing. A deterministic optical transmission protocol is used for boundary data exchange and synchronization, and a dual-ring redundant optical fiber network with opposite transmission directions is constructed.

Benefits of technology

It solves the problems of inconsistent data transmission delay and electromagnetic interference, achieves deterministic synchronization of thousands of nodes, supports real-time simulation of ultra-large-scale power systems with tens of thousands of nodes, and improves simulation accuracy and reliability.

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Abstract

The application relates to a multi-FPGA distributed electromagnetic transient simulation synchronization method, system, device and equipment based on optical interconnection, which constructs a fiber transmission network for power system simulation through optical fibers, carries out fiber propagation delay processing on the simulation unit of each node in the fiber transmission network to obtain a global time shared by the nanosecond precision time reference of the node, solves the power system simulation data transmission delay problem, carries out clock data recovery and data alignment processing on each simulation unit before the time slot allocation table is obtained, so that the simulation unit realizes cross-clock domain alignment, transmits boundary data needing transmission by taking the global time as a reference and encapsulating the boundary data into fixed format optical transmission frames by using the time slot allocation table, and electromagnetic interference in data transmission is avoided, and the problems of inconsistent delay and electromagnetic interference in data transmission of the present multi-FPGA distributed electromagnetic transient simulation data are solved.
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