A heterogeneous network topology mapping method for off-line and on-line grid data

By decomposing the primary equipment topology network of the power grid into a two-level network and utilizing graph theory and set operations, accurate topological mapping of the offline and online data of the power grid is achieved, solving the problem of insufficient accuracy of power grid simulation analysis in existing technologies and improving the simulation efficiency and accuracy of the power grid operation status.

CN110879913BActive Publication Date: 2025-10-21CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD +1
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Patent Information

Application Number
CN201910601483.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-07-04
Publication Date
2025-10-21
Estimated Expiration
2039-07-04

AI Technical Summary

Technical Problem

Existing technologies cannot achieve accurate network topology mapping between primary devices of offline and online power grid data, especially the connection relationship between bus nodes cannot be one-to-one corresponding, resulting in insufficient accuracy of power grid simulation analysis.

Method used

The topological network of the primary equipment of the power grid is decomposed into two levels. The first level consists of plants and lines, and the second level consists of the primary equipment of each plant. Through the subnet isomorphism algorithm and set operations of graph theory, the topological mapping of the entire network of offline and online data is realized, maintaining the homology and isomorphism of the two-layer network and independent analysis.

Benefits of technology

It improves the efficiency and accuracy of power grid topology analysis, ensures that the primary device nodes of offline and online data correspond to the entire network topology, and realizes accurate simulation of power grid operation status.

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Abstract

The application discloses a heterogeneous network topology mapping method for power grid offline and online data, and has the characteristics that: according to the electrical characteristics of primary equipment of a power grid and inherent characteristics of the power grid, the primary equipment topology network of the power grid is decomposed into two-level networks; the first-level network is composed of power stations and lines, and forms a power station-level topology network; the topology network is homologous and isomorphic, and a subnet isomorphic algorithm of graph theory is applied to topology mapping; the second-level network is composed of primary equipment of each power station, and offline data and online data form topology networks according to the connection relationship between the primary equipment and the primary equipment; the first-level network and the second-level network expand the topology network of the power stations and the lines of the first-level network to the topology network of the primary equipment through the connection relationship of busbars and lines, realize the whole-network topology mapping of the offline and online data, and realize the primary equipment "node corresponding" mapping of the offline data and the online data to the whole-network "topology network" mapping.
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