Parameter configuration method and device of flexible direct current power transmission system, medium and product

By constructing an initial steady-state operating domain and performing discrete sampling and multi-objective optimization, the problem of the coupling relationship between the main circuit and control parameters in the flexible DC transmission system was not considered, which improved the accuracy of parameter configuration and ensured the stable operation of the system under complex operating conditions.

CN122371270APending Publication Date: 2026-07-10GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
Filing Date
2026-03-30
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

In existing technologies for flexible DC transmission systems, the PI parameter tuning method based on single-loop optimization fails to effectively consider the coupling relationship between main circuit parameters and control parameters, resulting in systematic deviations in parameter configuration under transient conditions, which cannot meet the stable operation requirements under complex transient conditions.

Method used

By acquiring network topology and operational data of the AC/DC hybrid power grid, an initial steady-state operating domain is constructed, and the boundary is discretely sampled. Transient simulation and safety constraint rule screening are performed using a simulation model. Combined with multi-objective optimization model optimization, the target main circuit and control parameters are obtained, thereby improving the accuracy of parameter configuration.

Benefits of technology

It improves the accuracy of parameter configuration of flexible DC transmission system, ensures stable operation under complex transient conditions, avoids dynamic problems such as current surges and voltage fluctuations, and realizes complete closed-loop optimization of parameter configuration.

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Abstract

This invention discloses a method, apparatus, medium, and product for configuring parameters of a flexible DC-DC transmission system. The method includes: acquiring network topology data, operational data, and initial main circuit parameters and initial control parameters of the flexible DC-DC transmission system connected to the AC / DC hybrid power grid; constructing an initial steady-state operating domain based on this data, and discretizing its boundaries to obtain multiple boundary operating points; substituting each boundary operating point into a preset flexible DC-DC transmission system simulation model to perform transient simulation under preset disturbance conditions, obtaining transient response data for each point; filtering the transient response data using preset safety constraint rules to obtain transient instability operating points; inputting the transient response data corresponding to the transient instability operating points into a preset multi-objective optimization model, and solving for the target main circuit parameters and target control parameters, thereby using these two data points to configure the parameters of the flexible DC-DC transmission system. This invention can improve the accuracy of parameter configuration for flexible DC-DC transmission systems.
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