高压电器2024，Vol.60Issue(4)：193-198,6.DOI:10.13296/j.1001-1609.hva.2024.04.023
基于复杂网络理论的变电站直流偏磁治理研究
Research on DC Bias Control of Substation Based on Complex Network Theory
摘要
Abstract
For solving the phenomenon of DC bias due to UHVDC transmission,a method for identifying key sites in the transmission-end power grid based on complex network theory under DC bias conditions is proposed.PSCAD is used to set up the autotransformer model and conduct the DC bias simulation study of transformer.In order to control the DC bias existing in the substations in Jiuquan area,the simulation model is set up based on the structure parame-ters of actual grid so to identify and control the critical site which is subjected to the large influence of the bias cur-rent.The concept of node entropy and line entropy is defined of which its size reflects whether the node current and line current distribution in the governed area is uniform,and the DC bias control standard is specified so to judge whether the control effect is qualified.The simulation results show that after identifying and managing the key sites,the node entropy and line entropy have decreased significantly and the total bias current in the area has been effec-tively suppressed.关键词
直流输电/自耦变压器/复杂网络/直流偏磁/站点识别Key words
HVDC/autotransformer/complex network/DC bias/site identification引用本文复制引用
党存禄,马雄文..基于复杂网络理论的变电站直流偏磁治理研究[J].高压电器,2024,60(4):193-198,6.基金项目
国网甘肃省电力科学研究院资助项目(SGGSKY00DJJS1900216). Project Supported by State Grid Gansu Electric Power Research Institute(SGGSKY00DJJS1900216). （SGGSKY00DJJS1900216）
