电力系统保护与控制2025，Vol.53Issue(15)：1-12,12.DOI:10.19783/j.cnki.pspc.241399
计及传热效应的配电网弧光接地故障模型及混合消弧方法研究
Research on arc grounding fault model considering heat transfer effects and hybrid arc suppression method for distribution networks
摘要
Abstract
Arc grounding faults(AGF)in distribution networks can trigger protection maloperation and secondary hazards.Existing fault models often fail to accurately represent the dynamic characteristics of arc high-resistance grounding faults(AHGF)due to neglected dielectric breakdown and arc heat transfer effects.Additionally,conventional arc suppression methods exhibit poor adaptability under high-resistance conditions.To address these issues,this paper proposes an AGF model incorporating heat transfer effects and a hybrid arc suppression method.A grounding resistance model is established that integrates dielectric breakdown characteristics with temperature-dependent resistivity.A variable-dimension Mayr-Cassie arc model with thermal coupling is developed.A series-connected hybrid topology combining passive and active arc suppression is designed to reduce active suppression's active power consumption.Finally,experimental and simulation results based on MATLAB/Simulink and real distribution network AGF tests with three typical grounding media(birch,red soil,and concrete)demonstrate that,the proposed AGF model can accurately represent fault characteristics,achieving full-cycle current waveform correlation coefficient of 0.8734～0.9173.The proposed hybrid arc suppression method can effectively and reliably suppress various AHGF faults.关键词
配电网/弧光接地故障/介质击穿/传热效应/混合消弧Key words
distribution network/arc grounding faults/dielectric breakdown/heat transfer effect/hybrid arc suppression引用本文复制引用
蒋冲,范必双,徐向前,黄芸红,王文,喻锟..计及传热效应的配电网弧光接地故障模型及混合消弧方法研究[J].电力系统保护与控制,2025,53(15):1-12,12.基金项目
This work is supported by the National Natural Science Foundation of China(No.52277077). 国家自然科学基金项目资助(52277077) （No.52277077）
