基于极值估测的哈密电网直流偏磁风险评估方法研究

DC Magnetic Bias Risk Assessment of Hami Power Grid Based on Extreme Value Estimation

评估极端情况下,直流偏磁水平能为防御系统故障风险提供基础。论文提出了基于极值理论的哈密电网直流偏磁风险评估方法:(1)建立高电阻率模型和偏磁电流极值模型;(2)构建了直流偏磁风险评估指标;(3)利用电网实际参数评估哈密电网直流偏磁风险水平。结果验证了评估方法的可行性可有效性。

Assessment for the risk of DC magnetic bias can provide a basis for the defense system failure risk in extreme cases. This paper presents DC magnetic bias risk assessment method of Hami power grid based on extreme value estimation：（ 1 ） to establish high resistivity model and model of extreme value of magnetic current;（2） to construct DC magnetic bias risk assessment index;（3） to assess the DC magnetic bias risk level of Hami power grid using actual parameter of power grid. The assessment method is verified to be feasibility and effectively by this result.