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首页> 外文期刊>IEEE Transactions on Power Delivery >Development and calibration of a network-based streamingelectrification model for core-form transformer structures
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Development and calibration of a network-based streamingelectrification model for core-form transformer structures

机译：基于网络的铁心形式变压器结构流电模型的开发和校准

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Streaming electrification occurs in large power transformers whennoil circulated for cooling purposes acts to separate charges from thenDebye layer on the cellulose insulation surfaces. This phenomenon isnbelieved to have caused several catastrophic transformer failures andnremains to be satisfactorily understood in realistic geometries. Annetwork-based streaming electrification model is presented whichnutilizes single winding ducts as the basic element to investigate ancore-form structure. The network is first analyzed using hydraulic ductnparameters to calculate the oil flow distributions within the structure.nThis data is then provided to the electrification solver which predictsnthe charge densities at each duct outlet. The charge density results arenultimately used to determine the streaming potentials at each node basednon an a suitable matrix of leakage resistances. Development of thennetwork model is presented along with empirically-based calibration datanfor a realistic section of core-form transformer geometry
机译：当出于冷却目的而循环使用的油起着将电荷与纤维素绝缘表面上的德拜层分离的作用时，大型电力变压器中就会发生流化带电。相信这种现象已经导致了几次灾难性的变压器故障，并且在现实的几何形状中仍未得到令人满意的理解。提出了一种基于网络的流式电气化模型，该模型利用单个绕线管作为研究芯形结构的基本要素。首先使用液压风管参数对网络进行分析，以计算结构内的油流分布。然后将此数据提供给电气化求解器，以预测每个风管出口处的电荷密度。电荷密度结果将最终用于确定每个节点的流电势，而不是基于合适的泄漏电阻矩阵。然后介绍了网络模型的开发以及基于经验的校准数据n，用于磁芯形式变压器几何的实际部分

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