一种基于J-A磁滞模型的变压器在线运行监测方法
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TM734

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湖北省梯级水电站运行与控制湖北省重点实验室开放基金


Transformer online operation monitoring method based on J-A hysteresis model
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2018KJX07

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    摘要:

    变压器由于其特殊的电磁特性,在运行中可能会出现各种隐性且未能触发相关保护的故障,危及设备以及电网的安全稳定运行,文中提出一种基于J-A磁滞模型的变压器在线运行状态监测的方法,目的在于辅助运维人员判断变压器在实际运行中可能会出现的各种故障。首先建立基于J-A磁滞理论的变压器模型,然后采集对实际运行中变压器的相关波形,利用小波变换分析实时工况下变压器时波形与所建立的变压器模型预测波形进行误差校验,通过校验结果来判断变压器是否正常工作,最后,通过仿真实验,验证了所提监测方法的可靠性。

    Abstract:

    Due to its special electromagnetic characteristics, transformers may have various hidden faults that fail to trigger related protection during operation, which will endanger the safe and stable operation of equipment and power grid. This paper proposes a model based on J-A hysteresis. The method of monitoring the online operation status of the transformer is to assist the operation and maintenance personnel to judge various faults that may occur in the actual operation of the transformer. Based on this, this paper firstly establishes a transformer model based on J-A hysteresis theory, and then collects the relevant waveform acquisition of the transformer in actual operation, and uses wavelet transform to analyze the waveform of the transformer under real-time conditions and the error of the predicted waveform of the transformer model established. Verification, through the verification results to determine whether the transformer is working properly, and finally, through the simulation experiments, the reliability of the proposed monitoring method is verified.

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方园,施仁毅,夏家辉,阮建雄,陈锴.一种基于J-A磁滞模型的变压器在线运行监测方法[J].电力工程技术,2019,38(5):177-184

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历史
  • 收稿日期:2019-03-11
  • 最后修改日期:2019-04-17
  • 录用日期:2019-06-30
  • 在线发布日期: 2019-09-30
  • 出版日期: 2019-09-28