基于形态学骨架的变压器差动保护
发布时间：2019-03-06 12:33
【摘要】：改善变压器差动保护的性能长期以来得到较多关注。提出了基于形态学骨架的变压器差动保护新方案,该方案包括两个部分,分别在两个不同的自适应数据窗中计算差动电流波形的形态学骨架,并根据骨架的不同特征来识别内部故障和扰动(励磁涌流、外部故障)。第一部分致力于快速识别大多数内部故障与扰动,而第二部分在一些特殊情况下作为第一部分的后备,确保故障识别的准确性。通过PSCAD/EMTDC仿真与动模实验验证了该方案的快速性与可靠性。
[Abstract]:Improving the performance of transformer differential protection has been paid more attention for a long time. A new scheme of transformer differential protection based on morphological skeleton is proposed in this paper. The scheme consists of two parts, which are used to calculate the morphological skeleton of differential current waveform in two different adaptive data windows, respectively. The internal faults and disturbances (inrush current, external fault) are identified according to the different characteristics of the skeleton. The first part is devoted to the fast identification of most internal faults and disturbances, while the second part acts as the backup of the first part in some special cases to ensure the accuracy of fault identification. The rapidity and reliability of the scheme are verified by PSCAD/EMTDC simulation and dynamic model experiment.
【作者单位】： 华南理工大学电力学院;
【基金】：广东省引进创新科研团队项目(201001N0104744201) 国家自然科学基金青年科学基金资助项目(51607072) 中央高校基本科研业务费面上项目(2015ZM113)~~
【分类号】：TM774
[Abstract]:Improving the performance of transformer differential protection has been paid more attention for a long time. A new scheme of transformer differential protection based on morphological skeleton is proposed in this paper. The scheme consists of two parts, which are used to calculate the morphological skeleton of differential current waveform in two different adaptive data windows, respectively. The internal faults and disturbances (inrush current, external fault) are identified according to the different characteristics of the skeleton. The first part is devoted to the fast identification of most internal faults and disturbances, while the second part acts as the backup of the first part in some special cases to ensure the accuracy of fault identification. The rapidity and reliability of the scheme are verified by PSCAD/EMTDC simulation and dynamic model experiment.
【作者单位】： 华南理工大学电力学院;
【基金】：广东省引进创新科研团队项目(201001N0104744201) 国家自然科学基金青年科学基金资助项目(51607072) 中央高校基本科研业务费面上项目(2015ZM113)~~
【分类号】：TM774
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