电力系统自动化2017，Vol.41Issue(23)：68-76,9.DOI:10.7500/AEPS20170111008
基于形态学骨架的变压器差动保护
Morphological Skeleton Based Differential Protection for Power Transformers
摘要
Abstract
Improving the performance of differential protection for power transformers has been drawing lots of concerns of researchers and engineers in the field of power engineering.This paper proposes a novel differential protection scheme based on morphological skeleton (MS) for power transformers.The proposed scheme consists of two parts which are respectively implemented in two adaptive data windows to calculate the MS of differential current waveform.It employs different features of the skeleton points to distinguish internal faults from disturbances (magnetizing inrush current and external fault).The first part aims to identify internal faults and disturbances as soon as possible under most conditions,while the second part acts as a backup of the first part under some extreme conditions so as to ensure the accuracy.The PSCAD/EMTDC simulation and laboratory experiment demonstrate that the proposed scheme is fast and reliable.关键词
变压器差动保护/形态学骨架/自适应数据窗/内部故障/励磁涌流Key words
differential protection of transformer/morphological skeleton/adaptive data window/magnetizing internal fault/magnetizing inrush current引用本文复制引用
曾杰,张禄亮,吴青华..基于形态学骨架的变压器差动保护[J].电力系统自动化,2017,41(23):68-76,9.基金项目
广东省引进创新科研团队项目(201001N0104744201 ) （201001N0104744201 ）
国家自然科学基金青年科学基金资助项目(51607072) （51607072）
中央高校基本科研业务费面上项目(2015ZM113).This work is supported by Guangdong Innovative Research Team Program (No.201001N0104744201),National Natural Science Foundation of China (No. 51607072 ) and Fundamental Research Funds for the Central Universities (No.2015ZM113). （2015ZM113）
