基于综合负序分量的变压器转换性故障识别系统  

Transformer switching fault identification system based on comprehensive negative sequence component

作　　者：周少珍 孙雯雯 王吉 付刚 吴明孝 ZHOU Shaozhen;SUN Wenwen;WANG Ji;FU Gang;WU Mingxiao(State Grid Henan Electric Power Company Electric Power Science Research Institute,Zhengzhou 450000,China;State Grid Henan Electric Power Company Maintenance Company,Zhengzhou 450052,China;Henan Jiuyu EPRI Electric Power Technology Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]国网河南省电力公司电力科学研究院,河南郑州450000 [2]国网河南省电力公司检修公司,河南郑州450052 [3]河南九域恩湃电力技术有限公司,河南郑州450000

出　　处：《电子设计工程》2023年第16期116-120,共5页Electronic Design Engineering

摘　　要：针对目前提出的变压器故障识别系统对数据的分类能力较差,无法考虑样本状态,造成故障识别准确率较低的问题,引入综合负序分量,设计了变压器转换性故障识别系统。选择TMS320F2812核心处理器处理得到变压器转换性故障信号,由无源晶体配合DSP完成时钟模块设计,利用RC60000T-J加速度传感器,并配合信号调理器实现转换性故障信号采集。分析转换性故障信号的负序分量,确定初始饱和点,比较变压器转换性故障识别与饱和阈值,判断是否需要启用差动保护解除闭锁,完成故障识别。实验结果表明,设计的系统能够很好地完成故障分类,进而提高转换性故障识别准确率。Aiming at the problem that the current proposed transformer fault identification system has poor data classification ability and can not consider the sample state,resulting in low accuracy of fault identification,a transformer transformative fault identification system is designed by introducing comprehensive negative sequence component.TMS320F2812 core processor is selected to process the transformer conversion fault signal.The passive crystal cooperates with DSP to complete the clock module design.RC60000T-J acceleration sensor and signal conditioner are used to collect the conversion fault signal.Analyze the negative sequence component of the switching fault signal,determine the initial saturation point,compare the transformer switching fault identification with the saturation threshold,judge whether it is necessary to enable the differential protection to unlock and complete the fault identification.The experimental results show that the designed system can complete the fault classification well,and then improve the accuracy of transformative fault identification.

关 键 词：综合负序分量 变压器 转换性故障 故障识别 

分 类 号：TN-9[电子电信]