基于正弦曲线几何特性的短路试验异常检测算法  

Anomaly Detection Algorithm for Short-circuit Test of Transformer Based on Geometric Characteristics of Sinusoid

作　　者：李洪亮 窦慧 李瑞芬 李海成 陈大伟 LI Hong-liang;DOU Hui;LI Rui-fen;LI Hai-cheng;CHEN Da-wei(Shandong Institute for Product Quality Inspection;Jinan Engineering Polytechnic)

机构地区：[1]山东省产品质量检验研究院 [2]济南工程职业技术学院

出　　处：《中国标准化》2023年第22期178-183,共6页China Standardization

基　　金：山东省标准化战略性重点项目“新能源汽车电池及充电设施关键技术标准战略性重点项目”(项目编号:2022-ZL-06)资助。

摘　　要：针对变压器短路承受能力的验证试验过程中,经常因产品不合格而造成较大损失的情况,本文提出了一种新的基于正弦曲线几何特性的短路试验异常检测算法。算法原理为根据正弦曲线的几何特性,对坐标变换后的电流波形过三点平面的法向量进行平行度比较,从而判断短路电流是否出现异常。仿真结果表明,该算法可快速而高效地检测出短路电流波形中的异常情况,可为短路试验系统进行保护动作提供重要技术基础。In view of the large losses often caused by unqualified products during the verification test of the transformer’s ability to withstand short circuit,this paper proposes a new short-circuit test anomaly detection algorithm which is based on the geometric characteristics of sinusoid.The algorithm principle compares the parallelism of the normal vector of the current waveform passing through the three-point plane after coordinate transformation so as to judge whether the short-circuit current is abnormal.The simulation results show that the algorithm can quickly and effi ciently detect the abnormalities in the short-circuit current waveform,which will provide an important technical basis for the protection action of the short-circuit test system.

关 键 词：变压器 短路试验 正弦曲线 算法 

分 类 号：TM41[电气工程—电器]