雷电冲击下变压器绕组电压分布求解模型算法优化设计  

Optimization Design of Transformer Winding Voltage Distribution Solving Model Algorithm Under Lightning Impulse

作　　者：普子恒[1] 冯子灏 王耀强 余欣芸 张明 杨杰 PU Ziheng;FENG Zihao;WANG Yaoqiang;YU Xinyun;ZHANG Ming;YANG Jie(College of Electrical and New Energy,China Three Gorges University,Yichang 443002,China;Naval University of Engineering,Wuhan 430074,China;Hainan Jinpan Electric Research Institute Co.,Ltd.,Wuhan 430074,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]海军工程大学,武汉430074 [3]海南金盘智能科技股份有限公司,武汉430074

出　　处：《电瓷避雷器》2024年第2期81-89,共9页Insulators and Surge Arresters

摘　　要：应用多导体传输线模型(Multi-Conductor Transimission Line,MTL)对变压器绕组电压分布进行仿真计算时,由于输入不同信号对频率分量的要求不同,为提高计算精度需要改变FFT设置,从而导致模型计算量增加,运算效率下降。为此,本研究提出了一种分步计算的方式去控制计算过程中产生的误差,并在此基础上通过分析FFT结果与模型计算结果之间的关系,提出了一种模型算法优化设计,利用曲线拟合的方式,避开繁复的参数矩阵循环运算,直接得到频域下的幅值和相位参数,使整个模型的运算速度得到提升,在保持最大误差仅0.23%的情况下,运算时间缩短74.85%,提升了该模型的工作效率,为工程应用提供便利。When applying the Multi-conductor Transmission Line(MTL) model to simulate and calculate the voltage distribution of transformer windings,due to the different requirements of different input signals for frequency components,the FFT setting needs to be changed to improve the calculation accuracy,resulting in an increase in the calculation amount of the model and a decrease in the operation efficiency.Therefore,the author proposes a step-by-step calculation method to control the error generated in the calculation process,and on this basis,by analyzing the relationship between FFT results and model calculation results,a model algorithm optimization design is proposed,using curve fitting to avoid complex parameter matrix loop operations,and directly obtain the amplitude and phase parameters in the frequency domain,so that the operation speed of the entire model is improved,and the operation time is shortened by 74.85% while maintaining a maximum error of only 0.23%.This improves the efficiency of the model and facilitates engineering applications.

关 键 词：变压器 电压分布 多导体传输线 模型优化 

分 类 号：TM41[电气工程—电器]