中国电机工程学报Issue(5)：1273-1280,8.DOI:10.13334/j.0258-8013.pcsee.2015.05.031
基于模型参数估计技术的输电线路散射特性快速求解
Fast Calculation for Scattering Characteristic of Power Transmission Line Based on Model-based Parameter Estimation Technique
摘要
Abstract
In the research of reradiation interference from power transmission line, the scattered fields of power line on wide frequency band are often calculated by swept-frequency method. Nevertheless, the calculation on wide frequency band of short-wave and above cannot be solved under the existing computer hard ware conditions, because the various algorithms can only calculate one frequency point. In this paper, the model-based parameter estimation (MBPE) technique was proposed to deal with this problem. Firstly, the scattered field information of sampling points were calculated with method of moments (MoM), therefore, the scattering characteristic of power transmission line could be acquired by interpolation fitting. Take the frequency band studied by IEEE and the operating frequency band of AM broadcast radio stations for examples, the scattered fields of sampling points with equally spaced frequency were respectively calculated corresponding to the wire model and the wire-surface model. The Padé rational function was selected to interpolate the variation of scattered field. As a result, the approximate values of scattered fields on wide-band frequency could be quickly predicted. The research shows that, the fitting accuracy of MBPE technique is correlated with the numbers and locations of sampling points, and the maximum relative error for extreme points can be under 4%with appropriate sampling points.关键词
输电线路/无源干扰/散射场/矩量法/基于模型参数估计技术/扫频计算Key words
power transmission line/reradiation interference/scattered field/method of moments (MoM)/model-based parameter estimation(MBPE)/swept-frequency calculation分类
信息技术与安全科学引用本文复制引用
唐波,陈彬,赵志斌,向小民,刘兴发..基于模型参数估计技术的输电线路散射特性快速求解[J].中国电机工程学报,2015,(5):1273-1280,8.基金项目
国家自然科学基金项目(51307098)；新能源电力系统国家重点实验室开放课题(LAPS14016)。Project supported by National Natural Science Foundation of China (51307098) （51307098）
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (LAPS14016) （LAPS14016）
