基于物理模型的直流用电网电流负载模拟方法  

Simulation method of current load in DC power grid based on physical model

作　　者：王德璋[1] WANG Dezhang(Xinjiang Industry Technical College,Urumqi 830021,China)

机构地区：[1]新疆轻工职业技术学院,新疆乌鲁木齐830021

出　　处：《电子设计工程》2021年第11期35-38,43,共5页Electronic Design Engineering

基　　金：新疆维吾尔自治区社会科学基金一般项目(2014BJYX110);新疆轻工职业技术学院校级课题(XJQG2016T23)。

摘　　要：面对线性负载模拟方法和耗能型电流负载模拟方法未考虑到参考值,导致模拟结果与实际结果存在较大误差的问题,提出基于物理模型的直流用电网电流负载模拟方法。分析直流用电网电流负载拓扑结构,采用数值计算方法,获取电流和电压基准向量值,并模拟负载阻抗,由此可推导出电流参考值振幅和相位。以此作为参考值,确定直流用电网动态性能。分析电流电压波动影响直流用电网质量原因,设计直流用电网电流负载模拟结构。由实验结果可知,该方法模拟结果与实际结果基本一致,误差在允许范围内,具有良好的模拟效果。In order to solve the problem that linear load simulation method and energy consumption current load simulation method do not consider the reference value,which leads to large error between simulation results and actual results,a physical model based current load simulation method for DC power grid is proposed.The current load topology of DC power grid is analyzed.The current and voltage reference vector values are obtained by numerical calculation method,and the load impedance is simulated.The amplitude and phase of current reference value can be derived.As a reference value,the dynamic performance of DC power grid is determined.This paper analyzes the causes of current and voltage fluctuation affecting the quality of DC power grid,and designs the current load simulation structure of DC power grid.The experimental results show that the simulation results of this method are basically consistent with the actual results,and the error is within the allowable range.

关 键 词：物理模型 直流用电网 电流负载 模拟结构 

分 类 号：TM721.1[电气工程—电力系统及自动化]