摘要
介绍了一种分析和解决简单电力系统中谐波问题的简单方法.首先在Excel电子表格环境中,输入电力系统的原始数据,然后利用Excel内置函数和VBA编程可以计算出系统不同地点、不同元件的谐波阻抗值,并计算出各次谐波的系统阻抗和时域中各次谐波的电压和电流,从而计算出系统的总谐波畸变率;利用Mat-lab绘出系统阻抗扫描图,可以检测系统的谐振点.利用Excel自动计算的强大功能,可以方便的进行多方案设计计算,研究多种实际因素对总谐波畸变率的影响.
A simple method that can be used to analyse the simple power system harmonic is introduced. Firstly, the harmonic impedance of different devices and equivalent harmonic impedance of system, harmonic voltage and harmonic current in time domain can be calculated, so that the total harmonic distortion of system can be obtained by using Excel inner function and VBA; the resonance point can be inspected easily in the system equivalent impedance diagram drawed by Matlab software. It is convenient to carry through multivariant computation by making use of mightiness automatic computation function of Excel to study how the multi-practicality affect the Total Harmonic Distortion.
出处
《河南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第3期177-179,共3页
Journal of Henan Normal University(Natural Science Edition)
