含谐波线路电压损失的计算

摘要

This paper discusses the voltage loss calculation of the circuit with harmonics as well as the direct impact of harmonics on both line impedance and line calculating current. Based on the analysis on voltage loss percentage per 1A·km of three-phase line with harmonics, Δua% coefficient table at 50 Hz, 150 Hz and 250 Hz is derived respectively to simplify the voltage loss calculation process of the circuit with harmonics. Furthermore, the impact of harmonics on voltage loss calculation is analyzed by means of case analysis and comparison.%探讨含谐波线路的电压损失计算，谐波对线路阻抗和线路计算电流两方面的直接影响。通过分析含谐波的三相线路每1 A·km的电压损失百分数，推导50 Hz、150 Hz、250 Hz时的Δua%系数表，以简化含谐波的线路电压损失计算过程。通过案例分析对比，说明谐波对线路电压损失计算的影响度。