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首页> 外文期刊>International Journal of Engineering Research and Applications >Harmonic Analysis of Small Scale Industrial Loads and Harmonic Mitigation Techniques in Industrial Distribution System
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Harmonic Analysis of Small Scale Industrial Loads and Harmonic Mitigation Techniques in Industrial Distribution System

机译：小规模工业负荷的谐波分析及工业配电系统的谐波缓解技术

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摘要

Distribution system is the part of power system consisting of different co mbinations of linear and non-linear loads. The widespread application of power electronics is introducing non-linear loads in the distribution system resulting in the distortion of current voltage waveforms. The objective of this project is to study the harmonic distortion in a typical small scale industrial distribution system and suggest suitable harmonic compensation technique. Various domestic loads such as computer, fluorescent lamp, CFL la mp, fan, air conditioner and small scale industry loads such as adjustable speed drive, arc welder and lift are modeled in PSCAD/EMTDC. These models are then used for harmonic analysis of small scale industrial system. Current and voltage harmonic analysis is performed for standard IEEE 13-Bus medium voltage industrial distribution system by performing simulation using PSCAD/EMTDC. Adjustable speed drive is modelled and used as nonlinear loads and R L loads as static loads. The harmonic distribution is found and THD of volta ge and current is found at all buses. Harmonic mitigation is performed by using single tuned, double tuned and reactance one-port filters. Also, use of shunt and series active filters is made for mitigating harmonics at PCC. Sensitivity analysis is then performed to analyze the effect on harmonic distribution and filter performance at various load conditions, variation in system or transformer or feeder X/R ratio, change in filter positions and effect of power factor correction capacitor.
机译：配电系统是电力系统的一部分，由线性和非线性负载的不同组合组成。电力电子设备的广泛应用是在配电系统中引入非线性负载，从而导致电流电压波形失真。该项目的目的是研究典型的小型工业配电系统中的谐波失真，并提出合适的谐波补偿技术。 PSCAD / EMTDC建模了各种家用负载，例如计算机，荧光灯，CFL笔记本电脑，风扇，空调和小型工业负载，例如变速驱动器，弧焊机和升降机。然后将这些模型用于小型工业系统的谐波分析。通过使用PSCAD / EMTDC进行仿真，可以对标准IEEE 13总线中压工业配电系统进行电流和电压谐波分析。对可调速驱动器进行建模，并将其用作非线性负载，并将RL负载用作静态负载。找到谐波分布，并在所有母线上找到电压和电流的THD。谐波抑制通过使用单调谐，双调谐和电抗单端口滤波器来执行。同样，使用并联和串联有源滤波器来减轻PCC的谐波。然后进行灵敏度分析，以分析在各种负载条件下对谐波分布和滤波器性能的影响，系统或变压器或馈线X / R比的变化，滤波器位置的变化以及功率因数校正电容器的影响。

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