Harmonics Temporal Profile in High-Voltage Networks: Case Study

Power System Harmonics - Analysis, Effects and Mitigation Solutions for Power Quality Improvement Pub Date : 2017-12-20 DOI:10.5772/INTECHOPEN.72568

Mohammed H. Albadi, R. Abri, A. A. Hinai, A. Al-Badi

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引用次数: 2

Abstract

This chapter presents a case study about harmonics measurements in high-voltage net- works. Measurements were conducted at two locations in the main interconnected system (MIS) of Oman. Voltage and current THDs were recorded for a period of 1 week. The power quality analyzer was set to record required data for a period of 1 week, and the observation period for each recorded value is 10 minutes. At the first location, the grid station (132/33) is feeding industrial as well as other customers. The second grid station (220/132/33 kV) is dedicated to large industrial customers including arc furnaces and rolling mills. The power quality analyzer was installed at the 132 kV side of power transformers at both locations. Recorded data are analyzed, and temporal harmonics profiles are studied. A clear temporal variation of harmonics similar to that of aggregate load and local voltage profiles was observed at the grid station feeding mixed residential and industrial loads. However, this correlation between system load and harmonics profile diminishes at the grid station dedicated for heavy industrial loads.

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高压电网的谐波时间分布:个案研究

本章介绍了高压电网谐波测量的实例研究。测量在阿曼主要互联系统(MIS)的两个地点进行。电压和电流THDs记录为期1周。电能质量分析仪记录所需数据的周期为1周，每个记录值的观察期为10分钟。在第一个位置，电网站(132/33)正在为工业和其他客户供电。第二个电网站(220/132/33千伏)专门用于大型工业客户，包括电弧炉和轧机。电能质量分析仪安装在两个地点的电力变压器132千伏侧。对记录数据进行了分析，研究了时间谐波分布。在为住宅和工业混合负荷供电的电网站，观察到谐波的明显时间变化，类似于总负荷和局部电压分布。然而，系统负荷和谐波分布之间的这种相关性在专用于重型工业负荷的电网站减弱。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Power System Harmonics - Analysis, Effects and Mitigation Solutions for Power Quality Improvement

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