Analysis Magnetization Current of Harmonic Phenomena and Power Factor as Indicators of Core Saturation at Transformer 3-Phase
Analysis Magnetization Current of Harmonic Phenomena and Power Factor as Indicators of Core Saturation at Transformer 3-Phase作者机构：Electrical Engineering Department Faculty of Engineering Universitas Muhammadiyah Jakarta Jakarta Indonesia Mechanical Engineering Department Faculty of Engineering Universitas Muhammadiyah Jakarta Jakarta Indonesia
出 版 物：《Journal of Power and Energy Engineering》 (电力能源（英文）)
年 卷 期：2016年第4卷第5期
页 面：1-6页
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学]
主 题：Core Saturation Magnetization Current Harmonic
摘 要：Saturation is a condition in which the magnets are fully transformer cores and generate maximum magnetic flux. Some parts affect the resilience and create distortions that can harm the heart. Core saturation can also increase the temperature and magnetization current transformer. In this study, we proposed a measurement method to obtain the necessary parameters to calculate a reliable indicator of the state of the transformer core saturation. The main effects of nonlinear flow in the transformer core are saturation, eddy current and hysteresis. In saturation, the core transformer is as a source of generating harmonic currents, some of which will flow directly to the primary and secondary windings. The method is based on the magnetization current, the phenomenon of harmonics and power factor is evaluated by measuring the no-load current at three-phase transformer, with a high magnetic flux density imposed. Measurements were taken at each phase of the transformer core. The transformer is connected to a variable voltage variable frequency (VVVF) as a voltage source and the investigation carried out at various flux densities. The results showed that the magnetization current and harmonic phenomena increased significantly when the high magnetic flux density and vice versa injected with power factor declined sharply. This phenomenon can be used as an indication of saturation of the 3-phase transformer core.
维普期刊数据库