Effect of transformer magnetizing current and transformer saturation characteristics of ferroresonance

In the context of modern power systems, transformers hold a pivotal role in the efficient and secure transmission of electrical energy. However, specific operational circumstances can lead to adverse impacts on transformer functionality, with one significant concern being the influence of magnetizing current. Operating a transformer near its saturation point can trigger a phenomenon known as ferroresonance, resulting in pronounced voltage fluctuations and the potential for equipment harm. The primary goals of this project encompass several key aspects. Firstly, the objective is to construct a comprehensive model of the transformer using PSCAD/EMTDC software. Through this model, the intention is to alleviate the repercussions of transformer magnetizing current on its overall performance. Furthermore, the project aims to delve into the saturation characteristics of the transformer during instances of ferroresonance phenomena. The scope of this endeavor involves multiple components. Initially, it entails the creation of a precise model of the transformer to counteract ferroresonance effects. Subsequently, the project encompasses a series of simulations designed to scrutinize saturation characteristics during ferroresonance occurrences. The investigation seeks to establish a correlation between magnetizing current and ferroresonance. The modeling and simulations are carried out within the context of a specific 132/11 kV transmission system. By analyzing the resultant voltage and current waveforms from the models, a clearer understanding of the system's behavior is obtained. The simulation studies reveal noteworthy implications on the magnetizing inrush, ultimately impacting the transformer's saturation. Consequently, the achieved outcomes of this research align with its set objectives. Notably, this research contributes by offering recommendations for enhancing transformer design and operation practices. Additionally, it advances the collective understanding of transformer operation and the intricacies of ferroresonance phenomena. Furthermore, this project fosters collaboration among researchers and industry experts, facilitating the exchange of insights and expertise. In essence, this research endeavor brings valuable insights to transformer optimization and operation, enriching the knowledge base surrounding transformer behavior and ferroresonance phenomena.