Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

1. Oil-Immersed Self-Cooling (ONAN)The working principle of oil-immersed self-cooling is to transfer the heat generated inside the transformer to the surface of the tank and cooling tubes through natural convection of the transformer oil. The heat is then dissipated into the surrounding environment via air convection and thermal conduction. This cooling method does not require any dedicated cooling equipment.Applicable to: Products with capacity up to 31,500 kVA and voltage level up to 35 kV; Pr

1. How to Judge Whether the Temperature Change of a Transformer is Normal or AbnormalDuring operation, losses in the transformer’s core and windings are converted into heat, causing temperature rise in various parts. This heat is dissipated through radiation, conduction, and other means. When heat generation and dissipation reach equilibrium, the temperature of each part stabilizes. Iron losses remain nearly constant, while copper losses vary with load.When inspecting a transformer, record

From Coils to Current: The Evolution of Transformer EngineeringIn the realm of electrical engineering, few inventions have had as profound an impact as the transformer. It stands as a silent yet indispensable force, enabling the efficient transmission and distribution of electrical power. Delving into the intricate world of transformer engineering, we embark on a journey from the early days of coiled wonders to the current state of advanced technology, witnessing the evolution that has shaped ou

In the realm of electrical engineering, few inventions have had as profound an impact as the transformer. It stands as a silent yet indispensable force, enabling the efficient transmission and distribution of electrical power. Exploring the intricate world of transformer engineering reveals a journey from the early days of coiled wonders to today’s advanced technologies—evolution that has fundamentally shaped modern power systems.The Birth of Coils: Early Transformer OriginsT

Applications and Technological Innovations of Transformers in Renewable EnergyGlobally, the rapid development of renewable energy is reshaping the energy landscape. In this transformation, transformers—critical equipment linking power generation and the grid—play a pivotal role. This article examines their applications and latest technological advancements in renewable energy systems.Basic Functions of TransformersThe primary function of a transformer is to regulate voltage t

Transformer condition maintenance is a systematic engineering effort aimed at ensuring normal and stable operation. By employing technological means to scientifically monitor transformers in operation, collecting, organizing, and analyzing data, it becomes possible to assess future operational status and equipment health, promptly detect minor faults, and enable rapid repairs. This integrated preventive and corrective approach helps reduce economic losses and supports stable economic development

1. What Is a Distribution Transformer?A distribution transformer is a static electrical device in a power distribution system that transfers alternating current (AC) power by transforming voltage and current levels according to the principle of electromagnetic induction.In certain regions, power transformers with voltage ratings below 35 kV—primarily 10 kV and below—are referred to as "distribution transformers." These are typically installed at substations. In general, a dis

The Global Transformer Industry: Trends and OutlookWith rising electricity demand and the global shift toward sustainable energy, the transformer industry is undergoing rapid and transformative changes. These dynamics are driven by technological innovation, renewable energy integration, digital transformation, and evolving global energy governance.Advancing Technological InnovationManufacturers are enhancing transformer performance and efficiency through innovation. Digital, intelligent, and sup

Transformers and Their Role in Enhancing Power QualityTransformers are fundamental components in power systems, playing a critical role in maintaining and improving electrical power quality. Power quality refers to the degree to which electrical energy conforms to defined parameters, including voltage stability, frequency, waveform integrity, and reliability. This article explores the significant contributions of transformers to power quality improvement.Voltage RegulationOne of the primary func

Hazards of Multi-Point Grounding Faults in Transformer CoresDuring normal operation, transformer cores must not be grounded at multiple points. The windings of an operating transformer are surrounded by an alternating magnetic field. Due to electromagnetic induction, stray capacitances exist between the high-voltage and low-voltage windings, between the low-voltage winding and the core, and between the core and the tank.The energized windings couple through these stray capacitances, causing the