Power transformers can be classified into several categories based on their purpose, structure, and other characteristics:According to purpose:Step-up transformer:Increases voltage from low to high levels, enabling efficient long-distance power transmission.Step-down transformer:Decreases voltage from high to low levels, supplying power to local or nearby loads through distribution networks.According to phase number:Single-phase transformerThree-phase transformerAccording to winding arrangement:

1. Abnormal Temperature Rise of the TransformerWhen the transformer's oil temperature or coil temperature exceeds the allowable value during operation, the following steps should be taken to identify the cause and take measures to reduce the temperature:Check the oil temperature and coil temperature that should be present under the load and cooling medium temperature.Check if the temperature displayed on the CRT of the transformer is normal.Check if the cooling device is functioning properly, an

Magnetizing inrush current in electric arc furnace transformers is a problem that troubles many electrical engineers. So, why does magnetizing inrush current occur in arc furnace transformers? First, let's understand what magnetizing inrush current is.Magnetizing inrush current refers to the transient current generated in the secondary winding of an arc furnace transformer due to core saturation, increased magnetic field strength, and other factors. This phenomenon is very common during the oper

In grid-connected photovoltaic (PV) power generation systems, the step-up transformer is a critical component. Optimizing transformer selection to minimize inherent losses and enhance efficiency is essential for improving overall system performance. This article outlines key considerations for proper step-up transformer selection in PV systems.Transformer Capacity SelectionThe required transformer capacity is calculated as: Apparent Power = Active Power / Power Factor. Power factor requirements

At 12:45 on August 4, 2022, a dispatching center received a report from a 100 MW photovoltaic power generation base. It was reported that the incoming line switchgear on the 35 kV low - voltage side of the main transformer at the collection station was on fire, and the protection action tripped. After receiving the notification, relevant personnel went to the site and carried out on - site accident investigation together with the operation technicians. Through on - site inspection, it was found

1 Significance of Selecting and Optimally Designing Wind Turbine Transformers in Wind FarmsAs wind power systems spread, more power transformers are integrated, boosting total equipment capacity and operating losses. Transformers, made mainly from costly silicon steel sheets, copper windings, and foils, are also tough to design. Thus, optimal design and scientific selection are needed to meet technical, national - standard, and user requirements.To ensure stable transformer operation, study thei

1. Brief Introduction to the Photovoltaic Power Generation ProcessThe operation process of photovoltaic power generation is as follows: First, individual solar panels are connected in series to form photovoltaic modules, and the modules are arranged in parallel through combiner boxes to form a photovoltaic array. Solar energy is converted into direct current (DC) by the photovoltaic array, and then converted into three-phase alternating current (AC) through a three-phase inverter (DC - AC). Subs

Currently, the market price of copper remains high, fluctuating in the range of 70,000 to 80,000 yuan per ton. In contrast, the price of aluminum stays low, lingering in the range of 18,000 to 20,000 yuan per ton. For power transformers, replacing copper windings with aluminum windings in design will undoubtedly significantly reduce the material cost of products, bringing substantial cost savings to end customers.For a long time, it has been widely believed in the industry that aluminum windings

1.Environmental Requirements for Transformer Core-Lifting Inspection1.1 General Environmental ConditionsCore - lifting operations are preferably carried out indoors. For large transformers that have to be operated outdoors due to specific conditions, sufficient measures must be taken to prevent moisture and dust contamination.Core - lifting should not be conducted during rainy or snowy weather or when the relative humidity exceeds 75%.The ambient air temperature during core - lifting should not

Power transformers are pivotal components in electrical grids, tasked with voltage conversion to enable efficient electricity transmission and distribution. As global energy demands surge and grid architectures grow increasingly complex, there is an urgent need for advanced transformer technologies that enhance efficiency, minimize environmental impact, and ensure operational reliability. Among emerging innovations, hydrogen-cooled power transformer technology has emerged as a particularly promi