Unlock the transformer loss code

In the modern power system, the transformer plays an indispensable role, it is like the "heart" of power transmission, responsible for voltage conversion of electric energy to meet the needs of different users. High-voltage electricity output from power plants is reduced by transformers before it can safely enter factories, shopping malls and homes. However, in this seemingly simple voltage conversion process, there is a problem that cannot be ignored - transformer loss.

Transformer loss, like the invisible "killer" in the process of power transmission, silently consumes a large amount of electric energy. These losses not only reduce the operating efficiency of the power system, increase energy costs, but also cause a certain pressure on the environment. Therefore, a thorough understanding of the types and causes of transformer losses is of great significance for improving the efficiency of power systems and reducing energy consumption.

Core loss: The "heartbeat" of the transformer

Core loss, also known as iron loss, is the energy loss generated by the iron core during the operation of the transformer, just like the human heartbeat, as long as the transformer is connected to the power supply, the core loss is like a shadow.

The core loss is a fixed loss, which is independent of the size and nature of the load current, just like a fixed "energy consumption base". However, it is very sensitive to changes in voltage and frequency. When the voltage increases or the frequency increases, the magnetic field in the core changes more violently, and the hysteresis loss and eddy current loss will increase, resulting in an increase in core loss.

Copper loss: The "friction" cost of current and resistance

Copper loss, also known as winding loss, refers to when the current flows through the transformer winding, due to the existence of winding resistance, electrical energy is converted into heat energy loss, just like the energy loss caused by the friction between the tire and the ground when the car is driving.

In order to reduce copper loss, in the selection of materials, the selection of high-conductivity copper wire can effectively reduce the resistance and reduce copper loss; Increasing the cross-sectional area of the winding also reduces the current density and thus the copper loss, just as widening the road reduces traffic congestion. In terms of operation management, reasonable adjustment of the load of the transformer to avoid long-term overload operation can also reduce copper loss.

Dielectric loss: The "power thief" of insulation materials

Dielectric loss Angle tangent is usually used to measure the size of dielectric loss, dielectric loss Angle tangent value is smaller, indicating that the quality of the insulation material is better, the insulation performance is better. If the dielectric loss is too large, the insulation material will accelerate aging due to heat, reduce the insulation performance, and may even lead to insulation breakdown, resulting in safety accidents.

Reduce losses and improve performance

Transformer core loss, copper loss, aluminum loss, dielectric loss and flow loss and other types of losses, like hidden in the power transmission system "reef", always affect the performance of the transformer and the efficiency of the power system.

In today's energy shortage and increasingly stringent environmental requirements, it is urgent to reduce transformer losses. On the one hand, we can start from the technical level, by selecting high-performance iron core materials, optimizing winding design, improving insulation technology, etc., to reduce the inherent loss of the transformer. For example, the use of amorphous alloy iron cores instead of traditional silicon steel sheet iron cores can significantly reduce core losses; The use of highly conductive copper or aluminum materials and optimization of winding cross-sectional area can effectively reduce copper and aluminum losses. On the other hand, in the operation management, reasonable arrangement of the transformer load, to avoid light load, overload and other unreasonable operation state, strengthen the monitoring and maintenance of the transformer, timely detection and treatment of potential problems, can also reduce the loss.

Paying attention to transformer loss and taking active measures to reduce the loss is the key to improve the economy and reliability of power system. Only in this way can we make the power system more efficient and stable operation, and provide reliable energy security for the development of society.

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