The role of power electrical transformer

Power electrical transformer are one of the main equipment in power plants and substations. The function of the transformer is multi-faceted. It can not only increase the voltage and send the electric energy to the electricity-consuming area, but also reduce the voltage to the voltage used at all levels to meet the needs of electricity consumption. In short, both step-up and step-down need to be completed by a transformer. In the process of transmitting electrical energy in the power system, two losses of voltage and power will inevitably occur. When the same power is transmitted, the voltage loss is inversely proportional to the voltage, and the power loss is inversely proportional to the square of the voltage. The use of transformers to increase the voltage reduces transmission losses.

The electrical transformer is composed of two or more coil windings wound on the same iron core. The windings are connected by an alternating magnetic field and work according to the principle of electromagnetic induction. The installation location of the transformer should be considered to be convenient for operation, maintenance and transportation, and a safe and reliable place should be selected at the same time. When using the transformer, it is necessary to select the rated capacity of the transformer reasonably. When the transformer is running at no-load, a larger reactive power is required. These reactive powers are to be supplied by the power supply system. If the capacity of the transformer is too large, it will not only increase the initial investment, but also make the transformer run at no-load or light-load for a long time, which will increase the proportion of no-load loss, reduce the power factor, and increase the network loss. Reasonable. If the transformer capacity is too small, the electrical transformer will be overloaded for a long time and the equipment will be easily damaged. Therefore, the rated capacity of the transformer should be selected according to the needs of the electrical load, and should not be too large or too small.