With the rapid development of urban social economy, the contradiction between energy supply and demand has become increasingly prominent. For power supply and distribution systems, it is particularly important to promote energy-saving and technical measures and equipment. The transformer is the core power distribution dispatching equipment in the power supply and distribution system. Its energy-saving economic dispatching operation is the top priority of the energy-saving research of the power grid system. Reasonable measures to reduce the energy consumption of the transformer are the key to the power supply and distribution system.

First, the key technology of energy saving and consumption reduction of transformer

1.1 Adopt new materials

In the transformer manufacturing, the use of new materials instead of aluminum alloy or steel materials can enhance the corrosion resistance of the transformer and reduce the resistance, thereby achieving the purpose of energy saving. There are currently two main types of new materials that are popular. The first type is an oxygen-free copper material, which can effectively reduce the internal resistance of the coil of the distribution transformer and achieve the purpose of energy saving. The oxygen-free copper material has the characteristics of simple processing technology, convenient material selection and low cost, and is also beneficial for enhancing the resistance of the distribution transformer to short circuit. The second is the use of amorphous alloy materials as magnet materials for distribution transformers. The iron core made of amorphous alloy material can effectively reduce the electromagnetic loss, thereby achieving the purpose of improving the economics of the distribution transformer.

1.2 Adding an automatic voltage regulator

The loss of the transformer has a close relationship with the voltage of the distribution network. By installing the corresponding compensation capacitor on the load tap position of the transformer, it is possible to optimize and adjust the operating voltage of the distribution network. The automatic voltage regulator is a device that uses a three-phase coupling transformer to automatically adjust the ratio according to the actual input voltage value of the distribution transformer to ensure the output voltage is stable, so that the input voltage value is automatically adjusted within 3% of the normal value, and the internal use is utilized. The corresponding controller controls the voltage of the entire system in real time to achieve the maximum energy saving.

1.3 Economic operation mode of distribution transformer

The energy consumption of the distribution transformer is not only related to the manufacturing materials and processing technology of the distributor, but also has a great relationship with the operation mode of the distribution transformer. Therefore, optimizing the operation mode of the distribution transformer is the key to energy saving and consumption reduction of the distribution transformer. At present, the operation mode of the traditional distribution transformer is still adopted in China. The operation mode of the traditional transformer is not reasonable enough, which results in high energy consumption of the transformer and cannot meet the economic requirements... In the actual power distribution system In the case of no power consumption compensation. The specific measure is to install a parallel transformer reactive power compensation component in the power distribution system, which can provide the reactive power consumed by the inductive load. Commonly used methods include, first, grouping compensation of distribution transformers, paralleling no-power components at low voltage. The second is to adopt advanced technical means to keep the three operating conditions of the transformer in line with the long-term balanced working conditions. In addition, an important technical means to reduce the running loss of the distribution transformer is to make the distribution transformer basically in balance by adjusting the balance of the three-phase load. In the actual distribution transformer, when the three-phase load is unbalanced, the negative sequence voltage will be caused, and the system voltage will fluctuate, thus affecting the energy consumption of the power distribution system. When the three-phase distribution transformer is unbalanced, it not only increases its own energy consumption, but also increases the loss of the line. Therefore, it is necessary to balance the three-phase power.