Distribution transformer characteristics

Distribution transformer, referred to as "distribution transformer", is a static electrical appliance used to transform AC voltage and current in a distribution system to transmit AC electrical energy. The following is a detailed introduction to the distribution transformer:

I. Basic definition

Distribution transformers work according to the law of electromagnetic induction, converting a certain value of AC voltage (current) into another or several values of different voltages (current) with the same frequency.

It is usually used in power systems with voltage classes of 10-35kV and capacities of 6300KVA and below to supply power directly to end users.

Ii. Classification

Distribution transformers can be classified according to different criteria, mainly including:

According to the voltage level: it can be divided into ultra-high voltage (750kV and above), ultra-high voltage (500kV) transformers, 220-110kV transformers, 35kV and below transformers. Among them, voltage grade transformers below 35kV (most are 10kV and below) are usually referred to as distribution transformers.

According to the insulating medium: divided into oil-immersed transformer and dry transformer. Oil-immersed transformer relies on oil as cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, etc. Dry transformers rely on air convection for cooling.

According to the voltage regulation mode: divided into no excitation voltage regulation transformer and load voltage regulation transformer.

According to function: can also be divided into energy-saving oil-immersed transformer, amorphous alloy transformer and so on. Among them, amorphous alloy transformers have attracted much attention because of their extremely low no-load loss.

Three, the main function

Transmission of electrical energy: The main role of the distribution transformer is to reduce the voltage of high voltage, increase the current, and keep the frequency of alternating current unchanged, so as to provide the user with suitable electrical energy.

Energy saving and consumption reduction: With the promotion of energy saving policies, energy-saving, low noise, intelligent distribution transformer products have gradually been promoted and applied.

4. Market and application

Market status: China's distribution transformer industry has maintained a good momentum of development in recent years, especially under the promotion of urban and rural power grid transformation projects, the output and output value have increased. At the same time, with the deepening of the "energy saving and consumption reduction" policy, energy-saving distribution transformers have gradually replaced high-energy consumption products.

Application: Distribution transformers are widely used in various distribution networks, including urban power grids, rural power grids, industrial power grids, etc. They supply power directly to the end user and are an integral and vital part of the power system.

5. Development Trend

Technology upgrade: With the continuous progress of science and technology, the design and manufacturing technology of distribution transformers is also constantly updated and optimized. In the future, distribution transformers will pay more attention to energy saving, environmental protection and intelligence.

Marketing: Under the promotion of the policy, energy-saving distribution transformers will be more widely used and promoted. At the same time, with the improvement of raw material production capacity and the reduction of costs, the market share of high-end products such as amorphous alloy transformers will gradually expand.

To sum up, distribution transformers, as one of the key equipment in the power system, play an important role in the transmission and distribution of electric energy. With the continuous progress of technology and the constant change of market demand, distribution transformers will continue to develop in the direction of more efficient, energy-saving, environmentally friendly and intelligent.