110kV Oil-immersed Power Transformers

• As a power grid or large-scale project procurement, the energy consumption cost of long-term operation of equipment is the core consideration.Kechang's 110kV Oil-immersed power Transformers use amorphous alloy three-dimensional coil core technology and all-copper wire winding vacuum casting process. The no-load loss is more than 60% lower than the national standard Level 1 energy efficiency limit, and the load loss is also optimized to the industry low level.
• The built-in AN/AF secondary cooling system can be intelligent switching: natural air-cooled and energy-saving operation under daily load, and the low-noise fan is automatically activated at peak load to force heat dissipation. With the optimized design of the heat sink and ventilation trough, the heat dissipation efficiency is increased by 40%, and the temperature rise is effectively controlled.
• This ultra-low loss power transformer design can save you a lot of electricity bills every year, especially for long-term high-load operation scenarios such as new energy power plants and industrial parks.

• The short-circuit shock caused by the grid-connected new energy and the start-stop of industrial equipment can easily lead to transformer failure, which is an important concern when purchasing.The equipment adopts a new type of iron core suspension structure to enhance the overall mechanical strength; the winding adopts a tight winding process, and high-strength insulating materials are used between the layers and the turns, which can withstand the impact of 31.5kA short-circuit current, which far exceeds the conventional level of the industry.
• The key parts have been strictly tested for partial discharge (PD), and the local discharge level is controlled below 10pC to avoid insulation aging caused by partial discharge.This reliable design can effectively cope with power grid fluctuations and shocks, reduce the risk of failure and shutdown, and ensure stable power supply. It is a high-quality choice for high short-circuit withstand transformer.

1.Urban power grid transmission and distribution system

As the core equipment of urban substations, it reduces the 110kV high-voltage electricity from power plants to 35kV/10kV and transmits it to residential areas, commercial complexes, subways, hospitals, etc. through the distribution network, meeting the daily electricity demand of the city. ​

2. Self-owned power stations of industrial enterprises

It is applicable to self-owned power stations of large enterprises such as steel, chemical, and non-ferrous metal smelting industries, reducing the power of self-owned generators to 6kV/10kV. With its high overload capacity and low loss characteristics, it is suitable for industrial production scenarios with large load fluctuations and high requirements for continuous operation, reducing the electricity costs of enterprises. ​

3. Long-distance power transmission projects

In cross-regional transmission lines such as those in the suburbs, as an "intermediate voltage reduction node", it cooperates with transmission lines to achieve long-distance power supply, solving the problems of large power supply radius and unstable voltage in remote areas, and facilitating the construction of rural electrification. ​

4. New energy grid-connected system

It is a key equipment for grid connection of new energy power stations such as wind power and photovoltaic power. In centralized photovoltaic power stations and wind farms, the 35kV power output by inverters is raised to 110kV and then connected to the national power grid, achieving efficient grid connection of new energy power and ensuring the quality of grid-connected power. ​

5. Rail transit power supply system

The traction power supply system used for high-speed railways, urban subways/light rails first reduces the power voltage of the power grid to supply power to the traction substation, and then supplies power to the trains through traction voltage transformation and rectification equipment. It has the capabilities of anti-vibration, anti-shock and rapid response, meeting the 24-hour uninterrupted operation requirements of rail transit.