220kv Power Transformer - China

As a key equipment in the power system, 220kV power transformer shoulders the heavy task of voltage conversion and power transmission.

It has a compact structure and consists of iron core, winding, oil tank, insulating sleeve and other components.

It is widely used in power grid, photovoltaic, wind power, energy storage, hydrogen production, factory and other power fields.

Advantages of 220KV power transformer

Dual 37kV Secondary Outputs

The split-winding design provides two independent 37kV secondary outputs, allowing the transformer to supply separate collector bus sections or load groups.

This configuration is well suited to large photovoltaic, wind power, energy storage and industrial power projects.

High-Capacity Power Transmission

With a total rated capacity of 300MVA, the 220kV power transformer can support large power-generation and high-load applications while maintaining stable voltage conversion between the 220kV grid and downstream 37kV systems.

Flexible Voltage Regulation

The 230±8×1.25% voltage-regulation range allows the transformer to adapt to grid-voltage fluctuations and changing load conditions, helping maintain a stable secondary-side voltage.

Reliable Cooling Performance

The ONAF cooling system combines natural oil circulation with forced-air cooling to improve heat dissipation under high-load operation.

Controlled oil and winding temperature rise supports reliable continuous service.

Optimized Impedance Design

The specified impedance between the high-voltage and two low-voltage windings helps limit fault current and supports coordination with downstream protection systems.

The final impedance can be evaluated according to the project’s short-circuit study and bus arrangement.

Reduced Operating Losses

Controlled no-load and load losses help reduce long-term electricity waste.

For transformers operating continuously, lower losses can contribute to a more favorable lifecycle operating cost.

Suitable for Renewable Energy Projects

The dual-secondary configuration enables one transformer to connect two medium-voltage collector systems, helping simplify the electrical layout of large solar farms, wind farms, energy-storage stations and hydrogen-production facilities.

Customizable for Project Requirements

Capacity, voltage ratio, impedance, cooling configuration, insulation level, monitoring devices and operating-environment requirements can be adjusted according to the customer’s technical specification and single-line diagram.

Applications of 220KV power transformer

A 220kV high voltage transformer is generally suitable for projects where the incoming or outgoing transmission voltage is 220kV.

Typical applications include:

Company Contact:

• Posted By: Nanjing Liye Power Transformer Co., Ltd.

• Phone: 13913837751

• Address: No.1 Huqiao Road, Jiangpu Street, Jiangbei New District, Nanjing , Nanjing , China

• Email:

• Website: https://www.liyeelectric.com/

• Business Description: Shenzhen Liye Group Co., Ltd., founded in 1995 and headquartered in Shenzhen, is a comprehensive industrial holding group with a registered capital of 10 billion yuan.
  
  Adhering to a business philosophy of “integrity, loyalty, and professionalism,” the group has long pursued an “industry + finance” model.