Professional 220KV Oil immersed Power Transformer Supplier – Product and Solution Introduction

Thank you for following our product. As a key equipment supplier in the field of power transmission and distribution, we focus on researching, designing, and manufacturing high-performance, high reliability 220KV oil immersed power transformers. Our products are widely used in national backbone power grids, regional substations, large energy bases, and major industrial projects, winning market trust with excellent quality and stable performance.

220KV Oil-Immersed Power Transformers

1. Product Overview

The 220KV oil immersed power transformer is a core hub equipment in the power system, responsible for important functions such as voltage conversion, power distribution, and system isolation. Our transformer adopts classic oil immersed cooling technology, combined with modern materials science and digital design, to ensure the long-term safe, stable, and efficient operation of the equipment in high voltage and large capacity environments.

2. Core product features and technological advantages

2.1Excellent electrical performance and high reliability

Low loss and high efficiency: Adopting high-quality high magnetic conductivity silicon steel sheets, advanced core structure and winding technology, effectively reducing no-load and load losses, meeting or even exceeding national energy efficiency standards (such as GB 20052), helping customers reduce the operating costs throughout the entire life cycle.

High insulation level: The insulation system design has sufficient margin, using high-performance insulation cardboard and transformer oil to ensure that the product can withstand various overvoltages and lightning strikes, with extremely high electrical strength and long-term insulation stability.

Strong short-circuit withstand capability: The winding adopts mechanical reinforcement measures such as internal support bars and pressure nails, and has been verified through strict dynamic and thermal stability tests, which can effectively resist the impact of external short-circuit currents and ensure the safety of the power grid.

2.2Advanced structural design and manufacturing processes

Lean manufacturing of core components:

• Core: Adopting a stepped seam and non perforated binding process to reduce no-load losses and noise.
• Winding: High quality oxygen free copper wire is selected for the electromagnetic wire, and advanced winding structures such as twisted and inner screen are used to optimize the electric field distribution and improve the short-circuit resistance.
• Fuel tank: Adopting a fully sealed structure or equipped with high-performance oil storage tanks (such as diaphragm and capsule), effectively preventing oxygen and moisture from entering and delaying insulation aging.

Comprehensive temperature rise control: The cooling system design is optimized through computational fluid dynamics (CFD) simulation, using methods such as plate radiators or forced oil circulation air cooling (OFAF) to ensure uniform temperature rise in all parts and within standard limits, thereby extending equipment life.

2.3Intelligent state monitoring and operation support

• Integrated intelligent components: optional integrated transformer intelligent terminal, real-time online monitoring of key parameters such as dissolved gas in oil (DGA), winding hotspot temperature, partial discharge, and bushing dielectric loss.
• Digital interface: Supports international standard communication protocols such as IEC 61850, seamlessly integrates with substation automation systems and power grid dispatch centers, and achieves status visualization, fault warning, and intelligent diagnosis.
• Provide data support for condition based maintenance: Through continuous data analysis, help customers transition from “regular maintenance” to “condition based maintenance”, improve operational efficiency, and reduce unplanned downtime.

2.4Environmental Protection and Safety

Environmentally friendly insulation medium: It can provide transformers using high ignition point natural ester insulation oil (vegetable oil), which has the advantages of high fire resistance, biodegradability, environmental friendliness, and non toxicity. It is particularly suitable for places with strict fire and environmental requirements (such as urban centers and near nature reserves).

Comprehensive safety protection: equipped with multiple protection devices such as pressure relief valves, gas relays, and emergency pressure relays to ensure timely action in case of faults and prevent accidents from escalating.

3.Main technical parameter range

• Voltage level: 220kV (242kV)
• Capacity range: usually from 120MVA to 300MVA, can be customized according to customer needs.
• Voltage regulation method: Non excitation voltage regulation or on load voltage regulation (OLTC).
• Frequency: 50Hz/60Hz
• Standards: Complies with international and national standards such as GB, IEC, IEEE, ANSI, etc.

4. Our services and commitments

We not only sell products, but also provide comprehensive solutions and lifelong services.

• Customized solution: Provide the most optimized and economical product design based on the specific application scenarios, geographical environment, and technical specifications of the customer.
• Full lifecycle technical support: providing one-stop service from technical consultation and scheme selection in the early stage of the project, to installation guidance, commissioning and operation in the middle stage, and then to operation and maintenance training and spare parts supply in the later stage.
• Strong delivery capability: With a modern production base and mature supply chain system, we can ensure product quality and on-time delivery.

A comprehensive quality assurance system: providing comprehensive quality assurance and after-sales service, and responding quickly to customer needs.

SSZ20-220KV 31500KVA-240000KVA Three Phase Three Winding OLTC Power Transformer

5. Typical application areas

• 
  National and regional power grids: 500kV/220kV hub substations, 220kV/110kV regional substations.
• Large power plants: such as the main transformer or start-up/standby transformer of the booster station of thermal power plants, hydropower plants, and nuclear power plants.
• New energy gathering station: a step-up and grid connected transformer for large wind farms and photovoltaic power stations.
• Major industrial projects: providing reliable power supply for petrochemical, metallurgical, rail transit, data centers, etc.
• summary

Choosing us as your supplier of 220KV oil immersed power transformers means you have chosen:

Excellent product performance and long-term reliable operation

Leading technological innovation and intelligent operation and maintenance experience

Deep customer customization and full cycle service guarantee

We look forward to working with you to contribute to building a safer, more efficient, and smarter modern power system.

If you need detailed technical solutions or business negotiations, please feel free to contact us at any time.