10000KVA 110kV Class Oil Immersed 3-Phase Step-up Transformer (220V/380V/440V Output)
1. Product Description
This 10000KVA three-phase oil immersed step-up transformer belongs to professional 110kV class high-voltage power conversion equipment, designed with multi-spec low-voltage output options including 220V, 380V and 440V to meet global industrial and grid matching demands. Different from conventional step-down distribution transformers, this 3-phase step-up transformer adopts reverse voltage ratio design, which efficiently boosts low-voltage power to standard 110kV high-voltage power for long-distance transmission and grid integration. With a rated capacity of 10MVA, it balances medium-large power transmission demand and on-site installation flexibility, becoming a practical high-efficiency power transformation device for distributed power generation and industrial power grid upgrading projects.
Manufactured in full compliance with IEC 60076 and IEEE industrial standards, this 110kV class oil immersed transformer adopts high-purity oxygen-free copper windings and high-performance grain-oriented silicon steel core. The internal electromagnetic structure is precisely optimized to adapt to multi-output voltage working conditions, ensuring stable conversion efficiency whether outputting 220V single-phase compatible voltage, 380V industrial standard three-phase voltage or 440V international high-standard industrial voltage. Adopting mature oil liquid cooling and fully sealed oil tank technology, the equipment takes high-quality transformer oil as insulation and heat dissipation medium, supporting reliable ONAN natural cooling operation for long-term outdoor unattended work. Equipped with precision off-load tap adjustment function, it can fine-tune voltage output according to actual load and line fluctuation, effectively solving voltage deviation problems in step-up power transmission scenarios. This versatile 3-phase step-up power transformer is widely customized for new energy power stations, remote engineering power supply and industrial grid expansion projects.
2. Core Product Uses
The core purpose of this 10000KVA 110kV class 3-phase step-up transformer is to complete low-to-high voltage power conversion and efficient power transmission in medium and large power systems. It mainly converts conventional 220V, 380V and 440V low-voltage industrial and civilian power into 110kV high-voltage grid power, realizing low-loss long-distance power transmission, decentralized power collection and centralized grid-connected power delivery.
In actual system operation, this oil immersed step-up power transformer solves the core pain point of low transmission efficiency of low-voltage power. By boosting terminal low-voltage power to 110kV high voltage, it greatly reduces line current and transmission loss, improving the overall energy utilization rate of the power system. It supports flexible switching of 220V, 380V and 440V input matching, adapting to different regional power supply standards and industrial equipment voltage specifications. The equipment can stabilize power quality during step-up conversion, suppress harmonic interference and voltage surge, and ensure safe and standardized grid connection of scattered power sources. In addition, it has excellent overload resistance and short-circuit impact resistance, which can cope with sudden load changes and grid faults, guaranteeing continuous and stable operation of power collection and transmission links, and providing reliable core support for new energy consumption and regional power grid optimization.
3. Main Application Scenarios
3.1 Distributed New Energy Power Station Grid Connection
This 110kV class 10000KVA three-phase step-up transformer is widely used for grid-connected power boosting of medium-sized photovoltaic power stations, wind farms and biomass power generation projects. Most new energy generating units output 220V, 380V or 440V low-voltage power, which cannot be directly connected to 110kV high-voltage transmission grids. This oil immersed step-up transformer can collect scattered low-voltage power and boost it to standard 110kV high voltage, realizing centralized grid-connected power transmission and improving new energy power consumption efficiency and grid-connected stability.
3.2 Remote Engineering and Field Power Transmission
It is the key power transformation equipment for long-distance power supply of remote mining areas, mountain engineering projects, field infrastructure and pastoral zone construction. Remote areas are limited by geographical conditions, making it difficult to lay high-voltage lines directly. The system can generate or collect local 220V/380V/440V low-voltage power, and use this step-up transformer to boost voltage to 110kV for long-distance low-loss transmission, solving the problem of insufficient power supply capacity in remote construction scenarios.
3.3 Industrial Park Power Grid Upgrading and Expansion
Suitable for power system upgrading of industrial parks, manufacturing bases and light industrial clusters using 220V, 380V and 440V industrial voltage. With the expansion of industrial production scale, the original low-voltage power transmission mode faces large loss and insufficient capacity. This 10MVA high-efficiency step-up transformer can boost industrial self-generated or residual low-voltage power to 110kV high voltage for grid-connected power transmission or regional power scheduling, optimizing industrial power utilization and reducing enterprise power consumption costs.
3.4 Cross-Regional Power Supplementary Transmission Projects
In regional power grid peak regulation and power supplementary transmission projects, the equipment is used for collecting surplus low-voltage power from urban and industrial terminals. Through stable 110kV voltage boosting conversion, it realizes cross-regional power mutual supply and peak load balancing, effectively alleviating regional power supply tension and improving the flexible scheduling capacity of the whole power grid.
3.5 Overseas Standard Industrial Power Projects
With compatible 220V, 380V and 440V multi-voltage output adaptation, this 3-phase oil immersed step-up transformer perfectly matches European, Asian, African and American industrial power standards. It is widely applied in overseas industrial construction, international engineering contracting and foreign power grid supporting projects, solving the problem of voltage standard mismatch in cross-border power projects and improving project universality.
4. Outstanding Product Features
4.1 Multi-Voltage Compatibility, Global Scene Adaptability
Different from single-voltage step-up transformers on the market, this 110kV class three-phase transformer supports three mainstream low-voltage specifications of 220V, 380V and 440V, covering civilian, domestic industrial and international industrial voltage standards. Users can freely match the corresponding low-voltage input according to on-site equipment and grid conditions without replacing the whole equipment, realizing multi-scene universal application. This multi-voltage flexible design greatly improves equipment utilization and avoids resource waste caused by voltage specification mismatch, suitable for diversified global power conversion scenarios.
4.2 Low Loss and High Efficiency, Energy-Saving Transmission
Adopting high-grade low-loss silicon steel core and high-conductivity pure copper winding structure, combined with optimized electromagnetic circuit design, this oil immersed step-up transformer effectively reduces no-load loss, load loss and transmission harmonic loss. In low-to-high voltage step-up conversion and long-distance transmission processes, the energy loss is far lower than the industry standard level. Whether operating with 220V, 380V or 440V low-voltage input, it maintains efficient power conversion performance, significantly reducing long-term power transmission loss and operational energy consumption costs for power stations and industrial users.
4.3 Fully Sealed Oil Immersed Structure, High Operational Safety
The whole machine adopts integrated fully sealed corrugated oil tank and vacuum oil injection process, which completely isolates internal insulating oil and windings from external air and moisture. It effectively prevents transformer oil deterioration, water absorption and insulation aging, and avoids common faults such as oil leakage and partial discharge. The high-strength high-voltage insulation structure can resist lightning impulse, overvoltage impact and short-circuit current impact, ensuring stable and safe operation under 110kV high-voltage working conditions. The oil liquid cooling system provides stable heat dissipation support for long-term full-load operation, adapting to harsh outdoor working environments.
4.4 Stable Step-Up Performance and Strong Anti-Interference Ability
Through precise turns ratio calibration and three-phase balance optimization design, the equipment realizes accurate and stable step-up conversion from various low voltages to 110kV high voltage, with small output voltage fluctuation rate. It can effectively suppress grid harmonic, line voltage drop and external electromagnetic interference in the power conversion process, ensuring excellent grid-connected power quality. The built-in voltage stabilization and fault tolerance mechanism can cope with low-voltage load fluctuation and instantaneous current impact, maintaining continuous and stable step-up transmission capacity.
4.5 Reliable Mechanical Structure and Strong Short-Circuit Resistance
The internal iron core and windings adopt integral clamping reinforcement and anti-vibration structural design, passing strict factory sudden short-circuit test. The equipment can withstand instantaneous short-circuit current impact in high-voltage grid operation, avoiding internal winding deformation and displacement. With strong mechanical stability and anti-fatigue performance, it can adapt to long-term continuous operation and frequent load changes, effectively reducing equipment failure rate and improving overall operational reliability.
4.6 Low Maintenance Cost and Long Service Life
Benefiting from the fully sealed maintenance-free design, this 10000KVA 110kV step-up transformer does not require frequent oil replacement and internal cleaning maintenance. High-quality anti-aging and anti-corrosion materials are used for internal and external components, which can resist outdoor high temperature, low temperature, dust and humid erosion. The equipment has stable long-term operating performance, few vulnerable parts and low daily maintenance pressure, with a design service life of up to 30 years, delivering high comprehensive cost performance for industrial and grid long-term operation.
5. Frequently Asked Questions (FAQ)
5.1 How to choose between 220V, 380V and 440V matching modes for this 110kV step-up transformer?
The three voltage matching modes correspond to different on-site power supply standards. The 220V mode is mainly applicable to civilian power collection and domestic conventional low-voltage power scenarios; the 380V mode matches most domestic industrial three-phase equipment and conventional industrial power distribution systems; the 440V mode is tailored for international industrial equipment and overseas 60Hz power grid standard scenarios. Before installation, technicians only need to adjust the internal tapping group according to the actual on-site low-voltage power supply specification to complete mode switching. The main step-up performance and 110kV output parameters of the transformer remain unchanged in all modes, ensuring stable power conversion in different voltage scenarios.
5.2 What is the biggest difference between this 110kV class step-up transformer and conventional step-down transformers?
The core difference lies in the voltage conversion direction and application positioning. Conventional oil immersed distribution transformers focus on high-to-low voltage step-down for terminal power distribution, while this 3-phase step-up transformer realizes low-to-high voltage boosting, dedicated for power collection and long-distance high-efficiency transmission. In addition, this 10MVA step-up equipment supports multi-low-voltage flexible input adaptation, has stronger anti-interference and voltage stabilization performance for grid-connected transmission, and is more suitable for new energy power collection and cross-regional power transmission projects. Its internal winding ratio and electromagnetic tolerance are professionally optimized for high-voltage step-up working conditions, with higher operational stability than modified step-down transformers.
5.3 Can this 10000KVA oil immersed step-up transformer operate continuously at full load outdoors?
Yes, this 110kV class three-phase step-up transformer is designed for heavy-duty continuous working conditions. Adopting efficient oil liquid circulating cooling and fully sealed heat dissipation structure, it can support long-term 24-hour full-load stable outdoor operation. It also has qualified short-term overload capacity, which can withstand 1.5 times rated load operation within 6 hours to cope with temporary power surge and peak load impact. The whole machine is treated with outdoor anti-corrosion and weather resistance, adapting to high temperature, low temperature, rainy and dusty complex environments, fully meeting the long-term unattended operation requirements of outdoor substations and field power projects.
