200Mva 10KV Three-Phase Oil Immersed Transformers with 220V Output and 35KV Input Voltage
200Mva 10KV Three-Phase Oil Immersed Transformers with 220V Output and 35KV Input Voltage
1. Product Description
The 200MVA Three-Phase Oil Immersed Transformer is a heavy-duty high-capacity power transformation device designed for large-scale power transmission and distribution systems, featuring a standard 35KV input voltage, dual 10KV medium-voltage and 220V low-voltage output specifications. Engineered strictly in accordance with IEC 60076 and international power industry standards, this industrial-grade oil immersed transformer adopts high-performance cold-rolled silicon steel core and high-purity oxygen-free copper winding structure, effectively solving heat accumulation and power loss problems during long-term full-load operation of high-capacity equipment. Different from conventional small and medium-sized distribution transformers, this 200MVA three-phase transformer supports multi-stage voltage conversion, perfectly matching the voltage gradient requirements of 35KV high-voltage grid access, 10KV industrial power distribution and 220V civilian terminal power supply.
This high-power 35KV input oil immersed transformer adopts a fully sealed corrugated oil tank structure and vacuum pressure oil injection process. The high-purity insulating oil inside the equipment undertakes dual functions of internal insulation and circulating heat dissipation, which can maintain stable dielectric strength and heat conduction efficiency under long-term high-load and continuous operation conditions. The overall structural design optimizes magnetic circuit distribution, effectively suppressing magnetic flux leakage and operational vibration noise. With ultra-high 200MVA rated capacity, it can bear stable power conversion for large grid loads, and the dual output design of 10KV and 220V greatly improves the comprehensive utilization rate of power equipment, making it a core supporting device for regional large-scale power supply projects.
2. Core Uses
As a key core device in medium and high voltage power systems, the 200MVA three-phase oil immersed transformer mainly undertakes precise voltage conversion and centralized power distribution tasks with 35KV high voltage as the input terminal. Its core working principle is to step down the 35KV high-voltage electric energy transmitted by regional main grids to stable 10KV medium-voltage industrial power and 220V civilian low-voltage power, realizing hierarchical and classified power supply for different load terminals. It effectively solves the problems of single voltage output and low load-bearing capacity of traditional transformers, and meets the simultaneous power supply demands of industrial production equipment and residential civilian facilities in the same power grid area.
In addition to basic voltage transformation functions, this 35KV input 220V output oil immersed transformer also undertakes important grid operation tasks such as system load balancing, power quality optimization and line loss reduction. During peak power consumption periods, it can stably bear large current impact and load fluctuation, avoid terminal voltage drop and power supply interruption, and maintain the stability of 10KV industrial power grid and 220V civilian power grid. At the same time, the low-loss structural design effectively reduces no-load loss and operating energy consumption in the power conversion process, improving the overall power transmission efficiency of the power system and reducing long-term grid operation costs.
3. Application Scenarios
3.1 Regional Main Substation Power Transformation
This 200MVA high-capacity three-phase oil immersed transformer is widely used in urban central substations, regional power hub substations and industrial zone central power distribution stations. The equipment accesses 35KV main grid power, and converts it into 10KV medium-voltage power for industrial park partition power distribution and 220V low-voltage power for urban residential communities, realizing integrated power supply for industry and civilian use. Its ultra-large load capacity fully meets the centralized power consumption demand of large urban areas and industrial clusters, and the oil immersed heat dissipation structure adapts to long-term full-load continuous operation of substations.
3.2 Large Industrial Cluster Power Supply
It is the preferred power transformation equipment for large chemical industrial parks, metallurgical manufacturing bases, mining industrial zones and heavy industry gathering areas. These industrial scenarios have the characteristics of high total power load, long continuous operation time and obvious peak load fluctuation. The 35KV input 10KV output function of the transformer can stably supply power for large industrial mechanical equipment and production lines, while the 220V output can meet the power demand of factory office areas, living supporting facilities and on-site monitoring systems, realizing one-stop power distribution for industrial production and factory life.
3.3 New Energy Centralized Grid Connection Projects
In large-scale centralized photovoltaic power stations, wind power bases and energy storage power station projects, this 200MVA three-phase oil immersed transformer plays a key role in grid-connected power conversion. The electric energy generated by new energy units is boosted and stabilized, then connected to the 35KV main grid through the transformer, and the power is decomposed into 10KV and 220V voltage levels for local power consumption and regional power transmission. The equipment has strong anti-interference ability, which can adapt to the unstable output characteristics of new energy power generation, effectively optimize grid-connected power quality, and ensure safe and stable grid-connected operation of new energy power stations.
3.4 Urban Power Grid Upgrading and Reconstruction
In urban old grid renovation, suburban new district construction and power grid capacity expansion projects, this high-capacity oil immersed transformer solves the problems of insufficient power supply capacity and single voltage grade of old power distribution equipment. The 35KV high-voltage access standard is compatible with modern urban main grid specifications, and the dual 10KV/220V output can flexibly match the power demand of urban commercial buildings, residential communities and municipal public facilities, effectively improving the power supply reliability and load-bearing capacity of urban power grids.
4. Product Features
4.1 Multi-Voltage Grade Matching & Strong Versatility
This three-phase oil immersed transformer adopts a professional multi-voltage design, with a fixed 35KV high-voltage input terminal, and supports simultaneous stable output of 10KV medium voltage and 220V low voltage. It covers industrial medium-voltage power distribution and civilian low-voltage power supply scenarios in one device, avoiding the need for multiple sets of transformer equipment for hierarchical voltage conversion. The voltage conversion accuracy is high, the output voltage fluctuation range is small, and it can perfectly adapt to the matching standards of various power grid systems and terminal electrical equipment, with extremely high application versatility.
4.2 Ultra-High Capacity & Strong Load Impact Resistance
With a rated capacity of 200MVA, this high-power transformer is oriented to large-scale power supply scenarios, far exceeding the load-bearing capacity of conventional distribution transformers. It can operate stably under long-term full-load and overload conditions, and can effectively resist instantaneous current impact and peak load fluctuation in power grid operation. The optimized winding and core structure improves the equipment's short-term overload tolerance, ensuring no overheating tripping or power supply instability during power consumption peaks, and providing reliable power guarantee for high-load continuous operation scenarios.
4.3 Low Loss Energy-Saving Structure & High Operational Efficiency
Adopting high-quality low-loss oriented silicon steel core and high-conductivity oxygen-free copper winding, the equipment optimizes the internal magnetic circuit and circuit structure, greatly reducing no-load loss, load loss and magnetic flux leakage loss. Compared with traditional high-capacity transformers of the same type, the overall operating energy consumption is significantly reduced, and the power transmission efficiency is higher than 99%. Long-term operation can effectively reduce power grid line loss and equipment operating costs, meeting the energy-saving and consumption-reducing requirements of modern smart power grids.
4.4 Fully Sealed Oil Immersed Design & High Stability
The whole machine adopts an integrated fully sealed oil tank and vacuum oil injection process, which completely isolates internal insulating oil from external air, moisture and dust. It avoids oil aging, emulsification and insulation performance degradation caused by long-term outdoor operation, realizing long-term maintenance-free operation. The internal circulating oil cooling system has uniform heat dissipation and fast heat dissipation speed, which can effectively export heat generated by high-power operation, ensure stable temperature of the equipment during continuous operation, and greatly extend the overall service life of the transformer.
4.5 Harsh Environment Adaptability & Low Noise Operation
The shell is treated with overall anti-corrosion, rust-proof and weather-resistant coating, which can adapt to outdoor open-air substations, humid industrial zones, dusty field power stations and other harsh working environments. The optimized core lamination and winding damping structure suppresses operational vibration and electromagnetic noise, making the equipment run with low noise during full-load operation, which will not cause noise interference to the surrounding living and production environment. It is suitable for urban substations, industrial parks and other scenarios with high environmental requirements.
5. FAQ (Frequently Asked Questions)
5.1 What are the applicable scenarios for the dual 10KV and 220V output of this 200MVA transformer?
The dual-output design is tailored for integrated industrial and civilian power supply scenarios. The 10KV medium-voltage output is mainly used for power supply of large industrial equipment, park centralized power distribution and secondary substation power transformation, adapting to high-power industrial production loads. The 220V low-voltage output is specially used for residential household power supply, commercial building daily power consumption and municipal public facility power supply. This dual-output structure can realize one machine for multiple purposes, effectively saving equipment investment and installation space for large power supply projects.
5.2 What is the core advantage of 35KV input high-capacity oil immersed transformer compared with conventional transformers?
Different from conventional low-capacity distribution transformers, this 200MVA transformer supports 35KV high-voltage direct grid access, with larger power transmission radius and higher power supply efficiency. Its ultra-high capacity can meet the power demand of large regional loads, and the dual 10KV/220V output realizes hierarchical power distribution. In addition, the fully sealed low-loss structure has lower operating energy consumption and higher operational stability, with stronger overload resistance and environmental adaptability. It is more suitable for hub-level power transformation projects than ordinary transformers.
5.3 Does this high-capacity oil immersed transformer require frequent daily maintenance?
No frequent routine maintenance is required. This 35KV input three-phase oil immersed transformer adopts a fully sealed maintenance-free structural design, which completely prevents external pollutants from entering the oil tank and avoids insulating oil deterioration and insulation aging. In daily operation, users only need to regularly check the equipment shell sealing, grounding state and external connection stability. There is no need for frequent oil detection, oil replacement and internal component maintenance, which greatly reduces the later operation and maintenance workload and comprehensive operating cost of power stations and substations.
