40mva 42mva 110kv 220kv Electronic Oil Filled Distribution Transformer
40mva 42mva 110kv 220kv Electronic Oil Filled Distribution Transformer
1. Product Description
The 40mva 42mva 110kv 220kv Electronic Oil Filled Distribution Transformer is a high-capacity, high-voltage class oil immersed power transformation equipment designed for regional power transmission, large-scale industrial power supply and new energy grid connection projects. Covering two mainstream large capacities of 40MVA and 42MVA, this electronic oil filled transformer supports dual high voltage grade operation of 110kV and 220kV, serving as core substation-level power distribution equipment in modern medium and high voltage power grids. Fully manufactured in accordance with IEC 60076 international power standards and utility grid technical specifications, this heavy-duty oil immersed power transformer adopts advanced oil-paper insulation system and optimized electromagnetic design, meeting the strict operational requirements of national power grids, large industrial bases and centralized new energy power stations.
Different from conventional medium and small distribution transformers, this 110kV/220kV high voltage oil filled transformer is built for bulk power transmission and voltage conversion between high-voltage transmission networks and medium-voltage distribution systems. Equipped with high-permeability low-loss silicon steel core and high-purity copper coil windings, the 40MVA and 42MVA models effectively control no-load loss and load loss during long-term full-load operation. The fully sealed steel tank is filled with high-dielectric mineral insulating oil, which provides stable insulation protection and efficient circulating heat dissipation. Integrated with electronic voltage regulation and monitoring modules, this electronic oil filled distribution transformer realizes real-time operational data collection and intelligent voltage adjustment, solving the problems of unstable grid voltage and high transmission loss in large-capacity power transmission scenarios.
2. Core Product Features
This series of 40MVA and 42MVA 110kV/220kV electronic oil filled distribution transformers integrates energy-saving design, intelligent electronic control, high safety performance and ultra-strong environmental adaptability. It overcomes the defects of high loss, single regulation mode and difficult monitoring of traditional high-voltage transformers, and is a high-reliability upgraded solution for modern large-scale power grid construction and industrial power matching.
2.1 Dual Voltage Grade Compatibility and Flexible Capacity Matching
Supporting both 110kV and 220kV high-voltage input adaptation, this oil immersed power transformer can be flexibly configured according to regional grid voltage standards and transmission demands. The 40MVA rated capacity is suitable for conventional regional substation power distribution and stable load power transmission, while the 42MVA model reserves sufficient overload margin, perfectly matching projects with slight peak load fluctuation and future power demand growth. The dual-capacity and dual-voltage design greatly improves equipment versatility, avoiding repeated equipment investment caused by grid specification differences, and adapting to diversified high-voltage power transmission scenarios.
2.2 Intelligent Electronic Regulation and Real-Time Monitoring
Different from ordinary manual adjustment transformers, this electronic oil filled distribution transformer is equipped with built-in intelligent electronic control components, supporting automatic voltage regulation, operational temperature monitoring and load data real-time collection. The precision electronic regulation system can dynamically calibrate output voltage according to grid load changes, effectively restraining high-voltage grid voltage drift and harmonic interference. It realizes unattended intelligent operation, facilitates remote grid scheduling and fault early warning, and greatly improves the overall intelligent level of high-voltage power distribution systems.
2.3 Ultra-Low Loss Energy-Saving Structure
Adopting advanced full-mitered core stacking process and balanced three-phase winding layout, the high-voltage oil immersed transformer minimizes magnetic leakage loss and idle power consumption. Optimized oil circulation heat dissipation structure ensures uniform temperature distribution inside the equipment, avoiding local overheating and energy waste during long-term full-load operation. Compared with traditional high-capacity transformers of the same grade, the comprehensive operating loss is significantly reduced, fully meeting national and international high-voltage power equipment energy-saving and low-carbon standards, and creating long-term economic benefits for power grid operation.
2.4 Fully Sealed Anti-Leakage Oil Immersed Insulation System
The integral fully welded sealed tank structure completely isolates internal windings, iron core and insulating oil from external air, moisture and dust. The high-strength oil-paper insulation system has excellent dielectric strength and aging resistance, maintaining stable insulation performance under long-term high-voltage operation. The precision sealing process effectively eliminates oil leakage risks that easily occur in large-capacity high-voltage transformers, realizing long-term low-maintenance operation and reducing later equipment maintenance and oil replacement costs.
2.5 Strong Short-Circuit Resistance and Operational Safety
Reinforced internal mechanical structure and high-temperature resistant insulating materials greatly enhance the transformer’s short-circuit impact resistance and seismic stability. Built-in multi-dimensional safety protection mechanisms including over-temperature protection, overload protection, short-circuit locking and pressure relief protection can quickly respond to high-voltage grid sudden faults. The whole machine is designed with low partial discharge, effectively avoiding insulation breakdown and equipment burnout, ensuring safe and stable operation of 110kV and 220kV high-voltage transmission networks.
3. Core Usage
As key hub equipment for high-voltage power transmission and distribution systems, the 40mva 42mva 110kv 220kv Electronic Oil Filled Distribution Transformer mainly undertakes high-capacity voltage conversion, power transmission and grid load balancing tasks between high-voltage transmission grids and terminal medium-voltage distribution networks. It converts 110kV or 220kV ultra-high grid voltage into standard medium-voltage power, providing stable large-capacity power support for regional power supply and industrial heavy-load production.
In actual power system operation, this intelligent oil immersed power transformer effectively reduces electric energy loss during long-distance high-voltage transmission, optimizes regional power grid power quality, and suppresses high-voltage grid voltage fluctuation and harmonic pollution. The 40MVA and 42MVA large-capacity design meets the bulk power transmission demand of urban main substations and industrial hub power stations, and can cooperate with large-scale new energy power bases to complete grid-connected power collection and voltage matching. It plays a core role in improving power grid transmission efficiency, balancing regional power load and ensuring the stability and reliability of high-voltage power distribution systems.
4. Application Scenarios
With large load capacity, high voltage grade compatibility and intelligent operational performance, this 110kV/220kV electronic oil filled distribution transformer is widely used in urban hub power grids, large industrial bases, new energy power stations and key national power transmission projects, covering all high-capacity high-voltage power distribution scenarios.
4.1 Urban Main Substation Power Grid Construction
It is the core application scenario for 40MVA and 42MVA high-voltage transformers. Widely deployed in urban 110kV and 220kV hub substations and regional power grid upgrading projects, it undertakes urban bulk power transmission and step-down distribution tasks. It effectively solves the problem of insufficient power supply capacity in urban peak power consumption periods, stabilizes urban terminal power quality, and supports the safe operation of urban commercial, residential and industrial integrated power grids.
4.2 Large Industrial and Mining Enterprise Power Supply
Suitable for self-provided substations of large metallurgical factories, chemical industrial parks, mining groups and heavy manufacturing enterprises. These heavy-load industrial scenarios require long-term uninterrupted large-capacity power supply. The 40MVA and 42MVA high-voltage oil immersed transformers can withstand continuous full-load operation, meet the power demand of large industrial production lines and heavy mechanical equipment, and ensure stable power supply for industrial production and avoid production shutdown losses caused by grid fluctuation.
4.3 Large-Scale New Energy Power Base Grid Connection
Matched with centralized photovoltaic power bases, onshore wind farm clusters and energy storage power station projects. This high-voltage electronic oil filled transformer converts high-voltage power generated by new energy units into grid-compliant voltage, realizing centralized collection, voltage regulation and grid-connected transmission of clean energy. Its intelligent monitoring function can adapt to the intermittent and fluctuating output characteristics of new energy power generation, improving new energy grid-connected stability and energy utilization rate.
4.4 Cross-Regional Power Transmission Projects
Applied to regional power grid interconnection, cross-city power transmission and power peak regulation projects. The 110kV and 220kV dual-voltage adaptation capability enables the equipment to adapt to different regional grid voltage standards, realizing reasonable distribution and scheduling of cross-regional power resources, optimizing regional power grid operation structure, and improving the overall utilization rate of power grid resources.
4.5 Key Infrastructure Power Guarantee Projects
Used for supporting power supply of super-large data centers, railway transit hubs, airport supporting facilities and national key water conservancy projects. These key infrastructure projects have extremely high requirements for power supply stability and continuity. The high-reliability and intelligent regulation performance of this oil filled distribution transformer can provide long-term stable large-capacity power guarantee for key national infrastructure operation.
5. FAQ
5.1 What is the difference between 40MVA and 42MVA 110kV/220kV electronic oil filled transformers in actual use?
Both models adopt the same 110kV/220kV dual-voltage design, electronic intelligent regulation system and oil immersed sealing structure, with consistent safety standards and service life. The core difference lies in rated load capacity and overload tolerance. The 40MVA oil filled distribution transformer is suitable for regional substations and industrial projects with stable and fixed full-load demand, with higher cost performance for conventional steady-load operation. The 42MVA model has a 5% higher load margin, which can cope with short-term peak load surge and annual power demand growth, making it more suitable for rapidly developing urban power grids and expanding industrial parks. Users can select the model according to current load status and 3–5 years of power growth plans.
5.2 Why choose electronic oil filled structure for 110kV/220kV high-voltage transformers instead of dry-type structure?
For 110kV and 220kV high-voltage and large-capacity power transmission scenarios, electronic oil immersed transformers have irreplaceable practical advantages. The oil circulation cooling system has larger heat capacity and stronger continuous overload resistance, which can stably operate under long-term full load, while dry-type transformers are limited by air cooling conditions and cannot adapt to high-capacity high-voltage continuous operation. In addition, the oil filled insulation system has better high-voltage resistance and partial discharge control capability, with lower failure rate in high-voltage grid environments. The built-in electronic monitoring module also makes up for the single function of traditional transformers, realizing intelligent operation and maintenance, which is more in line with the operational needs of modern high-voltage smart power grids.
5.3 What professional maintenance does this high-capacity high-voltage oil filled transformer require?
This 40MVA/42MVA electronic oil immersed distribution transformer belongs to low-maintenance high-voltage power equipment. Daily operation mainly relies on intelligent electronic system automatic monitoring, and staff only need to regularly check equipment operating temperature, oil level and terminal connection status. Thanks to the fully sealed structure, internal insulating oil is not easy to deteriorate or absorb moisture, eliminating the need for frequent oil replacement. It is necessary to clean radiator dust regularly to ensure unobstructed heat dissipation. Professional inspections including oil quality testing, partial discharge detection and electronic module calibration are recommended every 8–10 years. Standard maintenance can effectively extend equipment service life and ensure long-term stable operation of high-voltage power transmission systems.
