Description
2500 kVA 10 kV Oil-immersed Transformer: Dedicated Power Equipment for New Energy Grid Connection
New energy power generation suffers from industry pain points such as power output fluctuations and high harmonic interference. Most general-purpose Power Distribution Equipment is unsuitable for the intermittent power supply conditions of photovoltaic and wind power. Project owners often face challenges such as equipment overload tripping, high long-term energy consumption, and incompatible outdoor power distribution systems. This 2500 kVA 10 kV Oil-Immersed Transformer is specifically designed for renewable energy projects and is suitable for wind power, centralized photovoltaic, and integrated photovoltaic-storage scenarios. It can be paired with a Box-Type Substation, High And Low Voltage Switchgear, and Electric Power Converter to complete the entire voltage boosting and grid connection configuration. The optimized magnetic circuit structure effectively suppresses harmonic impacts, stabilizes power output, reduces long-term operating losses, and is suitable for the long-term continuous outdoor operation requirements of Combined Photovoltaic Substations. Compared with the same specification Dry-Type Transformer, it offers lower overall procurement and maintenance costs for outdoor applications, significantly shortening the power plant’s payback period.
The core function of this equipment is voltage step-up and step-down conversion for new energy power plants, boosting the low-voltage output of photovoltaic modules and wind turbines to the standard 10 kV grid-connected voltage, compatible with Energy Storage and related converter equipment. The entire unit uses a Class A energy-efficient iron core and a fully sealed corrugated oil tank structure, withstanding complex outdoor environments such as high temperatures, sandstorms, and coastal salt spray. It possesses short-term overload tolerance and is suitable for fluctuating operating conditions such as full-load daytime photovoltaic power generation and high-load wind power gusts. The equipment can be deployed independently or integrated into a pre-installed transformer substation, combining with high and low voltage switchgear and power converters to form an integrated photovoltaic step-up unit. It is widely used in ground-mounted photovoltaic power plants, onshore wind farms, and large-scale energy storage projects, balancing long-term operational stability and economic efficiency, meeting the cost reduction and efficiency improvement needs of the new energy industry.
Product Features
New Energy Harmonic Adaptation Design: Optimized winding structure for photovoltaic and wind power output fluctuations, reducing harmonic losses, adapting to unstable current output from the Electric Power Converter, and reducing the probability of grid connection failure.
Stable all-weather outdoor operation: Fully sealed insulating oil protection, superior heat dissipation efficiency compared to Dry Type Transformers, eliminating the need for frequent indoor installations; directly compatible with Box Type Substations for outdoor operation.
Practical Tips
When used with Combined Photovoltaic Substations, a corresponding High and Low Voltage Switchgear must be matched simultaneously, with space reserved for harmonic monitoring installation.
Annual maintenance requires only one oil quality check, avoiding long-term oil shortages and leaks, extending the overall service life of the unit.
FAQ
Q: Can this Oil Immersed Transformer be directly used for rooftop distributed photovoltaics?
A: For enclosed rooftop spaces, Dry Type Transformers are preferred. This model is more suitable for large ground-mounted photovoltaic sites and outdoor Combined Photovoltaic Substations. For rooftop scenarios, a smaller box-type substation can be selected separately.
Q: What are the daily maintenance cycle and key operating points for the equipment?
A: Under normal operating conditions, oil level, oil temperature, and insulating oil sampling tests are conducted annually, along with inspection of the enclosure’s sealing welds. Frequent oil draining and replacement are unnecessary, making maintenance simpler compared to dry-type equipment.
Q: Does the supply support complete sets of Box Type Substations and high/low voltage switchgear?
A: Integrated complete solutions are available, with synchronized matching of high and low voltage switchgear specifications and matching Electric Power Converter docking components. Overall commissioning is completed at the factory.
Q: What is the equipment warranty period and after-sales response time?
A: The standard warranty for the entire unit is three years, with an extended warranty for the core windings. 48-hour technical support is provided for domestic and international projects, offering remote fault diagnosis and on-site maintenance guidance.
Q: Can it be used directly in high-altitude, high-humidity coastal environments?
A: Customized anti-corrosion and low-voltage capacity versions are available, with enhanced tank sealing and rust-proofing treatment for the outer casing, adaptable to various harsh outdoor new energy power station environments.
| Rated Capacity (kVA) | HV Rated Voltage (kV) | HV Tapping Range | LV Rated Voltage (kV) | Vector Group | Level 1 No-Load Loss (kW) | Level 1 Load Loss (kW) | Level 2 No-Load Loss (kW) | Level 2 Load Loss (kW) | Level 3 No-Load Loss (kW) | Level 3 Load Loss (kW) | Short-Circuit Impedance (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 30 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.08 | 0.505/0.480 | 0.08 | 0.630/0.600 | 0.1 | 0.630/0.600 | 4 |
| 50 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.1 | 0.730/0.695 | 0.1 | 0.910/0.870 | 0.13 | 0.910/0.870 | 4 |
| 68 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.11 | 0.870/0.830 | 0.11 | 1.090/1.040 | 0.15 | 1.090/1.040 | 4 |
| 80 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.13 | 1.050/1.000 | 0.13 | 1.310/1.250 | 0.18 | 1.310/1.250 | 4 |
| 100 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.15 | 1.260/1.200 | 0.15 | 1.580/1.500 | 0.2 | 1.580/1.500 | 4 |
| 125 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.17 | 1.510/1.440 | 0.17 | 1.890/1.800 | 0.24 | 1.890/1.800 | 4 |
| 160 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.2 | 1.850/1.760 | 0.2 | 2.310/2.200 | 0.28 | 2.310/2.200 | 4 |
| 200 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.24 | 2.180/2.080 | 0.24 | 2.730/2.600 | 0.34 | 2.730/2.600 | 4 |
| 250 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.29 | 2.560/2.440 | 0.29 | 3.200/3.050 | 0.4 | 3.200/3.050 | 4 |
| 315 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.34 | 3.060/2.920 | 0.34 | 3.830/3.650 | 0.48 | 3.830/3.650 | 4 |
| 400 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.41 | 3.610/3.440 | 0.41 | 4.520/4.300 | 0.57 | 4.520/4.300 | 4 |
| 500 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.48 | 4.330/4.120 | 0.48 | 5.410/5.150 | 0.68 | 5.410/5.150 | 4 |
| 630 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.57 | 4.960 | 0.57 | 6.200 | 0.81 | 6.200 | 4.5 |
| 800 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.7 | 6.000 | 0.7 | 7.500 | 0.98 | 7.500 | 4.5 |
| 1000 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.83 | 8.240 | 0.83 | 10.300 | 1.15 | 10.300 | 4.5 |
| 1250 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 0.97 | 9.600 | 0.97 | 12.000 | 1.36 | 12.000 | 4.5 |
| 1600 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 1.17 | 11.600 | 1.17 | 14.500 | 1.64 | 14.500 | 4.5 |
| 2000 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 1.55 | 14.600 | 1.55 | 18.300 | 1.94 | 18.300 | 5 |
| 3000 | 6 / 6.3 / 10 / 10.5 | ±2×2.5% / ±5% | 0.4 | Dyn11 / Yzn11 / Yyn0 | 1.83 | 16.900 | 1.83 | 21.200 | 2.29 | 21.200 | 5 |
