Leverandør af elektroniske komponenter | Transformere, Induktorer, Invertere
Neglected photovoltaic core equipment
With the continuous explosive growth of global photovoltaic installed capacity in 2026, branchens fokus er ofte på moduler og invertere, but a key equipment is often overlooked – solar transformers.
In modern photovoltaic systems, transformers not only undertake the basic function of voltage conversion, but also gradually evolve into intelligent, digital, and monitored key node devices, playing a core role in improving grid stability, system efficiency, and energy dispatch capabilities.



What is a photovoltaic transformer?
Photovoltaic transformers are mainly used for:
- Step up the low-voltage AC power (usually 400V-800V) output by the inverter
- Realize long-distance power transmission (such as 10kV-220kV)
- Ensure grid connection safety and electrical isolation
| Komponent | Fungere |
|---|---|
| PV Panels | Generate DC electricity |
| Inverter | Converts DC → AC |
| Step-Up Transformer | Raises voltage for grid |
| Switchgear | Controls and protects system |
| Grid Connection | Power distribution |
The main types of photovoltaic transformers
1.Olie nedsænket transformer
- Suitable for large ground power stations
- Fremragende varmeafledningsevne
- strong carrying capacity
2.Dry type transformer
- Commonly used in industrial and commercial rooftop photovoltaics
- High safety (oil-free)
- Low maintenance cost
3.Box type transformer (pre installed)
- integrated design
- Nem installation
Comparison Table
| Type | Effektivitet | Opretholdelse | Anvendelse |
|---|---|---|---|
| Nedsænket i olie | ★★★★★ | Medium | Large solar farms |
| Dry-Type | ★★★★ | Low | Buildings |
| Pad-Mounted | ★★★★ | Low | Distributed PV |
Analysis of Key Technical Parameters
When choosing a photovoltaic transformer, it is important to pay attention to:
| Parameter | Beskrivelse |
|---|---|
| Nominel effekt (kVA/MVA) | Capacity of transformer |
| Spændingsforhold | Input vs output voltage |
| Vektor gruppe | Phase displacement (f.eks., Dyn11) |
| Afkølingsmetode | ONAN, TIL FRA, osv. |
| Impedance | Impacts fault current |
2026 Technology Trends: Intelligent Transformers
1.AI predictive maintenance
- Real time monitoring of temperature, oil quality, and load
- Early warning of faults to reduce downtime risks
2.Integration of smart grid
- Realize dynamic load adjustment
- Automatic voltage optimization
3.Digital tvillingteknologi
- Building a virtual model
- Optimize operation and maintenance strategies



Design Challenges in Photovoltaic Applications
1.Strong output volatility
- Load instability caused by changes in lighting conditions
- High adaptability design is required
2.High temperature environment
- Regions such as the Middle East and Africa have extremely high temperatures
- Strict requirements for cooling system
3.Harmonic problems
- Inverter generates harmonics
- Affects the lifespan of transformers
Case analysis: 100MW photovoltaic power station
| Parameter | Value |
|---|---|
| Kapacitet | 100 MW |
| Transformer Type | Oil-immersed |
| Spænding | 0.8kV → 132kV |
| Køling | ONAN/ONAF |
| Effektivitet | >99% |
How to choose a suitable photovoltaic transformer?
Suggest evaluating from the following dimensions:
- Project scale (kW/MW)
- Installation environment
- Grid connection requirements
- kølemetode
- Full lifecycle cost
Luoyang Datang Energy Technology Co., Ltd. er en højteknologisk virksomhed, der integrerer R&D, fremstilling og levering af strømudstyr såsom transformere, nye energikomponenter, distributionsskabe og invertere. Med teknologisk innovation som kernen, vi fokuserer på at skabe høj pålidelighed og højtydende strømløsninger til at betjene globale kunder. Med et strengt kvalitetskontrolsystem og international standard certificering, vi fortsætter med at producere fremragende produkter og gør det muligt for kunderne at bygge sikre og stabile strømsystemer.







