| Brand | Switchgear parts |
| Numero sa Modelo | 550kV single-phase bowl insulator ng IEE-Business |
| Naka nga boltahang rated | 550kV |
| Serye | RN |
Ang 550kV single-phase bowl insulator mao ang core insulation component sa gas insulated metal enclosed switchgear (GIS), ug ang iyang diseno kinahanglan mosatisfy sa mga requirement sa electric field uniformity, mechanical strength, ug environmental protection sa mataas nga voltage levels. Sumala sa pinakabag-ong pagtungha, sumala ang komprehensibong teknikal nga analisis:
1、 Design optimization and performance improvement
Geometry optimization
Paggamit sa contour design nga "thick on both sides and thin in the middle", gihatag ang 25.4% ka bawas sa maximum electric field strength sa sulod sa concave surface, ug ang deformation mao usab ang gibawasan ngadto sa 29.9%
Pagsabot sa thickness variables (H ₁, H ₂, etc.) ug contour variables (C ₁ ₂, C ₁ ∝, etc.) pinaagi sa genetic algorithm aron mobalanse ang electrical ug mechanical performance
Application of dielectric gradient materials
Pag-introduce og high dielectric constant region near the grounding flange (such as titanium dioxide filled epoxy resin) naghatag sa dako nga pag-improve sa electric field distortion ug nagbawas sa paggamit sa SF6 gas ngadto sa 15%
3D printing combined with casting technology achieves dielectric non-uniform structure, increasing flashover voltage by 13.8%
2、 Key parameters and experimental verification
Electrical performance
Power frequency withstand voltage 230kV, lightning impulse withstand voltage 550kV, local discharge capacity ≤ 5pC
Human sa optimization, ang flashover voltage sa insulator adunay 13.6% ka increase kumpara sa conventional structure, ug mahimo pa usab nga madugdagan ngadto sa 6.7% bisan naa'y metal foreign objects
Mechanical performance
Ang maximum deformation gibawasan ngadto sa 0.45mm, ug ang interface stress mas mubo sa material limit (70MPa)
Verify the reliability of the structure through a water pressure failure test (1.5 times the rated pressure)
3、 Manufacturing process and environmental friendliness
Advanced technology
Gamiton ang aluminum oxide/photosensitive resin 3D printing low dielectric constant body (ε=3.98-4.20), high dielectric constant area (ε=11.32-14.58) vacuum casting, no aluminum ring design simplifies the structure, reducing the risk of SF6 gas leakage
Environmental benefits
Ang paggamit sa epoxy composite materials gibawasan ngadto sa 6.1%, ug ang paggamit sa SF6 gas gibawasan ngadto sa 15%
4、 Typical application scenarios
Ultra high voltage transmission: such as 550kV GIS equipment, suitable for compact substations or high-altitude environments
GIL system: Optimized bowl insulators can reduce the maximum electric field in gas areas by 13.6%, improving the reliability of GIL operation
Note: Customization with drawings is available