Background
A 500MW offshore wind farm in East China Sea confronted triple challenges:
1.Extreme Salt Corrosion:
- Control center 300m from coast, salt deposition 18mg/m³(3× IEC 60721-3-4 Class CX);
- Typhoon humidity >98%causing condensation shorts (failure rate ↑37% in 2023).
2.Wind Harmonic Pollution:
- DFIG-induced 5th/7th/11th harmonics(THDi>15%) triggering relay malfunctions (4.2 false trips/year);
- UPS sensitivity to voltage sags <20ms(national std 100ms).
3.O&M Isolation:
- Island logistics delayed repairs >48 hours;
- Wind farm downtime cost ¥86M/day(Shenergy Group data).
Core Solutions
Product | Model/Specs | Technology | Client Value |
HV Switchgear | KYN28-12 1250A/31.5kA | ・Titanium Alloy Coating: 20,000h salt spray zero corrosion | Lifespan 5yr→30yr |
LV Switchgear | MNS 6300A IP55 | ・Wind Harmonic Filter: Active damper (THDi↓ to 2.8%) | False trips ↓100% |
Smart Panel | GGD 4000A | ・ms Transfer: Dual-source ATS ≤15ms | Zero UPS interruption |
