LV/HV Switchgear for Shengsi Offshore Wind Farm Control Center

Table of Contents

Rapid Development and Challenges of Offshore Wind Power: The Shengsi sea area is rich in wind energy resources and is one of the key regions for offshore wind power development in China. Unlike onshore environments, offshore wind farms and their control centers face harsh conditions such as high humidity and high salt spray. This places more stringent demands on the switchgear equipment, a core component of the power distribution system: it must possess exceptional corrosion resistance and long-term operational reliability.
The Control Center’s Critical Need for Power Supply Reliability: The control center acts as the “brain” of the wind farm, responsible for monitoring, commanding, and dispatching power for the entire facility. Any interruption in its power supply system due to switchgear failure could lead to significant power generation losses or even safety incidents. Therefore, the client urgently required a reliable LV/HV switchgear solution capable of long-term stable operation, low failure rates, and ease of maintenance to ensure the continuous and robust operation of the control center’s core functions.

Product	Model/Specs	Technology	Client Value
HV Switchgear	KYN28-12 1250A/31.5kA	・Titanium Alloy Coating: 20,000h salt spray zero corrosion ・Arc Defense: 1s pressure relief + AI arc prediction (failure prob. ↓ to 10⁻⁸)	Lifespan 5yr→30yr
LV Switchgear	MNS 6300A IP55	・Wind Harmonic Filter: Active damper (THDi↓ to 2.8%) ・Seismic Proof: 8 Magnitude resistance (0.5g response)	False trips ↓100%
Smart Panel	GGD 4000A	・ms Transfer: Dual-source ATS ≤15ms ・Anti-Condensation: PTC heating + N₂ pressurization (auto-start at >85% RH)	Zero UPS interruption

Enhanced Environmental Suitability: To combat the high salt spray environment, more corrosion-resistant plating or coating processes (such as SMC composite materials common for outdoor enclosures) were used for sheets and surface treatment. Critical components received special anti-corrosion treatment, significantly enhancing equipment lifespan in harsh conditions.
High-Reliability Structural Design: The HV switchgear employs a metal-clad armored structure, and the LV switchgear uses a modular drawer-type design. This design not only isolates risks but also ensures functional units are independent, minimizing the impact during maintenance and greatly improving power supply continuity and maintenance convenience.
Sensitive and Comprehensive Protection Configuration: Integrated advanced microprocessor-based comprehensive protection devices (for HV switchgear) and intelligent circuit breakers (for LV switchgear), equipped with complete protection functions like overcurrent, instantaneous trip, and earth fault protection, ensuring rapid and accurate fault clearance to protect upstream and downstream equipment.
Intelligent Operation and Maintenance Support: Optional intelligent meters and communication interfaces enable real-time monitoring of key parameters like current, voltage, and power, which can be uploaded to the control center’s monitoring system, providing a data foundation for condition-based maintenance and intelligent operations.