Complete Energy Protection & Grid Integration
From circuit breaker selection to full automation control — engineered solutions covering the entire wind power electrical chain.
Circuit Breaker & Overcurrent Protection
End-to-end protection covering every node of the wind power electrical system.
Circuit Breaker Selection & Configuration
High Voltage Side — Transformer Box
Use vacuum circuit breakers rated for frequent wind-power cycling. Match system voltage; ensure breaking capacity covers maximum short-circuit current. Pair with overvoltage protection devices to prevent equipment damage.
Low Voltage Side — Transformer Box
Small capacity → molded-case breakers; large capacity → universal breakers. Three-stage protection: overload long-delay, short-circuit short-delay, short-circuit instantaneous. Designed for harmonic heat dissipation conditions.
Grid Side
Select grid-connected breakers that withstand frequent switching while providing fast fault isolation and grid-phase synchronization — adapting to start-stop cycles driven by wind fluctuations.
Full-Scenario Overcurrent Protection
Fan Body Side
Overload protection + quick-break protection acting on signal or direct machine cutoff. Low/high voltage and low/high frequency protection for grid-fluctuation resilience.
Box Transformer Side
HV side: plug-in full-range fuses for overload & short-circuit protection. LV side: breaker-based overcurrent protection from fan outlet to box transformer, activated to trip.
Collecting Line Side
Each 35 kV incoming line: microcomputer line protection with three-stage directional current protection, overload alarm, no reclosing, plus small-current line selection device.
Main Transformer & Booster Station
Differential protection + backup overcurrent on HV/LV sides. Independent 35 kV busbar protection. Dual-set independent overcurrent at 330 kV+ to ensure zero fault rejection.
Electrical System Design & Grid Optimization
Advanced architecture covering unit wiring, booster station construction, automation control, and grid compliance.
Core Electrical System Design
Unit Electrical Connection Scheme
Doubly-fed units: Y–△ hybrid connection (Y-rotor, △-stator) — outstanding fault isolation, 12% voltage stability improvement on grid side.
Distributed projects: Y-Y symmetric scheme — saves 40% wiring space, shortens installation by 30%, requires redundant breaker protection.
Booster Station Construction
Select high-reliability equipment based on load capacity & transmission distance. Cable specs matched to design with rational EMI-free layout, strict wiring per drawings, proper grounding, lightning protection & insulation. Real-time monitoring system for dynamic parameter tracking.
Automation & Grid Optimization
Automation Control Optimization
Modular electrical system with remote monitoring & fault diagnosis — on-site inspections reduced by 70%+, annual single-fan downtime cut from 45 h to 12 h. Built on reliability, economy & progressiveness principles.
Grid Compliance Plan
Voltage-frequency matching, power factor above 0.9, anti-islanding + overload short-circuit protection. Total harmonic distortion within 5% via filtering devices — fully meeting grid-connection technical specifications.
Need a Custom Energy Solution?
Our engineering team is ready to design a tailored wind power protection system for your project.
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