Solutions-GoLead Intelligent

Background and Challenges

During operation, onshore wind farms face the following major challenges:

High Requirements for Turbine Grid-Connection Accuracy

Wind turbines start and stop frequently, requiring high-precision synchronization to ensure overall system stability.
High Reliability Requirements for Collector Line Switching

In the event of a main power source failure, millisecond-level seamless transfer is required to ensure continuous power supply to critical loads.
Urgent Need for Inrush Current Mitigation

Equipment such as transformers and capacitor banks is prone to magnetizing inrush currents during switching operations, which must be effectively suppressed to prevent equipment damage.

Overview

Leveraging over 80% market share in synchronization systems and industry-leading fast transfer technology, GoLead Intelligent delivers an integrated solution combining precise synchronization, seamless power transfer, and smart inrush current suppression.

The solution covers key scenarios such as wind turbine grid connection, collector line switching, and substation power supply, enabling zero-flicker operation, low electrical impact, and extended equipment service life, while effectively adapting to the complex operating conditions and environmental challenges of wind farms.

Key Technologies

High-Precision Automatic Synchronization and Grid Connection

The solution delivers high-precision automatic synchronization with a phase angle deviation of ≤ 0.5°, supporting rapid grid connection of multiple wind turbines with a first-closing success rate exceeding 99.9%, while utilizing fully independently developed, localized synchronization devices to meet complex and frequent wind farm grid-connection requirements.
Millisecond-Level Seamless Fast Transfer

By coordinating fast transfer devices with high-speed vacuum circuit breakers, the system achieves an end-to-end switching time of ≤ 20 ms, effectively avoiding wind turbine disconnection caused by voltage sags and ensuring uninterrupted operation of critical loads such as turbine control systems and substations.
Smart Inrush Current and Overvoltage Suppression

Through microprocessor-based inrush current suppressors and phase-selection control technology based on residual flux–bias flux mutual cancellation, the solution significantly reduces switching inrush currents and overvoltages during transformer and capacitor bank operations, protecting primary equipment insulation and extending the service life of wind farm assets.

Application Results and Cases

In an application at a large onshore wind farm, the solution significantly enhanced overall power system performance by achieving 100% power supply continuity for critical loads, effectively eliminating equipment downtime caused by power source switching.

Through advanced inrush current suppression and overvoltage protection, the equipment failure rate was reduced by 30%, extending service life and improving long-term reliability. In addition, smart monitoring and diagnostic functions reduced the frequency of manual inspections, resulting in higher operation and maintenance efficiency.

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