STATCOM : The Core Solution for Power Factor Correction

STATCOM : The Core Solution for Power Factor Correction

Large-scale solar systems are rapidly integrating into medium and high voltage power grids worldwide.

Power factor correction has become a critical requirement for these solar projects.

Poor power factor can lead to grid penalties, reduced energy efficiency, and unstable operation.

This is where medium and high voltage STATCOM, also known as Static Var Generator (SVG), steps in.

As an advanced reactive power compensation device, it ensures solar systems meet grid standards and operate efficiently.

Why Power Factor Correction Matters for Medium & High Voltage Solar Systems

Medium and high voltage solar systems (10kV and above) supply large amounts of power to the grid.

Their power factor directly affects grid stability and energy.

Most grid codes require a power factor range of 0.9 leading to 0.9 lagging for such systems.

Failing to meet this standard results in heavy financial penalties from utility companies.

Solar energy’s inherent worsens power factor fluctuations.

Cloud cover, diurnal cycles, and seasonal changes cause sudden power output variations.

These fluctuations disrupt reactive power balance, threatening grid safety.

What Is Medium & High Voltage STATCOM/Static Var Generator?

Medium and high voltage STATCOM is a dynamic reactive power compensation device.

Unlike traditional capacitor banks, it uses advanced power electronics (IGBT/SiC) for precise control.

The core function of this Static Var Generator is to adjust reactive power in real time.

It injects or absorbs reactive power to maintain a stable power factor.

How Medium & High Voltage SVG Works for Solar Systems

The SVG monitors the solar system’s voltage and current parameters.

It uses a digital control system to calculate real-time reactive power needs.

When power factor drops, the SVG instantly injects the required reactive power.

It responds in less than 1 millisecond, far faster than traditional compensation devices.

This rapid response neutralizes the impact of solar power fluctuations.

Key Advantages of Medium & High Voltage STATCOM for Solar Projects

Medium and high voltage SVG offers unique benefits for solar power factor correction:

•         Precise Power Factor Control: It maintains power factor at 0.95 or higher, exceeding most grid requirements.

•         Ultra-Fast Response: With response time <1ms, it handles sudden solar power fluctuations effectively.

•         Wide Voltage : Suitable for 10kV, 20kV, and 35kV solar systems, covering most medium-high voltage scenarios.

•         Low Harmonic Distortion: Generates less than 3% harmonic content, complying with IEEE 519 standards.

•         High Reliability: Modular design and IP65 protection ensure stable operation in harsh outdoor environments.

•         Energy Savings: Reduces line losses by 5-15%, lowering overall costs.

Real-World Applications of Medium & High Voltage SVG in Solar Projects

Many large-scale solar projects have adopted medium and high voltage STATCOM with great success:

1.      Saudi Arabia Sakaka 405MWp Solar Project: This project uses 45MVar+30MVar medium voltage SVG units.

2.      The SVG operates reliably in 60°C high temperatures and dusty conditions.

3.      It maintains a stable power factor above 0.95, ensuring smooth grid integration.

4.      It provides precise reactive power support, improving voltage stability by 90%.

5.      The project’s power quality rate increased from 85% to 99%.

6.      It reduced harmonic distortion from 12% to below 3% and optimized power factor to 0.98.

How to Choose the Right Medium & High Voltage SVG for Solar Systems

Selecting the appropriate Static Var Generator requires considering these key factors:

•         Voltage Level Matching: Choose 10kV, 20kV, or 35kV models based on the solar system’s grid connection voltage.

•         Capacity Calculation: Determine the required SVG capacity according to the solar project’s rated power.

•         Environmental : Prioritize units with high protection levels for extreme weather conditions.

•         Grid Code Compliance: Ensure the device meets local grid standards for power factor and harmonics.

•         Modular Design: Opt for modular SVG for easy expansion and maintenance.

The Future of STATCOM in Solar Power Factor Correction

As solar energy capacity grows, the demand for medium and high voltage SVG will increase.

Technological advancements will focus on higher efficiency and smarter control.

Integration with AI prediction and energy storage systems will become a trend.

This will further enhance the performance of solar power factor correction.

Conclusion: Invest in Medium & High Voltage STATCOM for Solar Success

Medium and high voltage STATCOM/Static Var Generator is essential for solar projects.

It ensures compliance with grid codes, reduces costs, and improves stability.

Choosing the right SVG solution is a strategic investment for long-term solar project success.

Are you developing a medium or high voltage solar project?

Need a customized STATCOM solution for power factor correction?

Our team of experts specializes in solar power quality solutions.

Contact us sales@yt-electric.com  today to optimize your solar system’s performance.