Improving Power Quality and Voltage Stability with FGI Static Var Generator: 4 Industrial Reactive Power Compensation Ca

Introduction

FGI’s Static Var Generator (SVG) technology plays a critical role in modern power systems by providing fast and dynamic reactive power compensation, enhancing voltage stability, and reducing harmonic distortions. This article presents three industrial application cases of FGI SVG solutions improving power factor correction, minimizing grid voltage fluctuations, and ensuring compliance with national electrical standards in China.

Case 1: Dynamic Reactive Power Compensation for Rolling Mill Using FGI SVG

Location: Heze City, Shandong Province
Compensation Capacity: -4000kvar to +4000kvar
System Voltage: 10kV

Load Characteristics:
The rolling mill faces severe voltage fluctuations and large reactive power disturbances during steel rolling, with a low power factor of 0.35 and harmonic distortions exceeding limits at the 5th, 7th, 11th, and 13th orders.

Compensation Results:

• Power factor improved to 0.98 through FGI SVG dynamic compensation

• Reactive power surges on the system side effectively eliminated

• Grid voltage fluctuations limited within 1.5%

• Harmonic voltages brought into compliance with regulatory requirements

Case 2: FGI SVG Application in 30MW Photovoltaic Power Plant

Location: Delingha City, Qinghai Province
Compensation Capacity: -8000kvar to +8000kvar
System Voltage: 110kV

Load Characteristics:
The photovoltaic station experiences reactive power and voltage fluctuations due to varying solar irradiance levels.

Compensation Results:

• Power factor maintained above 0.98

• Voltage fluctuations significantly reduced using FGI SVG’s voltage stabilization capability

• Grid voltage at the measurement point meets national standards

• Improved Low Voltage Ride-Through (LVRT) capability of the PV plant

Case 3: FGI SVG in Electric Arc Furnace Site

Location: Changji City, Xinjiang Province
Compensation Capacity: -16000kvar to +16000kvar
System Voltage: 35kV

Load Characteristics:
Electric arc furnace load varies violently, causing voltage flicker and generating multiple harmonics (2nd to 11th order, even and odd).

Compensation Results:

• Effective improvement of grid voltage quality and flicker reduction

• Voltage fluctuations and flicker controlled to meet national standards

• Stable operation of other equipment ensured

Case 4: FGI SVG Application in Urban Power Transmission and Distribution

Location: Mianyang City, Sichuan Province
Compensation Capacity: -2000kvar to +2000kvar
System Voltage: 10kV

Load Characteristics:
The supply line is relatively long, causing noticeable voltage fluctuations due to load variation and hydropower station output changes, with a low power factor.

Compensation Results:

• Significant improvement in grid voltage stability

• Power factor raised to meet utility company requirements

• Enhanced supply reliability for urban customers

Conclusion
FGI’s Static Var Generator (SVG) technology is essential for dynamic reactive power compensation, voltage stabilization, and harmonic suppression in complex industrial power environments. These cases illustrate how FGI SVG enhances power quality, improves grid stability, and supports compliance with electrical regulations, making it a vital component in modern power systems.

Production Base: Jincheng Road, Economic Development Zone, Wenshang County, Jining City, Shandong Province, China

Email: overseas@fengguang.com