Reactive Power Compensation and Power Quality Improvement
Overview
The GSC series SVG (Static Var Generator) by SIFANG. is a cutting-edge dynamic reactive power compensation device. The core of the system utilizes a mature cascaded structure from the power electronics converter domain. Each phase consists of multiple compact and standardized power units connected in series. Built on the company’s unified software and hardware control platform—proven in over ten thousand successful applications—the GSC series SVG delivers exceptional functionality, outstanding performance, and advanced control strategies. The GSC series SVG effectively mitigates voltage fluctuations, power factor instability, and harmonic distortions caused by the intermittent nature of wind and solar power generation, ensuring grid compliance and system reliability.
Features
Safe and Stable
- Strong LVRT & HVRT capability
- Rapid response to grid faults
Powerful Functionality
- Supports multiple compensation modes
- Features low-frequency oscillation suppression
- Dynamic response ≤ 1ms
Compact and Reliable
- Integrated controller design features
- Minimal control delay
- Strong electromagnetic interference resistance
- Containerized compact design
Excellent Scalability
- Supports coordinated parallel operation of up to 16 SVG units
Benefits
Reactive Power Compensation
Delivers fast, continuous, and dynamic inductive and capacitive reactive power to the power system, ensuring optimal grid performance and stability.
Suppress Voltage Deviation and Fluctuation
Maintains the stability of line and load-side voltages, suppressing voltage fluctuations and flicker.
Reduce Line Losses
Compensates for reactive power, improves power factor, and reduces line losses, enhancing overall system efficiency.
Suppress Voltage Unbalance
Eliminates negative sequence currents and suppresses three-phase imbalance, ensuring balanced and stable system operation.
Harmonic Compensation
Dynamic harmonic compensation, improving power quality and ensuring cleaner, more stable electrical supply.
Typical Cases
India O2 Power BEED Windfarm Power Plant 2×30Mvar SVG Project
At the booster station of this wind farm project, two 30Mvar SVG units are installed on separate 33kV collector busbars to provide dynamic reactive power compensation and harmonic mitigation. The design takes into account the region’s high temperature and humidity conditions. Since commissioning, the system has been operating reliably, effectively stabilizing voltage fluctuations and meeting wind farm compensation requirements.
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Fujian Zhongmin Pinghai Bay Offshore Wind Farm Phase III
This project includes two 220kV booster stations, with a total capacity of 900MW—300MW connected onshore and 600MW to Lúcí Island. To address high salt mist corrosion and voltage fluctuations in submarine cables, the project employs two 35kV/31Mvar (island) and one 50Mvar (onshore) SVG units for compensation. The SVG system is installed indoors, with outdoor water-air heat exchangers. The water-cooling system uses 316 stainless steel and C5 anti-corrosion standards. Since commissioning, the equipment has operated reliably, ensuring offshore wind power quality.
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Tibet Chamdo Tianhui 110kV Booster Station Reactive Power Compensation
Located at an altitude of over 4,400m, this project faces extreme winter temperatures below -25°C. It utilizes a 35kV/14Mvar SVG unit housed in a containerized structure with built-in electric heating. This solution stabilizes 35kV bus voltage, improves power factor, and meets the stringent electrical performance requirements of high-altitude environments.
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