Reactive Power Compensation in Charging Piles use SVG or capacitor reactor
Jan 06, 2026| When selecting reactive power compensation equipment for charging pile systems, the choice between SVG (Static Var Generator) and capacitor-reactor combinations depends on the following factors:
SVG (Static Var Generator)
Advantages:
1. Fast response speed: SVG can adjust reactive power in real-time with a very fast response (millisecond-level), making it suitable for scenarios with significant dynamic load variations.
2. No harmonic issues: SVG itself does not generate harmonics and can filter out harmonics, thereby improving power quality.
3. High regulation accuracy: SVG provides precise reactive power regulation to meet higher power quality requirements.
Disadvantages:
1. Higher cost: Compared to traditional capacitor-reactor combinations, SVG incurs higher initial investment.
2. High technical complexity: SVG involves higher technical requirements and greater complexity in maintenance and management.
Capacitor-Reactor Combination
Advantages:
1. Lower cost: The equipment cost of capacitor-reactor combinations is lower, making it a traditional reactive power compensation solution.
2. Simple structure: Capacitor-reactor devices are mature in technology, simple in structure, and easy to maintain and manage.
Disadvantages:
1. Slow response speed: Capacitor-reactor combinations respond slowly and are less capable of handling rapidly changing load demands.
2. Harmonic issues: Capacitors may resonate with harmonic sources in the system, amplifying harmonics and affecting power quality.
3. Low compensation accuracy: Traditional capacitor-reactor combinations offer relatively low compensation accuracy and cannot precisely regulate reactive power.
Selection Recommendations:
If the charging pile system experiences significant load fluctuations, has high power quality requirements, and sufficient budget, SVG is recommended for more flexible and efficient reactive power compensation.
If the system load is relatively stable, cost control is a priority, and power quality requirements are not stringent, traditional capacitor-reactor combinations can be chosen.