Product Description
SVG (Static Var Generator) is an advanced reactive power compensation device based on power electronics technology. It is mainly used to dynamically adjust reactive power in power systems, improve grid stability and improve power quality. The following is a detailed introduction:
1. Basic working principle
SVG is composed of voltage source inverter (VSC) and DC capacitors. It uses high-frequency switching devices such as IGBT to detect the reactive power demand of the system in real time. It generates an AC voltage that is synchronized with the system voltage and has adjustable phase through a control algorithm, thereby quickly injecting or absorbing reactive power (capacitive or inductive) to achieve dynamic compensation.
2. Core features
Fast response: The response time is ≤10ms, which is much faster than traditional SVC (thyristor controlled reactor).
Continuously adjustable: Reactive output can be smoothly adjusted (within the capacity range of -100% to +100%).
Low harmonic pollution: Using PWM modulation technology, the output harmonic content is low (THD<3%).
No need for large-capacity reactors/capacitors: small size and small footprint.
Strong adaptability: suitable for voltage fluctuation, unbalanced and harmonic environments.
3. Main structural components
Power unit: IGBT inverter bridge, DC capacitor.
Control system: DSP/FPGA to achieve fast signal processing and control algorithm.
Connecting reactor: filter high-frequency switching noise and connect to the power grid.
Cooling system: air cooling or water cooling design.
Monitoring interface: human-computer interaction and remote communication functions.
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