WHAT IS STATIC VAR GENERATOR?
The principle of SVG: When the load is generating inductive or capacitive current , it makes load current lagging or leading the voltage . SVG detects the phase angle difference and generates leading or lagging current into the grid , making the phase angle of current almost the same as that of voltage on the transformer side .which means fundamental power factor is unit.
Static Var Generator systems are based on VSC (voltage source controller) technology and usually custom-made for a specific case or installation. SVG devices are connected in shunt or parallel to the load.
SVG is usually installed to support electricity networks that have a poor power factor and often poor voltage regulation. SVG is the best solution often deployed by utilities or large operations to solve flicker, harmonic and dynamic reactive compensation problems.
What to expect with GreenVar
GreenVar is a very simple and effective means to eliminate leading or lagging power factor, reduce voltage fluctuations, enhance equipment operating life, and improve system power capacity.
GreenVar offers many features in one package that others require multiple models to accomplish. Power Factor correction with TKV is worry-free and without the risk of resonance.
Otherwise, capacitor banks are switched on or off according to load condition, which has limited compensation effects as the above figure.
GreenVar generates compensation current according to load variation, so it shows much better performance than conventional capacitor banks.
BENEFITS
Technical Benefits
1 Enhanced reliability
2 Improved voltage
3 Power system stabilization
4 Rapid response to system events
5 Real and reactive power flow control
6 Increased power transfer limits
Economical Benefits
1 Reduced production disturbances
2 Lower energy costs
3 Increased equipment lifetime
4 No penalty charges for reactive power or harmonic distortion
5 Increased network capacity and therefore reduced investment costs
6 Lower operating costs
7 May release governmental tax reliefs
Environmental Benefits
1 Lowered CO2 emissions
2 Competitive advantage through good citizenship image
3 Reduced product lifecycle environmental impact
4 Increased equipment lifetime
5 Reduced energy consumption
6 Smaller network dimensioning
THOSE INDUSTRIES NEED GreenVar
GreenVar is used in two main situations:
1 Connected to the power system, to regulate the transmission voltage
2 Connected near large industrial loads, to improve power quality
1 Metallurgical industry: Mainly used in the production line rolling mill.
2 Oil industry: Mainly frequent and quick start motor, pumping machine, and so on.
3 Rail Transit: Massive use of long-distances cables and serious three-phase unbalance due to unavoiding demand.
4 Automotive: welding or laser welding machines resulting two voltage steps.