Nexus Static Var Generators
Nexus Power SVG (Static Var Generator / Compensator) detects load current through external current transformers (CT’s) on-line and analyzes reactive component of the load current by DSP controller, then control IGBT inverter to generate reactive current and compensates the load reactive current to meet the target of line power factor.
The principle of the SVG is very similar to that of Active Power Filter. 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 unity.
Nexus Power SVG is also modular in design, and the SVG system consists of one or several SVG modules and an optional Liquid Crystal Monitor & Control Panel (LCM). Each SVG module is an independent reactive power compensation system, and users can change the SVG rating by adding or removing SVG modules. There are usually breakers, cable terminals and Surge Protection Device (SPD) in the SVG cabinet.
Functions & customer benefits
Key functions
- Flicker mitigation
- Voltage variation control
- Dynamic reactive power control
- Power factor improvement
- Harmonic current mitigation
- Load balancing
Customer benefits
- Increased torque and payload of large inductive loads with stabilized voltage
- Transmission and distribution network capacity enhancement
- Increased productivity of steel plants by reducing melt-time
- Longer plant lifetime
- Reduced maintenance costs
- Improved plant reliability
Applications
Nexus Power Static Var Compensator (SVC) can be flexibly used in reactive power compensation and passive harmonic filtering applications. Nexus SVC can be connected to voltage levels from 3.3 kV all the way up to 38.5 kV. The reactive power compensation range varies from 4 MVAr to 250 MVAr.
Other Products
Hybrid Static Var Generator (SVGC)
Nexus SVGC, the most economic solutions for reactive power compensation with better effect than traditional capacitor bank. Nexus SVGC integrate TSC and SVG, modular design, with dynamic compensation functions of reactive power compensation, harmonics compensation, voltage fluctuation, load unbalance.
