What is difference between Static VAR Generator and Hybrid compensation?

Static VAR Generator (SVG) and Hybrid Compensation both solutions used in power systems to improve power quality and mitigate issues related to voltage and reactive power control. However, there are differences between the two approaches.

1. Static VAR Generator (SVG):

   • An SVG is a power electronic device used to compensate for reactive power in the transmission and distribution system.
   • It operates by injecting or absorbing reactive power to maintain voltage stability and control power factor.
   • SVG are typically composed of a self-commutating voltage-source inverter and a capacitor bank, which provides the dynamic reactive power compensation.
   • SVG react instantaneously to variations in the system voltage, providing fast response and accurate control.

2. Hybrid Compensation:

   • Hybrid compensation combines the features of different compensation methods, usually series and shunt compensation, to achieve optimal power quality enhancement.
   • In hybrid compensation, both active and reactive power components are controlled simultaneously to mitigate various power quality issues.
   • Hybrid compensation systems can consist of different devices, such as Static Compensators (STATCOMs), Static Synchronous Compensators (STATCONs), and other combinations of FACTS (Flexible AC Transmission Systems) devices.
   • The combination of these devices allows for precise control of voltage, reactive power, and harmonic elimination, providing a comprehensive solution to power quality problems.

In summary, while Static VAR Generators (SVGs) focus on reactive power compensation through instantaneous control, hybrid compensation systems utilize a combination of different compensation methods and devices to address a range of power quality issues more comprehensively.