AUTOMATIC POWER FACTOR CORRECTION(APFC)

STATIC VAR GENERATOR(SVG)

With Steps: Employ Switching IN and OUT fixed value capacitor banks and there by achieves the desired PF at the grid end of the supply

Stepless: Uses scalable IGBT based inverter to produce infinitely achieve desired set Point.

Single Phase Sensing: Normally APFC Relay Works on R Phase current Sensing & Provide 3 Phase Equal compensation based on R Phase Reactive Power requirement

Three Phase sensing: SVG works on all three phases(R, Y & B) current sensing & provide individual compensation based on respective Phase reactive power requirement

LV Sensing: Normally APFC senses the current on LV side & reactive power of MV Transformer is not taken into consideration

MV/HV SENSING: SVG System senses the three phase current on MV/ HV side & hence reactive power of transformer is taken into consideration

Slow in Response:: Generally slow to respond and are an electro mechanical system and may take considerable time to achieve the desire result

Fast & Dynamic: Takes 15msec to completely respond to the need and only 50ms to dynamically respond

Unidirectional: only corrects inductive load PF

Bidirectional : correct both an inductive(lag) and capacitive(lead) load

Harmonic Resonance & Amplification : with capacitors Bank Resonance condition can occur & capacitors(without detuned reactor) amplify Harmonics

No Resonance & Amplification of harmonics: SVG can operate Efficiently up to 12% THDv.

High Maintenance: Require frequent switching of the stages to achieve correction for changing power factor and are subjected to frequent failures

Low Maintenance: Needs Little maintenance & monitoring. The service life expected to be greater than 11 years.

Monitoring on Panel : No monitoring possible due to lack of communication

App based Monitoring: Dynamic monitoring using IoT with Wi-Fi connective(optional)

No Phase Balancing Option: Not possible to balance Phases

Phase Balancing Possible : Current in three phases can be balanced