The basic principle of STATCOM - Static Var Generator (also known as SVG) is to connect a self-commutated bridge circuit directly to the grid through a reactor. By appropriately adjusting the phase and amplitude of the output voltage on the AC side of the bridge circuit or directly controlling its AC side current, the circuit can generate the required reactive current to achieve the purpose of dynamic reactive power compensation.

Three operating modes of SVG:

Design and production standards:
GB 191—2000         Graphical symbols for packaging, storage, and transportation
GB 4208—2008        Ingress Protection (IP Code)
GB/T 2900.1—2008     Electrotechnical terminology — Basic terms
GB/T 2900.33—2004    Electrotechnical terminology — Power electronics
GB/T 3859.1—1993     Basic requirements for semiconductor rectifiers
GB/T 4025—2003       Basic principles for human-machine interface marking — Coding rules for indicators and actuators
GB/T 13422—1992      Semiconductor power converters — Electrical test methods