This document provides an overview of HVDCPlus transmission systems which use voltage source converter (VSC) technology. Some key points:
- VSC technology provides advantages over conventional HVDC using thyristor technology, allowing operation in weak grid conditions and independent control of active and reactive power.
- The main components of an HVDCPlus system are the voltage source converters (VSCs), transformers, high voltage DC circuit, and power cables. Pulse width modulation (PWM) is used to generate sinusoidal AC voltages from the VSCs.
- VSC technology allows HVDCPlus systems to feed AC systems with low short circuit power, provide static synchronous compensator (STATCOM) functionality, and independently control