OPERATION AND REVIEW OF HVDC SYSTEM WITH STATCOM DEVICE FOR MULTIGRID SYSTEM

Abstract

Many of these concerns are closely related to the AC voltage regulation at the converter bus. Generally, the
associated reactive compensators and HVDC systems are operated and controlled independently and the interaction
between them considered only under steady state condition. If the control become coordinates between the HVDC system
and reactive power compensator, the performance in transient state and dynamic performance of HVDC system will be
improved. The transient performance of HVDC system is very important. Since, the increasing demand of power in
industries forced integration of HVDC system with AC system. After the development of FACTS controllers, the
transmission capability becomes improved. These controllers improve the controllability and stability of power networks.
STATCOM (Static Synchronous compensator) is one of the most important Flexible AC transmission system (FACTS)
devices because of its ability to regulate voltages in transmission lines, to improve transient stability and to compensate
variable reactive power. In this paper the topology which is considered is that the characteristics of the line-commutated
HVDC with a STATCOM at the inverter end.