One of the classical HVDC applications is also ideal for HVDC Light!
As with classic HVDC, HVDC Light is ideal for
asynchronous network interconnection.The interconnection can be built using an HVDC Light cable, or if AC lines are brought to the same station, as a back-to-back station. The HVDC Light
Terranora interconnector in Australia employ DC cables, while
Eagle Pass linking Mexico with Texas is a back-to-back station.
Improved grid reliability by HVDC Light
Severe cascading blackouts in a power networks have often been initiated by some relatively minor local event or combination of relatively minor events. In the majority of cases there is a voltage collapse. Often the main reason for the spreading of the fault condition to a wide area is that AC transmissions have become overloaded and disconnected which in turn has caused other transmissions to become overloaded and so on.
A DC transmission can easily be engineered to take specific, helping actions when a disturbance occurs. The most important feature of classical HVDC and HVDC Light is that it can never become overloaded! The transmitted power in HVDC/HVDC Light is defined by its control; it is not dictated by the phase angle differences between the terminals. Voltage depressions or oscillations often occur in a disturbed network. An HVDC Light® converter the ability to generate or consume reactive power within a wide range by very rapid control action.