Fault Ride-Through Method for Cascaded CSC-HVDC BasedOffshore Wind Farm

The fault ride-through (FRT) capability of a wind farm is major challenge because the disconnection of
a large wind farms caused by network disturbances may lead to system instability and cascaded
failures. Recent studies mostly focused on FRT capabilities for the voltage-source converter (VSC)
based wind farms. Although, the current-source converter (CSC) based wind energy conversion system
(WECS) is considered potential candidates for the medium-voltage high-power WECS, the FRT
methods for such system has been rarely studied in the literature. Moreover, the low dc-link inductance
of the CSC based system exhibit significant challenge for the FRT capability compared to its VSC
based counterpart, where dc-link capacitance usually 4 p.u. or higher [1]. In order to overcome the
problem, this research proposes to formulate a novel FRT method for Cascaded CSC-HVDC based
offshore wind farm.

Faculty Supervisor:

Bin Wu

Student:

Partner:

Hydro One

Discipline:

Engineering

Sector:

University:

Toronto Metropolitan University

Program:

Accelerate