Abstract
This paper proposes an analytical target cascading (ATC) based distributed optimal voltage control (DOVC)
scheme for the voltage-source-converter high-voltage-directcurrent (VSC-HVDC) connected large-scale wind farm cluster
(WFC). The aims are to minimize the voltage fluctuations
of the point of connection (POC), collector buses, and wind
turbine (WT) terminal buses inside the WFC while regulating
the bus voltages close to the rated voltage and smooth the
reactive power outputs of the WTs. With the DOVC scheme, the
large-scale strongly coupled sensitivity-based voltage optimization
problem is decomposed and solved in the WFC voltage-sourceconverter (WFCVSC) controller and sub-wind farm controllers
in parallel. The DOVC scheme considers the N − 1 principle
to improve the reliability, and distributes computation burden
to several controllers to achieve better scalability of the WFC.
The optimization subproblems are solved with local constraints
and local measurements while guaranteeing the optimality of the
primal optimization problem. A WFC with 5 wind farms and
each wind farm consisting of 20 WTs is used to validate the
proposed DOVC scheme
Original language | English |
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Journal | IEEE Transactions on Sustainable Energy |
Volume | 11 |
Issue number | 4 |
Pages (from-to) | 2152 - 2161 |
ISSN | 1949-3029 |
DOIs | |
Publication status | Published - 2020 |
Keywords
- Analytical target cascading (ATC)
- Distributed voltage control
- Wind farm cluster (WFC)