Dynamic performance of embedded HVDC with frequency control strategy

An embedded HVDC system is a HVDC link connected in parallel with an AC transmission line or a mashed AC system. This paper proposes a control strategy cooperating with conventional d-q vector control for embedded HVDC system. The novel control method employs frequency features at two terminal stati...

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Bibliographic Details
Main Authors: Jicheng Yu, Mengjia Xiao, Karady, George G.
Format: Conference Proceeding
Language:English
Subjects:
dynamic performance
Embedded HVDC
Frequency control
HVDC transmission
Oscillators
power oscillation
Power system dynamics
Power system stability
Power transmission lines
Stability analysis
transient stability
VSC-HVDC
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Summary:An embedded HVDC system is a HVDC link connected in parallel with an AC transmission line or a mashed AC system. This paper proposes a control strategy cooperating with conventional d-q vector control for embedded HVDC system. The novel control method employs frequency features at two terminal stations to eliminate power oscillation. Dynamic simulation models are constructed in PSCAD platform to compare the transient stability of the proposed strategy with the conventional d-q vector control. According to the simulation results, the average Critical Clearing Time after contingencies is improved by 22.93% when equipped with the proposed frequency control method.
ISSN:1932-5517
DOI:10.1109/PESGM.2015.7286425