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Design a Fuzzy Controller to Minimize the Effect of HVDC Commutation Failure on Power System

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5 Author(s)
Sun, Y.-Z. ; Tsinghua Univ., Beijing ; Ling Peng ; Feng Ma ; Li, G.J.
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Commutation failure, which is a very frequent dynamic event in HVDC inverters, can deteriorate the availability of HVDC links and thus affect the performance of the power system. Most commutation failures are caused by voltage reduction due to ac system faults. In this paper, efforts are made to lower the effect of commutation failure on the power system, and the remedy is implemented in a fuzzy controller. In order to achieve control flexibility, the output of the fuzzy controller is made appropriate by setting a self-adjusting proportional factor. The validity and effectiveness of the fuzzy controller is verified by simulation which shows that the fuzzy controller can decrease commutation failure frequency induced by ac system faults.

Published in:

Power Systems, IEEE Transactions on  (Volume:23 ,  Issue: 1 )