WEI Peng, LIU Jiankun, ZHOU Qian, et al. Analysis on a Blocking Event and Restart of Jin-Su UHVDC Transmission Project[J]. High voltageapparatus, 2016, 52(11): 51-56.
WEI Peng, LIU Jiankun, ZHOU Qian, et al. Analysis on a Blocking Event and Restart of Jin-Su UHVDC Transmission Project[J]. High voltageapparatus, 2016, 52(11): 51-56. DOI: 10.13296/j.1001-1609.hva.2016.11.009.
To reduce impact of restoration and restart process after DC blocking on grid stability
the unipolar blocking event of Jin- Su UHVDC Transmission Project caused by fire is taken as an example. The fault development sequence is analyzed. The protection action and restart during the unipolar blocking
as well as the principle of mutation protection action and the logic of restart
are studied. Based on the simulation platform RTDS of UHVDC control and protection
the unipolar blocking event is displayed
and the simulation result is compared with the actual recorded wave. The results show that the operation of the protection device reflects this fault.