Preventive Unit Commitment for Transmission Line De-icing in Changing Weather Conditions

This paper is centered on augmenting the power transmission system resiliency in changing ice storm weather conditions. This is facilitated by preventing glaze formation on transmission lines by keeping the surface temperature of lines above a pre-calculated level. The Joule effect is used to control the line surface temperature through power dispatch manipulation. The power flow in the transmission lines in the affected geographical area should be maintained above an hourly minimum limit to generate sufficient heat. The varying weather conditions necessitate the change in target transmission lines' lower flow limit. The proposed approach has been implemented on the IEEE 73 bus RTS-96 system, and the results confirm the effectiveness of the proposed method.