Script to fix derating factor for transmission lines

Author: pesap

database/2022-10-12_Transmission_scenario_fix.sql

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+-- October 12, 2022
+-- Author: pesap
+
+-- Reason: We detected a type in the transmission derating factor for all the transmission
+-- lines for the WECC model. This is the description in the switch module of what the
+-- transmission derate factor does: trans_derating_factor[tx in TRANSMISSION_LINES] is an
+-- overall derating factor for each transmission line that can reflect forced outage
+-- rates, stability or contingency limitations. This parameter is optional and defaults to
+-- 1. This parameter should be in the range of 0 to 1, being 0 a value that disables the
+-- line completely.
+-- In our scenarios we have been using 0.59 for no apparent reason and this limited the
+-- amount of electricity that flow throught the transmission line. The new value that we
+-- will use for the scenarios is 0.95 or a 5% derate.
+
+
+UPDATE switch.transmission_lines SET derating_factor = 0.95;