By default, only automatic post-contingency actions are considered when calculating voltage deviation. For P1 there is no high voltage deviation requirement. For P2-P7, there is no low or high voltage deviation requirement. Post-Contingency steady-state voltage deviation at each applicable BES bus serving load shall not exceed for P1 events. voltage shall recover to 80 of pre-contingency voltage within seconds of the initiating event for all P1P7 events 1.4 fault clearing and voltage recovery above 80%, at each applicable BES bus serving load shall not dip below 70% of pre-contingency voltage for more than 30 cycles or remain below 80% of pre-contingency voltage for more than two seconds . Rationale for Requirement WR1.5 1. is not to require that transient stability simulations be run out to 30-seconds all in order to ensure the system is stable and positively damped. Shorter runs are
By default, only automatic post-contingency actions are considered when calculating voltage deviation. For P1 there is no high voltage deviation requirement. For P2-P7, there is no low or high voltage deviation requirement. Post-Contingency steady-state voltage deviation at each applicable BES bus serving load shall not exceed for P1 events. voltage shall recover to 80 of pre-contingency voltage within seconds of the initiating event for all P1P7 events 1.4 fault clearing and voltage recovery above 80%, at each applicable BES bus serving load shall not dip below 70% of pre-contingency voltage for more than 30 cycles or remain below 80% of pre-contingency voltage for more than two seconds . Rationale for Requirement WR1.5 1. is not to require that transient stability simulations be run out to 30-seconds all in order to ensure the system is stable and positively damped. Shorter runs are
WECC-0100%20Posting%203%20redlined%20to%20Posting%204%20for%2010-27-2015.docx