Analysis on Guide Vane Closure Schemes of High-Head Pumped Storage Unit during Pump Outage Condition

Table 2

The setting condition parameters during pump outage condition.

Water head	Upper level (m)	Lower level (m)	Load variation	Description of water level combination and guide vane closure scheme
Head 1	735.45	163.00	100% ⟶ 0	The upper level is the level of check flood while the lower level is the level of dead water. The guide vanes are closed normally.
Head 2	735.45	181.00	100% ⟶ 0	The upper level is the check flood level, and the lower level is the normal water level. The guide vanes are closed normally.
Head 3	733.00	163.00	100% ⟶ 0	The upper level is the normal water level, and the lower level is the dead water level. The guide vanes are closed normally.
Head 4	733.00	181.00	100% ⟶ 0	The upper level is the normal water level, and the lower level is the normal water level. The guide vanes are closed normally.