1 - Alaska Energy Data Inventory

The electric governor provided adequate stabil ity response. Plots ofwicket gate opening, turbine speed, and surge tank water surface elevationfor a 10 ft diameter tank appear as Figures 24, 25 and 26 respectively inAppendix B2.K. Transient Analysis.(1) Load Rejection - A load rejection run was made with a maximumpool elevation of 1,022, minimum hydraulic losses, blocked turbine outputof 47,000 HP (34,500 KVA generator output) and minimum tailwater elevation(4.8 ft). A 10 ft surge tank and an effective tunnel diameter of 12.4 ftwere used. Results of this run were:Maximum surge tark WSEL = 1,075 ft.Maximum piezometer elevation at unit = 1,256 ft.The turbine characteristics chart (Plate B2) shows the location of thereject run. Program IIMSURGE" in conjuction with the Allievi Charts wasused to check the "WHAMO" reject run with resu lts as fo 11 ows:Maximum surge tank WSEL = 1,076 ft.Maximum piezometer elevation at unit = 1,266 ft.The initial gate opening was 80.2 percent. Plates Bll through B14illustrate the transients occuring during rejection and figure 13 ofAppendix B2 is the WHAMO input file.(2) Load Demand - The load demand run was made with a mi n imumpool elevation of 820 ft, maximum hydraulic losses and tailwater elevationof 11.4 ft. The wi cket gates move from zero to fu 11 open in 5 seconds.which corresponds to a change in power demand from zero to 35,000 HP(25,690 MW generator output).Bl-34