Page 50 - Mathematical Models and Algorithms for Power System Optimization

40 Chapter 2

(2) Optimization calculation results of water balancing and reservoir capacity constraint of a
pumped storage plant: in a daily economic dispatch optimization calculation, the pumped
storage plant shall meet not only the generation output constraint but also the water
balancing constraint and reservoir capacity constraint in various time periods. Fig. 2.10
shows water storage optimization calculation results of the pumped storage plant. It can be
seen from Fig. 2.10 that the reservoir water variation of the pumped storage plant is also
within the range of constraint. Table 2.7 shows the reservoir water variation of the pumped
storage plant.

Water reserve (10,000m 3 )

Time period (h)

Initial water reserve Optimal water reserve
Final water reserve Maximum water reserve
Fig. 2.10
Water storage optimization calculation results of pumped storage plant.

3
Table 2.7 Reservoir water variation of pumped storage plant (10,000m )
Time period 1 2 3 4 5 6 7 8 9 10 11 12
Initial water 310 310 310 310 310 310 310 310 310 310 310 310
storage
Final water 350 350 350 350 350 350 350 350 350 350 350 350
storage
Optimized 362.8 415.6 468.4 521.2 574 626.8 679.6 679.6 663.9 648.3 632.6 685.4
water
storage
Maximum 850 850 850 850 850 850 850 850 850 850 850 850
water
storage
Continued