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Objects and Methods : Pumped Storage Reservoir : User Methods : Cumulative Storage Value Table Automation
Cumulative Storage Value Table Automation
This category allows the RiverWare simulation to automate the creation of the Cumulative Storage Value Table. This category is only visible if Cumulative Storage Value Table is selected in the Future Value category.
* None
If this method is selected, no automation will be performed and the user must enter the data into the Cumulative Storage Value Table.
* Marginal Value to Table
If this method is selected, the Marginal Storage Value table will be used as the source for the generation of the Cumulative Storage Value Table. This is the only calculation associated with this method.
There are no slots specific to this method.
Method Details  
This method uses information from the simulation slot Marginal Storage Value Table to generate a cumulative storage value table. The cumulative storage value can be thought of as the summation of the marginal storage values from a storage of 0 to the current storage. Therefore, the automation method finds the same midpoint values used by the simulation Future Value method, and uses those points in the table.
If only one value exists in the Marginal Storage Value Table, then only two entries will exist in the Cumulative Storage Value Table. The two entries will be 0, and midway between the value in the Marginal Storage Value Table and the maximum value set on the Storage slot. If more than one value exists, three or more points will result. Following is an example Marginal Value Table (Table 22.1), the resulting Cumulative Storage Value Table (Table 22.2), and a graph of the Cumulative Storage Value data.
 
Table 22.1  Marginal Value Table
Storage
Marginal Value
20
30
60
26
100
24
 
Table 22.2  Cumulative Storage Value Table
Anticipated Storage
Cumulative Value
40
1200
80
2240
140
3680
Revised: 07/03/2024