1 % testing a pumpspeicherkraftwerk: discharge but empty
7 % define max charging power
10 % define control i1 to 5KW (we request 5 KW)
13 % define control i2 to 0KW (we are not getting energy to store)
16 % define control is to empty
20 % expecting i1 to be 5
23 % expecting i2 to be 0
26 % expecting is to be empty
27 expect_c(psh,is,empty).
29 % and therefore we shall produce 0KW