METHOD AND DEVICE FOR CONTROLLING A WATER SUPPLY NETWORK

In a water supply network (1) which comprises node components (2; 4, 5, 6, 7) and edge components (3; 8, 9, 10, 11), with water being fed to, removed from or stored at the node points and the water being transported between the node components via the edge components, edge components (9, 10, 11) that are controllable in respect of the flow behaviour of the water are controlled on the basis of a control plan (15). The control plan is determined on the basis of boundary conditions and is optimised on the basis of a target function, in which the number of actuations for each controllable edge component is multiplied by a cost rate for an energy consumption and/or state of wear of the edge component, and then the sum across all controllable edge components is formed. According to the invention, a safety fill level (hsec) exceeding a minimum fill level (hmin) is defined for each of the water-storing node points (7), and the target function for each water-storing node point (7) is supplemented by a further summand in the form of a further cost rate dependent on the fill level, which cost rate is minimal at a fill level corresponding to the safety fill level (hsec) and is maximal at a fill level corresponding to the minimum fill level (hmin).