Centralized and Distributed Economic Model Predictive Control in Water Distribution Networks

Cost optimal control in water distribution net-works is considered. Focus is on distribution networks with tree like structures, that can be separated into sections composed of an elevated reservoirs (water towers), a pumping stations, and a consumer district. Given the structure of the network, a centralized and a distributed economic model predictive controller is developed. The later is expected to improve scalability and easy commissioning of the controller setup. Both control methods are based on first principle models. The controllers performance and effectiveness are tested on a scaled water distribution network and their performances are compared. The tests shows similar performance of the two proposed controllers, and both controllers effectively reduce the operational cost when compared to controllers that disregard energy prices.