Public Utility Company Water-supply and Sewage Novi Sad: Modernization of the management system of wells at the springs Ratno ostrvo and Petrovaradinska ada - Indas

CHALLENGES / PROBLEMS

Impossibility to procure replacement components of existing PLC configurations, which may lead to disconnection of certain wells from the water supply system
Incompatibility of existing PLC configurations with newly installed reconstructed cabinets of electric motor drives on some wells
Slowed communication with sources as well as increasing the regular length of the source roll call cycle, which leads to data loss from other locations
Difficult operation of the water supply system in the period of increased seasonal consumption as well as at lower groundwater levels

SOLUTION

Development of a project solution for a new control system and redundant communication
Development of a new application software for managing the operation of a complete source with combined control by level, flow, and pressure
Installation of new PLC controllers for local control of well operation
Installation of new master PLC controllers to control the operation of the complete source
Installation of new radio modems, WLL Access point devices, communication controllers for the realization of redundant communication using radio and WLL network
Modifications of existing SCADA application software at local source control centres as well as at the command centre of the water production plant
Commissioning of the complete system

BENEFITS

Optimal management of water reserves and use of available capacities
Maximum utilization of source resources because all wells work equally loaded and their “aging” is uniform
Implementation of additional protection functions with protection of wells against overflow, against overpressure in the system and protection against pumps against operation outside operating curves
Development of a new supervisory control system with a visual display of the condition of equipment, wells, and springs as well as additional information: well depression, well yield, specific electricity consumption
Safe operation at low groundwater levels
Extended service life of springs, wells, pumps…
Elimination of the human factor in the management of the system
Increased reliability of water supply systems

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