Urban water supply networks are complex hydraulic systems. Pressurized water from water plants flows through main and branch pipelines to households. Outlet pressure directly affects network operation: excessive pressure accelerates pipe aging and raises burst and leakage risks; insufficient pressure causes weak and unstable water supply for end communities and high-rise buildings. Traditional empirical pressure settings struggle to adapt to fluctuating urban water demand. Balanced pipe network scheduling based on real-time data from front-end sensors has become vital for smart water supply.
I. Drawbacks of Conventional Pressure Scheduling: Empirical Control Fails Supply-Demand Matching
Residential water use peaks in morning, noon and evening and drops at night. Traditional water plants fix outlet pressure based on past experience without dynamic adjustments. During peaks, pressure loss along pipelines leads to low pressure in remote areas. In off-peak hours, reduced flow pushes up internal pipe pressure. Long-term overpressure damages pipe joints, accelerates material fatigue and increases hidden leakage and pipe burst risks.
Pipe networks vary by age, material and length across districts. One fixed outlet pressure cannot serve the whole region. Manual inspections only cover limited spots and cannot capture real-time pressure distribution, delaying scheduling decisions.
II. Real-Time Sensing to Build Hydraulic Data Infrastructure
Fine pressure scheduling relies on real operational data from multiple network points. Water authorities install pressure and flow sensors at key nodes, zone boundaries and pipe terminals, paired with remote telemetry units for on-site data collection.
Alotcer RTUs connect to pressure and flow sensors, collecting hydraulic data 24/7 at critical pipe nodes and reliably transmitting real-time readings to the water dispatching platform. The units work stably in humid underground manholes with extreme temperature swings. In temporary network outages, local storage and resume transmission prevent loss of pressure and flow data, supplying consistent raw data to the control center.
Data from multi-site RTUs generates the full-network pressure profile. Operators can view pressure fluctuations in main pipes, inter-zone pressure differences and hydraulic variations between peak and off-peak periods, instead of relying solely on readings at the plant outlet.
III. Data-Driven Balanced Scheduling for Dynamic Pressure Adjustment
With full-coverage real-time data, pressure control shifts from empirical guesswork to data-driven operation. The dispatching platform analyzes Alotcer data from each node to identify spatial and temporal pressure changes and dynamically optimize plant outlet pressure setpoints.
During morning and evening peaks, outlet pressure rises to offset pipeline pressure loss and guarantee qualified water pressure for remote zones and high-rises. At night, pressure is lowered to reduce overall network load and mitigate leakage and pipe damage from sustained overpressure.
This method balances pressure between trunk lines and end users to resolve conflicts of localized overpressure or underpressure. It also detects sudden pressure anomalies and triggers immediate alarms for pipe bursts, helping operators close valves promptly and minimize water outage impacts.
IV. Comprehensive Benefits of Balanced Scheduling: Safety and Water Conservation
Refined balanced pressure scheduling delivers multiple benefits. It reduces long-term overpressure, slows pipe aging, cuts burst repair work and extends pipeline service life. Proper pressure control also lowers network leakage, conserves water and reduces pump energy consumption, achieving both safe water supply and energy savings.
Balanced pipe network scheduling is not merely pump parameter adjustment, but a closed-loop system of sensing, transmission, analysis and regulation. As the front-end sensing device, the AltRTU600S captures subtle hydraulic changes in buried pipelines and supports dispatching decisions. With more monitoring nodes deployed, full-network hydraulic perception will keep improving, enabling smarter scheduling to reliably safeguard urban water supply.
