期刊
WATER RESOURCES RESEARCH
卷 58, 期 2, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2021WR030266
关键词
rainwater harvesting; real-time control; optimal control; smart water network; flow regime restoration; flood mitigation
资金
- Melbourne Water, through the Melbourne Waterway Research-Practice Partnership
- European Union [786566]
- University of Melbourne
- South East Water Corporation
- Marie Curie Actions (MSCA) [786566] Funding Source: Marie Curie Actions (MSCA)
This study aimed to design an optimization-based real-time control strategy for coordinating the operation of multiple rainwater harvesting storages. The results showed that coordinated control achieved better baseflow restoration while maintaining water supply and flood protection performance.
Studies in Real-Time Control (RTC) Rainwater Harvesting Systems (RWH) have to date been limited to the control of single storages, leaving the potential benefits of operating multiple storages in a coordinated manner largely untested. In this study, we aimed to design an optimization-based RTC strategy that can operate multiple storages in a coordinated manner to achieve multiple objectives. We modeled the long-term performance of this coordinated approach (i.e., termed as coordinated control) across a range of storage sizes and compared it with a strategy that optimized the operation of each storage individually, ignoring the state of other stores within the system. Our results show that coordinated control delivered a synergy benefit in achieving better baseflow restoration, with almost no detriment to the water supply and flood protection (overflow reduction) performance. The efficiency achieved through coordinated control allows large storages to compensate for smaller, underperforming systems, to achieve higher overall performance. Such a finding suggests a general control principle in building coordination among multiple storages, which can potentially be adapted to mitigate flooding risks, and also applied to other stormwater control measures. This also opens up a new opportunity for practitioners to construct a future smart rainwater grid using a network of distributed storages, in combination with centralized large storages, to manage urban stormwater in a range of contexts and for a range of environmental objectives.
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