scholarly journals Study on the Raw Water Allocation and Optimization in Shenzhen City, China

Water ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1426 ◽  
Author(s):  
Zhiqiang Jiang ◽  
Chao Wang ◽  
Yi Liu ◽  
Zhongkai Feng ◽  
Changming Ji ◽  
...  
Keyword(s):  
Water Supply ◽  
Water Allocation ◽  
Large Scale ◽  
Topological Analysis ◽  
Supply System ◽  
Water Supply System ◽  
Practical Significance ◽  
Urban Water ◽  
Raw Water ◽  
Allocation Model

In order to allocate the raw water of the complex water supply system in Shenzhen reasonably, this paper studied the complex network relationship of this large-scale urban water supply system, which consists of 46 reservoirs, 67 waterworks, 2 external diversion water sources, 14 pumping stations and 9 gates, and described each component of the system with the concepts of point, line and plane. Using the topological analysis technology and graph theory, a generalized model of the network topological structure of the urban water allocation system was established. On this basis, combined with the water demand prediction and allocation model of waterworks, a water resources allocation model was established, aiming at satisfying the guaranteed rate of the water supply. The decomposition and coordination principle of the large-scale system and the dynamic simulation technology of the supply-demand balance were adopted to solve the model. The forward calculation mode of controlling waterworks and pumps, and the reverse calculation mode of controlling reservoirs and waterworks were designed in solving the model, and a double-layer feedback mechanism was formed, which took the reverse calculation mode as outer feedback and the reservoir water level constraint or pipeline capacity constraint as inner feedback. Through the verification calculation of the case study, it was found that the proposed model can deal well with the raw water allocation of a large-scale complex water supply system, which had an important application value and a practical significance.

scholarly journals Innovative approach for achieving of sustainable urban water supply system by using of solar photovoltaic energy

2017 ◽  
Vol 37 (1) ◽  
pp. 58 ◽  
Author(s):  
Jure Margeta ◽  
Bojan Đurin
Keyword(s):  
Water Supply ◽  
Urban Areas ◽  
Renewable Energy Sources ◽  
Water Reservoir ◽  
Supply System ◽  
Water Supply System ◽  
Urban Water ◽  
Solar Photovoltaic ◽  
Urban Water Supply ◽  
Pump Station

Paper describes and analyses new and innovative concept for possible integration of solar photovoltaic (PV) energy in urban water supply system (UWSS). Proposed system consists of PV generator and invertor, pump station and water reservoir. System is sized in such a manner that every his part is sized separately and after this integrated into a whole. This integration is desirable for several reasons, where the most important is the achievement of the objectives of sustainable living in urban areas i.e. achieving of sustainable urban water supply system. The biggest technological challenge associated with the use of solar, wind and other intermittent renewable energy sources RES is the realization of economically and environmentally friendly electric energy storage (EES). The paper elaborates the use of water reservoires in UWSS as EES. The proposed solution is still more expensive than the traditional and is economically acceptable today in the cases of isolated urban water system and special situations. Wider application will depend on the future trends of energy prices, construction costs of PV generators and needs for CO2 reduction by urban water infrastructure.

scholarly journals State-of-the-art review on the transient flow modeling and utilization for urban water supply system (UWSS) management

2020 ◽  
Vol 69 (8) ◽  
pp. 858-893 ◽  
Author(s):  
Huan-Feng Duan ◽  
Bin Pan ◽  
Manli Wang ◽  
Lu Chen ◽  
Feifei Zheng ◽  
...  
Keyword(s):  
Water Supply ◽  
Transient Flow ◽  
State Of The Art ◽  
Turbulence Models ◽  
Supply System ◽  
Water Supply System ◽  
Urban Water ◽  
Urban Water Supply ◽  
City Development ◽  
Rapid Urbanization

Abstract In the context of smart city development and rapid urbanization worldwide, urban water supply system (UWSS) has been of vital importance to this process. This paper presents a comprehensive review on the transient flow research for UWSS management. This review consists of two aspects as follows. The first aspect is about the development and progress of current transient theory, including transient flow models, unsteady friction and turbulence models, and numerical simulation methods. The other aspect is about the utilization and application of transient-based methods for effective UWSS diagnosis and management, including leakage, discrete and extended partial blockages, unknown branch, and other defects in water pipelines. A total of 228 publications have been reviewed and analyzed in this paper. In addition to the state-of-the-art progress and achievement of the research on transients, the advances and recommendations of future work in this field are also discussed for the development and management of next-generation smart UWSS in the paper.

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