Variability evaluation of distribution networks quality of supply performance indices

Water is a fundamental necessity of life. Yet water supply and distribution networks the world over are old and lacking in adequate maintenance. Consequently they often leak as much water as they deliver and provide an unacceptable quality of service to the customer. In certain parts of the world, water is available only for a few hours of the day. The solution is to build a mathematical model to simulate the operation of the real network in all of its key elements and apply it to optimise its operation. To be of value, the results of the model must be compared with field data. This process is known as calibration and is an essential element in the construction of an accurate model. This paper outlines the optimum approach to building and calibrating a mathematical model and how it can be applied to automatic calibration systems.

Download Full-text

Designing MV networks to meet quality of supply targets

16th International Conference and Exhibition on Electricity Distribution (CIRED 2001) ◽

10.1049/cp:20010899 ◽

2001 ◽

Author(s):

P.L. Clarkson

Keyword(s):

Quality Of Supply

Download Full-text

Influence of indicators of quality of electric power on reliability of work of power transformer equipment of power plants and distribution networks

Journal of Physics Conference Series ◽

10.1088/1742-6596/1683/4/042039 ◽

2020 ◽

Vol 1683 ◽

pp. 042039

Author(s):

A V Strizhichenko ◽

E G Zenina ◽

M M Sultanov ◽

O I Zhelyaskova

Keyword(s):

Electric Power ◽

Power Plants ◽

Power Transformer ◽

Distribution Networks ◽

Quality Of Electric Power ◽

Transformer Equipment

Download Full-text

Sectorization for Water Distribution Systems with Multiple Sources: A Performance Indices Comparison

Water ◽

10.3390/w13020131 ◽

2021 ◽

Vol 13 (2) ◽

pp. 131

Author(s):

Jezabel D. Bianchotti ◽

Melina Denardi ◽

Mario Castro-Gama ◽

Gabriel D. Puccini

Keyword(s):

Distribution Systems ◽

Water Distribution ◽

Distribution Networks ◽

Performance Criteria ◽

Performance Indices ◽

Multiple Sources ◽

Multiobjective Problems ◽

Open Questions ◽

Minimum Number ◽

And Performance

Sectorization is an effective technique for reducing the complexities of analyzing and managing of water systems. The resulting sectors, called district metering areas (DMAs), are expected to meet some requirements and performance criteria such as minimum number of intervention, pressure uniformity, similarity of demands, water quality and number of districts. An efficient methodology to achieve all these requirements together and the proper choice of a criteria governing the sectorization is one of the open questions about optimal DMAs design. This question is addressed in this research by highlighting the advantages of three different criteria when applied to real-word water distribution networks (WDNs). To this, here it is presented a two-stage approach for optimal design of DMAs. The first stage, the clustering of the system, is based on a Louvain-type greedy algorithm for the generalized modularity maximization. The second stage, the physical dividing of the system, is stated as a two-objective optimization problem that utilises the SMOSA version of simulated annealing for multiobjective problems. One objective is the number of isolation valves whereas for the second objective three different performance indices (PIs) are analyzed and compared: (a) standard deviation, (b) Gini coefficient and (c) loss of resilience. The methodology is applied to two real case studies where the first two PIs are optimized to address similar demands among DMAs. The results demonstrate that the proposed method is effective for sectorization into independent DMAs with similar demands. Surprisingly, it found that for the real studied systems, loss of resilience achieves better performance for each district in terms of pressure uniformity and demand similarity than the other two specific performance criteria.

Download Full-text