scholarly journals Reliability and Energy Costs Analysis of a Rural Hybrid Microgrid Using Measured Data and Battery Dynamics: A Case Study in the Coast of Perú

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6396
Author(s):  
Franco Canziani ◽  
Raúl Vargas ◽  
Miguel Castilla ◽  
Jaume Miret
Keyword(s):  
Rural Areas ◽  
Measured Data ◽  
Energy Costs ◽  
Hybrid Microgrid ◽  
Depth Of Discharge ◽  
Promising Solution ◽  
Electric Parameters ◽  
Using Data ◽  
Electricity Access

Hybrid microgrids constitute a promising solution for filling the electricity access gap that currently exists in rural areas; however, there is still relatively little information about their reliability and costs based on measured data in real working conditions. This article analyzes data obtained from the operation of a 9 kW hybrid microgrid in the fishermen’s cove of Laguna Grande, Paracas, in the Ica region of Perú, which has been running for 5 years. This microgrid has been equipped with data acquisition systems that measure and register wind speed, solar radiation, temperatures, and all the relevant electric parameters. Battery dynamics considerations are used to determine the depth of discharge in a real-time operative situation. The collected data are used to optimize the design using the specialized software HOMER, incorporating state-of-the-art technology and costs as a possible system upgrade. This work aims to contribute to better understanding the behavior of hybrid rural microgrids using data collected under field conditions, analyzing their reliability, costs, and corresponding sensitivity to battery size as well as solar and wind installed power, as a complement to a majority of studies based on simulations.

scholarly journals A Framework for Assessing Benefits of Implemented Nature-Based Solutions

2019 ◽  
Vol 11 (23) ◽  
pp. 6788 ◽  
Author(s):  
Watkin ◽  
Ruangpan ◽  
Vojinovic ◽  
Weesakul ◽  
Torres
Keyword(s):  
Rural Areas ◽  
Performance Indicator ◽  
Well Being ◽  
Evaluation Framework ◽  
Potential Benefits ◽  
Using Data ◽  
Urban And Rural Areas ◽  
Set Up ◽  
Selection Of

Nature-based solutions (NBS) are solutions that can protect, sustainably manage, and restore natural or modified ecosystems in urban and rural areas, while providing many benefits and co-benefits including stormwater mitigation, biodiversity enhancement, and human well-being. As such, NBS have the potential to alleviate many of the environmental, social, and economic issues that we face today. Grey infrastructure, such as lined trenches and catch basins, pipes, and concrete dikes are frequently used for stormwater management and flood protection, but they do not provide many of the co-benefits that are common with NBS. Grey infrastructure is designed to quickly collect and remove rainwater, whereas NBS keep rainwater where it falls, and where it can be used by the environment. Many stakeholders lack knowledge of the capabilities and benefits of NBS, and as a result, they continue to rely on grey infrastructure in their projects. When information is made available on the benefits and how they can be quantitatively measured, it is hoped that NBS will be promoted to a mainstream infrastructure choice. A valuable way to quantify and highlight the benefits of NBS is by using an evaluation framework. There are several evaluation frameworks that qualitatively assess the potential benefits of possible NBS, however there is a need for quantitative frameworks that can assess the actual benefits (or performance) of implemented (or existing) NBS. This article presents an evaluation framework that aims to quantify the benefits and co-benefits of implemented NBS. The framework involves five main steps: (1) selection of NBS benefit categories, (2) selection of NBS indicators, (3) calculation of indicator values, (4) calculation of NBS grade, and (5) recommendations. The outcome of the framework is a single numerical grade that reflects the benefit functioning for an NBS site and values for each performance indicator. This information may be used by decision makers to determine their budget allocations to expand or construct a new NBS site, to update maintenance plans that will improve the benefits of that site, to set up programs to monitor the NBS benefits and co-benefits over time, and to schedule labour and resources for other NBS projects. The framework was tested and validated on a case study of NBS in Thailand. Through conversations with stakeholders and knowledge of the case study area, relevant categories and indicators were chosen. Using data and information obtained through various means, values for each indicator and the overall NBS grade were calculated. The values revealed which benefits were pronounced, those that were weak, and where improvements were required.

scholarly journals Hydraulic Ram Pump Integration into Water Distribution Systems for Energy Recovery Application

Water ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 21
Author(s):  
Mohamad Zeidan ◽  
Avi Ostfeld
Keyword(s):  
Rural Areas ◽  
Storage Tank ◽  
Distribution Systems ◽  
Water Distribution ◽  
Low Cost ◽  
Water Distribution Systems ◽  
Low Pressure ◽  
Excess Pressure ◽  
Energy Costs

This study presents the potential of integrating Hydrams in modern water distribution systems (WDSs) for managing excess pressure and reducing energy costs. Hydrams, which are also termed Hydraulic ram pumps in the literature, is a cyclic water pump powered by hydropower, generally used to pump drinking and irrigation water in mountainous and rural areas having short of power. The Hydrams is introduced as a sustainable low-cost alternative solution to the more conventional pressure reducing valves (PRVs) approach for managing pressure zones in WDSs. Unlike PRVs, where the pressure is lost and not put into good use, Hydrams mitigate excess pressure at high-pressure zones and direct it to much-needed low-pressure zones. In addition, Hydrams are cheap, simple, environmentally friendly, and require little maintenance. The proposed approach integrates a Hydram in parallel to the original centrifugal pump, where they can be operated interchangeably according to the system’s hydraulic needs. Nevertheless, it is vital to correctly size the Hydram at the feed line and accompany it with a proper storage tank at the low-pressure zone. The storage tank serves as a buffer between the intermittent water supply and consumer demand pattern. Moreover, the tank introduces flexibility into the system that allows more sustainable operating schedules. Two case study applications of increasing complexity are presented to demonstrate the potential of this Hybrid system, later referred to as Hybrid Pumping Unit (HPU). The Hydram and tank sizing is done by a simple heuristic approach, while the operation of the system is dictated by a genetic algorithm. The results demonstrate the potential of integrated Hydrams in reducing excess pressures and energy costs.

scholarly journals Techno-Economic Analysis of a Hybrid Mini-grid in Rural Areas: A Case Study of Bangladesh

2020 ◽  
pp. 10-29
Author(s):  
Tausif Ali ◽  
Hongzhong Ma ◽  
Ahmed Jaudat Nahian
Keyword(s):  
Economic Analysis ◽  
Rural Areas ◽  
Swot Analysis ◽  
Energy System ◽  
Battery System ◽  
Cost Of Energy ◽  
Using Data ◽  
System Sustainability ◽  
The Impact

A techno-economic analysis of a hybrid PV-Diesel mini-grid system in rural Bangladesh is presented in this study. The case-study is done using data from Patar Char village in Patuakhali district of Bangladesh, considering non-electrified households. HOMER simulation compares three system designs: Hybrid PV-Diesel-Battery, PV-Battery, and Diesel-Battery. Hybrid PV-Diesel-Battery system yielded optimum results in terms of the lower cost of energy (COE) of around USD 0.182/kWh. Overall carbon emission of this system is around 307 kg/year, which is lower than the Diesel-Battery system, but higher than PV-Battery system. A sensitivity analysis of PV-Diesel-Battery system is performed, by considering and varying some of the indicators to prove system sustainability and feasibility. The impact of price variability in diesel price, discount rate on COE, and total net present cost (TNPC) showed that PV-Diesel-Battery system is the most feasible option. Finally, a SWOT analysis is also presented to address participatory planning strategy of developing the hybrid energy system.

A case study of global ULF pulsations using data from space-borne and ground-based magnetometers and a SuperDARN radar

2011 ◽  
Vol 17 (6) ◽  
pp. 54-67
Author(s):  
A.S. Potapov ◽  
◽  
E. Amata ◽  
T.N. Polyushkina ◽  
I. Coco ◽  
...  
Keyword(s):  
Using Data

Government Policies and Rural Entrepreneurship- Case Study of an Horticulture Entrepreneur

2016 ◽  
Vol 5 (2) ◽  
Author(s):  
Vinod N. Sambrani
Keyword(s):  
Rural Development ◽  
Rural Areas ◽  
Process Development ◽  
Full Time ◽  
Rural Entrepreneurship ◽  
Development Institutions ◽  
Startup Time ◽  
Nursery Management ◽  
The Government

India is a country which is in forefront of being called a developed nation. To be a developed nation, India has to first look at its rural development, because 70 percent of the population live in rural areas, which means more than 700 million people are spread across 6,27,000 villages. Rural development is more than ever before linked to entrepreneurship. Establishments and agencies promoting rural development now look at entrepreneurship as a strategic development medium that could speed up the rural development process. Development institutions believe that rural entrepreneurship offers a huge potential for employment. In this paper a case study of a young entrepreneur who has taken up horticulture (vegetable plants nursery) as his full time profession, with a mission to help the neighbouring farmers is studied, the purpose of this paper is to understand the government role (policies and schemes), the difficulties faced by the entrepreneur during the startup time and knowledge transfer from the horticulture department, nursery management. The methodology followed is in-depth interaction with the entrepreneur. The outcome of paper will be to understand how rural entrepreneurship is helping improve the quality of life for families, communities and individuals leading to sustainable economy and environment.

The Interactional Foundations of Economic Forecasting

2018 ◽  
Author(s):  
Werner Reichmann
Keyword(s):  
Economic Forecasting ◽  
Political Actors ◽  
Social Legitimacy ◽  
Using Data ◽  
Economic Future ◽  
Economic Forecasts ◽  
Epistemic Process

How do economic forecasters produce legitimate and credible predictions of the economic future, despite most of the economy being transmutable and indeterminate? Using data from a case study of economic forecasting institutes in Germany, this chapter argues that the production of credible economic futures depends on an epistemic process embedded in various forms of interaction. This interactional foundation—through ‘foretalk’ and ‘epistemic participation’ in networks of internal and external interlocutors—sharpens economic forecasts in three ways. First, it brings to light new imaginaries of the economic future, allowing forecasters to spot emerging developments they would otherwise have missed. Second, it ensures the forecasts’ social legitimacy. And finally, it increases the forecasts’ epistemic quality by providing decentralized information about the intentions and assumptions of key economic and political actors.

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