scholarly journals Design of a Methodology to Evaluate the Impact of Demand-Side Management in the Planning of Isolated/Islanded Microgrids

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3459
Author(s):  
Juan Carlos Oviedo Cepeda ◽  
German Osma-Pinto ◽  
Robin Roche ◽  
Cesar Duarte ◽  
Javier Solano ◽  
...  
Keyword(s):  
Dynamic Pricing ◽  
Demand Side Management ◽  
The Other ◽  
Energy Utilization ◽  
Demand Side ◽  
Optimal Dispatch ◽  
Cost Of Energy ◽  
The Impact ◽  
Planning And Operation

The integration of Demand-Side Management (DSM) in the planning of Isolated/Islanded Microgrids (IMGs) can potentially reduce total costs and customer payments or increase renewable energy utilization. Despite these benefits, there is a paucity in literature exploring how DSM affects the planning and operation of IMGs. The present work compares the effects of five different strategies of DSM in the planning of IMGs to fulfill the gaps found in the literature. The present work embodies a Disciplined Convex Stochastic Programming formulation that integrates the planning and operation of IMGs using three optimization levels. The first level finds the capacities of the energy sources of the IMG. The second and third levels use a rolling horizon for setting the day-ahead prices or the stimulus of the DSM and the day-ahead optimal dispatch strategy of the IMG, respectively. A case study shows that the Day-Ahead Dynamic Pricing DSM and the Incentive-Based Pricing DSM reduce the total costs and the Levelized Cost of Energy of the project more than the other DSMs. In contrast, the Time of Use DSM reduces the payments of the customers and increases the delivered energy more than the other DSMs.

scholarly journals Clustering and Fuzzy Logic-Based Demand-Side Management for Solar Microgrid Operation: Case Study of Ngurudoto Microgrid, Arusha, Tanzania

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Godiana Hagile Philipo ◽  
Yusufu Abeid Chande Jande ◽  
Thomas Kivevele
Keyword(s):  
Fuzzy Logic ◽  
Management Strategy ◽  
Clustering Algorithm ◽  
Supply And Demand ◽  
Power Saving ◽  
Demand Side Management ◽  
Energy Utilization ◽  
Demand Side ◽  
Energy Management Strategy

Permanent electricity availability should not be taken for granted since grid sustainability and reliability are at stake when there is no balance between supply and demand. This paper employs a load balancing demand-side management (DSM) approach based on fuzzy logic, considering the low energy users who have insignificant influence on system peaks. Through the K-means clustering algorithm, suitable candidates for DSM are identified, and the control mechanism is based on energy utilization and load priority. The results reveal that about 3.7 kW in power saving was achieved per month. This result indicates that, with a proper energy management strategy for an individual customer, almost a flatter load profile and power saving can be achieved.

scholarly journals Impact of treated sewage on meiobenthic nematodes: a case study from the Tunisian Refining Industries Company

2022 ◽  
Vol 82 ◽  
Author(s):  
A. Hedfi ◽  
M. Ben Ali ◽  
A. Noureldeen ◽  
H. Darwish ◽  
T. Saif ◽  
...  
Keyword(s):  
Organic Matter ◽  
Environmental Parameters ◽  
The Other ◽  
Treated Sewage ◽  
Before And After ◽  
Bizerte Bay ◽  
De Man ◽  
The Impact

Abstract The main objective of the current study was to assess the impact of the water taken from the ‘Tunisian Refining Industries Company’ on meiobenthic nematodes, before and after a series of treatments in decantation basins followed by its discharge in Bizerte bay, Tunisia. The comparison of environmental parameters of the two types of water was clearly indicative of an improvement in the quality of treated waters after a significant reduction in their loads in hydrocarbons. Overall, the water retained a good quality after being treated by ‘Tunisian Refining Industries Company’ before discharge in the sea. At the end of the experiment, differential responses were observed according to the richness of sediment in organic matter and hydrocarbons. Thus, it was apparent that the nematode assemblage exposed to the treated waters was closer to controls and associated to higher values of abundance, than that under untreated ones. It was also assumed that the species Microlaimus honestus De Man, 1922, Paramonohystera proteus Wieser, 1956 and Cyartonema germanicum Juario, 1972 are sensitive bioindicators of bad environmental statues and of hydrocarbon presence in the environment. On the other hand, Metoncholaimus pristiurus (Zur Strassen, 1894) Filipjev, 1918 would rather be classified as a positive bioindicative species of this type of pollutants.

scholarly journals Case Study of The Phubbing Action of UIN Sunan Kalijaga Students in An Online Lecture

2021 ◽  
Vol 6 (1) ◽  
pp. 956-968
Author(s):  
Wahyu Hidayat ◽  
Aninditya Sri Nugraheni
Keyword(s):  
Qualitative Research ◽  
Literature Review ◽  
Social Life ◽  
Research Study ◽  
The Other ◽  
Research Subjects ◽  
Smartphone Use ◽  
Online Lecture ◽  
The Impact

The purpose of this study is to describe and reveal the impact of excessive smartphone use, which then leads to phubbing. This research study was conducted in May 2020 on 30 students of Uin Sunan Kalijaga as respondents or research subjects. This type of research is qualitative research and interviews with all research subjects, and literature review. The results of the study were recorded that 92% of 27 respondents revealed that a phubber did not give appreciation and was more likely to underestimate the other person. So, planting and practicing Pancasila values in everyday life is very important to carry out. This is so that each individual can fortify and organize himself against wise smartphone use. Then it is hoped that through this research study, students as the nation's next generation will realize the impact of excessive smartphone use on social life.

scholarly journals Artistic Skills and Scientific Abilities in Architectural Education

2020 ◽  
pp. 143-152
Author(s):  
Adil Zamil Manshad Al-Saidi
Keyword(s):  
The Other ◽  
Architectural Education ◽  
Quality Level ◽  
High Quality ◽  
Art And Science ◽  
Educational Method ◽  
Other Hand ◽  
The Impact

The integration between art and science is required for the student in the department of architecture. This paper concentrates on the importance of integration between artistic skills and scientific abilities for the student to achieve high quality level of learning in the department of architecture in Iraq. It analyses the criteria of the architectural education and the educational method used. It demonstrates the integration relationship between art, science and architecture. It follows a descriptive analyses methodology to investigate the skills and abilities required for the student to cope with the criteria of architectural education. It conducted a case study on students in the department of architecture in Iraq to explore the impact of having these skills and abilities on the student’s progression. It explains why a few students only graduate with high grades. The results obtained showed that the integration between artistic skills and scientific abilities is very important for the students. On the other hand, developing the artistic skills is harder than developing the scientific abilities in architectural education.

scholarly journals Demand-Side Management with a State Space Consideration

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2444 ◽  
Author(s):  
HyungSeon Oh
Keyword(s):  
State Space ◽  
Cost Minimization ◽  
Cost Effective ◽  
Demand Side Management ◽  
Limiting Factors ◽  
Demand Side ◽  
Power Networks ◽  
Social Welfare Maximization ◽  
Physical Reasons ◽  
The Impact

Power networks are gateways to transfer power from generators to end-users. Often, it is assumed that the transfer occurs freely without any limiting factors. However, power flows over a network can be limited by predetermined limits that may come from physical reasons, such as line capacity or Kirchhoff’s laws. When flow is constrained by these limits, this is called congestion, which reduces the energy efficiency and splits the price for electricity across the congested lines. One promising, cost-effective way to relieve the impact of the congestion is demand-side management (DSM). However, it is unclear how much DSM can impact congestion and where it can control the demand. This paper proposes a new DSM mechanism based on locational willingness-to-pay (WTP) centered around income statistics; utilizes a state-space tool to determine the possibility to alter prices by DSM; and formulates a convex optimization problem to decide the DSM. The proposed methodology is tested on IEEE (Institute of Electrical and Electronics Engineers) systems with two commonly used objectives: cost minimization and social welfare maximization.

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