Analysis of Power Quality Disturbances in Industry in the Centre Region of Portugal

Moreira, Licínio M.; Leitão, Sérgio; Vale, Zita; Galvao, J.; Marques, Pedro

doi:10.1007/978-3-642-54734-8_48

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…Source: Author's own elaboration Another objective of this new energy model was to fulfil the total energy demand of the library with incident solar radiation and feed any remaining electricity production into the grid (Galvão, Moreira, Leitão, Silva and Neto, 2013;Galvão, Moreira, Gaspar, Vindeirinho and Leitão, 2013). This power supply to the grid must be integrated into the smart grid concept for a sustainable process, taking into consideration environmental, economic, and energy aspects, maintaining high power quality levels and reducing power disturbances in any context (Moreira et al, 2014). On the other hand, some aspects of the smart city concept are stated and implemented.…”

Section: Energy Models Studiedmentioning

confidence: 99%

Energy system retrofit in a public services building

Galvao

Moreira

Gaspar

et al. 2017

MEQ

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Purpose Taking into account the current relevance of the concept of smart city connected with the Internet of Things, this work aims to study the implementation of this concept by applying a new energy model in an existing public building. The purpose of this paper is to enhance the sustainability and energy autonomy of the building. Design/methodology/approach The building referred to in the case study is a library, and simulations related to the ongoing study are based on an energy audit, comprising a survey on electrical and thermal energy consumption. The innovative proposed model consists of a mix of energy production processes based on photovoltaic panels and biomass boilers. Economic analysis of the energy model has already yielded some results regarding the payback on investment, as well as avoided emissions in the context of development of a low-carbon economy with avoided emissions and socioeconomic advantages. Findings It is possible to enhance the sustainability of the library studied by the retrofit of the current energy system. With the integration of photovoltaic panels and the conversion or replacement of boilers from natural gas to biomass, the GHG emissions could drop around 121 t CO2 per year. Another benefit would be the inclusion of endogenous resources over imported energy resources. The payback period for the measures proposed ranges from 2.5 to 8 years, proving that the increase in environmental sustainability is viable. Originality/value The intention here is to implement the concept of smart city, in more sustainable buildings, bringing them to the lowest possible energy consumption levels, hence increasing performance and comfort. Also, taking into account that the energy-consuming buildings are already constructed, it is urgent to reconvert them to lower the use of energy and emissions using technologies based on renewable energy, boosting the use of local resources.

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Section: Energy Models Studiedmentioning

confidence: 99%

Energy system retrofit in a public services building

Galvao

Moreira

Gaspar

et al. 2017

MEQ

Self Cite

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“…These case studies included, among others, plastic and mould industries, public library, sports hall, museum, comprising a vast diversity of data (numerical data; thermal images) to be processed. Here, the cloud technology can play an important role in data processing and in the dissemination of results [6], [7], [8] and [9].…”

Section: Motivation Of the Workmentioning

confidence: 99%

Use of Web Based Meters to Improve Energy Efficiency and Power Quality in Buildings

Moreira

Leitão

Vale

et al. 2015

IFIP Advances in Information and Communication Technology

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During the work conducted, several buildings were analysed, in terms of energy efficiency and power quality. Two case studies are here presented: an educational building and a museum. Most of the studies were conducted recurring to traditional measurement equipment, forcing the person to travel to the site to install equipment and every time he wanted to collect data. But one of the case studies, the museum, comprised the development of an analyser (hardware and software) able to measure electric energy, temperature and humidity. This analyser has the capability to register values on a database available in the internet and issue warnings to the building manager. This allows real-time information, supporting some energy efficiency actions. The objective is to improve this model and expand its use for several buildings, providing savings in terms of time and other resources, taking advantage of cloud-based systems.

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“…PQ disturbances in power systems can cause a range of problems, including supplementary power losses, premature aging of components, low-power factors, equipment malfunction, and even total failure [41][42][43]. To help prevent these issues, international standards have been developed by organizations such as the European Norms, American National Standard Institute, IEC, and IEEE.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy Control Systems for Power Quality Improvement—A Systematic Review Exploring Their Efficacy and Efficiency

Miron,

Cziker,

Beleiu

2024

Applied Sciences

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Fuzzy-based control systems have demonstrated a remarkable ability to control nonlinear processes, a characteristic commonly observed in power systems, particularly in the context of power quality enhancement. Despite this, an updated and comprehensive literature review on the applications of fuzzy logic in the domain of power quality control has been lacking. To address this gap, this study critically examines published research on the effective and efficient use of fuzzy logic in resolving quality issues within power systems. Data sources included the Web of Science and academic journal databases, followed by an evaluation of target articles based on predefined criteria. The information was then classified into seven categories, including control system type, features of the fuzzy logic controller, fuzzy logic inference strategy, power quality issue, control device, implementation methodology (efficacy testing), and efficiency improvement. Our study revealed that fuzzy-based control systems have evolved from simple type-1 fuzzy controllers to advanced control systems (type-2 fuzzy and hybrid) capable of effectively addressing complex power quality issues. We believe that the insights gained from this study will be useful to both experienced and inexperienced researchers and industry engineers seeking to leverage fuzzy logic to enhance power quality control.

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Analysis of Power Quality Disturbances in Industry in the Centre Region of Portugal

Cited by 5 publications

References 9 publications

Energy system retrofit in a public services building

Energy system retrofit in a public services building

Use of Web Based Meters to Improve Energy Efficiency and Power Quality in Buildings

Fuzzy Control Systems for Power Quality Improvement—A Systematic Review Exploring Their Efficacy and Efficiency

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