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Publications

2022

CROSS-BORDER FLEXIBILITY PREQUALIFICATION OF DER AND EVS BASED ON DECENTRALISED COMMUNICATION MECHANISMS FOR THE DISTRIBUTION SYSTEM OPERATION

Authors
Cruz, J; Silva, C; Louro, M; Cardoso, S; Gomes, E; Lucas, A; Silva, F; Alonso, B; Pestana, R; Glória, G; Saragoça, J; Egorov, A;

Publication
IET Conference Proceedings

Abstract
The adoption of battery-powered electric vehicles in the EU is expected to grow to 30-40 million by 2030. This, together with the large adoption of other Distributed Energy Resources (DERs), represents a great challenge for Distribution System Operators (DSOs) in multiple perspectives, such as providing the needed charging infrastructure and ensuring that everyone is served with the expected Quality of Service (QoS), by having a secure and reliable system operation capable of mitigating grid congestion and voltage violation events. One of the mechanisms to mitigate these events can be the usage of these DER, such as Electric Vehicles (EVs), as flexibility sources for the improvement of the planning and operation of power distribution systems. This paper proposes harmonising the coordination of the prequalification process for flexibility provision (product and grid prequalification) among System and Market Operators from Portugal, Spain and France, enabling the participation of flexibility providers in multiple markets from cross-border countries through a harmonised and non-redundant prequalification process. © 2022 CIRED workshop on E-mobility and power distribution systems. All rights reserved.

2022

An exploratory study on the barriers to innovative behavior: the spiteful effect of envy

Authors
Walter, CE; Au-Yong-Oliveira, M;

Publication
JOURNAL OF ORGANIZATIONAL CHANGE MANAGEMENT

Abstract
Purpose The present investigation aimed to evaluate the influence of envy on the predisposition to innovative behavior, starting from a conceptual model that considers not only the direct influence of envy but its indirect influence through ostracism and alignment with the negative behaviors of superiors. Design/methodology/approach Using a survey applied to 168 individuals, a conceptual model was developed based on the relationship ignored in the literature between envy and innovative behavior. The model was validated using the multivariate statistical technique of structural equation modeling with partial least squares estimation (Partial least squares structural equation modeling [PLS-SEM]). Findings The results of the study suggest that envy not only has a direct positive influence on alignment with negative boss behaviors and ostracism, but also an indirect influence on ostracism mediated by alignment with negative boss behaviors. Another important result of the present investigation refers to the negative effect of envy on the predisposition to innovative behavior. The results suggest that the greater the envy, the lower the innovative behavior. Practical implications This research provides evidence that envy can act as a barrier to innovation by triggering counterproductive behaviors such as ostracism and a decrease in predisposition to innovative behaviors, either due to innovative individuals prematurely exiting the organization or due to them lessening/dampening their innovativeness to avoid the negative consequences. Given this scenario, it becomes necessary to increase managerial awareness on the subject to manage negative emotions to promote the conditions for organizational innovation. Originality/value The present research contributes in both practical and theoretical ways to understanding the effects of envy on the predisposition to innovative behavior. Adding to this, this research represents a conceptual advance by linking envy to innovative behavior, providing a promising avenue for extending the psychological relevance of the envy construct to organizational and management studies, which are generally positive, normative and outcome-oriented.

2022

Optimal sizing of renewable energy systems in a Microgrid considering electricity market interaction and reliability analysis

Authors
Hakimi, SM; Hasankhani, A; Shafie khah, M; Lotfi, M; Catalao, JPS;

Publication
ELECTRIC POWER SYSTEMS RESEARCH

Abstract
This paper addresses the optimal sizing of renewable energy systems (RESs) in a microgrid (MG), where the MG participates in the electricity market. A novel method for reliability analysis is proposed in this study to deal with the high penetration of RESs. In this framework, the MG is considered as a price maker, having a two-direction relation with the electricity market. RESs, including photovoltaic (PV) panels, wind turbines (WTs), and fuel cells, are optimally sized based on the reliability index, and the results are evaluated before and after the MG involvement in the electricity market. The results show a 3.6% decrease in the total cost of the microgrid as a result of the transactions with the electricity market. Furthermore, the efficiency of the proposed approximate reliability method is verified, where the reliability of the MG is evaluated with less computational complexity and acceptable accuracy.

2022

Dynamic Analysis of the Sustainable Performance of Electric Mobility in European Countries

Authors
Vaz, CB; Ferreira, ÂP;

Publication
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Abstract
As part of the ongoing climate and energy framework, the European Commission raised recently the 2030 greenhouse gas emission reduction target, moving towards a climate-neutral economy. Transportation represents almost a quarter of Europe’s greenhouse gas emissions, and it is the remaining sector with increasing emissions, above 1990 levels. Considering also the evolving necessity for the reduction of fossil fuels dependency, Europe’s strategy has been designed to support an irreversible shift toward low-emission electric mobility. In this context, the present work assesses the performance of electric mobility in European countries, by using a dynamic analysis in the period 2015–2019, framed in four sustainable dimensions, economy, technology, environment and society. The methodology aggregates several sub-indicators in a composite indicator by using the Data Envelopment Analysis, and evaluates the dynamic change in the sustainable performance through the biennial Malmquist index. Main results indicate that the total productivity change has been improved mainly due to the progression of the frontier that has been observed for all countries from 2018. However, an increasing number of countries have had more difficulties to adopt the best sustainable electric mobility practices, being necessary to design strategies to promote them, mainly in underperforming countries. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

2022

Data Science for Industry 4.0: A Literature Review on Open Design Approach

Authors
Castro, H; Costa, F; Ferreira, L; Avila, P; Putnik, GD; Cruz Cunha, M;

Publication
Procedia Computer Science

Abstract
Data Science is a tool for organizations to accelerate the development of innovative solutions through collaboration among Small and Medium Enterprises (SMEs), leading to the Industry 4.0 approach. Data is essential in decision-making. Many organizations can't access timely relevant information because they don't own it or there is a lack of collaboration among third parties. Often, data-sharing and collaborative approaches can benefit both, increase the market they operate in, and accelerate innovation. This paper identifies and analyzes the current utility of Data Science for Industry 4.0 from an Open Design perspective to accelerate innovation across different industries. © 2022 The Author(s).

2022

Internships with Portuguese Speakers: Leadership, Organisational Culture and the Current Brain Drain

Authors
Macedo, M; Au-Yong-Oliveira, M; Walter, CE; Moreira, A;

Publication
SUSTAINABILITY

Abstract
Doing internships is increasingly common in Portugal, often being regarded as a prerequisite for entering the labour market. This trend reinforces the need to understand the interns' perception of the ideal characteristics for this type of experience, in order to stop (or at least slow down) the brain drain that is currently felt. This exploratory research aims at reflecting on how organisations can contribute to successful internships. Themes such as the leadership and organisational culture of the host entity are addressed, areas which have been debated less often in the current literature. Our quantitative research was based on a survey, which obtained 143 responses from individuals with internship experience. Data were analysed using descriptive, reliability, inferential, and multiple linear regression analysis. The results from this study showcased a tendency toward servant leadership (in detriment to paternalistic or autocratic leadership) as being the most appropriate leadership style for an internship. It was also possible to emphasise some important points in an internship experience, including remuneration (desired by the interns) and the tasks performed (the interns want to be given responsibilities and meaningful work during their internship). Some of the results obtained are according to the state-of-the-art, however, others diverge.

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