Aris Dimeas | NTUA - Academia.edu (original) (raw)

Papers by Aris Dimeas

IEEE Electrification Magazine, 2020

The noninterconnected island of Kythnos (100 km2 with 1,600 inhabitants) belongs to the complex o... more The noninterconnected island of Kythnos (100 km2 with 1,600 inhabitants) belongs to the complex of the Western Cyclades islands in Greece and is located in the Aegean Sea, 104 km from Athens. The island has a rich history in the adoption of sustainable energy applications, starting from the installation of the first wind farm in Europe [5 ? 20-kW wind turbines (WTs)] by the Public Power Corporation (PPC) in 1982, followed in 1983 by the first hybrid station comprising a 100-kW photovoltaic (PV) system coupled with a 400-kWh battery storage, also by PPC. In 1989, the WTs were replaced by 5 ? 33 kW (Figure 1), and in 1992, the PV inverters were upgraded.

The transition of the traditional power network to the Smart grid requires the application of com... more The transition of the traditional power network to the Smart grid requires the application of computer intelligence and advanced communication infrastructures in order to make sure the efficient and robust coordination of the various grid components. Subsequently, the use of Intelligent Electronic Devices (IEDs) communicating with one another, facilitates the accomplishment of tasks formerly done manually. The Microgrid AGent Intelligent Control (MAGIC) system provides an exciting real-world example specifically designed for such applications. The controller is intended to be easily installed in households offering a range of possibilities for controlling the appliances but also for the communication with the various grid entities. Furthermore, is able to monitor the total electrical consumption of the house and of each appliance. In the case that Distributed Generation (DGs) units are installed in the premises of the household, the controller efficiently accommodates their optimal ...

In order to fully realize the vision of the SuSTAINABLE concept, a reference architecture for man... more In order to fully realize the vision of the SuSTAINABLE concept, a reference architecture for management and control of the distribution system as a whole is described. This novel architecture is based on the hierarchical architecture already deployed in the InovGrid test site in Évora, Portugal-InovCity. The main objective of the reference architecture proposed is to allow large scale integration of Distributed Energy Resources, namely Distributed Generation based on variable Renewable Energy Sources such as wind generators and photovoltaic panels, in a secure and efficient way. This will require the development of specific algorithms and tools to support distribution system operation that are able to exploit distributed intelligence in several network components. These advanced control functionalities are summarily described and include: Load and Renewable Energy Sources Forecasting, State Estimation and Voltage Control.

This paper describes the design of a data repository that is used to store scenarios from six suc... more This paper describes the design of a data repository that is used to store scenarios from six successful smartgrids demonstration projects that are analyzed within the EC IGREENGrid project. The data repository is flexible and scalable and can be used to automatically calculate KPIs and facilitate the comparison between technical solutions.

Currently HEDNO undergoes an upgrade of its Supervisory Control and Data Acquisition (SCADA) syst... more Currently HEDNO undergoes an upgrade of its Supervisory Control and Data Acquisition (SCADA) systems. As part of this, the Information and Communication Technology (ICT) infrastructure of the organization will undergo a respective change towards data harmonization and smooth interoperation between the heterogeneous ICT systems it consists of. This work presents the current state of the most important of HEDNO ICT systems, in an attempt to point out the diversity and complexity of the ICT infrastructure of such a large organization, and, then, it proposes the implementation of the Enterprise Service Bus (ESB) approach as a means to achieve the desired integration, interoperability and data harmonization between the various ICT systems of HEDNO.

Energies, 2020

The high energy consumption of desalination systems represents a significant opportunity for the ... more The high energy consumption of desalination systems represents a significant opportunity for the application of demand response schemes, particularly for the case of Non-Interconnected Island (NII) systems. In particular, the optimal management of the desalination demand can be proven quite beneficial in increasing the Renewable Energy Sources’ (RES) penetration, which is one of the main objectives in the day-ahead scheduling of the electricity system in Greek NIIs. This paper proposes a detailed representation of the desalination system, taking into account all the relevant constraints for the system’s operation. The mathematical representation of the aforementioned operation is incorporated in the day-ahead scheduling (DAS) for the case of Greek NII systems in order to define the optimal operational scheduling of a desalination system. The proposed optimisation procedure is applied for the desalination system installed in the Greek island of Kythnos. The results of the analysis in...

CIRED - Open Access Proceedings Journal, 2017

Currently, Hellenic Electricity Distribution Network Operator (HEDNO) undergoes an upgrade of its... more Currently, Hellenic Electricity Distribution Network Operator (HEDNO) undergoes an upgrade of its supervisory control and data acquisition systems. As part of this, the information and communication technology (ICT) infrastructure of the organisation will undergo a respective change towards data harmonisation and smooth interoperation between the heterogeneous ICT systems it consists of. This work presents the current state of the most important of HEDNO ICT systems, in an attempt to point out the diversity and complexity of the ICT infrastructure of such a large organisation, and, then, it proposes the implementation of the enterprise service bus approach as a means to achieve the desired integration, interoperability and data harmonisation between the various ICT systems of HEDNO.

CIRED - Open Access Proceedings Journal, 2017

In this paper, results from the testing procedures of the decentralized techniques developed with... more In this paper, results from the testing procedures of the decentralized techniques developed within the FP7 project DREAM are presented. The techniques are developed for the decentralized distribution system operation. More specifically, for the settlement of shortterm energy imbalances at the distribution level in an intra-day market based procedure, the mitigation of voltage deviations and congestion management in the real-time operation domain. The demonstrations were performed in the Meltemi community smart grid pilot site.

IEEE Electrification Magazine, 2017

Image lIcensed by Ingram publIshIng reece comprises more than 100 inhabited islands, 60 of which ... more Image lIcensed by Ingram publIshIng reece comprises more than 100 inhabited islands, 60 of which are not interconnected to the mainland grid, forming 32 isolated electrical systems, each with one or more islands interconnected to each other but not to the mainland. noninterconnected island power systems (niipss) are located mostly in the aegean sea (Figure 1), host 15% of the Greek population, and account for almost 10% of the total national annual electricity consumption. niipss are supplied by autonomous power stations, based on oil-fired generation units, which leads to high generation costs and imposes severe constraints on the exploitation of the significant renewable energy system (res) potential available, mainly wind and solar. in some Noninterconnected Island Systems The Greek case.

IEEE Communications Magazine, 2016

Power systems undergo massive operational and technological changes amid increasing demand for en... more Power systems undergo massive operational and technological changes amid increasing demand for environmental sustainability and energy efficiency. The traditional, supplydriven approach, relying on large-scale generation plants, which has dominated old utilities, is reconsidered to incorporate the increased penetration of variable renewable energy sources, distributed generation and storage. Demand Response is an important instrument for improving energy efficiency, since it increases consumers' engagement and provides a mechanism to reduce or shift consumption, resulting in energy savings. Regulators and policy makers in several European countries take substantial measures to encourage market uptake of Demand Response as a means to mitigate the limitations of the existing grid and boost the transition to a low carbon economy. This goes hand in hand with the deployment of services by stakeholders who aggregate consumption flexibility and offer it to grid operators or to the electricity market. Several large-scale pilot projects explore the feasibility of Demand Response in residential and small commercial customers. This paper provides an overview of the current regulatory and policy framework in Europe and summarizes the state of play of commercial and pilot Demand Response deployments in various European countries. Also, it highlights some key research objectives associated with Demand Response.

CIRED Workshop 2016, 2016

The scope of this paper is the provision of an overview of the decentralized techniques for the o... more The scope of this paper is the provision of an overview of the decentralized techniques for the operation of the distribution grid that are developed within the FP7 project DREAM. The solution provided is threefold and copes with the energy imbalances at the distribution level in an intra-day market based procedure, voltage deviation mitigation and congestion management in the real-time operation of the distribution grid. Moreover, the use cases are integrated in a general unified architecture, the DREAM platform, as components of a multi-agent system.

2016 13th International Conference on the European Energy Market (EEM), 2016

The European plan on climate change consists of a range of measures to fight against climate chan... more The European plan on climate change consists of a range of measures to fight against climate change, one of which is to reach 20% of renewable energy in the total energy consumption in the EU by 2020. The increasing penetration of RES and DG introduces new business cases which require innovative ICT tools and the support of appropriate communication infrastructure. This paper focuses on the Virtual Power Plant and Demand Response cases, proposing a general architecture as well as analyzing core functionalities, information and communication requirements, along with relative standards and technologies. The architectural analysis is based on the SGAM framework, a standardized architecture for smart grid solutions and services that allows new distribution grid players to participate in the energy markets and contribute to an optimal grid operation. The document presents the realized use cases' modeling and gives an overview of the pilots in which the proposed models will be materialized and validated.

IEEE Transactions on Power Delivery, 2017

Electronic-smart meters are increasingly installed in electricity networks of many countries. In ... more Electronic-smart meters are increasingly installed in electricity networks of many countries. In several cases, their operation in parallel with Photovoltaic (PV) inverters and other power electronic devices can result in measurement errors reaching up to 45%. In practice, this problem cannot be tackled by current standards due to the gap in standardization of electromagnetic immunity and emissions in the 2-150 kHz range. This paper provides a comprehensive review of international and national standards, guidelines, technical reports and papers on this challenging Electromagnetic Compatibility (EMC) issue highlighting the gap in the 2-150 kHz range. The ongoing standardization activity to establish both emission and immunity levels and suitable testing procedures is described in detail. Laboratory setups for testing the immunity of smart meters and the emissions of grid-tie inverters are described and experimental results to validate the suitability of the proposed approaches are presented.

2015 International Symposium on Smart Electric Distribution Systems and Technologies (EDST), 2015

ABSTRACT Road transportation is one of the main sources of environmental pollution. Electrificati... more ABSTRACT Road transportation is one of the main sources of environmental pollution. Electrification seems like the ideal solution for reducing CO2 emissions, while maintaining all the advantages of modern means of transportation. The shift to electric vehicles needs to be accompanied by an appropriate telecommunications network, which is responsible for the reliable transmission of large volumes of information associated with the consumption of electricity. This work presents the development and implementation of such a network, based on the principles of Vehicle to Grid (V2G) technology. The network characteristics in real space and time environment are studied and its performance is evaluated.

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2011

Treating homes, offices and commercial buildings as intelligently networked collaborations can co... more Treating homes, offices and commercial buildings as intelligently networked collaborations can contribute to enhancing the efficient use of energy. When smart houses are able to communicate, interact and negotiate with both customers and energy devices in the local grid, the energy consumption can be better adapted to the available energy supply, especially when the proportion of variable renewable generation is high. Several efforts focus on integrating the smart houses and the emerging smart grids. We consider that a highly heterogeneous infrastructure will be in place and no one-size-fits-all solution will prevail. Therefore, we present here our efforts focusing not only on designing a framework that will enable the gluing of various approaches via a service-enabled architecture, but also discuss on the trials of these.

MedPower 2014, 2014

This paper presents the offshore floating wind technology. The fixed-bottom offshore wind parks a... more This paper presents the offshore floating wind technology. The fixed-bottom offshore wind parks are developed for electricity production in Northern European countries where shallow waters exist. The exploitation of the vast wind resources in larger water depths is very significant for the offshore wind sector expansion, thus floating wind turbines are needed.

IEEE Electrification Magazine, 2014

ABSTRACT Private households constitute a considerable share of Europe?s electricity consumption. ... more ABSTRACT Private households constitute a considerable share of Europe?s electricity consumption. The current electricity distribution system treats them as effectively passive individual units. In the future, however, users of the electricity grid will be involved more actively in the grid operation and can become part of intelligent networked collaborations. They can then contribute the demand and supply flexibility that they dispose of and, as a result, help to better integrate renewable energy in-feed into the distribution grids.

IEEE Power and Energy Magazine, 2015

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2011

The high heterogeneity in smart house infrastructures as well as in the smart grid poses several ... more The high heterogeneity in smart house infrastructures as well as in the smart grid poses several challenges when it comes into developing approaches for energy efficiency. Consequently, several monitoring and control approaches are underway, and although they share the common goal of optimizing energy usage, they are fundamentally different at design and operational level. Therefore, we consider of high importance to investigate if they can be integrated and, more importantly, we provide common services to emerging enterprise applications that seek to hide the existing heterogeneity. We present here our motivation and efforts in bringing together the PowerMatcher, BEMI and the Magic system.

IEEE Electrification Magazine, 2020

The noninterconnected island of Kythnos (100 km2 with 1,600 inhabitants) belongs to the complex o... more The noninterconnected island of Kythnos (100 km2 with 1,600 inhabitants) belongs to the complex of the Western Cyclades islands in Greece and is located in the Aegean Sea, 104 km from Athens. The island has a rich history in the adoption of sustainable energy applications, starting from the installation of the first wind farm in Europe [5 ? 20-kW wind turbines (WTs)] by the Public Power Corporation (PPC) in 1982, followed in 1983 by the first hybrid station comprising a 100-kW photovoltaic (PV) system coupled with a 400-kWh battery storage, also by PPC. In 1989, the WTs were replaced by 5 ? 33 kW (Figure 1), and in 1992, the PV inverters were upgraded.

The transition of the traditional power network to the Smart grid requires the application of com... more The transition of the traditional power network to the Smart grid requires the application of computer intelligence and advanced communication infrastructures in order to make sure the efficient and robust coordination of the various grid components. Subsequently, the use of Intelligent Electronic Devices (IEDs) communicating with one another, facilitates the accomplishment of tasks formerly done manually. The Microgrid AGent Intelligent Control (MAGIC) system provides an exciting real-world example specifically designed for such applications. The controller is intended to be easily installed in households offering a range of possibilities for controlling the appliances but also for the communication with the various grid entities. Furthermore, is able to monitor the total electrical consumption of the house and of each appliance. In the case that Distributed Generation (DGs) units are installed in the premises of the household, the controller efficiently accommodates their optimal ...

In order to fully realize the vision of the SuSTAINABLE concept, a reference architecture for man... more In order to fully realize the vision of the SuSTAINABLE concept, a reference architecture for management and control of the distribution system as a whole is described. This novel architecture is based on the hierarchical architecture already deployed in the InovGrid test site in Évora, Portugal-InovCity. The main objective of the reference architecture proposed is to allow large scale integration of Distributed Energy Resources, namely Distributed Generation based on variable Renewable Energy Sources such as wind generators and photovoltaic panels, in a secure and efficient way. This will require the development of specific algorithms and tools to support distribution system operation that are able to exploit distributed intelligence in several network components. These advanced control functionalities are summarily described and include: Load and Renewable Energy Sources Forecasting, State Estimation and Voltage Control.

This paper describes the design of a data repository that is used to store scenarios from six suc... more This paper describes the design of a data repository that is used to store scenarios from six successful smartgrids demonstration projects that are analyzed within the EC IGREENGrid project. The data repository is flexible and scalable and can be used to automatically calculate KPIs and facilitate the comparison between technical solutions.

Currently HEDNO undergoes an upgrade of its Supervisory Control and Data Acquisition (SCADA) syst... more Currently HEDNO undergoes an upgrade of its Supervisory Control and Data Acquisition (SCADA) systems. As part of this, the Information and Communication Technology (ICT) infrastructure of the organization will undergo a respective change towards data harmonization and smooth interoperation between the heterogeneous ICT systems it consists of. This work presents the current state of the most important of HEDNO ICT systems, in an attempt to point out the diversity and complexity of the ICT infrastructure of such a large organization, and, then, it proposes the implementation of the Enterprise Service Bus (ESB) approach as a means to achieve the desired integration, interoperability and data harmonization between the various ICT systems of HEDNO.

Energies, 2020

The high energy consumption of desalination systems represents a significant opportunity for the ... more The high energy consumption of desalination systems represents a significant opportunity for the application of demand response schemes, particularly for the case of Non-Interconnected Island (NII) systems. In particular, the optimal management of the desalination demand can be proven quite beneficial in increasing the Renewable Energy Sources’ (RES) penetration, which is one of the main objectives in the day-ahead scheduling of the electricity system in Greek NIIs. This paper proposes a detailed representation of the desalination system, taking into account all the relevant constraints for the system’s operation. The mathematical representation of the aforementioned operation is incorporated in the day-ahead scheduling (DAS) for the case of Greek NII systems in order to define the optimal operational scheduling of a desalination system. The proposed optimisation procedure is applied for the desalination system installed in the Greek island of Kythnos. The results of the analysis in...

CIRED - Open Access Proceedings Journal, 2017

Currently, Hellenic Electricity Distribution Network Operator (HEDNO) undergoes an upgrade of its... more Currently, Hellenic Electricity Distribution Network Operator (HEDNO) undergoes an upgrade of its supervisory control and data acquisition systems. As part of this, the information and communication technology (ICT) infrastructure of the organisation will undergo a respective change towards data harmonisation and smooth interoperation between the heterogeneous ICT systems it consists of. This work presents the current state of the most important of HEDNO ICT systems, in an attempt to point out the diversity and complexity of the ICT infrastructure of such a large organisation, and, then, it proposes the implementation of the enterprise service bus approach as a means to achieve the desired integration, interoperability and data harmonisation between the various ICT systems of HEDNO.

CIRED - Open Access Proceedings Journal, 2017

In this paper, results from the testing procedures of the decentralized techniques developed with... more In this paper, results from the testing procedures of the decentralized techniques developed within the FP7 project DREAM are presented. The techniques are developed for the decentralized distribution system operation. More specifically, for the settlement of shortterm energy imbalances at the distribution level in an intra-day market based procedure, the mitigation of voltage deviations and congestion management in the real-time operation domain. The demonstrations were performed in the Meltemi community smart grid pilot site.

IEEE Electrification Magazine, 2017

Image lIcensed by Ingram publIshIng reece comprises more than 100 inhabited islands, 60 of which ... more Image lIcensed by Ingram publIshIng reece comprises more than 100 inhabited islands, 60 of which are not interconnected to the mainland grid, forming 32 isolated electrical systems, each with one or more islands interconnected to each other but not to the mainland. noninterconnected island power systems (niipss) are located mostly in the aegean sea (Figure 1), host 15% of the Greek population, and account for almost 10% of the total national annual electricity consumption. niipss are supplied by autonomous power stations, based on oil-fired generation units, which leads to high generation costs and imposes severe constraints on the exploitation of the significant renewable energy system (res) potential available, mainly wind and solar. in some Noninterconnected Island Systems The Greek case.

IEEE Communications Magazine, 2016

Power systems undergo massive operational and technological changes amid increasing demand for en... more Power systems undergo massive operational and technological changes amid increasing demand for environmental sustainability and energy efficiency. The traditional, supplydriven approach, relying on large-scale generation plants, which has dominated old utilities, is reconsidered to incorporate the increased penetration of variable renewable energy sources, distributed generation and storage. Demand Response is an important instrument for improving energy efficiency, since it increases consumers' engagement and provides a mechanism to reduce or shift consumption, resulting in energy savings. Regulators and policy makers in several European countries take substantial measures to encourage market uptake of Demand Response as a means to mitigate the limitations of the existing grid and boost the transition to a low carbon economy. This goes hand in hand with the deployment of services by stakeholders who aggregate consumption flexibility and offer it to grid operators or to the electricity market. Several large-scale pilot projects explore the feasibility of Demand Response in residential and small commercial customers. This paper provides an overview of the current regulatory and policy framework in Europe and summarizes the state of play of commercial and pilot Demand Response deployments in various European countries. Also, it highlights some key research objectives associated with Demand Response.

CIRED Workshop 2016, 2016

The scope of this paper is the provision of an overview of the decentralized techniques for the o... more The scope of this paper is the provision of an overview of the decentralized techniques for the operation of the distribution grid that are developed within the FP7 project DREAM. The solution provided is threefold and copes with the energy imbalances at the distribution level in an intra-day market based procedure, voltage deviation mitigation and congestion management in the real-time operation of the distribution grid. Moreover, the use cases are integrated in a general unified architecture, the DREAM platform, as components of a multi-agent system.

2016 13th International Conference on the European Energy Market (EEM), 2016

The European plan on climate change consists of a range of measures to fight against climate chan... more The European plan on climate change consists of a range of measures to fight against climate change, one of which is to reach 20% of renewable energy in the total energy consumption in the EU by 2020. The increasing penetration of RES and DG introduces new business cases which require innovative ICT tools and the support of appropriate communication infrastructure. This paper focuses on the Virtual Power Plant and Demand Response cases, proposing a general architecture as well as analyzing core functionalities, information and communication requirements, along with relative standards and technologies. The architectural analysis is based on the SGAM framework, a standardized architecture for smart grid solutions and services that allows new distribution grid players to participate in the energy markets and contribute to an optimal grid operation. The document presents the realized use cases' modeling and gives an overview of the pilots in which the proposed models will be materialized and validated.

IEEE Transactions on Power Delivery, 2017

Electronic-smart meters are increasingly installed in electricity networks of many countries. In ... more Electronic-smart meters are increasingly installed in electricity networks of many countries. In several cases, their operation in parallel with Photovoltaic (PV) inverters and other power electronic devices can result in measurement errors reaching up to 45%. In practice, this problem cannot be tackled by current standards due to the gap in standardization of electromagnetic immunity and emissions in the 2-150 kHz range. This paper provides a comprehensive review of international and national standards, guidelines, technical reports and papers on this challenging Electromagnetic Compatibility (EMC) issue highlighting the gap in the 2-150 kHz range. The ongoing standardization activity to establish both emission and immunity levels and suitable testing procedures is described in detail. Laboratory setups for testing the immunity of smart meters and the emissions of grid-tie inverters are described and experimental results to validate the suitability of the proposed approaches are presented.

2015 International Symposium on Smart Electric Distribution Systems and Technologies (EDST), 2015

ABSTRACT Road transportation is one of the main sources of environmental pollution. Electrificati... more ABSTRACT Road transportation is one of the main sources of environmental pollution. Electrification seems like the ideal solution for reducing CO2 emissions, while maintaining all the advantages of modern means of transportation. The shift to electric vehicles needs to be accompanied by an appropriate telecommunications network, which is responsible for the reliable transmission of large volumes of information associated with the consumption of electricity. This work presents the development and implementation of such a network, based on the principles of Vehicle to Grid (V2G) technology. The network characteristics in real space and time environment are studied and its performance is evaluated.

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2011

Treating homes, offices and commercial buildings as intelligently networked collaborations can co... more Treating homes, offices and commercial buildings as intelligently networked collaborations can contribute to enhancing the efficient use of energy. When smart houses are able to communicate, interact and negotiate with both customers and energy devices in the local grid, the energy consumption can be better adapted to the available energy supply, especially when the proportion of variable renewable generation is high. Several efforts focus on integrating the smart houses and the emerging smart grids. We consider that a highly heterogeneous infrastructure will be in place and no one-size-fits-all solution will prevail. Therefore, we present here our efforts focusing not only on designing a framework that will enable the gluing of various approaches via a service-enabled architecture, but also discuss on the trials of these.

MedPower 2014, 2014

This paper presents the offshore floating wind technology. The fixed-bottom offshore wind parks a... more This paper presents the offshore floating wind technology. The fixed-bottom offshore wind parks are developed for electricity production in Northern European countries where shallow waters exist. The exploitation of the vast wind resources in larger water depths is very significant for the offshore wind sector expansion, thus floating wind turbines are needed.

IEEE Electrification Magazine, 2014

ABSTRACT Private households constitute a considerable share of Europe?s electricity consumption. ... more ABSTRACT Private households constitute a considerable share of Europe?s electricity consumption. The current electricity distribution system treats them as effectively passive individual units. In the future, however, users of the electricity grid will be involved more actively in the grid operation and can become part of intelligent networked collaborations. They can then contribute the demand and supply flexibility that they dispose of and, as a result, help to better integrate renewable energy in-feed into the distribution grids.

IEEE Power and Energy Magazine, 2015

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2011

The high heterogeneity in smart house infrastructures as well as in the smart grid poses several ... more The high heterogeneity in smart house infrastructures as well as in the smart grid poses several challenges when it comes into developing approaches for energy efficiency. Consequently, several monitoring and control approaches are underway, and although they share the common goal of optimizing energy usage, they are fundamentally different at design and operational level. Therefore, we consider of high importance to investigate if they can be integrated and, more importantly, we provide common services to emerging enterprise applications that seek to hide the existing heterogeneity. We present here our motivation and efforts in bringing together the PowerMatcher, BEMI and the Magic system.