Search results for: Nikos D. Hatziargyriou

Items from 1 to 20 out of 63 results

article

Schedulable capacity forecasting for electric vehicles based on big data analysis

Meiqin Mao, Shengliang Zhang, Liuchen Chang, Nikos D. Hatziargyriou

Journal of Modern Power Systems and Clean Energy > 2019 > 7 > 6 > 1651-1662

Fast and accurate forecasting of schedulable capacity of electric vehicles (EVs) plays an important role in enabling the integration of EVs into future smart grids as distributed energy storage systems. Traditional methods are insufficient to deal with large-scale actual schedulable capacity data. This paper proposes forecasting models for schedulable capacity of EVs through the parallel gradient...

article

Spatial Risk Analysis of Power Systems Resilience During Extreme Events

Dimitris N. Trakas, Mathaios Panteli, Nikos D. Hatziargyriou, Pierluigi Mancarella

Risk Analysis > 39 > 1 > 195 - 211

The increased frequency of extreme events in recent years highlights the emerging need for the development of methods that could contribute to the mitigation of the impact of such events on critical infrastructures, as well as boost their resilience against them. This article proposes an online spatial risk analysis capable of providing an indication of the evolving risk of power systems regions subject...

article

Multistage Coordinated Planning of Active Distribution Networks

Nikolaos C. Koutsoukis, Pavlos S. Georgilakis, Nikos D. Hatziargyriou

IEEE Transactions on Power Systems > 2018 > 33 > 1 > 32 - 44

This paper introduces a multistage coordinated planning method for active distribution networks (ADN). The proposed methodology optimizes, in a coordinated manner, multiple planning alternatives, i.e., reinforcement of the existing substations and distribution lines, network expansion, as well as capacitor and voltage regulator placement in conjunction with the active management of distributed generation...

article

Distributed and Decentralized Voltage Control of Smart Distribution Networks: Models, Methods, and Future Research

Kyriaki E. Antoniadou-Plytaria, Iasonas N. Kouveliotis-Lysikatos, Pavlos S. Georgilakis, Nikos D. Hatziargyriou

IEEE Transactions on Smart Grid > 2017 > 8 > 6 > 2999 - 3008

The future grid is evolving into a smart distribution network that integrates multiple distributed energy resources ensuring at the same time reliable operation and increased power quality. In recent years, many research papers have addressed the voltage violation problems that arise from the high penetration of distributed generation. In view of the transition to active network management and the...

article

Metrics and Quantification of Operational and Infrastructure Resilience in Power Systems

Mathaios Panteli, Pierluigi Mancarella, Dimitris N. Trakas, Elias Kyriakides, more

IEEE Transactions on Power Systems > 2017 > 32 > 6 > 4732 - 4742

Resilience to high impact low probability events is becoming of growing concern, for instance to address the impacts of extreme weather on critical infrastructures worldwide. However, there is, as yet, no clear methodology or set of metrics to quantify resilience in the context of power systems and in terms of both operational and infrastructure integrity. In this paper, the resilience “trapezoid”...

article

Laboratory Education of Modern Power Systems Using PHIL Simulation

Panos C. Kotsampopoulos, Vasilis A. Kleftakis, Nikos D. Hatziargyriou

IEEE Transactions on Power Systems > 2017 > 32 > 5 > 3992 - 4001

Power hardware-in-the-loop (PHIL) simulation allows the connection of a physical power component (e.g., photovoltaic inverter) to a real-time simulated network. In this paper, PHIL simulation is used for laboratory education in a systematic way for the first time. Four important topics for the understanding of power system operation are selected and laboratory exercises are designed, respectively...

article

Power Systems Resilience Assessment: Hardening and Smart Operational Enhancement Strategies

Mathaios Panteli, Dimitris N. Trakas, Pierluigi Mancarella, Nikos D. Hatziargyriou

Proceedings of the IEEE > 2017 > 105 > 7 > 1202 - 1213

Power systems have typically been designed to be reliable to expected, low-impact high-frequency outages. In contrast, extreme events, driven for instance by extreme weather and natural disasters, happen with low-probability, but can have a high impact. The need for power systems, possibly the most critical infrastructures in the world, to become resilient to such events is becoming compelling. However,...

chapter

Optimal service restoration of power distribution networks considering voltage regulation

Nikolaos C. Koutsoukis, Panagiotis A. Karafotis, Pavlos S. Georgilakis, Nikos D. Hatziargyriou

2017 IEEE Manchester PowerTech > 1 - 6

2017 IEEE Manchester PowerTech

This paper proposes a convex model for the optimal service restoration of power distribution networks after a permanent fault. The proposed method minimizes the out of service area providing the minimum switching actions and the tap position of the on load tap changer (OLTC) placed at the HV/MV substations subject to voltage and capacity limits of the distribution network. The nonlinear constraints...

article

Online Reconfiguration of Active Distribution Networks for Maximum Integration of Distributed Generation

Nikolaos C. Koutsoukis, Dimitris O. Siagkas, Pavlos S. Georgilakis, Nikos D. Hatziargyriou

IEEE Transactions on Automation Science and Engineering > 2017 > 14 > 2 > 437 - 448

This paper proposes the online reconfiguration of active distribution networks. The control of the active/reactive output power of distributed generation (DG) units combined with the control of remote controlled switches are employed in order to minimize DG curtailment, alleviate lines congestion, and mitigate voltage rise issues due to DG integration. Convex relaxations of the ac power flow equations...

article

Hardware-In-the-Loop Design and Optimal Setting of Adaptive Protection Schemes for Distribution Systems With Distributed Generation

Vasileios A. Papaspiliotopoulos, George N. Korres, Vasilis A. Kleftakis, Nikos D. Hatziargyriou

IEEE Transactions on Power Delivery > 2017 > 32 > 1 > 393 - 400

The constantly increasing presence of distributed generation (DG) in modern distribution systems induces grid configuration alterations, affecting thus the short-circuit levels and fault current paths. To address all arising protection challenges, adaptive protection is being implemented. This paper presents an innovative hardware-in-the-loop adaptive protection scheme, which incorporates real-time...

article

A Novel Method for Islanding Detection in DC Networks

Christina N. Papadimitriou, Vasilis A. Kleftakis, Nikos D. Hatziargyriou

IEEE Transactions on Sustainable Energy > 2017 > 8 > 1 > 441 - 448

Several methods have been published aiming to detect islanding in ac distribution networks. On the other hand, islanding detection in dc networks appears more challenging, as many electric parameters, such as frequency and reactive power, are absent and thus, several methods used in ac networks are nonapplicable. This paper proposes a novel islanding detection method (IDM) that is effective in dc...

article

Making Demand Response a Reality in Europe: Policy, Regulations, and Deployment Status

Ilias Lamprinos, Nikos D. Hatziargyriou, Isidoros Kokos, Aris Dimeas Dimeas

IEEE Communications Magazine > 2016 > 54 > 12 > 108 - 113

article

A Novel Short-Term Wind Speed Prediction Based on MFEC

Meiqin Mao, Jin Ling, Liuchen Chang, Nikos D. Hatziargyriou, more

IEEE Journal of Emerging and Selected Topics in Power Electronics > 2016 > 4 > 4 > 1206 - 1216

Accurate forecasting of short-term wind speed is a key technology to enable efficient and reliable operation of microgrids with wind generators. Results of wind speed prediction (WSP) methods in the current literature are subject to errors due to the random nature of wind speed and the limited generalization of forecast algorithms. In this paper, a short-term WSP method based on a model of forecast,...

article

Boosting the Power Grid Resilience to Extreme Weather Events Using Defensive Islanding

Mathaios Panteli, Dimitris N. Trakas, Pierluigi Mancarella, Nikos D. Hatziargyriou

IEEE Transactions on Smart Grid > 2016 > 7 > 6 > 2913 - 2922

Several catastrophic experiences of extreme weather events show that boosting the power grid resilience is becoming increasingly critical. This paper discusses a unified resilience evaluation and operational enhancement approach, which includes a procedure for assessing the impact of severe weather on power systems and a novel risk-based defensive islanding algorithm. This adaptive islanding algorithm...

article

Optimal operation of smart distribution networks: A review of models, methods and future research

Vasileios A. Evangelopoulos, Pavlos S. Georgilakis, Nikos D. Hatziargyriou

Electric Power Systems Research > 2016 > 140 > C > 95-106

The management of distributed energy resources (DER) in power distribution systems and the concept of demand side management (DSM) are becoming increasingly important in recent years, provided that emerging communication technologies contribute to the formation of smart distribution networks of the future. Several methods have been proposed in the literature for the optimal operation of smart distribution...

article

Stability Evaluation of Interconnected Multi-Inverter Microgrids Through Critical Clusters

Iraklis P. Nikolakakos, Hatem H. Zeineldin, Mohamed Shawky El-Moursi, Nikos D. Hatziargyriou

IEEE Transactions on Power Systems > 2016 > 31 > 4 > 3060 - 3072

This paper proposes the notion of “critical cluster” in inverter based droop controlled microgrids, thus representing the neighborhood of the distributed generation units that determines the small signal stability margin of the entire system. The clustering starts from the lowest impedance electrical connection between distributed generators, termed as “critical line”. At first, the systematic study...

article

Gossip Algorithms for Decentralized Congestion Management of Distribution Grids

Despina I. Koukoula, Nikos D. Hatziargyriou

IEEE Transactions on Sustainable Energy > 2016 > 7 > 3 > 1071 - 1080

The paper proposes a gossip algorithm-based architecture for managing power flows on radial distribution grids applying decentralized management of demand. Demand flexibility is associated with a cost-like utility function expressing the inconvenience caused by curtailment. Every node of the distribution grid participates in power flow management by sending locally measured and calculated values to...

article

Distributed Coordination of Electric Vehicles providing V2G Regulation Services

Evangelos L. Karfopoulos, Kostas A. Panourgias, Nikos D. Hatziargyriou

IEEE Transactions on Power Systems > 2016 > 31 > 4 > 2834 - 2846

The aim of this paper is to propose a distributed electric vehicle (EV) coordination mechanism, which enables the management of the charging/discharging operation of an EV fleet, offering V2G regulation services to support system operation based on a day-ahead scheduling profile generated by an EV aggregator. Initially, a decentralized iterative algorithm is introduced to manage EV charging/discharging...

chapter

Investigation of Decision Trees (DTs) Parameters for Power System Voltage Stability Enhancement

Eirini A. Leonidaki, Nikos D. Hatziargyriou

Lecture Notes in Computer Science > Advances in Artificial Intelligence > Full Papers > 181-191

This paper describes the application of Decision Tress (DTs) in order to specify the most critical location and the rate of series compensation in order to increase power system loading margin. The proposed methodology is applied to a projected model of the Hellenic interconnected system in several system configurations. Investigation of the best system operating point to create the DTs, the effect...

chapter

Improved Wind Power Forecasting Using a Combined Neuro-fuzzy and Artificial Neural Network Model

Yiannis A. Katsigiannis, Antonis G. Tsikalakis, Pavlos S. Georgilakis, Nikos D. Hatziargyriou

Lecture Notes in Computer Science > Advances in Artificial Intelligence > Full Papers > 105-115

The intermittent nature of the wind creates significant uncertainty in the operation of power systems with increased wind power penetration. Con- siderable efforts have been made for the accurate prediction of the wind power using either statistical or physical models. In this paper, a method based on Artificial Neural Network (ANN) is proposed in order to improve the predictions of an existing neuro-fuzzy...

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Keywords

DISTRIBUTED GENERATION (14)
MICROGRIDS (11)
OPTIMIZATION (11)
REACTIVE POWER (8)
VOLTAGE CONTROL (8)
GENERATORS (7)
PRODUCTION (7)
SMART GRIDS (7)
WIND POWER GENERATION (7)
MATHEMATICAL MODEL (6)
POWER SYSTEMS (5)
SMART GRID (5)
BATTERIES (4)
CONTROL SYSTEMS (4)
DISTRIBUTED GENERATION (DG) (4)
DISTRIBUTED POWER GENERATION (4)
FORECASTING (4)
INVERTERS (4)
LINEAR PROGRAMMING (4)
POWER SYSTEM STABILITY (4)
RESILIENCE (4)
SUBSTATIONS (4)
BILEVEL PROGRAMMING (3)
DENSITY ESTIMATION ROBUST ALGORITHM (3)
ELECTRIC VEHICLES (3)
ENERGY MANAGEMENT (3)
ENERGY STORAGE (3)
EXTREME WEATHER (3)
FREQUENCY CONTROL (3)
IMPEDANCE (3)
INVESTMENT (3)
LOAD FLOW (3)
LOAD MANAGEMENT (3)
METEOROLOGY (3)
MINIMIZATION (3)
PLANNING (3)
POWER DISTRIBUTION PLANNING (3)
POWER GENERATION (3)
POWER SYSTEM ECONOMICS (3)
POWER SYSTEM RELIABILITY (3)
PREDICTIVE MODELS (3)
PRICING (3)
RELAYS (3)
RENEWABLE ENERGY SOURCES (3)
RESILIENCY (3)
SECURITY (3)
STACKELBERG GAME (3)
WIND TURBINES (3)
ADAPTIVE SYSTEMS (2)
ALGORITHM DESIGN AND ANALYSIS (2)
CIRCUIT FAULTS (2)
CONDUCTORS (2)
CRITICAL INFRASTRUCTURE (2)
DECISION TREES (2)
DEMAND SIDE BIDDING (2)
DIRECTIONAL OVERCURRENT RELAYS (2)
DISTRIBUTED ALGORITHMS (2)
DISTRIBUTED ENERGY RESOURCES (2)
DISTRIBUTION NETWORKS (2)
DROOP CONTROL (2)
EDUCATION (2)
EIGENVALUES AND EIGENFUNCTIONS (2)
ELECTRIC VEHICLES (EVS) (2)
ELECTRICITY MARKETS (2)
GAMES (2)
HARDWARE (2)
HIERARCHICAL DECISION MAKING (2)
INTELLIGENT AGENTS (2)
ISLANDING (2)
LOADING (2)
MEASUREMENT (2)
MICROGRID (2)
MULTI-AGENT SYSTEMS (2)
NASH CERTAINTY EQUIVALENCE PRINCIPLE (2)
NETWORK TOPOLOGY (2)
NEURONS (2)
NONLINEAR PROGRAMMING (2)
PEER-TO-PEER COMPUTING (2)
POWER DISTRIBUTION ECONOMICS (2)
POWER ENGINEERING EDUCATION (2)
POWER GRIDS (2)
POWER LOSSES (2)
POWER SYSTEM DYNAMIC STABILITY (2)
POWER SYSTEM INTERCONNECTION (2)
POWER SYSTEM SECURITY (2)
RADIAL BASIS FUNCTION NETWORKS (2)
RADIAL BASIS FUNCTION NEURAL NETWORK (2)
REGULATORS (2)
RELIABILITY (2)
SCHEDULES (2)
SOFTWARE (2)
STABILITY ANALYSIS (2)
TESTING (2)
UNCERTAINTY (2)
VIRTUAL POWER PLANT (2)
VOLTAGE MEASUREMENT (2)
WIND FORECASTING (2)
WIND POWER (2)
WIND POWER FORECASTING (2)
WIND SPEED (2)
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Wiley (5)
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INFONA - science communication portal

Search results for: Nikos D. Hatziargyriou

Schedulable capacity forecasting for electric vehicles based on big data analysis

Spatial Risk Analysis of Power Systems Resilience During Extreme Events

Multistage Coordinated Planning of Active Distribution Networks

Distributed and Decentralized Voltage Control of Smart Distribution Networks: Models, Methods, and Future Research

Metrics and Quantification of Operational and Infrastructure Resilience in Power Systems

Laboratory Education of Modern Power Systems Using PHIL Simulation

Power Systems Resilience Assessment: Hardening and Smart Operational Enhancement Strategies

Optimal service restoration of power distribution networks considering voltage regulation

Online Reconfiguration of Active Distribution Networks for Maximum Integration of Distributed Generation

Hardware-In-the-Loop Design and Optimal Setting of Adaptive Protection Schemes for Distribution Systems With Distributed Generation

A Novel Method for Islanding Detection in DC Networks

Making Demand Response a Reality in Europe: Policy, Regulations, and Deployment Status

A Novel Short-Term Wind Speed Prediction Based on MFEC

Boosting the Power Grid Resilience to Extreme Weather Events Using Defensive Islanding

Optimal operation of smart distribution networks: A review of models, methods and future research

Stability Evaluation of Interconnected Multi-Inverter Microgrids Through Critical Clusters

Gossip Algorithms for Decentralized Congestion Management of Distribution Grids

Distributed Coordination of Electric Vehicles providing V2G Regulation Services

Investigation of Decision Trees (DTs) Parameters for Power System Voltage Stability Enhancement

Improved Wind Power Forecasting Using a Combined Neuro-fuzzy and Artificial Neural Network Model

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