Nikolaos Hatziargyriou (Greece)

Director, Full Professor, National Technical University of Athens (NTUA).

Nikolaos Hatziargyriou received the Diploma in Electrical and Mechanical Engineering from National Technical University of Athens in 1976 and the MSC and PhD degrees from UMIST, Manchester, UK in 1979 and 1982, respectively. Since 1984 he is with the Power Division of the Electrical and Computer Engineering Department of NTUA and since 1995 he is full professor in Power Systems. He has been one of the pioneers, if not the first one, of the concepts of Microgrids and Smartgrids in Europe. Prof. Hatziargyriou has developed simulation tools for the dynamic analysis of islanded microgrids and advanced centralized and decentralized control techniques. He has developed original decentralized control techniques based on intelligent agent technology providing DER “plug and play” capabilities with limited communication. He has been deeply involved in proving the feasibility of these concepts in laboratory environments and he has led and coordinated their installation in several real-world pilot projects in Europe. His most pioneering contribution was the operation of the first Microgrid in Europe powered 100% by Photovoltaics and batteries on the island of Kythnos that uses a decentralized multiagent based system for efficient load management. He has advanced the state of the art in the areas of DER and Renewable Energy Sources (RES) through his involvement in numerous projects performed for electric utilities and manufacturers in Europe, for both fundamental research and practical applications.

Prof. Hatziargyriou has also carried out pioneering work in the application of artificial intelligence techniques to power systems. His work includes the application of Decision Trees, Neural Networks and Fuzzy Clustering for steady state and dynamic security assessment of realistic power systems, such as the Hellenic interconnected system. He also applied novel ideas to active and reactive power control. His most significant contribution is the development of tools for power system dynamic security assessment (DSA). The on-line DSA functions developed have been applied to island systems with increased wind power penetration providing preventive operating rules for the optimal allocation of primary active power reserves. These rules ensure stable performance of island systems, in case of selected disturbances, like outages of gas or diesel units and wind park disconnections or large wind power fluctuations.

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