Title of the Talk: Intelligent Measurement Systems for Smart[er] Grids Control
Abstract: Emerging power systems require significant changes on all layers - planning, operation, markets. Modern control algorithms need to process information acquired from distributed, synchronized measurement systems, and embedded in data streams with variable reporting rates and unknown filtering. Smart grids operation, including control of the energy flow in active distribution grids (and microgrids) adds more challenges to the control layer. Moreover, multiple measurement approaches are still in use: on one side, the inherited time-aggregation based measurements offered by most intelligent electronic devices, smart meters and power quality monitoring equipment; while on the other side, large data streams reported by Phasor Measurement Units and the synchronization requirements for high-resolution waveform-based monitoring devices with fault-recorder functionality.
For example, presently the state estimator constitutes the cornerstone of SCADA since it provides the power system operating situation in consecutive time intervals. The sources of errors that deteriorate the accuracy of a state estimator, beyond the inherent measurement uncertainty, are the limited knowledge of the network model and the assumption of a simplified paradigm for the energy transfer in a.c. grids. To cope with these errors is a difficult task: one has firstly to recognize the limits of the approximations in use for decades and strongly embedded in the standards and regulations, and then to adopt technology already available in our ICT-immersed societies. An example is given by frequency control function of WAMCS. Another example is the newly proposed enhanced smart metering system able to include control tasks relevant to resilient energy communities.
Bio: Mihaela M. Albu (M’98–SM’06) graduated from Politehnica University of Bucharest (UPB) in 1987 and holds the Ph.D. degree (1998) from the same university. Since 2002 she is a Professor with the Department of Measurements, Electrical Engineering Faculty, UPB. Her research interests include WAMS, smart metering technologies, power quality and dc microgrids. She is the founder of MicroDERLab group at UPB and coordinates several research teams working in projects funded by national and international grants, with results published in more than 100 papers in journals and conference proceedings. Dr. Albu is member in several standardization groups, currently contributing to IEC CENELEC TC 8X/WG 07, Requirements for power frequency measurement in electrical energy supply systems; TC77/SC77A/WG9 Power Quality measurement methods, IEC TC38 Instrument transformers and Syc LVDC, Low Voltage Direct Current and Low Voltage Direct Current for Electricity Access. Dr. Albu was spending a leave at Arizona State University as a Fulbright Fellow 2002 – 2003 and in 2010. Since 2016 she is a Distinguished Lecturer of the IEEE-Instrumentation and Measurement Society.