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Eng. Radu PLĂMĂNESCU MSc in Power Engineering from UPB (2018) is pursuing the PhD at UPB on synchronized measurements and high-reporting rate PQ equipment to develop new protection and control algorithms for microgrids. He is also an Assistant Professor at UPB and Research assistant at MicroDERLab Group at UPB. Radu also spent a leave in 2019 at Colorado State University as a Fulbright Visiting Scholar, with research focused on high-reporting rate voltage and current measurements.
The electric power systems together with the entire energy sector are rapidly evolving towards a low-carbon, secure, and competitive economy facing revolutionary transformations from technical structure to economic value chain. Pathways to achieve sustainability led to the development of new technologies, accommodation of larger shares of unpredictable and stochastic electricity transfer from sources to end-users without loss of reliability, new business models and services, data management, and so on. The new technologies and incentives for local energy communities along with large development of microgrids are main forces driving the evolution of the low voltage energy sector changing the context and paradigm of rigid contractual binding between utilities and end-user customers (now progressing to flexible prosumers with generation and storage capabilities). The flexibility and operation of a prosumer can be enhanced by a non-intrusive time-frequency analysis of distorted power quality waveforms for both generation and demand at the point of common connection. Therefore, it becomes of importance to discriminate among successive quasi-steady-state operation of a given local system using only the aggregated waveforms information available in the PCC. This paper focuses on the Hilbert–Huang method with modifications such as empirical mode decomposition improved with masking signals based on the Fast Fourier Transform, Hilbert spectral analysis, and a post-processing method for separating components and their amplitudes and frequencies within distorted power signals for a low-voltage prosumer operation. The method is used for a time-frequency-magnitude representation with promising localization capabilities enabling efficient operation for prosumers.
Radu Plamanescu; Ana-Maria Dumitrescu; Mihaela Albu; Siddharth Suryanarayanan. A Hybrid Hilbert-Huang Method for Monitoring Distorted Time-Varying Waveforms. Energies 2021, 14, 1864 .
AMA StyleRadu Plamanescu, Ana-Maria Dumitrescu, Mihaela Albu, Siddharth Suryanarayanan. A Hybrid Hilbert-Huang Method for Monitoring Distorted Time-Varying Waveforms. Energies. 2021; 14 (7):1864.
Chicago/Turabian StyleRadu Plamanescu; Ana-Maria Dumitrescu; Mihaela Albu; Siddharth Suryanarayanan. 2021. "A Hybrid Hilbert-Huang Method for Monitoring Distorted Time-Varying Waveforms." Energies 14, no. 7: 1864.
Due to the increasing complexity of the global energy system and the amount of data transmitted by smart devices, there is an urgent need to unlock smart technologies and sendees with investments on the scalability of computational resources. This objective can be achieved by means of a standardized software platform that can support interoperability and behave as the main vehicle for the rapid implementation of innovative energy sendees. One possibility to enhance computational power on demand is cloud computing, which forms the Internet of Things (IoT). In this work, a customizable open-source IoT platform setup using the FIWARE framework is deployed, which exploits the advantages for a smart energy domain. The term platform comprehends a set of software tools that allow quick integration of various devices. This study presents the implemented platform and analyses its functionality in different use cases on the European level.
Maliheh Haghgoo; Alberto Dognini; Thomas Storek; Radu Plamanescu; Ulrike Rahe; Stefan Gheorghe; Mihaela Albu; Antonello Monti; Muller Dirk. Open Smart Energy Eco-System for the Future. IOP Conference Series: Earth and Environmental Science 2020, 588, 022048 .
AMA StyleMaliheh Haghgoo, Alberto Dognini, Thomas Storek, Radu Plamanescu, Ulrike Rahe, Stefan Gheorghe, Mihaela Albu, Antonello Monti, Muller Dirk. Open Smart Energy Eco-System for the Future. IOP Conference Series: Earth and Environmental Science. 2020; 588 (2):022048.
Chicago/Turabian StyleMaliheh Haghgoo; Alberto Dognini; Thomas Storek; Radu Plamanescu; Ulrike Rahe; Stefan Gheorghe; Mihaela Albu; Antonello Monti; Muller Dirk. 2020. "Open Smart Energy Eco-System for the Future." IOP Conference Series: Earth and Environmental Science 588, no. 2: 022048.
The new technologies and regulation initiatives favoring local energy communities, together with larger - scale deployment and operation of microgrids have revealed that the rigid contractual link (intermediated by various forms of utilities) between traditional electricity generation and (mostly passive) customers is getting weaker and weaker. We face a paradigm shift where final users are becoming prosumers with generation and storage capacity and look for solutions enabling flexibility to enter a market which is also evolving. In this paper we focus on the capacity of enhancing prosumer flexibility by non-intrusive analysis of both demand - and generation patterns identified in the current signals at point of connection. A version of the Hilbert-Huang method is applied to obtain a time-frequency representation from which information enabling prosumers' efficient operation can be extracted.
Radu Plamanescu; Ana-Maria Dumitrescu; Mihaela Albu; Siddharth Suryanarayanan. Monitoring LV Prosumers Operation Using Hilbert - Huang Method. 2020 55th International Universities Power Engineering Conference (UPEC) 2020, 1 -6.
AMA StyleRadu Plamanescu, Ana-Maria Dumitrescu, Mihaela Albu, Siddharth Suryanarayanan. Monitoring LV Prosumers Operation Using Hilbert - Huang Method. 2020 55th International Universities Power Engineering Conference (UPEC). 2020; ():1-6.
Chicago/Turabian StyleRadu Plamanescu; Ana-Maria Dumitrescu; Mihaela Albu; Siddharth Suryanarayanan. 2020. "Monitoring LV Prosumers Operation Using Hilbert - Huang Method." 2020 55th International Universities Power Engineering Conference (UPEC) , no. : 1-6.
It is widely accepted that future internet is developing grace to the availability of platforms (cloud-based) enabling deployment of a large range of applications, including connecting to Internet of Things (IoT), big data analysis, handling data context, monitoring applications and services etc. Recently, European Commission and major European ICT companies launched a program in order to define a platform that would be an open option for the development of applications in the Future Internet. FIWARE technology is an open source infrastructure which allows the development of such applications and create services on the Internet. This technology provides a set of open source and API-enabled tools, and has been chosen for development in the power engineering area. In this paper, first results of FIWARE handling information delivered by Phasor Measurement Units deployed on wide area in the Romanian power system are presented, as part of the ongoing project FISMEP. From the large number of potential practical applications, in this paper results from frequency and voltage monitoring are detailed.
Radu Plamanescu; Mihaela Albu; Stefan Gheorghe; Stelian Bugnar; Mihaela Coroiu. PMU Cloud-based Applications for Power Systems Insight. 2019 54th International Universities Power Engineering Conference (UPEC) 2019, 1 -5.
AMA StyleRadu Plamanescu, Mihaela Albu, Stefan Gheorghe, Stelian Bugnar, Mihaela Coroiu. PMU Cloud-based Applications for Power Systems Insight. 2019 54th International Universities Power Engineering Conference (UPEC). 2019; ():1-5.
Chicago/Turabian StyleRadu Plamanescu; Mihaela Albu; Stefan Gheorghe; Stelian Bugnar; Mihaela Coroiu. 2019. "PMU Cloud-based Applications for Power Systems Insight." 2019 54th International Universities Power Engineering Conference (UPEC) , no. : 1-5.
Over the last decades, the study of the asymmetrical power flow in distribution systems has come to play a crucial role. That is because of the increased number of asymmetrical loads given the high penetration of distributed generation within these distribution networks. Thus, the goal of this paper is to conduct a comparison of the voltage profiles and power losses in a grid based on the IEEE 34 bus topology, over 24 h, when an SVC (Static Var Compensator) and a shunt are connected to a node where a student residence is also connected.
Valentin A. Boicea; Dorian O. Sidea; Radu Plamanescu; Ana-Maria Dumitrescu; Constantin Daniel Oancea; Viorel Petre. DFACTS Devices in Asymmetrical Power Grids: a Case Study. 2019 11th International Symposium on Advanced Topics in Electrical Engineering (ATEE) 2019, 1 -6.
AMA StyleValentin A. Boicea, Dorian O. Sidea, Radu Plamanescu, Ana-Maria Dumitrescu, Constantin Daniel Oancea, Viorel Petre. DFACTS Devices in Asymmetrical Power Grids: a Case Study. 2019 11th International Symposium on Advanced Topics in Electrical Engineering (ATEE). 2019; ():1-6.
Chicago/Turabian StyleValentin A. Boicea; Dorian O. Sidea; Radu Plamanescu; Ana-Maria Dumitrescu; Constantin Daniel Oancea; Viorel Petre. 2019. "DFACTS Devices in Asymmetrical Power Grids: a Case Study." 2019 11th International Symposium on Advanced Topics in Electrical Engineering (ATEE) , no. : 1-6.
Operation of distribution grids undergoes dramatic changes in the era of smart grid deployment, mainly due to a higher penetration of distributed generation, which is linked to an ever-increased share of power electronics mediated energy transfer. Thanks to advancements in instrumentation, including smart metering and other high reporting rate measurements, one can unlock deployment of advanced technologies and dedicated smart grid services by means of standardized software platform able to support data interoperability and information consistency. This new measurement set-up in smart grids brings a measurement synchronization potential and, therefore, opens the way for developing applications able to analyze high amount of data. Among the most suitable measurement devices used for power system monitoring and control and having high accuracy, synchronization features and high reporting rates, one can count the Phasor Measurement Units (PMU) and the microPMUs. When deployed with the highest reporting rate (50, and up to 100 frames/s), the volume of information coming from the measurements is huge and requires solutions for data management. The Big Data Analytics (BDA) concept and technique would give us the solution to this issue. In this paper, applications developed for the FIWARE platform are presented, as developed in the frame of the ERA NET project FISMEP.
Radu Plamanescu; Stefan Gheorghe; Mihai Sarb; Antonia Istenes; Mihaela Albu. A Synchronized Measurements Fiware Platform for Smart Grid Applications. 2019 11th International Symposium on Advanced Topics in Electrical Engineering (ATEE) 2019, 1 -5.
AMA StyleRadu Plamanescu, Stefan Gheorghe, Mihai Sarb, Antonia Istenes, Mihaela Albu. A Synchronized Measurements Fiware Platform for Smart Grid Applications. 2019 11th International Symposium on Advanced Topics in Electrical Engineering (ATEE). 2019; ():1-5.
Chicago/Turabian StyleRadu Plamanescu; Stefan Gheorghe; Mihai Sarb; Antonia Istenes; Mihaela Albu. 2019. "A Synchronized Measurements Fiware Platform for Smart Grid Applications." 2019 11th International Symposium on Advanced Topics in Electrical Engineering (ATEE) , no. : 1-5.
Over the last years, the PV systems have become a very attractive solution in view of achieving sustainability and efficient local generation with applicability for university campuses. However, such grids exhibit high load variation spanning from low (during vacation) to high (during winter semesters, for example). Thus, the voltage regulation in low voltage grids becomes important. The purpose of this work is to present five control strategies for voltage regulation based either on using electricity storage, transformer tap changing or on a combination of both.
Valentin A. Boicea; Radu Plamanescu; Ana-Maria Dumitrescu; Dorian O. Sidea; Mihai Sanduleac. Voltage control in low voltage campus distribution with high PV penetration. 2018 International Symposium on Fundamentals of Electrical Engineering (ISFEE) 2018, 1 -5.
AMA StyleValentin A. Boicea, Radu Plamanescu, Ana-Maria Dumitrescu, Dorian O. Sidea, Mihai Sanduleac. Voltage control in low voltage campus distribution with high PV penetration. 2018 International Symposium on Fundamentals of Electrical Engineering (ISFEE). 2018; ():1-5.
Chicago/Turabian StyleValentin A. Boicea; Radu Plamanescu; Ana-Maria Dumitrescu; Dorian O. Sidea; Mihai Sanduleac. 2018. "Voltage control in low voltage campus distribution with high PV penetration." 2018 International Symposium on Fundamentals of Electrical Engineering (ISFEE) , no. : 1-5.