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198 results on '"Burt, Graeme M."'

1. Validating Intelligent Power and Energy Systems - A Discussion of Educational Needs

Author

Kotsampopoulos, Panos, Hatziargyriou, Nikos, Strasser, Thomas I., Moyo, Cyndi, Rohjans, Sebastian, Steinbrink, Cornelius, Lehnhoff, Sebastian, Palensky, Peter, van der Meer, Arjen A., Bondy, Daniel Esteban Morales, Heussen, Kai, Calin, Mihai, Khavari, Ata, Sosnina, Maria, Rodriguez, J. Emilio, and Burt, Graeme M.

Subjects
Computer Science - Computers and Society, Computer Science - Systems and Control
Abstract

Traditional power systems education and training is flanked by the demand for coping with the rising complexity of energy systems, like the integration of renewable and distributed generation, communication, control and information technology. A broad understanding of these topics by the current/future researchers and engineers is becoming more and more necessary. This paper identifies educational and training needs addressing the higher complexity of intelligent energy systems. Education needs and requirements are discussed, such as the development of systems-oriented skills and cross-disciplinary learning. Education and training possibilities and necessary tools are described focusing on classroom but also on laboratory-based learning methods. In this context, experiences of using notebooks, co-simulation approaches, hardware-in-the-loop methods and remote labs experiments are discussed., Comment: 8th International Conference on Industrial Applications of Holonic and Multi-Agent Systems (HoloMAS 2017)

Published
2017
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2. An Integrated Research Infrastructure for Validating Cyber-Physical Energy Systems

Author

Strasser, Thomas I., Moyo, Cyndi, Bründlinger, Roland, Lehnhoff, Sebastian, Blank, Marita, Palensky, Peter, van der Meer, Arjen A., Heussen, Kai, Gehrke, Oliver, Rodriguez, J. Emilio, Merino, Julia, Sandroni, Carlo, Verga, Maurizio, Calin, Mihai, Khavari, Ata, Sosnina, Maria, de Jong, Erik, Rohjans, Sebastian, Kulmala, Anna, Mäki, Kari, Brandl, Ron, Coffele, Federico, Burt, Graeme M., Kotsampopoulos, Panos, and Hatziargyriou, Nikos

Subjects
Computer Science - Systems and Control
Abstract

Renewables are key enablers in the plight to reduce greenhouse gas emissions and cope with anthropogenic global warming. The intermittent nature and limited storage capabilities of renewables culminate in new challenges that power system operators have to deal with in order to regulate power quality and ensure security of supply. At the same time, the increased availability of advanced automation and communication technologies provides new opportunities for the derivation of intelligent solutions to tackle the challenges. Previous work has shown various new methods of operating highly interconnected power grids, and their corresponding components, in a more effective way. As a consequence of these developments, the traditional power system is being transformed into a cyber-physical energy system, a smart grid. Previous and ongoing research have tended to mainly focus on how specific aspects of smart grids can be validated, but until there exists no integrated approach for the analysis and evaluation of complex cyber-physical systems configurations. This paper introduces integrated research infrastructure that provides methods and tools for validating smart grid systems in a holistic, cyber-physical manner. The corresponding concepts are currently being developed further in the European project ERIGrid., Comment: 8th International Conference on Industrial Applications of Holonic and Multi-Agent Systems (HoloMAS 2017)

Published
2017
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5. ANN Driven FOSMC Based Adaptive Droop Control for Enhanced DC Microgrid Resilience

Author

Zaman, Taimur, Feng, Zhiwang, Mitra, Sanjib, Syed, Mazheruddin, Karanki, Srinivas, Villa, Luiz, and Burt, Graeme M.

Abstract

Parallel operation of power converters in islanded DC microgrids exhibits significant trade-off in voltage regulation and current sharing with conventional droop control. The converters exhibit inaccuracies in proportionate sharing of current when subject to heavy and transient loading while sharing a common bus. Moreover, the inaccuracies further persist due to unmodeled dynamics, parametric uncertainties, disturbance in the system and communication reliability. Therefore, the resilient parallel operation of power converters in DC microgrids requires a robust and fast control strategy that can mitigate the effect of disturbances and maintain regulated bus voltage with proportional current sharing amongst the power converters. Consequently, this work proposes a novel ANN driven droop control for a DC microgrid to enhance the transient response and mitigate disturbance in finite time. Two controllers based on adaptive droop strategy are proposed; the primary controller is a generalized Hebb's learning law-based PI integrated controller that can adjust the gains in real time for finite-time disturbance compensation in the networks and the secondary control regulates the bus voltage using fractional order sliding mode control. The effectiveness of the proposed method is evaluated by simulation and experiment and compared with the conventional and distributed droop control methods, proving its robust and adaptive performance for resilient DC microgrid applications.

Published
2024
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6. Transient Spark Discharges in High-Velocity Airflow

Author

Macpherson, Ruairidh W., Timoshkin, Igor V., Wilson, Mark P., and Burt, Graeme M.

Abstract

Air-filled, self-breakdown plasma closing switches (PCSs) can operate at high pulse repetition frequency when overstressed with HVdc voltage. However, their recovery characteristics, breakdown voltage, the achievable pulse repetition rate, and variation in this rate are affected by the thermal effects local to the electrodes and by gas by-products generated by spark discharges. As a potential improvement to the performance of PCSs, flowing gas can be forced through the interelectrode gap. In this article, it was shown that purging an interelectrode gap of the plasma closing switch with air is a viable way of controlling the pulse repetition rate and variation of this rate. It was found that the difference between breakdown voltages of the first (single) breakdown events in static air and at 100-m/s airflow was less than 10%. In static air, the breakdown voltage of repetitive breakdown events decreases after the first and reaches its saturation value. It was shown that the introduction of the airflow at 100 m/s leads to recovery of the repetitive breakdown voltage, which could reach its new saturation value, up to 30% higher than the first recorded breakdown voltage. Also, purging of the spark gap with air resulted in decreasing the pulse repetition rate, and however, it leads to higher breakdown voltage, lower variation in pulse repetition rate, and increasing plasma conductivity in the spark channel, thereby increasing the efficiency of the overall high voltage system via reduced switching losses.

Published
2024
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13. Electrical protection solutions enabling integrated electrical power and composite structure systems for aircraft

Author

Preeti, Preeti, Jones, Catherine E., Norman, Patrick J., and Burt, Graeme M.

Subjects
TL
Abstract

The combined dual trends for increased use of electrical power for more-electric aircraft (MEA) and carbon fibre reinforced polymer (CFRP) for light weight aircraft structures have been pursued to improve overall aircraft efficiency, reducing fuel burn and hence emissions. However, due to the poor electrical conductivity of CFRP, the CFRP structure and electrical power system (EPS) must be kept physically separate via bulky, heavy cable harnesses and raceways. The closer integration of EPS with CFRP structure offers an opportunity to optimize the weight and volume of the combined electrical power and structural systems, reducing the need for harnesses and raceways. To enable this, there is a need to understand the implications that this will have for electrical power systems design, including approaches to protection. This paper identifies candidate protection solutions for resilient, integrated electrical–composite aircraft structures, by consideration of the interdependent trades between MEA EPS architecture design, CFRP, grounding topology, and electrical fault response. The influence of these interdependent elements on protection requirements is explored, and as a result, design rules for the protection of such resilient, integrated systems are formulated and presented, enabling a focus on the fault response of the system and development of appropriate protection solutions.

Published
2022

16. Applicability of Geographically Distributed Simulations

Author

Syed, Mazheruddin, Hoang, Tran The, Kontou, Alkistis C., Paspatis, Alexandros G., Burt, Graeme M., Tran, Quoc Tuan, Guillo-Sansano, Efren, Vogel, Steffen, Nguyen, Ha Thi, and Hatziargyriou, Nikos D.

Abstract

Geographically distributed simulations (GDS) overcome the inherent limitations in capabilities of single research infrastructure to accurately represent large-scale complex power and energy systems within representative operating environments in real-time. The feasibility of GDS has been proven, however, there is a lack of confidence in its adoption owing to limited evidence of its stability and accuracy that ascertain its practical applicability. This paper presents detailed small signal stability models for GDS setups with two interface signals transformations. The models have been validated by empirical analysis and used for determining the boundaries for stable operation of GDS setups. For the common region of stability of the two transformations considered, accuracy analysis presented offers insights for their selection. This advancement, thereby, enables realisation of experimental setups that can cater for the growing need to design and validate operational schemes that ensure robust and resilient operation of critical national infrastructure.

Published
2023
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17. Propulsion drive models for full electric marine propulsion systems

Author

Apsley, Judith M., Gonzalez-Villasenor, Aurelio, Barnes, Mike, Smith, Alexander C., Williamson, Steve, Schuddebeurs, Jeroen D., Norman, Patrick J., Booth, Campbell D., Burt, Graeme M., and McDonald, J.R.

Subjects
Electric driving -- Models, Electric propulsion -- Analysis, Business, Computers, Electronics, Electronics and electrical industries
Abstract

Integrated full electric propulsion systems are being introduced across both civil and military marine sectors. Standard power system analysis packages cover electrical and electromagnetic components but have limited models of mechanical subsystems and their controllers. Hence, electromechanical system interactions between the prime movers, power network, and driven loads are poorly understood. This paper reviews available models of the propulsion drive system components: the power converter, motor, propeller, and ship. Due to the wide range of time constants in the system, reduced-order models of the power converter are required. A new model using state-averaged models of the inverter and a hybrid model of the rectifier is developed to give an effective solution combining accuracy with speed of simulation and an appropriate interface to the electrical network model. Simulation results for a typical ship maneuver are presented. Index Terms--Electromechanical interactions, marine, propulsion, rectifier models.

Published
2009

21. Design and Implementation of a Real-Time Hardware-in-the-Loop Platform for Prototyping and Testing Digital Twins of Distributed Energy Resources.

Author

Han, Jiaxuan, Hong, Qiteng, Feng, Zhiwang, Syed, Mazheruddin H., Burt, Graeme M., and Booth, Campbell D.

Subjects
DIGITAL twins, POWER resources, HARDWARE-in-the-loop simulation, TECHNOLOGICAL innovations, COMPUTER network security, EMULATION software, EMAIL security
Abstract

Power systems worldwide are experiencing rapid evolvements with a massive increase of renewable generation in order to meet the ambitious decarbonization targets. A significant amount of renewable generation is from Distributed Energy Resources (DERs), upon which the system operators often have limited visibility. This can bring significant challenges as the increasing DERs' can lead to network constraints being violated, presenting critical risks for network security. Enhancing the visibility of DERs can be achieved via the provision of communication links, but this can be costly, particularly for real time applications. Digital Twin (DT) is an emerging technology that is considered as a promising solution for enhancing the visibility of a physical system, where only a limited set of data is required to be transmitted with the rest data of interest can be estimated via the DT. The development and demonstration of DTs requires realistic testing and validation enviorment in order to accelerate its adoption in the industry. This paper presents a real time simulation and hardware-in-the-loop (HiL) testing platform, specifically designed for prototyping, demonstrating and testing DTs of DERs. Within the proposed platform, a software-based communication emulator is developed, which allows the investigation of the impact of communication latency and jitter on the performance of DTs of the DERs. Case studies are presented to demonstrate the application of the developed DT prototyping process and testing platform to enable frequency control using the DTs, which provide valuable learnings and tools for enabling future DTs-based solutions. [ABSTRACT FROM AUTHOR]

Published
2022
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24. A power-quality management algorithm for low-voltage grids with distributed resources

Author

Wasiak, Irena, Thoma, Malte C., Foote, Colin E.T., Mienski, Rozmyslaw, Pawelek, Ryszard, Gburczyk, Piotr, and Burt, Graeme M.

Subjects
Algorithms -- Methods, Electric power distribution -- Methods, Electric power systems -- Management, Company business management, Algorithm, Business, Computers, Electronics, Electronics and electrical industries
Abstract

As a result of many factors, including the European Union's aim to increase the share of electrical energy from renewable sources, the number of distributed-generation (DG) devices in Europe is significantly increasing. Increasing numbers of DG units may cause problems with power quality (PQ). In this paper, a PQ-management algorithm is presented that reduces or even solves this problem in low-voltage grids. This algorithm will be implemented as one of several software modules in a system for distributed power operation and PQ management in low-voltage grids. PQ management in this context means maintaining PQ within prescribed limits by optimizing the control of generators, storage units, and controllable loads. Significant advantages of the presented approach are that the algorithm is universal and that it adapts its control variables automatically. Therefore, a detailed analysis of the grid in advance is not necessary. Furthermore, local PQ control of distributed resources can work autonomously and continuously without triggering by external signals, which is advantageous in the case of loss of communications. Various simulations to validate the effectiveness and stable operation of the algorithm were performed and results presented that show a marked improvement in PQ. Index Terms--Dispersed storage and generation, power distribution control, power quality (PQ).

Published
2008

25. Facilitating the Transition to an Inverter Dominated Power System: Experimental Evaluation of a Non-Intrusive Add-On Predictive Controller

Author

Electrical and Computer Engineering, Syed, Mazheruddin H., Guillo-Sansano, Efren, Mehrizi-Sani, Ali, Burt, Graeme M., Electrical and Computer Engineering, Syed, Mazheruddin H., Guillo-Sansano, Efren, Mehrizi-Sani, Ali, and Burt, Graeme M.

Abstract

The transition to an inverter-dominated power system is expected with the large-scale integration of distributed energy resources (DER). To improve the dynamic response of DERs already installed within such a system, a non-intrusive add-on controller referred to as SPAACE (set point automatic adjustment with correction enabled), has been proposed in the literature. Extensive simulation-based analysis and supporting mathematical foundations have helped establish its theoretical prevalence. This paper establishes the practical real-world relevance of SPAACE via a rigorous performance evaluation utilizing a high fidelity hardware-in-the-loop systems test bed. A comprehensive methodological approach to the evaluation with several practical measures has been undertaken and the performance of SPAACE subject to representative scenarios assessed. With the evaluation undertaken, the fundamental hypothesis of SPAACE for real-world applications has been proven, i.e., improvements in dynamic performance can be achieved without access to the internal controller. Furthermore, based on the quantitative analysis, observations, and recommendations are reported. These provide guidance for future potential users of the approach in their efforts to accelerate the transition to an inverter-dominated power system.

Published
2020

29. Translating CIM XML power system data to a proprietary format for system simulation

Author

McMorran, Alan W., Ault, Graham W., Elders, Ian M., Foote, Colin E.T., Burt, Graeme M., and McDonald, James R.

Subjects
Electric power systems -- Research, Business, Electronics, Electronics and electrical industries
Abstract

The problem of exchanging data between two or more organizations in a format that is accessible and understandable by each is a universal problem. Furthermore, the problem of translating or accessing data in the correct format for applications using proprietary data formats is challenging. Legacy software applications may endure, for some time given, regulatory expenditure pressures on electricity system operators and these require data translators (importer/exporter) and access facilities. The basis of this paper is that the Electric Power Research Institute (EPRI) common information model (CIM) in eXtensible Markup Language (XML) represents the first stage in a revolution of data exchange and manipulation for power systems. This paper explores the problem of translating data in the CIM XML format to the required format for such legacy power system analysis applications. This paper discusses solutions to some of the challenges in data translation, and illustrates how these solutions can be implemented. Index Terms--CIM XML, power system data translation.

Published
2004

35. Voltage and Current Measuring Technologies for High Voltage Direct Current Supergrids: A Technology Review Identifying the Options for Protection, Fault Location and Automation Applications

Author

Tzelepis, Dimitrios, primary, Psaras, Vasileios, additional, Tsotsopoulou, Eleni, additional, Mirsaeidi, Sohrab, additional, Dysko, Adam, additional, Hong, Qiteng, additional, Dong, Xinzhou, additional, Blair, Steven M., additional, Nikolaidis, Vassilis C., additional, Papaspiliotopoulos, Vassilis, additional, Fusiek, Grzegorz, additional, Burt, Graeme M., additional, Niewczas, Pawel, additional, and D. Booth, Campbell, additional

Published
2020
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37. Data driven approach to decentralized control : a primary frequency control study

Author

Syed, Mazheruddin H., Guillo-Sansano, Efren, Kontis, Eleftherios O., Blair, Steven M., Xu, Yan, and Burt, Graeme M.

Subjects
TK
Abstract

The emerging needs and advantages of prioritizing remedial frequency control measures closer to the source of an imbalance event, i.e., to achieve targeted local frequency response, have recently been actively discussed in literature. This paper proposes the use of data driven approach to complement and enhance the robustness of one such decentralized targeted local primary frequency control. The methodology and implementation of the proposed approach is demonstrated by means of a case study on a reduced five area dynamic model of Great Britain power system and its performance verified by means of real-time simulations.

Published
2019

43. A Novel Methodology for Macroscale, Thermal Characterization of Carbon Fiber-Reinforced Polymer for Integrated Aircraft Electrical Power Systems

Author

Jones, Catherine E., primary, Hamilton, Andrew W., additional, Norman, Patrick J., additional, Cleary, Alison, additional, Galloway, Stuart J., additional, Atkinson, Robert, additional, Burt, Graeme M., additional, Michie, Craig, additional, Andonovic, Ivan, additional, and Tachtatzis, Christos, additional

Published
2019
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49. Report on the evaluation and validation of the ELECTRA WoC control concept

Author

Strasser, Thomas, Latif, Aadil, Leimgruber, Fabian, Syed, Mazheruddin, Guillo Sansano, Efren, Burt, Graeme M., Marinelli, Mattia, Prostejovsky, Alexander Maria, Rezkalla, Michel Maher Naguib, Merino-Fernández, Julia, Rikos, Evangelos, Ciavarella, Roberto, Nuschke, Maria, Coelho, Antonio, Guagliardi, Antonio, Cabiati, Mattia, Morch, Andrei Z., Degefa, Merkebu, Hänninen, Seppo, Pasonen, Riku, Calin, Mihai, Kahraman, Ozgur, Strasser, Thomas, Latif, Aadil, Leimgruber, Fabian, Syed, Mazheruddin, Guillo Sansano, Efren, Burt, Graeme M., Marinelli, Mattia, Prostejovsky, Alexander Maria, Rezkalla, Michel Maher Naguib, Merino-Fernández, Julia, Rikos, Evangelos, Ciavarella, Roberto, Nuschke, Maria, Coelho, Antonio, Guagliardi, Antonio, Cabiati, Mattia, Morch, Andrei Z., Degefa, Merkebu, Hänninen, Seppo, Pasonen, Riku, Calin, Mihai, and Kahraman, Ozgur

Abstract

This report summarizes the evaluation and validation of the ELECTRA Web-of-Cells concept which has been implemented for the proof of concept in selected validation environments provided by the project partners. The performed experiments have been realized in simulations and in laboratory environments and showed the feasibility of the Web-of-Cells concept and integrated functions for balancing and voltage control. Future work is necessary to further refine the concept and functions and to focus the controller implementations on higher technology readiness levels.

Published
2018

50. Impact of realistic communications for fast-acting demand side management

Author

Dambrauskas, Paulius, Syed, Mazheruddin H., Blair, Steven M., Irvine, James M., Abdulhadi, Ibrahim F., Burt, Graeme M., and Bondy, Daniel Esteban Morales

Abstract

The rising penetration of intermittent energy resources is increasing the need for more diverse electrical energy resources that are able to support ancillary services. Demand side management (DSM) has a significant potential to fulfil this role, but several challenges are still impeding the wide-scale integration of DSM. One of the major challenges is ensuring the performance of the networks that enable communications between control centres and the end DSM resources. This study presents an analysis of all communications networks that typically participate in the activation of DSM, and provides an estimate for the overall latency that these networks incur. The most significant sources of delay from each of the components of the communications network are identified which allows the most critical aspects to be determined. This analysis, therefore, offers a detailed evaluation of the performance of DSM resources in the scope of providing real-time ancillary services. It is shown that, using available communications technologies, DSM can be used to provide primary frequency support services. In some cases, neighbourhood area networks may add significant delay, requiring careful choice of the technologies deployed.

Published
2017
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